renderer_vulkan: Add experimental Vulkan renderer

.gitmodules

@@ -61,3 +61,9 @@
 [submodule "vulkan-headers"]
 	path = externals/vulkan-headers
 	url = https://github.com/KhronosGroup/Vulkan-Headers
+[submodule "glslang"]
+	path = externals/glslang
+	url = https://github.com/KhronosGroup/glslang
+[submodule "glm"]
+	path = externals/glm
+	url = https://github.com/g-truc/glm

CMakeLists.txt

@@ -9,6 +9,7 @@ cmake_policy(SET CMP0069 NEW)
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/CMakeModules")
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/externals/cmake-modules")
 include(DownloadExternals)
+include(GNUInstallDirs)
 include(CMakeDependentOption)
 
 project(citra LANGUAGES C CXX ASM)

externals/CMakeLists.txt

@@ -60,6 +60,16 @@ endif()
 # Glad
 add_subdirectory(glad)
 
+# glslang
+set(SKIP_GLSLANG_INSTALL ON)
+set(ENABLE_GLSLANG_BINARIES OFF)
+set(ENABLE_SPVREMAPPER OFF)
+set(ENABLE_CTEST OFF)
+add_subdirectory(glslang)
+
+# glm
+add_subdirectory(glm)
+
 # inih
 add_subdirectory(inih)
 

src/CMakeLists.txt

@@ -122,6 +122,7 @@ else()
 
     if (MINGW)
         add_definitions(-DMINGW_HAS_SECURE_API)
+        add_compile_options("-Wa,-mbig-obj")
         if (COMPILE_WITH_DWARF)
             add_compile_options("-gdwarf")
         endif()

src/citra_qt/CMakeLists.txt

@@ -269,6 +269,10 @@ target_link_libraries(citra-qt PRIVATE audio_core common core input_common netwo
 target_link_libraries(citra-qt PRIVATE Boost::boost glad nihstro-headers Qt5::Widgets Qt5::Multimedia)
 target_link_libraries(citra-qt PRIVATE ${PLATFORM_LIBRARIES} Threads::Threads)
 
+if (NOT WIN32)
+    target_include_directories(citra-qt PRIVATE ${Qt5Gui_PRIVATE_INCLUDE_DIRS})
+endif()
+
 target_compile_definitions(citra-qt PRIVATE
     # Use QStringBuilder for string concatenation to reduce
     # the overall number of temporary strings created.

src/citra_qt/bootmanager.cpp

@@ -25,6 +25,10 @@
 #include "video_core/renderer_base.h"
 #include "video_core/video_core.h"
 
+#if !defined(WIN32)
+#include <qpa/qplatformnativeinterface.h>
+#endif
+
 EmuThread::EmuThread(Frontend::GraphicsContext& core_context) : core_context(core_context) {}
 
 EmuThread::~EmuThread() = default;
@@ -53,6 +57,7 @@ void EmuThread::run() {
         });
 
     emit LoadProgress(VideoCore::LoadCallbackStage::Complete, 0, 0);
+    emit HideLoadingScreen();
 
     core_context.MakeCurrent();
 
@@ -303,6 +308,40 @@ public:
     }
 };
 
+static Frontend::WindowSystemType GetWindowSystemType() {
+    // Determine WSI type based on Qt platform.
+    QString platform_name = QGuiApplication::platformName();
+    if (platform_name == QStringLiteral("windows"))
+        return Frontend::WindowSystemType::Windows;
+    else if (platform_name == QStringLiteral("xcb"))
+        return Frontend::WindowSystemType::X11;
+    else if (platform_name == QStringLiteral("wayland"))
+        return Frontend::WindowSystemType::Wayland;
+
+    LOG_CRITICAL(Frontend, "Unknown Qt platform!");
+    return Frontend::WindowSystemType::Windows;
+}
+
+static Frontend::EmuWindow::WindowSystemInfo GetWindowSystemInfo(QWindow* window) {
+    Frontend::EmuWindow::WindowSystemInfo wsi;
+    wsi.type = GetWindowSystemType();
+
+    // Our Win32 Qt external doesn't have the private API.
+#if defined(WIN32) || defined(__APPLE__)
+    wsi.render_surface = window ? reinterpret_cast<void*>(window->winId()) : nullptr;
+#else
+    QPlatformNativeInterface* pni = QGuiApplication::platformNativeInterface();
+    wsi.display_connection = pni->nativeResourceForWindow("display", window);
+    if (wsi.type == Frontend::WindowSystemType::Wayland)
+        wsi.render_surface = window ? pni->nativeResourceForWindow("surface", window) : nullptr;
+    else
+        wsi.render_surface = window ? reinterpret_cast<void*>(window->winId()) : nullptr;
+#endif
+    wsi.render_surface_scale = window ? static_cast<float>(window->devicePixelRatio()) : 1.0f;
+
+    return wsi;
+}
+
 GRenderWindow::GRenderWindow(QWidget* parent_, EmuThread* emu_thread, bool is_secondary_)
     : QWidget(parent_), EmuWindow(is_secondary_), emu_thread(emu_thread) {
 
@@ -539,6 +578,9 @@ bool GRenderWindow::InitRenderTarget() {
         break;
     }
 
+    // Update the Window System information with the new render target
+    window_info = GetWindowSystemInfo(child_widget->windowHandle());
+
     child_widget->resize(Core::kScreenTopWidth, Core::kScreenTopHeight + Core::kScreenBottomHeight);
 
     layout()->addWidget(child_widget);

src/citra_qt/configuration/configure_graphics.cpp

@@ -76,6 +76,7 @@ void ConfigureGraphics::SetConfiguration() {
     ui->toggle_accurate_mul->setChecked(Settings::values.shaders_accurate_mul.GetValue());
     ui->toggle_disk_shader_cache->setChecked(Settings::values.use_disk_shader_cache.GetValue());
     ui->toggle_vsync_new->setChecked(Settings::values.use_vsync_new.GetValue());
+    ui->graphics_api_combo->setCurrentIndex(static_cast<int>(Settings::values.graphics_api.GetValue()));
 
     if (Settings::IsConfiguringGlobal()) {
         ui->toggle_shader_jit->setChecked(Settings::values.use_shader_jit.GetValue());
@@ -95,6 +96,7 @@ void ConfigureGraphics::ApplyConfiguration() {
                                              ui->toggle_disk_shader_cache, use_disk_shader_cache);
     ConfigurationShared::ApplyPerGameSetting(&Settings::values.use_vsync_new, ui->toggle_vsync_new,
                                              use_vsync_new);
+    ConfigurationShared::ApplyPerGameSetting(&Settings::values.graphics_api, ui->graphics_api_combo);
 
     if (Settings::IsConfiguringGlobal()) {
         Settings::values.use_shader_jit = ui->toggle_shader_jit->isChecked();

src/common/hash.h

@@ -6,6 +6,7 @@
 
 #include <cstddef>
 #include <cstring>
+#include <concepts>
 #include "common/cityhash.h"
 #include "common/common_types.h"
 
@@ -41,6 +42,13 @@ inline u64 HashCombine(std::size_t& seed, const u64 hash) {
     return seed ^= hash + 0x9e3779b9 + (seed << 6) + (seed >> 2);
 }
 
+template <std::integral T>
+struct IdentityHash {
+    T operator()(const T& value) const {
+        return value;
+    }
+};
+
 /// A helper template that ensures the padding in a struct is initialized by memsetting to 0.
 template <typename T>
 struct HashableStruct {

src/common/logging/backend.cpp

@@ -236,6 +236,7 @@ void DebuggerBackend::Write(const Entry& entry) {
     CLS(Render)                                                                                    \
     SUB(Render, Software)                                                                          \
     SUB(Render, OpenGL)                                                                            \
+    SUB(Render, Vulkan)                                                                            \
     CLS(Audio)                                                                                     \
     SUB(Audio, DSP)                                                                                \
     SUB(Audio, Sink)                                                                               \

src/common/logging/formatter.h

@@ -4,8 +4,8 @@
 
 #pragma once
 
-#include <type_traits>
 #include <fmt/format.h>
+#include <type_traits>
 
 // adapted from https://github.com/fmtlib/fmt/issues/2704
 // a generic formatter for enum classes

src/common/logging/log.h

@@ -8,6 +8,7 @@
 #include <array>
 #include "common/common_types.h"
 #include "common/logging/formatter.h"
+
 namespace Log {
 
 // trims up to and including the last of ../, ..\, src/, src\ in a string
@@ -103,6 +104,7 @@ enum class Class : ClassType {
     Render,            ///< Emulator video output and hardware acceleration
     Render_Software,   ///< Software renderer backend
     Render_OpenGL,     ///< OpenGL backend
+    Render_Vulkan,     ///< Vulkan backend
     Audio,             ///< Audio emulation
     Audio_DSP,         ///< The HLE and LLE implementations of the DSP
     Audio_Sink,        ///< Emulator audio output backend

src/common/math_util.h

@@ -5,6 +5,7 @@
 #pragma once
 
 #include <cstdlib>
+#include <compare>
 #include <type_traits>
 
 namespace Common {

src/common/settings.h

@@ -446,7 +446,7 @@ struct Values {
     Setting<bool> allow_plugin_loader{true, "allow_plugin_loader"};
 
     // Renderer
-    SwitchableSetting<GraphicsAPI> graphics_api{GraphicsAPI::OpenGL, "graphics_api"};
+    SwitchableSetting<GraphicsAPI> graphics_api{GraphicsAPI::Vulkan, "graphics_api"};
     SwitchableSetting<bool> use_hw_renderer{true, "use_hw_renderer"};
     SwitchableSetting<bool> use_hw_shader{true, "use_hw_shader"};
     SwitchableSetting<bool> separable_shader{false, "use_separable_shader"};

src/core/frontend/emu_window.h

@@ -14,6 +14,15 @@
 
 namespace Frontend {
 
+/// Information for the Graphics Backends signifying what type of screen pointer is in
+/// WindowInformation
+enum class WindowSystemType : u8 {
+    Headless,
+    Windows,
+    X11,
+    Wayland,
+};
+
 struct Frame;
 /**
  * For smooth Vsync rendering, we want to always present the latest frame that the core generates,
@@ -122,6 +131,23 @@ public:
             Core::kScreenTopWidth, Core::kScreenTopHeight + Core::kScreenBottomHeight};
     };
 
+    /// Data describing host window system information
+    struct WindowSystemInfo {
+        // Window system type. Determines which GL context or Vulkan WSI is used.
+        WindowSystemType type = WindowSystemType::Headless;
+
+        // Connection to a display server. This is used on X11 and Wayland platforms.
+        void* display_connection = nullptr;
+
+        // Render surface. This is a pointer to the native window handle, which depends
+        // on the platform. e.g. HWND for Windows, Window for X11. If the surface is
+        // set to nullptr, the video backend will run in headless mode.
+        void* render_surface = nullptr;
+
+        // Scale of the render surface. For hidpi systems, this will be >1.
+        float render_surface_scale = 1.0f;
+    };
+
     /// Polls window events
     virtual void PollEvents() = 0;
 
@@ -185,6 +211,13 @@ public:
         config = val;
     }
 
+    /**
+     * Returns system information about the drawing area.
+     */
+    const WindowSystemInfo& GetWindowInfo() const {
+        return window_info;
+    }
+
     /**
      * Gets the framebuffer layout (width, height, and screen regions)
      * @note This method is thread-safe
@@ -233,6 +266,7 @@ protected:
     }
 
     bool is_secondary{};
+    WindowSystemInfo window_info;
 
 private:
     /**

src/core/memory.cpp

@@ -595,33 +595,6 @@ bool MemorySystem::IsValidPhysicalAddress(const PAddr paddr) const {
     return GetPhysicalRef(paddr);
 }
 
-PAddr MemorySystem::ClampPhysicalAddress(PAddr base, PAddr address) const {
-    struct MemoryArea {
-        PAddr paddr_base;
-        u32 size;
-    };
-
-    constexpr std::array memory_areas = {
-        MemoryArea{VRAM_PADDR, VRAM_SIZE},
-        MemoryArea{DSP_RAM_PADDR, DSP_RAM_SIZE},
-        MemoryArea{FCRAM_PADDR, FCRAM_N3DS_SIZE},
-        MemoryArea{N3DS_EXTRA_RAM_PADDR, N3DS_EXTRA_RAM_SIZE},
-    };
-
-    const auto area =
-        std::ranges::find_if(memory_areas, [&](const MemoryArea& area) {
-            return base >= area.paddr_base && base <= area.paddr_base + area.size;
-        });
-
-    if (area == memory_areas.end()) {
-        LOG_ERROR(HW_Memory, "Unknown base address used for clamping {:#08X} at PC {:#08X}", base,
-                  Core::GetRunningCore().GetPC());
-        return address;
-    }
-
-    return std::clamp(address, area->paddr_base, area->paddr_base + area->size);
-}
-
 u8* MemorySystem::GetPointer(const VAddr vaddr) {
     u8* page_pointer = impl->current_page_table->pointers[vaddr >> CITRA_PAGE_BITS];
     if (page_pointer) {

src/core/memory.h

@@ -587,9 +587,6 @@ public:
     /// Returns true if the address refers to a valid memory region
     bool IsValidPhysicalAddress(PAddr paddr) const;
 
-    /// Clamps the address to the boundaries of the memory region pointed by base
-    PAddr ClampPhysicalAddress(PAddr base, PAddr address) const;
-
     /// Gets offset in FCRAM from a pointer inside FCRAM range
     u32 GetFCRAMOffset(const u8* pointer) const;
 

src/video_core/CMakeLists.txt

@@ -85,11 +85,41 @@ add_library(video_core STATIC
     #temporary, move these back in alphabetical order before merging
     renderer_opengl/gl_format_reinterpreter.cpp
     renderer_opengl/gl_format_reinterpreter.h
+    renderer_vulkan/pica_to_vk.h
+    renderer_vulkan/renderer_vulkan.cpp
+    renderer_vulkan/renderer_vulkan.h
+    renderer_vulkan/vk_common.cpp
+    renderer_vulkan/vk_common.h
+    renderer_vulkan/vk_rasterizer.cpp
+    renderer_vulkan/vk_rasterizer.h
+    renderer_vulkan/vk_instance.cpp
+    renderer_vulkan/vk_instance.h
+    renderer_vulkan/vk_pipeline_cache.cpp
+    renderer_vulkan/vk_pipeline_cache.h
+    renderer_vulkan/vk_platform.cpp
+    renderer_vulkan/vk_platform.h
+    renderer_vulkan/vk_renderpass_cache.cpp
+    renderer_vulkan/vk_renderpass_cache.h
+    renderer_vulkan/vk_shader_gen.cpp
+    renderer_vulkan/vk_shader_gen.h
+    renderer_vulkan/vk_shader.cpp
+    renderer_vulkan/vk_shader.h
+    renderer_vulkan/vk_stream_buffer.cpp
+    renderer_vulkan/vk_stream_buffer.h
+    renderer_vulkan/vk_swapchain.cpp
+    renderer_vulkan/vk_swapchain.h
+    renderer_vulkan/vk_task_scheduler.cpp
+    renderer_vulkan/vk_task_scheduler.h
+    renderer_vulkan/vk_texture_runtime.cpp
+    renderer_vulkan/vk_texture_runtime.h
     shader/debug_data.h
     shader/shader.cpp
     shader/shader.h
+    shader/shader_cache.h
     shader/shader_interpreter.cpp
     shader/shader_interpreter.h
+    shader/shader_uniforms.cpp
+    shader/shader_uniforms.h
     swrasterizer/clipper.cpp
     swrasterizer/clipper.h
     swrasterizer/framebuffer.cpp
@@ -160,8 +190,11 @@ endif()
 
 create_target_directory_groups(video_core)
 
+# Include Vulkan headers
+target_include_directories(video_core PRIVATE ../../externals/vulkan-headers/include)
+target_include_directories(video_core PRIVATE ../../externals/vma)
 target_link_libraries(video_core PUBLIC common core)
-target_link_libraries(video_core PRIVATE glad nihstro-headers Boost::serialization)
+target_link_libraries(video_core PRIVATE glad glm::glm SPIRV glslang nihstro-headers Boost::serialization)
 set_target_properties(video_core PROPERTIES INTERPROCEDURAL_OPTIMIZATION ${ENABLE_LTO})
 
 if (ARCHITECTURE_x86_64)

src/video_core/pica.cpp

@@ -40,7 +40,7 @@ void Zero(T& o) {
 State::State() : geometry_pipeline(*this) {
     auto SubmitVertex = [this](const Shader::AttributeBuffer& vertex) {
         using Pica::Shader::OutputVertex;
-        auto AddTriangle = [this](const OutputVertex& v0, const OutputVertex& v1,
+        auto AddTriangle = [](const OutputVertex& v0, const OutputVertex& v1,
                                   const OutputVertex& v2) {
             VideoCore::g_renderer->Rasterizer()->AddTriangle(v0, v1, v2);
         };

src/video_core/rasterizer_cache/morton_swizzle.h

@@ -136,7 +136,7 @@ inline void MortonCopyTile(u32 stride, std::span<std::byte> tile_buffer, std::sp
 }
 
 template <bool morton_to_linear, PixelFormat format>
-static void MortonCopy(u32 stride, u32 height, u32 start_offset,
+static void MortonCopy(u32 stride, u32 height, u32 start_offset, u32 end_offset,
                        std::span<std::byte> linear_buffer,
                        std::span<std::byte> tiled_buffer) {
 
@@ -148,7 +148,6 @@ static void MortonCopy(u32 stride, u32 height, u32 start_offset,
     // becomes zero for 4-bit textures!
     constexpr u32 tile_size = GetFormatBpp(format) * 64 / 8;
     const u32 linear_tile_size = (7 * stride + 8) * aligned_bytes_per_pixel;
-    const u32 end_offset = start_offset + static_cast<u32>(tiled_buffer.size());
 
     // Does this line have any significance?
     //u32 linear_offset = aligned_bytes_per_pixel - bytes_per_pixel;
@@ -216,7 +215,7 @@ static void MortonCopy(u32 stride, u32 height, u32 start_offset,
     }
 }
 
-using MortonFunc = void (*)(u32, u32, u32, std::span<std::byte>, std::span<std::byte>);
+using MortonFunc = void (*)(u32, u32, u32, u32, std::span<std::byte>, std::span<std::byte>);
 
 static constexpr std::array<MortonFunc, 18> UNSWIZZLE_TABLE = {
     MortonCopy<true, PixelFormat::RGBA8>,  // 0

src/video_core/rasterizer_cache/rasterizer_cache.h

@@ -6,6 +6,7 @@
 #include <algorithm>
 #include <unordered_map>
 #include <optional>
+#include <vector>
 #include <boost/range/iterator_range.hpp>
 #include "common/alignment.h"
 #include "common/logging/log.h"
@@ -46,9 +47,9 @@ class RasterizerAccelerated;
 template <class T>
 class RasterizerCache : NonCopyable {
 public:
-    using TextureRuntime = typename T::Runtime;
-    using Surface = std::shared_ptr<typename T::Surface>;
-    using Watcher = SurfaceWatcher<typename T::Surface>;
+    using TextureRuntime = typename T::RuntimeType;
+    using Surface = std::shared_ptr<typename T::SurfaceType>;
+    using Watcher = SurfaceWatcher<typename T::SurfaceType>;
 
 private:
     /// Declare rasterizer interval types
@@ -754,7 +755,7 @@ auto RasterizerCache<T>::GetFillSurface(const GPU::Regs::MemoryFillConfig& confi
     params.type = SurfaceType::Fill;
     params.res_scale = std::numeric_limits<u16>::max();
 
-    Surface new_surface = std::make_shared<typename T::Surface>(params, runtime);
+    Surface new_surface = std::make_shared<typename T::SurfaceType>(params, runtime);
 
     std::memcpy(&new_surface->fill_data[0], &config.value_32bit, 4);
     if (config.fill_32bit) {
@@ -893,32 +894,23 @@ void RasterizerCache<T>::UploadSurface(const Surface& surface, SurfaceInterval i
     ASSERT(load_start >= surface->addr && load_end <= surface->end);
 
     const auto& staging = runtime.FindStaging(
-                surface->width * surface->height * GetBytesPerPixel(surface->pixel_format), true);
+                surface->width * surface->height * 4, true);
     MemoryRef source_ptr = VideoCore::g_memory->GetPhysicalRef(info.addr);
     if (!source_ptr) [[unlikely]] {
         return;
     }
 
     const auto upload_data = source_ptr.GetWriteBytes(load_end - load_start);
-    const u32 start_offset = load_start - surface->addr;
-    const u32 upload_size = static_cast<u32>(upload_data.size());
 
     MICROPROFILE_SCOPE(RasterizerCache_SurfaceLoad);
 
-    if (!surface->is_tiled) {
-        ASSERT(surface->type == SurfaceType::Color);
-
-        const auto dest_buffer = staging.mapped.subspan(start_offset, upload_size);
-        /*if (surface->pixel_format == PixelFormat::RGBA8 && GLES) {
-            Pica::Texture::ConvertABGRToRGBA(upload_data, dest_buffer);
-        } else if (surface->pixel_format == PixelFormat::RGB8 && GLES) {
-            Pica::Texture::ConvertBGRToRGB(upload_data, dest_buffer);
-        } else {
-            std::memcpy(dest_buffer.data(), upload_data.data(), upload_size);
-        }*/
-        std::memcpy(dest_buffer.data(), upload_data.data(), upload_size);
+    if (surface->is_tiled) {
+        std::vector<std::byte> unswizzled_data(staging.size);
+        UnswizzleTexture(*surface, load_start - surface->addr, load_end - surface->addr,
+                         upload_data, unswizzled_data);
+        runtime.FormatConvert(surface->pixel_format, true, unswizzled_data, staging.mapped);
     } else {
-        UnswizzleTexture(*surface, start_offset, upload_data, staging.mapped);
+        runtime.FormatConvert(surface->pixel_format, true, upload_data, staging.mapped);
     }
 
     const BufferTextureCopy upload = {
@@ -939,7 +931,7 @@ void RasterizerCache<T>::DownloadSurface(const Surface& surface, SurfaceInterval
     ASSERT(flush_start >= surface->addr && flush_end <= surface->end);
 
     const auto& staging = runtime.FindStaging(
-                surface->width * surface->height * GetBytesPerPixel(surface->pixel_format), false);
+                surface->width * surface->height * 4, false);
     const SurfaceParams params = surface->FromInterval(interval);
     const BufferTextureCopy download = {
         .buffer_offset = 0,
@@ -956,25 +948,16 @@ void RasterizerCache<T>::DownloadSurface(const Surface& surface, SurfaceInterval
     }
 
     const auto download_dest = dest_ptr.GetWriteBytes(flush_end - flush_start);
-    const u32 start_offset = flush_start - surface->addr;
-    const u32 download_size = static_cast<u32>(download_dest.size());
 
     MICROPROFILE_SCOPE(RasterizerCache_SurfaceFlush);
 
-    if (!surface->is_tiled) {
-        ASSERT(surface->type == SurfaceType::Color);
-
-        const auto download_data = staging.mapped.subspan(start_offset, download_size);
-        /*if (surface->pixel_format == PixelFormat::RGBA8 && GLES) {
-            Pica::Texture::ConvertABGRToRGBA(download_data, download_dest);
-        } else if (surface->pixel_format == PixelFormat::RGB8 && GLES) {
-            Pica::Texture::ConvertBGRToRGB(download_data, download_dest);
-        } else {
-            std::memcpy(download_dest.data(), download_data.data(), download_size);
-        }*/
-        std::memcpy(download_dest.data(), download_data.data(), download_size);
+    if (surface->is_tiled) {
+        std::vector<std::byte> swizzled_data(staging.size);
+        runtime.FormatConvert(surface->pixel_format, false, swizzled_data, swizzled_data);
+        SwizzleTexture(*surface, flush_start - surface->addr, flush_end - surface->addr,
+                       staging.mapped, download_dest);
     } else {
-        SwizzleTexture(*surface, start_offset, staging.mapped, download_dest);
+        runtime.FormatConvert(surface->pixel_format, false, staging.mapped, download_dest);
     }
 }
 
@@ -1228,7 +1211,7 @@ void RasterizerCache<T>::InvalidateRegion(PAddr addr, u32 size, const Surface& r
 
 template <class T>
 auto RasterizerCache<T>::CreateSurface(SurfaceParams& params) -> Surface {
-    Surface surface = std::make_shared<typename T::Surface>(params, runtime);
+    Surface surface = std::make_shared<typename T::SurfaceType>(params, runtime);
     surface->invalid_regions.insert(surface->GetInterval());
 
     return surface;

src/video_core/rasterizer_cache/utils.cpp

@@ -3,30 +3,26 @@
 // Refer to the license.txt file included.
 
 #pragma once
-#include <glad/glad.h>
 #include "common/assert.h"
-#include "core/memory.h"
 #include "video_core/texture/texture_decode.h"
 #include "video_core/rasterizer_cache/morton_swizzle.h"
 #include "video_core/rasterizer_cache/surface_params.h"
 #include "video_core/rasterizer_cache/utils.h"
-#include "video_core/renderer_opengl/gl_vars.h"
-#include "video_core/video_core.h"
 
 namespace VideoCore {
 
-void SwizzleTexture(const SurfaceParams& params, u32 start_offset,
+void SwizzleTexture(const SurfaceParams& params, u32 start_offset, u32 end_offset,
                     std::span<std::byte> source_linear, std::span<std::byte> dest_tiled) {
     const u32 func_index = static_cast<u32>(params.pixel_format);
     const MortonFunc SwizzleImpl = SWIZZLE_TABLE[func_index];
-    SwizzleImpl(params.stride, params.height, start_offset, source_linear, dest_tiled);
+    SwizzleImpl(params.stride, params.height, start_offset, end_offset, source_linear, dest_tiled);
 }
 
-void UnswizzleTexture(const SurfaceParams& params, u32 start_offset,
+void UnswizzleTexture(const SurfaceParams& params, u32 start_offset, u32 end_offset,
                       std::span<std::byte> source_tiled, std::span<std::byte> dest_linear) {
     const u32 func_index = static_cast<u32>(params.pixel_format);
     const MortonFunc UnswizzleImpl = UNSWIZZLE_TABLE[func_index];
-    UnswizzleImpl(params.stride, params.height, start_offset, dest_linear, source_tiled);
+    UnswizzleImpl(params.stride, params.height, start_offset, end_offset, dest_linear, source_tiled);
 }
 
 ClearValue MakeClearValue(SurfaceType type, PixelFormat format, const u8* fill_data) {
@@ -68,4 +64,4 @@ ClearValue MakeClearValue(SurfaceType type, PixelFormat format, const u8* fill_d
     return result;
 }
 
-} // namespace OpenGL
+} // namespace VideoCore

src/video_core/rasterizer_cache/utils.h

@@ -14,7 +14,6 @@ struct HostTextureTag {
     PixelFormat format{};
     u32 width = 0;
     u32 height = 0;
-    u32 levels = 1;
     u32 layers = 1;
 
     auto operator<=>(const HostTextureTag&) const noexcept = default;
@@ -45,7 +44,7 @@ class SurfaceParams;
 
 [[nodiscard]] ClearValue MakeClearValue(SurfaceType type, PixelFormat format, const u8* fill_data);
 
-void SwizzleTexture(const SurfaceParams& params, u32 start_offset,
+void SwizzleTexture(const SurfaceParams& params, u32 start_offset, u32 end_offset,
                     std::span<std::byte> source_linear, std::span<std::byte> dest_tiled);
 
 /**
@@ -56,7 +55,7 @@ void SwizzleTexture(const SurfaceParams& params, u32 start_offset,
  * @param source_tiled The source morton swizzled data.
  * @param dest_linear The output buffer where the generated linear data will be written to.
  */
-void UnswizzleTexture(const SurfaceParams& params, u32 start_offset,
+void UnswizzleTexture(const SurfaceParams& params, u32 start_offset, u32 end_offset,
                       std::span<std::byte> source_tiled, std::span<std::byte> dest_linear);
 
 } // namespace VideoCore

src/video_core/rasterizer_interface.h

@@ -9,10 +9,6 @@
 #include "common/common_types.h"
 #include "core/hw/gpu.h"
 
-namespace OpenGL {
-struct ScreenInfo;
-}
-
 namespace Pica::Shader {
 struct OutputVertex;
 } // namespace Pica::Shader
@@ -73,13 +69,6 @@ public:
         return false;
     }
 
-    /// Attempt to use a faster method to display the framebuffer to screen
-    virtual bool AccelerateDisplay(const GPU::Regs::FramebufferConfig& config,
-                                   PAddr framebuffer_addr, u32 pixel_stride,
-                                   OpenGL::ScreenInfo& screen_info) {
-        return false;
-    }
-
     /// Attempt to draw using hardware shaders
     virtual bool AccelerateDrawBatch(bool is_indexed) {
         return false;

src/video_core/regs_framebuffer.h

@@ -159,6 +159,7 @@ struct FramebufferRegs {
         } stencil_test;
 
         union {
+            u32 depth_color_mask;
             BitField<0, 1, u32> depth_test_enable;
             BitField<4, 3, CompareFunc> depth_test_func;
             BitField<8, 1, u32> red_enable;

src/video_core/regs_rasterizer.h

@@ -6,8 +6,7 @@
 
 #include <array>
 #include "common/bit_field.h"
-#include "common/common_funcs.h"
-#include "common/common_types.h"
+#include "common/vector_math.h"
 #include "video_core/pica_types.h"
 
 namespace Pica {
@@ -18,7 +17,7 @@ struct RasterizerRegs {
         KeepAll = 0,
         KeepClockWise = 1,
         KeepCounterClockWise = 2,
-        // TODO: What does the third value imply?
+        KeepAll2 = 3
     };
 
     union {

src/video_core/renderer_base.cpp

@@ -21,7 +21,3 @@ void RendererBase::UpdateCurrentFramebufferLayout(bool is_portrait_mode) {
         update_layout(*secondary_window);
     }
 }
-
-void RendererBase::Sync() {
-    rasterizer->SyncEntireState();
-}

src/video_core/renderer_base.h

@@ -21,6 +21,9 @@ public:
     /// Initialize the renderer
     virtual VideoCore::ResultStatus Init() = 0;
 
+    /// Returns the rasterizer owned by the renderer
+    virtual VideoCore::RasterizerInterface* Rasterizer() = 0;
+
     /// Shutdown the renderer
     virtual void ShutDown() = 0;
 
@@ -40,6 +43,8 @@ public:
     /// Cleans up after video dumping is ended
     virtual void CleanupVideoDumping() = 0;
 
+    virtual void Sync() = 0;
+
     /// Updates the framebuffer layout of the contained render window handle.
     void UpdateCurrentFramebufferLayout(bool is_portrait_mode = {});
 
@@ -54,10 +59,6 @@ public:
         return m_current_frame;
     }
 
-    VideoCore::RasterizerInterface* Rasterizer() const {
-        return rasterizer.get();
-    }
-
     Frontend::EmuWindow& GetRenderWindow() {
         return render_window;
     }
@@ -66,12 +67,9 @@ public:
         return render_window;
     }
 
-    void Sync();
-
 protected:
     Frontend::EmuWindow& render_window;    ///< Reference to the render window handle.
     Frontend::EmuWindow* secondary_window; ///< Reference to the secondary render window handle.
-    std::unique_ptr<VideoCore::RasterizerInterface> rasterizer;
     f32 m_current_fps = 0.0f; ///< Current framerate, should be set by the renderer
     int m_current_frame = 0;  ///< Current frame, should be set by the renderer
 };

src/video_core/renderer_opengl/gl_driver.cpp

@@ -112,14 +112,15 @@ void Driver::ReportDriverInfo() {
 }
 
 void Driver::DeduceVendor() {
-    if (gpu_vendor.contains("NVIDIA")) {
+    if (gpu_vendor.find("NVIDIA") != gpu_vendor.npos) {
         vendor = Vendor::Nvidia;
-    } else if (gpu_vendor.contains("ATI") ||
-               gpu_vendor.contains("Advanced Micro Devices")) {
+    } else if ((gpu_vendor.find("ATI") != gpu_vendor.npos) ||
+               (gpu_vendor.find("AMD") != gpu_vendor.npos) ||
+               (gpu_vendor.find("Advanced Micro Devices") != gpu_vendor.npos)) {
         vendor = Vendor::AMD;
-    } else if (gpu_vendor.contains("Intel")) {
+    } else if (gpu_vendor.find("Intel") != gpu_vendor.npos) {
         vendor = Vendor::Intel;
-    } else if (gpu_vendor.contains("GDI Generic")) {
+    } else if (gpu_vendor.find("GDI Generic") != gpu_vendor.npos) {
         vendor = Vendor::Generic;
     }
 }

src/video_core/renderer_opengl/gl_format_reinterpreter.cpp

@@ -243,17 +243,12 @@ private:
 };
 
 FormatReinterpreterOpenGL::FormatReinterpreterOpenGL() {
-    const std::string_view vendor{reinterpret_cast<const char*>(glGetString(GL_VENDOR))};
-    const std::string_view version{reinterpret_cast<const char*>(glGetString(GL_VERSION))};
-
     auto Register = [this](VideoCore::PixelFormat dest, std::unique_ptr<FormatReinterpreterBase>&& obj) {
         const u32 dst_index = static_cast<u32>(dest);
         return reinterpreters[dst_index].push_back(std::move(obj));
     };
 
     Register(VideoCore::PixelFormat::RGBA8, std::make_unique<ShaderD24S8toRGBA8>());
-    LOG_INFO(Render_OpenGL, "Using shader for D24S8 to RGBA8 reinterpretation");
-
     Register(VideoCore::PixelFormat::RGB5A1, std::make_unique<RGBA4toRGB5A1>());
 }
 

src/video_core/renderer_opengl/gl_rasterizer.h

@@ -20,6 +20,9 @@ class EmuWindow;
 }
 
 namespace OpenGL {
+
+struct ScreenInfo;
+
 class Driver;
 class ShaderProgramManager;
 
@@ -43,7 +46,7 @@ public:
     bool AccelerateTextureCopy(const GPU::Regs::DisplayTransferConfig& config) override;
     bool AccelerateFill(const GPU::Regs::MemoryFillConfig& config) override;
     bool AccelerateDisplay(const GPU::Regs::FramebufferConfig& config, PAddr framebuffer_addr,
-                           u32 pixel_stride, ScreenInfo& screen_info) override;
+                           u32 pixel_stride, ScreenInfo& screen_info);
     bool AccelerateDrawBatch(bool is_indexed) override;
 
     /// Syncs entire status to match PICA registers

src/video_core/renderer_opengl/gl_shader_manager.h

@@ -41,10 +41,12 @@ struct LightSrc {
     float dist_atten_scale;
 };
 
-/// Uniform structure for the Uniform Buffer Object, all vectors must be 16-byte aligned
-// NOTE: Always keep a vec4 at the end. The GL spec is not clear wether the alignment at
-//       the end of a uniform block is included in UNIFORM_BLOCK_DATA_SIZE or not.
-//       Not following that rule will cause problems on some AMD drivers.
+/**
+ * Uniform structure for the Uniform Buffer Object, all vectors must be 16-byte aligned
+ * NOTE: Always keep a vec4 at the end. The GL spec is not clear wether the alignment at
+ *       the end of a uniform block is included in UNIFORM_BLOCK_DATA_SIZE or not.
+ *       Not following that rule will cause problems on some AMD drivers.
+ */
 struct UniformData {
     int framebuffer_scale;
     int alphatest_ref;
@@ -81,8 +83,10 @@ static_assert(sizeof(UniformData) == 0x4F0,
 static_assert(sizeof(UniformData) < 16384,
               "UniformData structure must be less than 16kb as per the OpenGL spec");
 
-/// Uniform struct for the Uniform Buffer Object that contains PICA vertex/geometry shader uniforms.
-// NOTE: the same rule from UniformData also applies here.
+/**
+ * Uniform struct for the Uniform Buffer Object that contains PICA vertex/geometry shader uniforms.
+ * NOTE: the same rule from UniformData also applies here.
+ */
 struct PicaUniformsData {
     void SetFromRegs(const Pica::ShaderRegs& regs, const Pica::Shader::ShaderSetup& setup);
 

src/video_core/renderer_opengl/gl_texture_runtime.cpp

@@ -124,6 +124,17 @@ const FormatTuple& TextureRuntime::GetFormatTuple(VideoCore::PixelFormat pixel_f
     return DEFAULT_TUPLE;
 }
 
+void TextureRuntime::FormatConvert(VideoCore::PixelFormat format,  bool upload,
+                                   std::span<std::byte> source, std::span<std::byte> dest) {
+    if (format == VideoCore::PixelFormat::RGBA8 && driver.IsOpenGLES()) {
+        Pica::Texture::ConvertABGRToRGBA(source, dest);
+    } else if (format == VideoCore::PixelFormat::RGB8 && driver.IsOpenGLES()) {
+        Pica::Texture::ConvertBGRToRGB(source, dest);
+    } else {
+        std::memcpy(dest.data(), source.data(), source.size());
+    }
+}
+
 OGLTexture TextureRuntime::Allocate(u32 width, u32 height, VideoCore::PixelFormat format,
                                     VideoCore::TextureType type) {
 
@@ -302,9 +313,20 @@ Surface::Surface(VideoCore::SurfaceParams& params, TextureRuntime& runtime)
     texture = runtime.Allocate(GetScaledWidth(), GetScaledHeight(), params.pixel_format, texture_type);
 }
 
-MICROPROFILE_DEFINE(RasterizerCache_TextureUL, "RasterizerCache", "Texture Upload", MP_RGB(128, 192, 64));
+Surface::~Surface() {
+    const VideoCore::HostTextureTag tag = {
+        .format = pixel_format,
+        .width = GetScaledWidth(),
+        .height = GetScaledHeight(),
+        .layers = texture_type == VideoCore::TextureType::CubeMap ? 6u : 1u
+    };
+
+    runtime.texture_recycler.emplace(tag, std::move(texture));
+}
+
+MICROPROFILE_DEFINE(OpenGL_Upload, "OpenGLSurface", "Texture Upload", MP_RGB(128, 192, 64));
 void Surface::Upload(const VideoCore::BufferTextureCopy& upload, const StagingBuffer& staging) {
-    MICROPROFILE_SCOPE(RasterizerCache_TextureUL);
+    MICROPROFILE_SCOPE(OpenGL_Upload);
 
     // Ensure no bad interactions with GL_UNPACK_ALIGNMENT
     ASSERT(stride * GetBytesPerPixel(pixel_format) % 4 == 0);
@@ -327,8 +349,7 @@ void Surface::Upload(const VideoCore::BufferTextureCopy& upload, const StagingBu
                         upload.texture_rect.left, upload.texture_rect.bottom,
                         upload.texture_rect.GetWidth(),
                         upload.texture_rect.GetHeight(),
-                        tuple.format, tuple.type,
-                        reinterpret_cast<void*>(upload.buffer_offset));
+                        tuple.format, tuple.type, 0);
     }
 
     glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
@@ -339,9 +360,9 @@ void Surface::Upload(const VideoCore::BufferTextureCopy& upload, const StagingBu
     InvalidateAllWatcher();
 }
 
-MICROPROFILE_DEFINE(RasterizerCache_TextureDL, "RasterizerCache", "Texture Download", MP_RGB(128, 192, 64));
+MICROPROFILE_DEFINE(OpenGL_Download, "OpenGLSurface", "Texture Download", MP_RGB(128, 192, 64));
 void Surface::Download(const VideoCore::BufferTextureCopy& download, const StagingBuffer& staging) {
-    MICROPROFILE_SCOPE(RasterizerCache_TextureDL);
+    MICROPROFILE_SCOPE(OpenGL_Download);
 
     // Ensure no bad interactions with GL_PACK_ALIGNMENT
     ASSERT(stride * GetBytesPerPixel(pixel_format) % 4 == 0);
@@ -361,7 +382,7 @@ void Surface::Download(const VideoCore::BufferTextureCopy& download, const Stagi
         const auto& tuple = runtime.GetFormatTuple(pixel_format);
         glReadPixels(download.texture_rect.left, download.texture_rect.bottom,
                      download.texture_rect.GetWidth(), download.texture_rect.GetHeight(),
-                     tuple.format, tuple.type, reinterpret_cast<void*>(download.buffer_offset));
+                     tuple.format, tuple.type, 0);
     }
 
     glBindBuffer(GL_PIXEL_PACK_BUFFER, 0);
@@ -390,11 +411,9 @@ void Surface::ScaledDownload(const VideoCore::BufferTextureCopy& download) {
     if (driver.IsOpenGLES()) {
         const auto& downloader_es = runtime.GetDownloaderES();
         downloader_es.GetTexImage(GL_TEXTURE_2D, 0, tuple.format, tuple.type,
-                                  rect_height, rect_width,
-                                  reinterpret_cast<void*>(download.buffer_offset));
+                                  rect_height, rect_width, 0);
     } else {
-        glGetTexImage(GL_TEXTURE_2D, 0, tuple.format, tuple.type,
-                      reinterpret_cast<void*>(download.buffer_offset));
+        glGetTexImage(GL_TEXTURE_2D, 0, tuple.format, tuple.type, 0);
     }
 }
 
@@ -409,7 +428,7 @@ void Surface::ScaledUpload(const VideoCore::BufferTextureCopy& upload) {
 
     const auto& tuple = runtime.GetFormatTuple(pixel_format);
     glTexSubImage2D(GL_TEXTURE_2D, upload.texture_level, 0, 0, rect_width, rect_height,
-                    tuple.format, tuple.type, reinterpret_cast<void*>(upload.buffer_offset));
+                    tuple.format, tuple.type, 0);
 
     const auto scaled_rect = upload.texture_rect * res_scale;
     const auto unscaled_rect = VideoCore::Rect2D{0, rect_height, rect_width, 0};

src/video_core/renderer_opengl/gl_texture_runtime.h

@@ -70,6 +70,10 @@ public:
     /// Returns the OpenGL format tuple associated with the provided pixel format
     const FormatTuple& GetFormatTuple(VideoCore::PixelFormat pixel_format);
 
+    /// Performs required format convertions on the staging data
+    void FormatConvert(VideoCore::PixelFormat format, bool upload,
+                       std::span<std::byte> source, std::span<std::byte> dest);
+
     /// Allocates an OpenGL texture with the specified dimentions and format
     OGLTexture Allocate(u32 width, u32 height, VideoCore::PixelFormat format,
                         VideoCore::TextureType type);
@@ -124,7 +128,7 @@ private:
 class Surface : public VideoCore::SurfaceBase<Surface> {
 public:
     Surface(VideoCore::SurfaceParams& params, TextureRuntime& runtime);
-    ~Surface() override = default;
+    ~Surface() override;
 
     /// Uploads pixel data in staging to a rectangle region of the surface texture
     void Upload(const VideoCore::BufferTextureCopy& upload, const StagingBuffer& staging);
@@ -148,8 +152,8 @@ public:
 };
 
 struct Traits {
-    using Runtime = TextureRuntime;
-    using Surface = Surface;
+    using RuntimeType = TextureRuntime;
+    using SurfaceType = Surface;
 };
 
 using RasterizerCache = VideoCore::RasterizerCache<Traits>;

src/video_core/renderer_opengl/renderer_opengl.cpp

@@ -15,7 +15,6 @@
 #include "core/memory.h"
 #include "core/tracer/recorder.h"
 #include "video_core/debug_utils/debug_utils.h"
-#include "video_core/rasterizer_interface.h"
 #include "video_core/renderer_opengl/gl_rasterizer.h"
 #include "video_core/renderer_opengl/gl_shader_util.h"
 #include "video_core/renderer_opengl/gl_state.h"
@@ -383,6 +382,10 @@ VideoCore::ResultStatus RendererOpenGL::Init() {
     return VideoCore::ResultStatus::Success;
 }
 
+VideoCore::RasterizerInterface* RendererOpenGL::Rasterizer() {
+    return rasterizer.get();
+}
+
 /// Shutdown the renderer
 void RendererOpenGL::ShutDown() {}
 
@@ -580,7 +583,7 @@ void RendererOpenGL::LoadFBToScreenInfo(const GPU::Regs::FramebufferConfig& fram
     // only allows rows to have a memory alignement of 4.
     ASSERT(pixel_stride % 4 == 0);
 
-    if (!Rasterizer()->AccelerateDisplay(framebuffer, framebuffer_addr,
+    if (!rasterizer->AccelerateDisplay(framebuffer, framebuffer_addr,
                                          static_cast<u32>(pixel_stride), screen_info)) {
         // Reset the screen info's display texture to its own permanent texture
         screen_info.display_texture = screen_info.texture.resource.handle;
@@ -1214,4 +1217,8 @@ void RendererOpenGL::CleanupVideoDumping() {
     mailbox->free_cv.notify_one();
 }
 
+void RendererOpenGL::Sync() {
+    rasterizer->SyncEntireState();
+}
+
 } // namespace OpenGL

src/video_core/renderer_opengl/renderer_opengl.h

@@ -55,18 +55,16 @@ struct PresentationTexture {
     OGLTexture texture;
 };
 
+class RasterizerOpenGL;
+
 class RendererOpenGL : public RendererBase {
 public:
     explicit RendererOpenGL(Frontend::EmuWindow& window, Frontend::EmuWindow* secondary_window);
     ~RendererOpenGL() override;
 
-    /// Initialize the renderer
     VideoCore::ResultStatus Init() override;
-
-    /// Shutdown the renderer
+    VideoCore::RasterizerInterface* Rasterizer() override;
     void ShutDown() override;
-
-    /// Finalizes rendering the guest frame
     void SwapBuffers() override;
 
     /// Draws the latest frame from texture mailbox to the currently bound draw framebuffer in this
@@ -75,9 +73,8 @@ public:
 
     /// Prepares for video dumping (e.g. create necessary buffers, etc)
     void PrepareVideoDumping() override;
-
-    /// Cleans up after video dumping is ended
     void CleanupVideoDumping() override;
+    void Sync() override;
 
 private:
     void InitOpenGLObjects();
@@ -108,6 +105,7 @@ private:
 private:
     Driver driver;
     OpenGLState state;
+    std::unique_ptr<RasterizerOpenGL> rasterizer;
 
     // OpenGL object IDs
     OGLVertexArray vertex_array;

src/video_core/renderer_vulkan/pica_to_vk.h

@@ -0,0 +1,278 @@
+// Copyright 2022 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+#include <array>
+#include "common/logging/log.h"
+#include "core/core.h"
+#include "video_core/regs.h"
+#include "video_core/renderer_vulkan/vk_common.h"
+
+namespace PicaToVK {
+
+using TextureFilter = Pica::TexturingRegs::TextureConfig::TextureFilter;
+
+struct FilterInfo {
+    vk::Filter mag_filter, min_filter;
+    vk::SamplerMipmapMode mip_mode;
+};
+
+inline FilterInfo TextureFilterMode(TextureFilter mag, TextureFilter min, TextureFilter mip) {
+    constexpr std::array filter_table = {
+        vk::Filter::eNearest,
+        vk::Filter::eLinear
+    };
+
+    constexpr std::array mipmap_table = {
+        vk::SamplerMipmapMode::eNearest,
+        vk::SamplerMipmapMode::eLinear
+    };
+
+    return FilterInfo{filter_table.at(mag), filter_table.at(min), mipmap_table.at(mip)};
+}
+
+inline vk::Filter TextureFilterMode(TextureFilter mode) {
+    switch (mode) {
+    case TextureFilter::Linear:
+        return vk::Filter::eLinear;
+    case TextureFilter::Nearest:
+        return vk::Filter::eNearest;
+    default:
+        LOG_CRITICAL(Render_Vulkan, "Unknown texture filtering mode {}", mode);
+        UNIMPLEMENTED();
+    }
+
+    return vk::Filter::eLinear;
+}
+
+inline vk::SamplerMipmapMode TextureMipFilterMode(TextureFilter mip) {
+    switch (mip) {
+    case TextureFilter::Linear:
+        return vk::SamplerMipmapMode::eLinear;
+    case TextureFilter::Nearest:
+        return vk::SamplerMipmapMode::eNearest;
+    default:
+        LOG_CRITICAL(Render_Vulkan, "Unknown texture mipmap filtering mode {}", mip);
+        UNIMPLEMENTED();
+    }
+
+    return vk::SamplerMipmapMode::eLinear;
+}
+
+inline vk::SamplerAddressMode WrapMode(Pica::TexturingRegs::TextureConfig::WrapMode mode) {
+    static constexpr std::array<vk::SamplerAddressMode, 8> wrap_mode_table{{
+        vk::SamplerAddressMode::eClampToEdge,
+        vk::SamplerAddressMode::eClampToBorder,
+        vk::SamplerAddressMode::eRepeat,
+        vk::SamplerAddressMode::eMirroredRepeat,
+        // TODO(wwylele): ClampToEdge2 and ClampToBorder2 are not properly implemented here. See the
+        // comments in enum WrapMode.
+        vk::SamplerAddressMode::eClampToEdge,
+        vk::SamplerAddressMode::eClampToBorder,
+        vk::SamplerAddressMode::eRepeat,
+        vk::SamplerAddressMode::eRepeat,
+    }};
+
+    const auto index = static_cast<std::size_t>(mode);
+
+    // Range check table for input
+    if (index >= wrap_mode_table.size()) {
+        LOG_CRITICAL(Render_Vulkan, "Unknown texture wrap mode {}", index);
+        UNREACHABLE();
+
+        return vk::SamplerAddressMode::eClampToEdge;
+    }
+
+    if (index > 3) {
+        Core::System::GetInstance().TelemetrySession().AddField(
+            Common::Telemetry::FieldType::Session, "VideoCore_Pica_UnsupportedTextureWrapMode",
+            static_cast<u32>(index));
+        LOG_WARNING(Render_Vulkan, "Using texture wrap mode {}", index);
+    }
+
+    return wrap_mode_table[index];
+}
+
+inline vk::BlendOp BlendEquation(Pica::FramebufferRegs::BlendEquation equation) {
+    static constexpr std::array<vk::BlendOp, 5> blend_equation_table{{
+        vk::BlendOp::eAdd,
+        vk::BlendOp::eSubtract,
+        vk::BlendOp::eReverseSubtract,
+        vk::BlendOp::eMin,
+        vk::BlendOp::eMax,
+    }};
+
+    const auto index = static_cast<std::size_t>(equation);
+
+    // Range check table for input
+    if (index >= blend_equation_table.size()) {
+        LOG_CRITICAL(Render_Vulkan, "Unknown blend equation {}", index);
+
+        // This return value is hwtested, not just a stub
+        return vk::BlendOp::eAdd;
+    }
+
+    return blend_equation_table[index];
+}
+
+inline vk::BlendFactor BlendFunc(Pica::FramebufferRegs::BlendFactor factor) {
+    static constexpr std::array<vk::BlendFactor, 15> blend_func_table{{
+        vk::BlendFactor::eZero,                 // BlendFactor::Zero
+        vk::BlendFactor::eOne,                  // BlendFactor::One
+        vk::BlendFactor::eSrcColor,             // BlendFactor::SourceColor
+        vk::BlendFactor::eOneMinusSrcColor,     // BlendFactor::OneMinusSourceColor
+        vk::BlendFactor::eDstColor,             // BlendFactor::DestColor
+        vk::BlendFactor::eOneMinusDstColor,     // BlendFactor::OneMinusDestColor
+        vk::BlendFactor::eSrcAlpha,             // BlendFactor::SourceAlpha
+        vk::BlendFactor::eOneMinusSrcAlpha,     // BlendFactor::OneMinusSourceAlpha
+        vk::BlendFactor::eDstAlpha,             // BlendFactor::DestAlpha
+        vk::BlendFactor::eOneMinusDstAlpha,     // BlendFactor::OneMinusDestAlpha
+        vk::BlendFactor::eConstantColor,        // BlendFactor::ConstantColor
+        vk::BlendFactor::eOneMinusConstantColor,// BlendFactor::OneMinusConstantColor
+        vk::BlendFactor::eConstantAlpha,        // BlendFactor::ConstantAlpha
+        vk::BlendFactor::eOneMinusConstantAlpha,// BlendFactor::OneMinusConstantAlpha
+        vk::BlendFactor::eSrcAlphaSaturate,     // BlendFactor::SourceAlphaSaturate
+    }};
+
+    const auto index = static_cast<std::size_t>(factor);
+
+    // Range check table for input
+    if (index >= blend_func_table.size()) {
+        LOG_CRITICAL(Render_Vulkan, "Unknown blend factor {}", index);
+        UNREACHABLE();
+
+        return vk::BlendFactor::eOne;
+    }
+
+    return blend_func_table[index];
+}
+
+inline vk::LogicOp LogicOp(Pica::FramebufferRegs::LogicOp op) {
+    static constexpr std::array<vk::LogicOp, 16> logic_op_table{{
+        vk::LogicOp::eClear,        // Clear
+        vk::LogicOp::eAnd,          // And
+        vk::LogicOp::eAndReverse,   // AndReverse
+        vk::LogicOp::eCopy,         // Copy
+        vk::LogicOp::eSet,          // Set
+        vk::LogicOp::eCopyInverted, // CopyInverted
+        vk::LogicOp::eNoOp,         // NoOp
+        vk::LogicOp::eInvert,       // Invert
+        vk::LogicOp::eNand,         // Nand
+        vk::LogicOp::eOr,           // Or
+        vk::LogicOp::eNor,          // Nor
+        vk::LogicOp::eXor,          // Xor
+        vk::LogicOp::eEquivalent,   // Equiv
+        vk::LogicOp::eAndInverted,  // AndInverted
+        vk::LogicOp::eOrReverse,    // OrReverse
+        vk::LogicOp::eOrInverted,   // OrInverted
+    }};
+
+    const auto index = static_cast<std::size_t>(op);
+
+    // Range check table for input
+    if (index >= logic_op_table.size()) {
+        LOG_CRITICAL(Render_Vulkan, "Unknown logic op {}", index);
+        UNREACHABLE();
+
+        return vk::LogicOp::eCopy;
+    }
+
+    return logic_op_table[index];
+}
+
+inline vk::CompareOp CompareFunc(Pica::FramebufferRegs::CompareFunc func) {
+    static constexpr std::array<vk::CompareOp, 8> compare_func_table{{
+        vk::CompareOp::eNever,          // CompareFunc::Never
+        vk::CompareOp::eAlways,         // CompareFunc::Always
+        vk::CompareOp::eEqual,          // CompareFunc::Equal
+        vk::CompareOp::eNotEqual,       // CompareFunc::NotEqual
+        vk::CompareOp::eLess,           // CompareFunc::LessThan
+        vk::CompareOp::eLessOrEqual,    // CompareFunc::LessThanOrEqual
+        vk::CompareOp::eGreater,        // CompareFunc::GreaterThan
+        vk::CompareOp::eGreaterOrEqual, // CompareFunc::GreaterThanOrEqual
+    }};
+
+    const auto index = static_cast<std::size_t>(func);
+
+    // Range check table for input
+    if (index >= compare_func_table.size()) {
+        LOG_CRITICAL(Render_Vulkan, "Unknown compare function {}", index);
+        UNREACHABLE();
+
+        return vk::CompareOp::eAlways;
+    }
+
+    return compare_func_table[index];
+}
+
+inline vk::StencilOp StencilOp(Pica::FramebufferRegs::StencilAction action) {
+    static constexpr std::array<vk::StencilOp, 8> stencil_op_table{{
+        vk::StencilOp::eKeep,               // StencilAction::Keep
+        vk::StencilOp::eZero,               // StencilAction::Zero
+        vk::StencilOp::eReplace,            // StencilAction::Replace
+        vk::StencilOp::eIncrementAndClamp,  // StencilAction::Increment
+        vk::StencilOp::eDecrementAndClamp,  // StencilAction::Decrement
+        vk::StencilOp::eInvert,             // StencilAction::Invert
+        vk::StencilOp::eIncrementAndWrap,   // StencilAction::IncrementWrap
+        vk::StencilOp::eDecrementAndWrap,   // StencilAction::DecrementWrap
+    }};
+
+    const auto index = static_cast<std::size_t>(action);
+
+    // Range check table for input
+    if (index >= stencil_op_table.size()) {
+        LOG_CRITICAL(Render_Vulkan, "Unknown stencil op {}", index);
+        UNREACHABLE();
+
+        return vk::StencilOp::eKeep;
+    }
+
+    return stencil_op_table[index];
+}
+
+inline vk::PrimitiveTopology PrimitiveTopology(Pica::PipelineRegs::TriangleTopology topology) {
+    switch (topology) {
+    case Pica::PipelineRegs::TriangleTopology::Fan:
+        return vk::PrimitiveTopology::eTriangleFan;
+    case Pica::PipelineRegs::TriangleTopology::List:
+    case Pica::PipelineRegs::TriangleTopology::Shader:
+        return vk::PrimitiveTopology::eTriangleList;
+    case Pica::PipelineRegs::TriangleTopology::Strip:
+        return vk::PrimitiveTopology::eTriangleStrip;
+    }
+}
+
+inline vk::CullModeFlags CullMode(Pica::RasterizerRegs::CullMode mode) {
+    switch (mode) {
+    case Pica::RasterizerRegs::CullMode::KeepAll:
+    case Pica::RasterizerRegs::CullMode::KeepAll2:
+        return vk::CullModeFlagBits::eNone;
+    case Pica::RasterizerRegs::CullMode::KeepClockWise:
+    case Pica::RasterizerRegs::CullMode::KeepCounterClockWise:
+        return vk::CullModeFlagBits::eBack;
+    }
+}
+
+inline vk::FrontFace FrontFace(Pica::RasterizerRegs::CullMode mode) {
+    switch (mode) {
+    case Pica::RasterizerRegs::CullMode::KeepAll:
+    case Pica::RasterizerRegs::CullMode::KeepAll2:
+    case Pica::RasterizerRegs::CullMode::KeepClockWise:
+        return vk::FrontFace::eCounterClockwise;
+    case Pica::RasterizerRegs::CullMode::KeepCounterClockWise:
+        return vk::FrontFace::eClockwise;
+    }
+}
+
+inline Common::Vec4f ColorRGBA8(const u32 color) {
+    const auto rgba =
+        Common::Vec4u{color >> 0 & 0xFF, color >> 8 & 0xFF, color >> 16 & 0xFF, color >> 24 & 0xFF};
+    return rgba / 255.0f;
+}
+
+inline Common::Vec3f LightColor(const Pica::LightingRegs::LightColor& color) {
+    return Common::Vec3u{color.r, color.g, color.b} / 255.0f;
+}
+
+} // namespace PicaToGL

src/video_core/renderer_vulkan/renderer_vulkan.h

@@ -0,0 +1,126 @@
+// Copyright 2022 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <array>
+#include <glm/glm.hpp>
+#include "common/common_types.h"
+#include "common/math_util.h"
+#include "core/hw/gpu.h"
+#include "video_core/renderer_base.h"
+#include "video_core/renderer_vulkan/vk_swapchain.h"
+#include "video_core/renderer_vulkan/vk_instance.h"
+#include "video_core/renderer_vulkan/vk_renderpass_cache.h"
+#include "video_core/renderer_vulkan/vk_texture_runtime.h"
+
+namespace Layout {
+struct FramebufferLayout;
+}
+
+namespace Vulkan {
+
+/// Structure used for storing information about the textures for each 3DS screen
+struct TextureInfo {
+    ImageAlloc alloc;
+    u32 width;
+    u32 height;
+    GPU::Regs::PixelFormat format;
+};
+
+/// Structure used for storing information about the display target for each 3DS screen
+struct ScreenInfo {
+    ImageAlloc* display_texture = nullptr;
+    Common::Rectangle<float> display_texcoords;
+    TextureInfo texture;
+    vk::Sampler sampler;
+};
+
+// Uniform data used for presenting the 3DS screens
+struct PresentUniformData {
+    glm::mat4 modelview;
+    Common::Vec4f i_resolution;
+    Common::Vec4f o_resolution;
+    int screen_id_l = 0;
+    int screen_id_r = 0;
+    int layer = 0;
+    int reverse_interlaced = 0;
+
+    // Returns an immutable byte view of the uniform data
+    auto AsBytes() const {
+        return std::as_bytes(std::span{this, 1});
+    }
+};
+
+static_assert(sizeof(PresentUniformData) < 256, "PresentUniformData must be below 256 bytes!");
+
+constexpr u32 PRESENT_PIPELINES = 3;
+
+class RasterizerVulkan;
+
+class RendererVulkan : public RendererBase {
+public:
+    RendererVulkan(Frontend::EmuWindow& window);
+    ~RendererVulkan() override;
+
+    VideoCore::ResultStatus Init() override;
+    VideoCore::RasterizerInterface* Rasterizer() override;
+    void ShutDown() override;
+    void SwapBuffers() override;
+    void TryPresent(int timeout_ms) override {}
+    void PrepareVideoDumping() override {}
+    void CleanupVideoDumping() override {}
+    void Sync() override;
+
+private:
+    void ReloadSampler();
+    void ReloadPipeline();
+    void CompileShaders();
+    void BuildLayouts();
+    void BuildPipelines();
+    void ConfigureFramebufferTexture(TextureInfo& texture, const GPU::Regs::FramebufferConfig& framebuffer);
+    void ConfigureRenderPipeline();
+    void PrepareRendertarget();
+    void BeginRendering();
+
+    void DrawScreens(const Layout::FramebufferLayout& layout, bool flipped);
+    void DrawSingleScreenRotated(u32 screen_id, float x, float y, float w, float h);
+    void DrawSingleScreen(u32 screen_id, float x, float y, float w, float h);
+    void DrawSingleScreenStereoRotated(u32 screen_id_l, u32 screen_id_r, float x, float y, float w, float h);
+    void DrawSingleScreenStereo(u32 screen_id_l, u32 screen_id_r, float x, float y, float w, float h);
+
+    void UpdateFramerate();
+
+    /// Loads framebuffer from emulated memory into the display information structure
+    void LoadFBToScreenInfo(const GPU::Regs::FramebufferConfig& framebuffer,
+                            ScreenInfo& screen_info, bool right_eye);
+
+private:
+    Instance instance;
+    TaskScheduler scheduler;
+    RenderpassCache renderpass_cache;
+    TextureRuntime runtime;
+    Swapchain swapchain;
+    std::unique_ptr<RasterizerVulkan> rasterizer;
+    StreamBuffer vertex_buffer;
+
+    // Present pipelines (Normal, Anaglyph, Interlaced)
+    vk::PipelineLayout present_pipeline_layout;
+    vk::DescriptorSetLayout present_descriptor_layout;
+    vk::DescriptorUpdateTemplate present_update_template;
+    std::array<vk::Pipeline, PRESENT_PIPELINES> present_pipelines;
+    std::array<vk::DescriptorSet, PRESENT_PIPELINES> present_descriptor_sets;
+    std::array<vk::ShaderModule, PRESENT_PIPELINES> present_shaders;
+    std::array<vk::Sampler, 2> present_samplers;
+    vk::ShaderModule present_vertex_shader;
+    u32 current_pipeline = 0;
+    u32 current_sampler = 0;
+
+    /// Display information for top and bottom screens respectively
+    std::array<ScreenInfo, 3> screen_infos{};
+    PresentUniformData draw_info{};
+    vk::ClearColorValue clear_color{};
+};
+
+} // namespace Vulkan

src/video_core/renderer_vulkan/vk_common.cpp

@@ -0,0 +1,9 @@
+// Copyright 2022 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#define VMA_IMPLEMENTATION
+#include "video_core/renderer_vulkan/vk_common.h"
+
+// Store the dispatch loader here
+VULKAN_HPP_DEFAULT_DISPATCH_LOADER_DYNAMIC_STORAGE

src/video_core/renderer_vulkan/vk_common.h

@@ -0,0 +1,72 @@
+// Copyright 2022 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "common/common_types.h"
+
+// Include vulkan-hpp header
+#define VK_NO_PROTOTYPES 1
+#define VULKAN_HPP_DISPATCH_LOADER_DYNAMIC 1
+#include <vulkan/vulkan.hpp>
+
+// Include Vulkan memory allocator
+#define VMA_STATIC_VULKAN_FUNCTIONS 0
+#define VMA_DYNAMIC_VULKAN_FUNCTIONS 1
+#define VMA_VULKAN_VERSION 1001000 // Vulkan 1.1
+#include <vk_mem_alloc.h>
+
+namespace Vulkan {
+
+constexpr u32 SCHEDULER_COMMAND_COUNT = 4;
+
+/// Return the image aspect associated on the provided format
+constexpr vk::ImageAspectFlags GetImageAspect(vk::Format format) {
+    switch (format) {
+    case vk::Format::eD16UnormS8Uint:
+    case vk::Format::eD24UnormS8Uint:
+    case vk::Format::eX8D24UnormPack32:
+    case vk::Format::eD32SfloatS8Uint:
+        return vk::ImageAspectFlagBits::eStencil | vk::ImageAspectFlagBits::eDepth;
+        break;
+    case vk::Format::eD16Unorm:
+    case vk::Format::eD32Sfloat:
+        return vk::ImageAspectFlagBits::eDepth;
+        break;
+    default:
+        return vk::ImageAspectFlagBits::eColor;
+    }
+}
+
+/// Returns a bit mask with the required usage of a format with a particular aspect
+constexpr vk::ImageUsageFlags GetImageUsage(vk::ImageAspectFlags aspect) {
+    auto usage = vk::ImageUsageFlagBits::eSampled |
+            vk::ImageUsageFlagBits::eTransferDst |
+            vk::ImageUsageFlagBits::eTransferSrc;
+
+    if (aspect & vk::ImageAspectFlagBits::eDepth) {
+        return usage | vk::ImageUsageFlagBits::eDepthStencilAttachment;
+    } else {
+        return usage | vk::ImageUsageFlagBits::eStorage |
+                vk::ImageUsageFlagBits::eColorAttachment;
+    }
+}
+
+/// Returns a bit mask with the required features of a format with a particular aspect
+constexpr vk::FormatFeatureFlags GetFormatFeatures(vk::ImageAspectFlags aspect) {
+    auto usage = vk::FormatFeatureFlagBits::eSampledImage |
+            vk::FormatFeatureFlagBits::eTransferDst |
+            vk::FormatFeatureFlagBits::eTransferSrc |
+            vk::FormatFeatureFlagBits::eBlitSrc |
+            vk::FormatFeatureFlagBits::eBlitDst;
+
+    if (aspect & vk::ImageAspectFlagBits::eDepth) {
+        return usage | vk::FormatFeatureFlagBits::eDepthStencilAttachment;
+    } else {
+        return usage | vk::FormatFeatureFlagBits::eStorageImage |
+                vk::FormatFeatureFlagBits::eColorAttachment;
+    }
+}
+
+} // namespace Vulkan

src/video_core/renderer_vulkan/vk_instance.cpp

@@ -0,0 +1,268 @@
+// Copyright 2022 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#define VULKAN_HPP_NO_CONSTRUCTORS
+#include <span>
+#include "common/assert.h"
+#include "core/frontend/emu_window.h"
+#include "video_core/renderer_vulkan/vk_platform.h"
+#include "video_core/renderer_vulkan/vk_instance.h"
+
+namespace Vulkan {
+
+Instance::Instance(Frontend::EmuWindow& window) {
+    auto window_info = window.GetWindowInfo();
+
+    // Fetch instance independant function pointers
+    vk::DynamicLoader dl;
+    auto vkGetInstanceProcAddr = dl.getProcAddress<PFN_vkGetInstanceProcAddr>("vkGetInstanceProcAddr");
+    VULKAN_HPP_DEFAULT_DISPATCHER.init(vkGetInstanceProcAddr);
+
+    // Enable the instance extensions the backend uses
+    auto extensions = GetInstanceExtensions(window_info.type, true);
+
+    // We require a Vulkan 1.1 driver
+    const u32 available_version = vk::enumerateInstanceVersion();
+    if (available_version < VK_API_VERSION_1_1) {
+        LOG_CRITICAL(Render_Vulkan, "Vulkan 1.0 is not supported, 1.1 is required!");
+    }
+
+    const vk::ApplicationInfo application_info = {
+        .pApplicationName = "Citra",
+        .applicationVersion = VK_MAKE_VERSION(1, 0, 0),
+        .pEngineName = "Citra Vulkan",
+        .engineVersion = VK_MAKE_VERSION(1, 0, 0),
+        .apiVersion = available_version
+    };
+
+    const std::array layers = {"VK_LAYER_KHRONOS_validation"};
+    const vk::InstanceCreateInfo instance_info = {
+        .pApplicationInfo = &application_info,
+        .enabledLayerCount = static_cast<u32>(layers.size()),
+        .ppEnabledLayerNames = layers.data(),
+        .enabledExtensionCount = static_cast<u32>(extensions.size()),
+        .ppEnabledExtensionNames = extensions.data()
+    };
+
+    instance = vk::createInstance(instance_info);
+    surface = CreateSurface(instance, window);
+
+    // TODO: GPU select dialog
+    auto physical_devices = instance.enumeratePhysicalDevices();
+    physical_device = physical_devices[1];
+    device_properties = physical_device.getProperties();
+
+    CreateDevice();
+}
+
+Instance::~Instance() {
+    device.waitIdle();
+    vmaDestroyAllocator(allocator);
+    device.destroy();
+    instance.destroySurfaceKHR(surface);
+    instance.destroy();
+}
+
+bool Instance::IsFormatSupported(vk::Format format, vk::FormatFeatureFlags usage) const {
+    static std::unordered_map<vk::Format, vk::FormatProperties> supported;
+    if (auto it = supported.find(format); it != supported.end()) {
+        return (it->second.optimalTilingFeatures & usage) == usage;
+    }
+
+    // Cache format properties so we don't have to query the driver all the time
+    const vk::FormatProperties properties = physical_device.getFormatProperties(format);
+    supported.insert(std::make_pair(format, properties));
+
+    return (properties.optimalTilingFeatures & usage) == usage;
+}
+
+vk::Format Instance::GetFormatAlternative(vk::Format format) const {
+    if (format == vk::Format::eUndefined) {
+        return format;
+    }
+
+    vk::FormatFeatureFlags features = GetFormatFeatures(GetImageAspect(format));
+    if (IsFormatSupported(format, features)) {
+       return format;
+    }
+
+    // Return the most supported alternative format preferably with the
+    // same block size according to the Vulkan spec.
+    // See 43.3. Required Format Support of the Vulkan spec
+    switch (format) {
+    case vk::Format::eD24UnormS8Uint:
+        return vk::Format::eD32SfloatS8Uint;
+    case vk::Format::eX8D24UnormPack32:
+        return vk::Format::eD32Sfloat;
+    case vk::Format::eR5G5B5A1UnormPack16:
+        return vk::Format::eA1R5G5B5UnormPack16;
+    case vk::Format::eR8G8B8Unorm:
+        return vk::Format::eR8G8B8A8Unorm;
+    case vk::Format::eUndefined:
+        return vk::Format::eUndefined;
+    case vk::Format::eR4G4B4A4UnormPack16:
+        // B4G4R4A4 is not guaranteed by the spec to support attachments
+        return GetFormatAlternative(vk::Format::eB4G4R4A4UnormPack16);
+    default:
+        LOG_WARNING(Render_Vulkan, "Format {} doesn't support attachments, falling back to RGBA8",
+                                    vk::to_string(format));
+        return vk::Format::eR8G8B8A8Unorm;
+    }
+}
+
+bool Instance::CreateDevice() {
+    auto feature_chain = physical_device.getFeatures2<vk::PhysicalDeviceFeatures2,
+                                                      vk::PhysicalDeviceExtendedDynamicStateFeaturesEXT,
+                                                      vk::PhysicalDeviceTimelineSemaphoreFeaturesKHR>();
+
+    // Not having geometry shaders will cause issues with accelerated rendering.
+    const vk::PhysicalDeviceFeatures available = feature_chain.get().features;
+    if (!available.geometryShader) {
+        LOG_WARNING(Render_Vulkan, "Geometry shaders not availabe! Accelerated rendering not possible!");
+    }
+
+    auto extension_list = physical_device.enumerateDeviceExtensionProperties();
+    if (extension_list.empty()) {
+        LOG_CRITICAL(Render_Vulkan, "No extensions supported by device.");
+        return false;
+    }
+
+    // Helper lambda for adding extensions
+    std::array<const char*, 6> enabled_extensions;
+    u32 enabled_extension_count = 0;
+
+    auto AddExtension = [&](std::string_view name) -> bool {
+        auto result = std::find_if(extension_list.begin(), extension_list.end(), [&](const auto& prop) {
+            return name.compare(prop.extensionName.data());
+        });
+
+        if (result != extension_list.end()) {
+            LOG_INFO(Render_Vulkan, "Enabling extension: {}", name);
+            enabled_extensions[enabled_extension_count++] = name.data();
+            return true;
+        }
+
+        LOG_WARNING(Render_Vulkan, "Extension {} unavailable.", name);
+        return false;
+    };
+
+    AddExtension(VK_KHR_SWAPCHAIN_EXTENSION_NAME);
+    AddExtension(VK_EXT_DEPTH_CLIP_CONTROL_EXTENSION_NAME);
+    timeline_semaphores = AddExtension(VK_KHR_TIMELINE_SEMAPHORE_EXTENSION_NAME);
+    extended_dynamic_state = AddExtension(VK_EXT_EXTENDED_DYNAMIC_STATE_EXTENSION_NAME);
+    push_descriptors = AddExtension(VK_KHR_PUSH_DESCRIPTOR_EXTENSION_NAME);
+
+    // Search queue families for graphics and present queues
+    auto family_properties = physical_device.getQueueFamilyProperties();
+    if (family_properties.empty()) {
+        LOG_CRITICAL(Render_Vulkan, "Vulkan physical device reported no queues.");
+        return false;
+    }
+
+    bool graphics_queue_found = false;
+    bool present_queue_found = false;
+    for (std::size_t i = 0; i < family_properties.size(); i++) {
+        // Check if queue supports graphics
+        const u32 index = static_cast<u32>(i);
+        if (family_properties[i].queueFlags & vk::QueueFlagBits::eGraphics) {
+            graphics_queue_family_index = index;
+            graphics_queue_found = true;
+
+            // If this queue also supports presentation we are finished
+            if (physical_device.getSurfaceSupportKHR(static_cast<u32>(i), surface)) {
+                present_queue_family_index = index;
+                present_queue_found = true;
+                break;
+            }
+        }
+
+        // Check if queue supports presentation
+        if (physical_device.getSurfaceSupportKHR(index, surface)) {
+            present_queue_family_index = index;
+            present_queue_found = true;
+        }
+    }
+
+    if (!graphics_queue_found || !present_queue_found) {
+        LOG_CRITICAL(Render_Vulkan, "Unable to find graphics and/or present queues.");
+        return false;
+    }
+
+    static constexpr float queue_priorities[] = {1.0f};
+
+    const std::array queue_infos = {
+        vk::DeviceQueueCreateInfo{
+            .queueFamilyIndex = graphics_queue_family_index,
+            .queueCount = 1,
+            .pQueuePriorities = queue_priorities
+        },
+        vk::DeviceQueueCreateInfo{
+            .queueFamilyIndex = present_queue_family_index,
+            .queueCount = 1,
+            .pQueuePriorities = queue_priorities
+        }
+    };
+
+    const u32 queue_count = graphics_queue_family_index != present_queue_family_index ? 2u : 1u;
+    const vk::StructureChain device_chain = {
+        vk::DeviceCreateInfo{
+            .queueCreateInfoCount = queue_count,
+            .pQueueCreateInfos = queue_infos.data(),
+            .enabledExtensionCount = enabled_extension_count,
+            .ppEnabledExtensionNames = enabled_extensions.data(),
+        },
+        vk::PhysicalDeviceFeatures2{
+            .features = {
+                .robustBufferAccess = available.robustBufferAccess,
+                .geometryShader = available.geometryShader,
+                .dualSrcBlend = available.dualSrcBlend,
+                .logicOp = available.logicOp,
+                .depthClamp = available.depthClamp,
+                .largePoints = available.largePoints,
+                .samplerAnisotropy = available.samplerAnisotropy,
+                .fragmentStoresAndAtomics = available.fragmentStoresAndAtomics,
+                .shaderStorageImageMultisample = available.shaderStorageImageMultisample,
+                .shaderClipDistance = available.shaderClipDistance
+            }
+        },
+        vk::PhysicalDeviceDepthClipControlFeaturesEXT{
+            .depthClipControl = true
+        },
+        feature_chain.get<vk::PhysicalDeviceExtendedDynamicStateFeaturesEXT>(),
+        feature_chain.get<vk::PhysicalDeviceTimelineSemaphoreFeaturesKHR>()
+    };
+
+    // Create logical device
+    device = physical_device.createDevice(device_chain.get());
+    VULKAN_HPP_DEFAULT_DISPATCHER.init(device);
+
+    // Grab the graphics and present queues.
+    graphics_queue = device.getQueue(graphics_queue_family_index, 0);
+    present_queue = device.getQueue(present_queue_family_index, 0);
+
+    CreateAllocator();
+    return true;
+}
+
+void Instance::CreateAllocator() {
+    const VmaVulkanFunctions functions = {
+        .vkGetInstanceProcAddr = VULKAN_HPP_DEFAULT_DISPATCHER.vkGetInstanceProcAddr,
+        .vkGetDeviceProcAddr = VULKAN_HPP_DEFAULT_DISPATCHER.vkGetDeviceProcAddr
+    };
+
+    const VmaAllocatorCreateInfo allocator_info = {
+        .physicalDevice = physical_device,
+        .device = device,
+        .pVulkanFunctions = &functions,
+        .instance = instance,
+        .vulkanApiVersion = VK_API_VERSION_1_1
+    };
+
+    if (VkResult result = vmaCreateAllocator(&allocator_info, &allocator); result != VK_SUCCESS) {
+        LOG_CRITICAL(Render_Vulkan, "Failed to initialize VMA with error {}", result);
+        UNREACHABLE();
+    }
+}
+
+} // namespace Vulkan

src/video_core/renderer_vulkan/vk_instance.h

@@ -0,0 +1,129 @@
+// Copyright 2022 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <memory>
+#include "common/common_types.h"
+#include "video_core/renderer_vulkan/vk_common.h"
+
+namespace Frontend {
+class EmuWindow;
+}
+
+namespace Vulkan {
+
+/// The global Vulkan instance
+class Instance {
+public:
+    Instance(Frontend::EmuWindow& window);
+    ~Instance();
+
+    /// Returns true when the format supports the provided feature flags
+    bool IsFormatSupported(vk::Format format, vk::FormatFeatureFlags usage) const;
+
+    /// Returns the most compatible format that supports the provided feature flags
+    vk::Format GetFormatAlternative(vk::Format format) const;
+
+    /// Returns the Vulkan instance
+    vk::Instance GetInstance() const {
+        return instance;
+    }
+
+    /// Returns the Vulkan surface
+    vk::SurfaceKHR GetSurface() const {
+        return surface;
+    }
+
+    /// Returns the current physical device
+    vk::PhysicalDevice GetPhysicalDevice() const {
+        return physical_device;
+    }
+
+    /// Returns the Vulkan device
+    vk::Device GetDevice() const {
+        return device;
+    }
+
+    VmaAllocator GetAllocator() const {
+        return allocator;
+    }
+
+    /// Retrieve queue information
+    u32 GetGraphicsQueueFamilyIndex() const {
+        return graphics_queue_family_index;
+    }
+
+    u32 GetPresentQueueFamilyIndex() const {
+        return present_queue_family_index;
+    }
+
+    vk::Queue GetGraphicsQueue() const {
+        return graphics_queue;
+    }
+
+    vk::Queue GetPresentQueue() const {
+        return present_queue;
+    }
+
+    /// Returns true when VK_KHR_timeline_semaphore is supported
+    bool IsTimelineSemaphoreSupported() const {
+        return timeline_semaphores;
+    }
+
+    /// Returns true when VK_EXT_extended_dynamic_state is supported
+    bool IsExtendedDynamicStateSupported() const {
+        return extended_dynamic_state;
+    }
+
+    /// Returns true when VK_KHR_push_descriptors is supported
+    bool IsPushDescriptorsSupported() const {
+        return push_descriptors;
+    }
+
+    /// Returns the vendor ID of the physical device
+    u32 GetVendorID() const {
+        return device_properties.vendorID;
+    }
+
+    /// Returns the device ID of the physical device
+    u32 GetDeviceID() const {
+        return device_properties.deviceID;
+    }
+
+    /// Returns the pipeline cache unique identifier
+    const auto GetPipelineCacheUUID() const {
+        return device_properties.pipelineCacheUUID;
+    }
+
+    /// Returns the minimum required alignment for uniforms
+    vk::DeviceSize UniformMinAlignment() const {
+        return device_properties.limits.minUniformBufferOffsetAlignment;
+    }
+
+private:
+    /// Creates the logical device opportunistically enabling extensions
+    bool CreateDevice();
+
+    /// Creates the VMA allocator handle
+    void CreateAllocator();
+
+private:
+    vk::Device device;
+    vk::PhysicalDevice physical_device;
+    vk::Instance instance;
+    vk::SurfaceKHR surface;
+    vk::PhysicalDeviceProperties device_properties;
+    VmaAllocator allocator;
+    vk::Queue present_queue;
+    vk::Queue graphics_queue;
+    u32 present_queue_family_index = 0;
+    u32 graphics_queue_family_index = 0;
+
+    bool timeline_semaphores = false;
+    bool extended_dynamic_state = false;
+    bool push_descriptors = false;
+};
+
+} // namespace Vulkan

src/video_core/renderer_vulkan/vk_pipeline_cache.cpp

@@ -0,0 +1,714 @@
+// Copyright 2022 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#define VULKAN_HPP_NO_CONSTRUCTORS
+#include <filesystem>
+#include "common/common_paths.h"
+#include "common/file_util.h"
+#include "common/logging/log.h"
+#include "video_core/renderer_vulkan/pica_to_vk.h"
+#include "video_core/renderer_vulkan/vk_pipeline_cache.h"
+#include "video_core/renderer_vulkan/vk_instance.h"
+#include "video_core/renderer_vulkan/vk_renderpass_cache.h"
+#include "video_core/renderer_vulkan/vk_task_scheduler.h"
+
+namespace Vulkan {
+
+struct Bindings {
+    std::array<vk::DescriptorType, MAX_DESCRIPTORS> bindings;
+    u32 binding_count;
+};
+
+constexpr u32 RASTERIZER_SET_COUNT = 4;
+constexpr static std::array RASTERIZER_SETS = {
+    Bindings{
+        // Utility set
+        .bindings = {
+            vk::DescriptorType::eUniformBuffer,
+            vk::DescriptorType::eUniformBuffer,
+            vk::DescriptorType::eUniformTexelBuffer,
+            vk::DescriptorType::eUniformTexelBuffer,
+            vk::DescriptorType::eUniformTexelBuffer
+        },
+        .binding_count = 5
+    },
+    Bindings{
+        // Texture set
+        .bindings = {
+            vk::DescriptorType::eSampledImage,
+            vk::DescriptorType::eSampledImage,
+            vk::DescriptorType::eSampledImage,
+            vk::DescriptorType::eSampledImage
+        },
+        .binding_count = 4
+    },
+    Bindings{
+        // Sampler set
+        .bindings = {
+            vk::DescriptorType::eSampler,
+            vk::DescriptorType::eSampler,
+            vk::DescriptorType::eSampler,
+            vk::DescriptorType::eSampler
+        },
+        .binding_count = 4
+    },
+    Bindings {
+        // Shadow set
+        .bindings = {
+            vk::DescriptorType::eStorageImage,
+            vk::DescriptorType::eStorageImage,
+            vk::DescriptorType::eStorageImage,
+            vk::DescriptorType::eStorageImage,
+            vk::DescriptorType::eStorageImage,
+            vk::DescriptorType::eStorageImage,
+            vk::DescriptorType::eStorageImage
+        },
+        .binding_count = 7
+    }
+};
+
+constexpr vk::ShaderStageFlags ToVkStageFlags(vk::DescriptorType type) {
+    vk::ShaderStageFlags flags;
+    switch (type) {
+    case vk::DescriptorType::eSampler:
+    case vk::DescriptorType::eSampledImage:
+    case vk::DescriptorType::eUniformTexelBuffer:
+    case vk::DescriptorType::eStorageImage:
+        flags = vk::ShaderStageFlagBits::eFragment;
+        break;
+    case vk::DescriptorType::eUniformBuffer:
+    case vk::DescriptorType::eUniformBufferDynamic:
+        flags = vk::ShaderStageFlagBits::eFragment |
+                vk::ShaderStageFlagBits::eVertex |
+                vk::ShaderStageFlagBits::eGeometry |
+                vk::ShaderStageFlagBits::eCompute;
+        break;
+    default:
+        LOG_ERROR(Render_Vulkan, "Unknown descriptor type!");
+    }
+
+    return flags;
+}
+
+u32 AttribBytes(VertexAttribute attrib) {
+    switch (attrib.type) {
+    case AttribType::Float:
+        return sizeof(float) * attrib.size;
+    case AttribType::Int:
+        return sizeof(u32) * attrib.size;
+    case AttribType::Short:
+        return sizeof(u16) * attrib.size;
+    case AttribType::Byte:
+    case AttribType::Ubyte:
+        return sizeof(u8) * attrib.size;
+    }
+}
+
+vk::Format ToVkAttributeFormat(VertexAttribute attrib) {
+    switch (attrib.type) {
+    case AttribType::Float:
+        switch (attrib.size) {
+        case 1: return vk::Format::eR32Sfloat;
+        case 2: return vk::Format::eR32G32Sfloat;
+        case 3: return vk::Format::eR32G32B32Sfloat;
+        case 4: return vk::Format::eR32G32B32A32Sfloat;
+        }
+    default:
+        LOG_CRITICAL(Render_Vulkan, "Unimplemented vertex attribute format!");
+        UNREACHABLE();
+    }
+
+    return vk::Format::eR32Sfloat;
+}
+
+vk::ShaderStageFlagBits ToVkShaderStage(std::size_t index) {
+    switch (index) {
+    case 0: return vk::ShaderStageFlagBits::eVertex;
+    case 1: return vk::ShaderStageFlagBits::eFragment;
+    case 2: return vk::ShaderStageFlagBits::eGeometry;
+    default:
+        LOG_CRITICAL(Render_Vulkan, "Invalid shader stage index!");
+        UNREACHABLE();
+    }
+
+    return vk::ShaderStageFlagBits::eVertex;
+}
+
+PipelineCache::PipelineCache(const Instance& instance, TaskScheduler& scheduler, RenderpassCache& renderpass_cache)
+    : instance{instance}, scheduler{scheduler}, renderpass_cache{renderpass_cache} {
+    descriptor_dirty.fill(true);
+
+    LoadDiskCache();
+    BuildLayout();
+    trivial_vertex_shader = Compile(GenerateTrivialVertexShader(), vk::ShaderStageFlagBits::eVertex,
+                                    instance.GetDevice(), ShaderOptimization::Debug);
+}
+
+PipelineCache::~PipelineCache() {
+    vk::Device device = instance.GetDevice();
+
+    SaveDiskCache();
+
+    device.destroyPipelineLayout(layout);
+    device.destroyPipelineCache(pipeline_cache);
+    device.destroyShaderModule(trivial_vertex_shader);
+    for (std::size_t i = 0; i < MAX_DESCRIPTOR_SETS; i++) {
+        device.destroyDescriptorSetLayout(descriptor_set_layouts[i]);
+        device.destroyDescriptorUpdateTemplate(update_templates[i]);
+    }
+
+    for (auto& [key, module] : programmable_vertex_shaders.shader_cache) {
+        device.destroyShaderModule(module);
+    }
+
+    for (auto& [key, module] : fixed_geometry_shaders.shaders) {
+        device.destroyShaderModule(module);
+    }
+
+    for (auto& [key, module] : fragment_shaders.shaders) {
+        device.destroyShaderModule(module);
+    }
+
+    for (const auto& [hash, pipeline] : graphics_pipelines) {
+        device.destroyPipeline(pipeline);
+    }
+
+    graphics_pipelines.clear();
+}
+
+void PipelineCache::BindPipeline(const PipelineInfo& info) {
+    ApplyDynamic(info);
+
+    // When texture downloads occur the runtime will flush the GPU and cause
+    // a scheduler slot switch behind our back. This might invalidate any
+    // cached descriptor sets/require pipeline rebinding.
+    if (timestamp != scheduler.GetHostFenceCounter()) {
+        MarkDirty();
+    }
+
+    u64 shader_hash = 0;
+    for (u32 i = 0; i < MAX_SHADER_STAGES; i++) {
+        shader_hash = Common::HashCombine(shader_hash, shader_hashes[i]);
+    }
+
+    const u64 info_hash_size = instance.IsExtendedDynamicStateSupported() ?
+            offsetof(PipelineInfo, rasterization) :
+            offsetof(PipelineInfo, depth_stencil) + offsetof(DepthStencilState, stencil_reference);
+
+    u64 info_hash = Common::ComputeHash64(&info, info_hash_size);
+    u64 pipeline_hash = Common::HashCombine(shader_hash, info_hash);
+
+    auto [it, new_pipeline] = graphics_pipelines.try_emplace(pipeline_hash, vk::Pipeline{});
+    if (new_pipeline) {
+        it->second = BuildPipeline(info);
+    }
+
+    if (it->second != current_pipeline) {
+        vk::CommandBuffer command_buffer = scheduler.GetRenderCommandBuffer();
+        command_buffer.bindPipeline(vk::PipelineBindPoint::eGraphics, it->second);
+        current_pipeline = it->second;
+    }
+
+    BindDescriptorSets();
+}
+
+bool PipelineCache::UseProgrammableVertexShader(const Pica::Regs& regs, Pica::Shader::ShaderSetup& setup) {
+    const PicaVSConfig config{regs.vs, setup};
+    auto [handle, result] = programmable_vertex_shaders.Get(config, setup, vk::ShaderStageFlagBits::eVertex,
+                                                            instance.GetDevice(), ShaderOptimization::Debug);
+    if (!handle) {
+        return false;
+    }
+
+    current_shaders[ProgramType::VS] = handle;
+    shader_hashes[ProgramType::VS] = config.Hash();
+    return true;
+}
+
+void PipelineCache::UseTrivialVertexShader() {
+    current_shaders[ProgramType::VS] = trivial_vertex_shader;
+    shader_hashes[ProgramType::VS] = 0;
+}
+
+void PipelineCache::UseFixedGeometryShader(const Pica::Regs& regs) {
+    const PicaFixedGSConfig gs_config{regs};
+    auto [handle, _] = fixed_geometry_shaders.Get(gs_config, vk::ShaderStageFlagBits::eGeometry,
+                                                  instance.GetDevice(), ShaderOptimization::Debug);
+    current_shaders[ProgramType::GS] = handle;
+    shader_hashes[ProgramType::GS] = gs_config.Hash();
+}
+
+void PipelineCache::UseTrivialGeometryShader() {
+    current_shaders[ProgramType::GS] = VK_NULL_HANDLE;
+    shader_hashes[ProgramType::GS] = 0;
+}
+
+void PipelineCache::UseFragmentShader(const Pica::Regs& regs) {
+    const PicaFSConfig config = PicaFSConfig::BuildFromRegs(regs);
+    auto [handle, result] = fragment_shaders.Get(config, vk::ShaderStageFlagBits::eFragment,
+                                                 instance.GetDevice(), ShaderOptimization::Debug);
+    current_shaders[ProgramType::FS] = handle;
+    shader_hashes[ProgramType::FS] = config.Hash();
+}
+
+void PipelineCache::BindTexture(u32 binding, vk::ImageView image_view) {
+    const vk::DescriptorImageInfo image_info = {
+        .imageView = image_view,
+        .imageLayout = vk::ImageLayout::eShaderReadOnlyOptimal
+    };
+
+    SetBinding(1, binding, DescriptorData{image_info});
+}
+
+void PipelineCache::BindStorageImage(u32 binding, vk::ImageView image_view) {
+    const vk::DescriptorImageInfo image_info = {
+        .imageView = image_view,
+        .imageLayout = vk::ImageLayout::eGeneral
+    };
+
+    SetBinding(3, binding, DescriptorData{image_info});
+}
+
+void PipelineCache::BindBuffer(u32 binding, vk::Buffer buffer, u32 offset, u32 size) {
+    const DescriptorData data = {
+        .buffer_info = vk::DescriptorBufferInfo{
+            .buffer = buffer,
+            .offset = offset,
+            .range = size
+        }
+    };
+
+    SetBinding(0, binding, data);
+}
+
+void PipelineCache::BindTexelBuffer(u32 binding, vk::BufferView buffer_view) {
+    const DescriptorData data = {
+        .buffer_view = buffer_view
+    };
+
+    SetBinding(0, binding, data);
+}
+
+void PipelineCache::BindSampler(u32 binding, vk::Sampler sampler) {
+    const DescriptorData data = {
+        .image_info = vk::DescriptorImageInfo{
+            .sampler = sampler
+        }
+    };
+
+    SetBinding(2, binding, data);
+}
+
+void PipelineCache::SetViewport(float x, float y, float width, float height) {
+    vk::CommandBuffer command_buffer = scheduler.GetRenderCommandBuffer();
+    command_buffer.setViewport(0, vk::Viewport{x, y, width, height, 0.f, 1.f});
+}
+
+void PipelineCache::SetScissor(s32 x, s32 y, u32 width, u32 height) {
+    vk::CommandBuffer command_buffer = scheduler.GetRenderCommandBuffer();
+    command_buffer.setScissor(0, vk::Rect2D{{x, y}, {width, height}});
+}
+
+void PipelineCache::MarkDirty() {
+    descriptor_dirty.fill(true);
+    current_pipeline = VK_NULL_HANDLE;
+    timestamp = scheduler.GetHostFenceCounter();
+}
+
+void PipelineCache::ApplyDynamic(const PipelineInfo& info) {
+    if (instance.IsExtendedDynamicStateSupported()) {
+        vk::CommandBuffer command_buffer = scheduler.GetRenderCommandBuffer();
+        command_buffer.setPrimitiveTopologyEXT(PicaToVK::PrimitiveTopology(info.rasterization.topology));
+    }
+}
+
+void PipelineCache::SetBinding(u32 set, u32 binding, DescriptorData data) {
+    if (update_data[set][binding] != data) {
+        update_data[set][binding] = data;
+        descriptor_dirty[set] = true;
+    }
+}
+
+void PipelineCache::BuildLayout() {
+    std::array<vk::DescriptorSetLayoutBinding, MAX_DESCRIPTORS> set_bindings;
+    std::array<vk::DescriptorUpdateTemplateEntry, MAX_DESCRIPTORS> update_entries;
+
+    vk::Device device = instance.GetDevice();
+    for (u32 i = 0; i < RASTERIZER_SET_COUNT; i++) {
+        const auto& set = RASTERIZER_SETS[i];
+        for (u32 j = 0; j < set.binding_count; j++) {
+            vk::DescriptorType type = set.bindings[j];
+            set_bindings[j] = vk::DescriptorSetLayoutBinding{
+                .binding = j,
+                .descriptorType = type,
+                .descriptorCount = 1,
+                .stageFlags = ToVkStageFlags(type)
+            };
+
+            update_entries[j] = vk::DescriptorUpdateTemplateEntry{
+                .dstBinding = j,
+                .dstArrayElement = 0,
+                .descriptorCount = 1,
+                .descriptorType  = type,
+                .offset = j * sizeof(DescriptorData),
+                .stride = 0
+            };
+        }
+
+        const vk::DescriptorSetLayoutCreateInfo layout_info = {
+            .bindingCount = set.binding_count,
+            .pBindings = set_bindings.data()
+        };
+
+        // Create descriptor set layout
+        descriptor_set_layouts[i] = device.createDescriptorSetLayout(layout_info);
+
+        const vk::DescriptorUpdateTemplateCreateInfo template_info = {
+            .descriptorUpdateEntryCount = set.binding_count,
+            .pDescriptorUpdateEntries = update_entries.data(),
+            .templateType = vk::DescriptorUpdateTemplateType::eDescriptorSet,
+            .descriptorSetLayout = descriptor_set_layouts[i]
+        };
+
+        // Create descriptor set update template
+        update_templates[i] = device.createDescriptorUpdateTemplate(template_info);
+    }
+
+    const vk::PipelineLayoutCreateInfo layout_info = {
+        .setLayoutCount = RASTERIZER_SET_COUNT,
+        .pSetLayouts = descriptor_set_layouts.data(),
+        .pushConstantRangeCount = 0,
+        .pPushConstantRanges = nullptr
+    };
+
+    layout = device.createPipelineLayout(layout_info);
+}
+
+vk::Pipeline PipelineCache::BuildPipeline(const PipelineInfo& info) {
+    vk::Device device = instance.GetDevice();
+
+    u32 shader_count = 0;
+    std::array<vk::PipelineShaderStageCreateInfo, MAX_SHADER_STAGES> shader_stages;
+    for (std::size_t i = 0; i < current_shaders.size(); i++) {
+        vk::ShaderModule shader = current_shaders[i];
+        if (!shader) {
+            continue;
+        }
+
+        shader_stages[shader_count++] = vk::PipelineShaderStageCreateInfo{
+            .stage = ToVkShaderStage(i),
+            .module = shader,
+            .pName = "main"
+        };
+    }
+
+    /**
+     * Vulkan doesn't intuitively support fixed attributes. To avoid duplicating the data and increasing
+     * data upload, when the fixed flag is true, we specify VK_VERTEX_INPUT_RATE_INSTANCE as the input rate.
+     * Since one instance is all we render, the shader will always read the single attribute.
+     */
+    std::array<vk::VertexInputBindingDescription, MAX_VERTEX_BINDINGS> bindings;
+    for (u32 i = 0; i < info.vertex_layout.binding_count; i++) {
+        const auto& binding = info.vertex_layout.bindings[i];
+        bindings[i] = vk::VertexInputBindingDescription{
+            .binding = binding.binding,
+            .stride = binding.stride,
+            .inputRate = binding.fixed.Value() ? vk::VertexInputRate::eInstance
+                                               : vk::VertexInputRate::eVertex
+        };
+    }
+
+    // Populate vertex attribute structures
+    std::array<vk::VertexInputAttributeDescription, MAX_VERTEX_ATTRIBUTES> attributes;
+    for (u32 i = 0; i < info.vertex_layout.attribute_count; i++) {
+        const auto& attr = info.vertex_layout.attributes[i];
+        attributes[i] = vk::VertexInputAttributeDescription{
+            .location = attr.location,
+            .binding = attr.binding,
+            .format = ToVkAttributeFormat(attr),
+            .offset = attr.offset
+        };
+    }
+
+    const vk::PipelineVertexInputStateCreateInfo vertex_input_info = {
+        .vertexBindingDescriptionCount = info.vertex_layout.binding_count,
+        .pVertexBindingDescriptions = bindings.data(),
+        .vertexAttributeDescriptionCount = info.vertex_layout.attribute_count,
+        .pVertexAttributeDescriptions = attributes.data()
+    };
+
+    const vk::PipelineInputAssemblyStateCreateInfo input_assembly = {
+        .topology = PicaToVK::PrimitiveTopology(info.rasterization.topology),
+        .primitiveRestartEnable = false
+    };
+
+    const vk::PipelineRasterizationStateCreateInfo raster_state = {
+        .depthClampEnable = false,
+        .rasterizerDiscardEnable = false,
+        .cullMode = PicaToVK::CullMode(info.rasterization.cull_mode),
+        .frontFace = PicaToVK::FrontFace(info.rasterization.cull_mode),
+        .depthBiasEnable = false,
+        .lineWidth = 1.0f
+    };
+
+    const vk::PipelineMultisampleStateCreateInfo multisampling = {
+        .rasterizationSamples  = vk::SampleCountFlagBits::e1,
+        .sampleShadingEnable = false
+    };
+
+    const vk::PipelineColorBlendAttachmentState colorblend_attachment = {
+        .blendEnable = info.blending.blend_enable.Value(),
+        .srcColorBlendFactor = PicaToVK::BlendFunc(info.blending.src_color_blend_factor),
+        .dstColorBlendFactor = PicaToVK::BlendFunc(info.blending.dst_color_blend_factor),
+        .colorBlendOp = PicaToVK::BlendEquation(info.blending.color_blend_eq),
+        .srcAlphaBlendFactor = PicaToVK::BlendFunc(info.blending.src_alpha_blend_factor),
+        .dstAlphaBlendFactor = PicaToVK::BlendFunc(info.blending.dst_alpha_blend_factor),
+        .alphaBlendOp = PicaToVK::BlendEquation(info.blending.alpha_blend_eq),
+        .colorWriteMask = vk::ColorComponentFlagBits::eR | vk::ColorComponentFlagBits::eG |
+                          vk::ColorComponentFlagBits::eB | vk::ColorComponentFlagBits::eA
+    };
+
+    const vk::PipelineColorBlendStateCreateInfo color_blending = {
+        .logicOpEnable = info.blending.logic_op_enable.Value(),
+        .logicOp = PicaToVK::LogicOp(info.blending.logic_op),
+        .attachmentCount = 1,
+        .pAttachments = &colorblend_attachment,
+        .blendConstants = std::array{1.0f, 1.0f, 1.0f, 1.0f}
+    };
+
+    const vk::Viewport viewport = {
+        .x = 0.0f,
+        .y = 0.0f,
+        .width = 1.0f,
+        .height = 1.0f,
+        .minDepth = 0.0f,
+        .maxDepth = 1.0f
+    };
+
+    const vk::Rect2D scissor = {
+        .offset = {0, 0},
+        .extent = {1, 1}
+    };
+
+    vk::PipelineViewportDepthClipControlCreateInfoEXT depth_clip_control = {
+        .negativeOneToOne = true
+    };
+
+    const vk::PipelineViewportStateCreateInfo viewport_info = {
+        .pNext = &depth_clip_control,
+        .viewportCount = 1,
+        .pViewports = &viewport,
+        .scissorCount = 1,
+        .pScissors = &scissor,
+    };
+
+    const bool extended_dynamic_states = instance.IsExtendedDynamicStateSupported();
+    const std::array dynamic_states = {
+        vk::DynamicState::eViewport,
+        vk::DynamicState::eScissor,
+        vk::DynamicState::eStencilCompareMask,
+        vk::DynamicState::eStencilWriteMask,
+        vk::DynamicState::eStencilReference,
+        vk::DynamicState::eBlendConstants,
+        // VK_EXT_extended_dynamic_state
+        vk::DynamicState::eCullModeEXT,
+        vk::DynamicState::eDepthCompareOpEXT,
+        vk::DynamicState::eDepthTestEnableEXT,
+        vk::DynamicState::eDepthWriteEnableEXT,
+        vk::DynamicState::eFrontFaceEXT,
+        vk::DynamicState::ePrimitiveTopologyEXT,
+        vk::DynamicState::eStencilOpEXT,
+        vk::DynamicState::eStencilTestEnableEXT,
+    };
+
+    const vk::PipelineDynamicStateCreateInfo dynamic_info = {
+        .dynamicStateCount =
+            extended_dynamic_states ? static_cast<u32>(dynamic_states.size()) : 6u,
+        .pDynamicStates = dynamic_states.data()
+    };
+
+    const vk::StencilOpState stencil_op_state = {
+        .failOp = PicaToVK::StencilOp(info.depth_stencil.stencil_fail_op),
+        .passOp = PicaToVK::StencilOp(info.depth_stencil.stencil_pass_op),
+        .depthFailOp = PicaToVK::StencilOp(info.depth_stencil.stencil_depth_fail_op),
+        .compareOp = PicaToVK::CompareFunc(info.depth_stencil.stencil_compare_op)
+    };
+
+    const vk::PipelineDepthStencilStateCreateInfo depth_info = {
+        .depthTestEnable = static_cast<u32>(info.depth_stencil.depth_test_enable.Value()),
+        .depthWriteEnable = static_cast<u32>(info.depth_stencil.depth_write_enable.Value()),
+        .depthCompareOp = PicaToVK::CompareFunc(info.depth_stencil.depth_compare_op),
+        .depthBoundsTestEnable = false,
+        .stencilTestEnable = static_cast<u32>(info.depth_stencil.stencil_test_enable.Value()),
+        .front = stencil_op_state,
+        .back = stencil_op_state
+    };
+
+    const vk::GraphicsPipelineCreateInfo pipeline_info = {
+        .stageCount = shader_count,
+        .pStages = shader_stages.data(),
+        .pVertexInputState = &vertex_input_info,
+        .pInputAssemblyState = &input_assembly,
+        .pViewportState = &viewport_info,
+        .pRasterizationState = &raster_state,
+        .pMultisampleState = &multisampling,
+        .pDepthStencilState = &depth_info,
+        .pColorBlendState = &color_blending,
+        .pDynamicState = &dynamic_info,
+        .layout = layout,
+        .renderPass = renderpass_cache.GetRenderpass(info.color_attachment,
+                                                     info.depth_attachment, false)
+    };
+
+    if (const auto result = device.createGraphicsPipeline(pipeline_cache, pipeline_info);
+            result.result == vk::Result::eSuccess) {
+        return result.value;
+    } else {
+       LOG_CRITICAL(Render_Vulkan, "Graphics pipeline creation failed!");
+       UNREACHABLE();
+    }
+
+    return VK_NULL_HANDLE;
+}
+
+static_assert(sizeof(vk::DescriptorBufferInfo) == sizeof(VkDescriptorBufferInfo));
+
+void PipelineCache::BindDescriptorSets() {
+    vk::Device device = instance.GetDevice();
+    for (u32 i = 0; i < RASTERIZER_SET_COUNT; i++) {
+        if (descriptor_dirty[i] || !descriptor_sets[i]) {
+            const vk::DescriptorSetAllocateInfo alloc_info = {
+                .descriptorPool = scheduler.GetDescriptorPool(),
+                .descriptorSetCount = 1,
+                .pSetLayouts = &descriptor_set_layouts[i]
+            };
+
+            vk::DescriptorSet set = device.allocateDescriptorSets(alloc_info)[0];
+            device.updateDescriptorSetWithTemplate(set, update_templates[i], update_data[i][0]);
+
+            descriptor_sets[i] = set;
+            descriptor_dirty[i] = false;
+        }
+    }
+
+    // Bind the descriptor sets
+    vk::CommandBuffer command_buffer = scheduler.GetRenderCommandBuffer();
+    command_buffer.bindDescriptorSets(vk::PipelineBindPoint::eGraphics, layout, 0, RASTERIZER_SET_COUNT,
+                                      descriptor_sets.data(), 0, nullptr);
+}
+
+void PipelineCache::LoadDiskCache() {
+    if (!EnsureDirectories()) {
+        return;
+    }
+
+    const std::string cache_file_path = GetPipelineCacheDir() + DIR_SEP "pipelines.bin";
+    vk::PipelineCacheCreateInfo cache_info = {
+        .initialDataSize = 0,
+        .pInitialData = nullptr
+    };
+
+    FileUtil::IOFile cache_file{cache_file_path, "r"};
+    if (cache_file.IsOpen()) {
+        LOG_INFO(Render_Vulkan, "Loading pipeline cache");
+
+        const u32 cache_file_size = cache_file.GetSize();
+        auto cache_data = std::vector<u8>(cache_file_size);
+        if (cache_file.ReadBytes(cache_data.data(), cache_file_size)) {
+            if (!IsCacheValid(cache_data.data(), cache_file_size)) {
+                LOG_WARNING(Render_Vulkan, "Pipeline cache provided invalid");
+            } else {
+                cache_info.initialDataSize = cache_file_size;
+                cache_info.pInitialData = cache_data.data();
+            }
+        }
+
+        cache_file.Close();
+    }
+
+    vk::Device device = instance.GetDevice();
+    pipeline_cache = device.createPipelineCache(cache_info);
+}
+
+void PipelineCache::SaveDiskCache() {
+    if (!EnsureDirectories()) {
+        return;
+    }
+
+    const std::string cache_file_path = GetPipelineCacheDir() + DIR_SEP "pipelines.bin";
+    FileUtil::IOFile cache_file{cache_file_path, "wb"};
+    if (!cache_file.IsOpen()) {
+        LOG_INFO(Render_Vulkan, "Unable to open pipeline cache for writing");
+        return;
+    }
+
+    vk::Device device = instance.GetDevice();
+    auto cache_data = device.getPipelineCacheData(pipeline_cache);
+    if (!cache_file.WriteBytes(cache_data.data(), cache_data.size())) {
+        LOG_WARNING(Render_Vulkan, "Error during pipeline cache write");
+        return;
+    }
+
+    cache_file.Close();
+}
+
+bool PipelineCache::IsCacheValid(const u8* data, u32 size) const {
+    if (size < sizeof(vk::PipelineCacheHeaderVersionOne)) {
+        LOG_ERROR(Render_Vulkan, "Pipeline cache failed validation: Invalid header");
+        return false;
+    }
+
+    vk::PipelineCacheHeaderVersionOne header;
+    std::memcpy(&header, data, sizeof(header));
+    if (header.headerSize < sizeof(header)) {
+        LOG_ERROR(Render_Vulkan, "Pipeline cache failed validation: Invalid header length");
+        return false;
+    }
+
+    if (header.headerVersion != vk::PipelineCacheHeaderVersion::eOne) {
+        LOG_ERROR(Render_Vulkan, "Pipeline cache failed validation: Invalid header version");
+        return false;
+    }
+
+    if (u32 vendor_id = instance.GetVendorID(); header.vendorID != vendor_id) {
+        LOG_ERROR(Render_Vulkan,
+                  "Pipeline cache failed validation: Incorrect vendor ID (file: {:#X}, device: {:#X})",
+                   header.vendorID, vendor_id);
+        return false;
+    }
+
+    if (u32 device_id = instance.GetDeviceID(); header.deviceID != device_id) {
+        LOG_ERROR(Render_Vulkan,
+                  "Pipeline cache failed validation: Incorrect device ID (file: {:#X}, device: {:#X})",
+                  header.deviceID, device_id);
+        return false;
+    }
+
+    if (header.pipelineCacheUUID != instance.GetPipelineCacheUUID()) {
+        LOG_ERROR(Render_Vulkan, "Pipeline cache failed validation: Incorrect UUID");
+        return false;
+    }
+
+    return true;
+}
+
+bool PipelineCache::EnsureDirectories() const {
+    const auto CreateDir = [](const std::string& dir) {
+        if (!FileUtil::CreateDir(dir)) {
+            LOG_ERROR(Render_Vulkan, "Failed to create directory={}", dir);
+            return false;
+        }
+
+        return true;
+    };
+
+    return CreateDir(FileUtil::GetUserPath(FileUtil::UserPath::ShaderDir)) &&
+           CreateDir(GetPipelineCacheDir());
+}
+
+std::string PipelineCache::GetPipelineCacheDir() const {
+    return FileUtil::GetUserPath(FileUtil::UserPath::ShaderDir) + "vulkan";
+}
+
+} // namespace Vulkan

src/video_core/renderer_vulkan/vk_pipeline_cache.h

@@ -0,0 +1,268 @@
+// Copyright 2022 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <array>
+#include "common/bit_field.h"
+#include "common/hash.h"
+#include "video_core/rasterizer_cache/pixel_format.h"
+#include "video_core/renderer_vulkan/vk_common.h"
+#include "video_core/renderer_vulkan/vk_shader.h"
+#include "video_core/renderer_vulkan/vk_shader_gen.h"
+#include "video_core/shader/shader_cache.h"
+#include "video_core/regs.h"
+
+namespace Vulkan {
+
+constexpr u32 MAX_SHADER_STAGES = 3;
+constexpr u32 MAX_VERTEX_ATTRIBUTES = 16;
+constexpr u32 MAX_VERTEX_BINDINGS = 16;
+constexpr u32 MAX_DESCRIPTORS = 8;
+constexpr u32 MAX_DESCRIPTOR_SETS = 6;
+
+enum class AttribType : u32 {
+    Float = 0,
+    Int = 1,
+    Short = 2,
+    Byte = 3,
+    Ubyte = 4
+};
+
+/**
+ * The pipeline state is tightly packed with bitfields to reduce
+ * the overhead of hashing as much as possible
+ */
+union RasterizationState {
+    u8 value = 0;
+    BitField<0, 2, Pica::PipelineRegs::TriangleTopology> topology;
+    BitField<4, 2, Pica::RasterizerRegs::CullMode> cull_mode;
+};
+
+struct DepthStencilState {
+    union {
+        u32 value = 0;
+        BitField<0, 1, u32> depth_test_enable;
+        BitField<1, 1, u32> depth_write_enable;
+        BitField<2, 1, u32> stencil_test_enable;
+        BitField<3, 3, Pica::FramebufferRegs::CompareFunc> depth_compare_op;
+        BitField<6, 3, Pica::FramebufferRegs::StencilAction> stencil_fail_op;
+        BitField<9, 3, Pica::FramebufferRegs::StencilAction> stencil_pass_op;
+        BitField<12, 3, Pica::FramebufferRegs::StencilAction> stencil_depth_fail_op;
+        BitField<15, 3, Pica::FramebufferRegs::CompareFunc> stencil_compare_op;
+    };
+
+    // These are dynamic state so keep them separate
+    u8 stencil_reference;
+    u8 stencil_compare_mask;
+    u8 stencil_write_mask;
+};
+
+union BlendingState {
+    u32 value = 0;
+    BitField<0, 1, u32> blend_enable;
+    BitField<1, 4, Pica::FramebufferRegs::BlendFactor> src_color_blend_factor;
+    BitField<5, 4, Pica::FramebufferRegs::BlendFactor> dst_color_blend_factor;
+    BitField<9, 3, Pica::FramebufferRegs::BlendEquation> color_blend_eq;
+    BitField<12, 4, Pica::FramebufferRegs::BlendFactor> src_alpha_blend_factor;
+    BitField<16, 4, Pica::FramebufferRegs::BlendFactor> dst_alpha_blend_factor;
+    BitField<20, 3, Pica::FramebufferRegs::BlendEquation> alpha_blend_eq;
+    BitField<23, 4, u32> color_write_mask;
+    BitField<27, 1, u32> logic_op_enable;
+    BitField<28, 4, Pica::FramebufferRegs::LogicOp> logic_op;
+};
+
+union VertexBinding {
+    u16 value = 0;
+    BitField<0, 4, u16> binding;
+    BitField<4, 1, u16> fixed;
+    BitField<5, 11, u16> stride;
+};
+
+union VertexAttribute {
+    u32 value = 0;
+    BitField<0, 4, u32> binding;
+    BitField<4, 4, u32> location;
+    BitField<8, 3, AttribType> type;
+    BitField<11, 3, u32> size;
+    BitField<14, 11, u32> offset;
+};
+
+struct VertexLayout {
+    u8 binding_count;
+    u8 attribute_count;
+    std::array<VertexBinding, MAX_VERTEX_BINDINGS> bindings;
+    std::array<VertexAttribute, MAX_VERTEX_ATTRIBUTES> attributes;
+};
+
+/**
+ * Information about a graphics/compute pipeline
+ */
+struct PipelineInfo {
+    VertexLayout vertex_layout{};
+    BlendingState blending{};
+    VideoCore::PixelFormat color_attachment = VideoCore::PixelFormat::RGBA8;
+    VideoCore::PixelFormat depth_attachment = VideoCore::PixelFormat::D24S8;
+    RasterizationState rasterization{};
+    DepthStencilState depth_stencil{};
+
+    bool IsDepthWriteEnabled() const {
+        const bool has_stencil = depth_attachment == VideoCore::PixelFormat::D24S8;
+        const bool depth_write =
+                depth_stencil.depth_test_enable && depth_stencil.depth_write_enable;
+        const bool stencil_write =
+                has_stencil && depth_stencil.stencil_test_enable && depth_stencil.stencil_write_mask != 0;
+
+        return depth_write || stencil_write;
+    }
+};
+
+union DescriptorData {
+    vk::DescriptorImageInfo image_info;
+    vk::DescriptorBufferInfo buffer_info;
+    vk::BufferView buffer_view;
+
+    bool operator!=(const DescriptorData& other) const {
+        return std::memcmp(this, &other, sizeof(DescriptorData)) != 0;
+    }
+};
+
+using DescriptorSetData = std::array<DescriptorData, MAX_DESCRIPTORS>;
+
+/**
+ * Vulkan specialized PICA shader caches
+ */
+using ProgrammableVertexShaders =
+    Pica::Shader::ShaderDoubleCache<PicaVSConfig, vk::ShaderModule, &Compile, &GenerateVertexShader>;
+
+using FixedGeometryShaders =
+    Pica::Shader::ShaderCache<PicaFixedGSConfig, vk::ShaderModule, &Compile, &GenerateFixedGeometryShader>;
+
+using FragmentShaders =
+    Pica::Shader::ShaderCache<PicaFSConfig, vk::ShaderModule, &Compile, &GenerateFragmentShader>;
+
+
+class Instance;
+class TaskScheduler;
+class RenderpassCache;
+
+/**
+ * Stores a collection of rasterizer pipelines used during rendering.
+ * In addition handles descriptor set management.
+ */
+class PipelineCache {
+public:
+    PipelineCache(const Instance& instance, TaskScheduler& scheduler, RenderpassCache& renderpass_cache);
+    ~PipelineCache();
+
+    /// Binds a pipeline using the provided information
+    void BindPipeline(const PipelineInfo& info);
+
+    /// Binds a PICA decompiled vertex shader
+    bool UseProgrammableVertexShader(const Pica::Regs& regs, Pica::Shader::ShaderSetup& setup);
+
+    /// Binds a passthrough vertex shader
+    void UseTrivialVertexShader();
+
+    /// Binds a PICA decompiled geometry shader
+    void UseFixedGeometryShader(const Pica::Regs& regs);
+
+    /// Binds a passthrough geometry shader
+    void UseTrivialGeometryShader();
+
+    /// Binds a fragment shader generated from PICA state
+    void UseFragmentShader(const Pica::Regs& regs);
+
+    /// Binds a texture to the specified binding
+    void BindTexture(u32 binding, vk::ImageView image_view);
+
+    /// Binds a storage image to the specified binding
+    void BindStorageImage(u32 binding, vk::ImageView image_view);
+
+    /// Binds a buffer to the specified binding
+    void BindBuffer(u32 binding, vk::Buffer buffer, u32 offset, u32 size);
+
+    /// Binds a buffer to the specified binding
+    void BindTexelBuffer(u32 binding, vk::BufferView buffer_view);
+
+    /// Binds a sampler to the specified binding
+    void BindSampler(u32 binding, vk::Sampler sampler);
+
+    /// Sets the viewport rectangle to the provided values
+    void SetViewport(float x, float y, float width, float height);
+
+    /// Sets the scissor rectange to the provided values
+    void SetScissor(s32 x, s32 y, u32 width, u32 height);
+
+    /// Marks all cached pipeline cache state as dirty
+    void MarkDirty();
+
+private:
+    /// Binds a resource to the provided binding
+    void SetBinding(u32 set, u32 binding, DescriptorData data);
+
+    /// Applies dynamic pipeline state to the current command buffer
+    void ApplyDynamic(const PipelineInfo& info);
+
+    /// Builds the rasterizer pipeline layout
+    void BuildLayout();
+
+    /// Builds a rasterizer pipeline using the PipelineInfo struct
+    vk::Pipeline BuildPipeline(const PipelineInfo& info);
+
+    /// Builds descriptor sets that reference the currently bound resources
+    void BindDescriptorSets();
+
+    /// Loads the pipeline cache stored to disk
+    void LoadDiskCache();
+
+    /// Stores the generated pipeline cache to disk
+    void SaveDiskCache();
+
+    /// Returns true when the disk data can be used by the current driver
+    bool IsCacheValid(const u8* data, u32 size) const;
+
+    /// Create shader disk cache directories. Returns true on success.
+    bool EnsureDirectories() const;
+
+    /// Returns the pipeline cache storage dir
+    std::string GetPipelineCacheDir() const;
+
+private:
+    const Instance& instance;
+    TaskScheduler& scheduler;
+    RenderpassCache& renderpass_cache;
+
+    // Cached pipelines
+    vk::PipelineCache pipeline_cache;
+    std::unordered_map<u64, vk::Pipeline, Common::IdentityHash<u64>> graphics_pipelines;
+    vk::Pipeline current_pipeline{};
+
+    // Cached layouts for the rasterizer pipelines
+    vk::PipelineLayout layout;
+    std::array<vk::DescriptorSetLayout, MAX_DESCRIPTOR_SETS> descriptor_set_layouts;
+    std::array<vk::DescriptorUpdateTemplate, MAX_DESCRIPTOR_SETS> update_templates;
+
+    // Current data for the descriptor sets
+    std::array<DescriptorSetData, MAX_DESCRIPTOR_SETS> update_data{};
+    std::array<bool, MAX_DESCRIPTOR_SETS> descriptor_dirty{};
+    std::array<vk::DescriptorSet, MAX_DESCRIPTOR_SETS> descriptor_sets;
+    u64 timestamp = 0;
+
+    // Bound shader modules
+    enum ProgramType : u32 {
+        VS = 0,
+        GS = 2,
+        FS = 1
+    };
+
+    std::array<vk::ShaderModule, MAX_SHADER_STAGES> current_shaders;
+    std::array<u64, MAX_SHADER_STAGES> shader_hashes;
+    ProgrammableVertexShaders programmable_vertex_shaders;
+    FixedGeometryShaders fixed_geometry_shaders;
+    FragmentShaders fragment_shaders;
+    vk::ShaderModule trivial_vertex_shader;
+};
+
+} // namespace Vulkan

src/video_core/renderer_vulkan/vk_platform.cpp

@@ -0,0 +1,131 @@
+// Copyright 2022 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+// Include the vulkan platform specific header
+#if defined(ANDROID) || defined (__ANDROID__)
+    #define VK_USE_PLATFORM_ANDROID_KHR
+#elif defined(_WIN32)
+    #define VK_USE_PLATFORM_WIN32_KHR
+#elif defined(__APPLE__)
+    #define VK_USE_PLATFORM_MACOS_MVK
+    #define VK_USE_PLATFORM_METAL_EXT
+#else
+    #define VK_USE_PLATFORM_WAYLAND_KHR
+    #define VK_USE_PLATFORM_XLIB_KHR
+#endif
+
+#define VULKAN_HPP_NO_CONSTRUCTORS
+#include "common/assert.h"
+#include "common/logging/log.h"
+#include "core/frontend/emu_window.h"
+#include "video_core/renderer_vulkan/vk_platform.h"
+
+namespace Vulkan {
+
+vk::SurfaceKHR CreateSurface(vk::Instance instance, const Frontend::EmuWindow& emu_window) {
+    const auto& window_info = emu_window.GetWindowInfo();
+    vk::SurfaceKHR surface{};
+
+    // Perform instance function loading here, to also load window system functions
+    VULKAN_HPP_DEFAULT_DISPATCHER.init(instance);
+
+#if defined(VK_USE_PLATFORM_WIN32_KHR)
+    if (window_info.type == Frontend::WindowSystemType::Windows) {
+        const vk::Win32SurfaceCreateInfoKHR win32_ci = {
+            .hinstance = nullptr,
+            .hwnd = static_cast<HWND>(window_info.render_surface)
+        };
+
+        if (instance.createWin32SurfaceKHR(&win32_ci, nullptr, &surface) != vk::Result::eSuccess) {
+            LOG_CRITICAL(Render_Vulkan, "Failed to initialize Win32 surface");
+            UNREACHABLE();
+        }
+    }
+#elif defined(VK_USE_PLATFORM_XLIB_KHR) || defined(VK_USE_PLATFORM_WAYLAND_KHR)
+    if (window_info.type == Frontend::WindowSystemType::X11) {
+        const vk::XlibSurfaceCreateInfoKHR xlib_ci = {
+            .dpy = static_cast<Display*>(window_info.display_connection),
+            .window = reinterpret_cast<Window>(window_info.render_surface)
+        };
+
+        if (instance.createXlibSurfaceKHR(&xlib_ci, nullptr, &surface) != vk::Result::eSuccess) {
+            LOG_ERROR(Render_Vulkan, "Failed to initialize Xlib surface");
+            UNREACHABLE();
+        }
+    }
+
+    if (window_info.type == Frontend::WindowSystemType::Wayland) {
+        const vk::WaylandSurfaceCreateInfoKHR wayland_ci = {
+            .display = static_cast<wl_display*>(window_info.display_connection),
+            .surface = static_cast<wl_surface*>(window_info.render_surface)
+        };
+
+        if (instance.createWaylandSurfaceKHR(&wayland_ci, nullptr, &surface) != vk::Result::eSuccess) {
+            LOG_ERROR(Render_Vulkan, "Failed to initialize Wayland surface");
+            UNREACHABLE();
+        }
+    }
+#endif
+
+    if (!surface) {
+        LOG_CRITICAL(Render_Vulkan, "Presentation not supported on this platform");
+    }
+
+    return surface;
+}
+
+std::vector<const char*> GetInstanceExtensions(Frontend::WindowSystemType window_type, bool enable_debug_utils) {
+    const auto properties = vk::enumerateInstanceExtensionProperties();
+    if (properties.empty()) {
+        LOG_ERROR(Render_Vulkan, "Failed to query extension properties");
+        return std::vector<const char*>{};
+    }
+
+    // Add the windowing system specific extension
+    std::vector<const char*> extensions;
+    extensions.reserve(6);
+
+    switch (window_type) {
+    case Frontend::WindowSystemType::Headless:
+        break;
+#if defined(VK_USE_PLATFORM_WIN32_KHR)
+    case Frontend::WindowSystemType::Windows:
+        extensions.push_back(VK_KHR_WIN32_SURFACE_EXTENSION_NAME);
+        break;
+#elif defined(VK_USE_PLATFORM_XLIB_KHR) || defined(VK_USE_PLATFORM_WAYLAND_KHR)
+    case Frontend::WindowSystemType::X11:
+        extensions.push_back(VK_KHR_XLIB_SURFACE_EXTENSION_NAME);
+        break;
+    case Frontend::WindowSystemType::Wayland:
+        extensions.push_back(VK_KHR_WAYLAND_SURFACE_EXTENSION_NAME);
+        break;
+#endif
+    default:
+        LOG_ERROR(Render_Vulkan, "Presentation not supported on this platform");
+        break;
+    }
+
+    if (window_type != Frontend::WindowSystemType::Headless) {
+        extensions.push_back(VK_KHR_SURFACE_EXTENSION_NAME);
+    }
+
+    if (enable_debug_utils) {
+        extensions.push_back(VK_EXT_DEBUG_UTILS_EXTENSION_NAME);
+    }
+
+    for (const char* extension : extensions) {
+        const auto iter = std::ranges::find_if(properties, [extension](const auto& prop) {
+            return std::strcmp(extension, prop.extensionName) == 0;
+        });
+
+        if (iter == properties.end()) {
+            LOG_ERROR(Render_Vulkan, "Required instance extension {} is not available", extension);
+            return std::vector<const char*>{};
+        }
+    }
+
+    return extensions;
+}
+
+} // namespace Vulkan

src/video_core/renderer_vulkan/vk_platform.h

@@ -0,0 +1,22 @@
+// Copyright 2022 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <vector>
+#include "common/common_types.h"
+#include "video_core/renderer_vulkan/vk_common.h"
+
+namespace Frontend {
+class EmuWindow;
+enum class WindowSystemType : u8;
+}
+
+namespace Vulkan {
+
+std::vector<const char*> GetInstanceExtensions(Frontend::WindowSystemType window_type, bool enable_debug_utils);
+
+vk::SurfaceKHR CreateSurface(vk::Instance instance, const Frontend::EmuWindow& emu_window);
+
+} // namespace Vulkan

src/video_core/renderer_vulkan/vk_rasterizer.h

@@ -0,0 +1,317 @@
+// Copyright 2022 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "common/vector_math.h"
+#include "core/hw/gpu.h"
+#include "video_core/rasterizer_accelerated.h"
+#include "video_core/regs_lighting.h"
+#include "video_core/regs_texturing.h"
+#include "video_core/renderer_vulkan/vk_stream_buffer.h"
+#include "video_core/renderer_vulkan/vk_pipeline_cache.h"
+#include "video_core/renderer_vulkan/vk_texture_runtime.h"
+#include "video_core/shader/shader.h"
+#include "video_core/shader/shader_uniforms.h"
+
+namespace Frontend {
+class EmuWindow;
+}
+
+namespace Vulkan {
+
+struct ScreenInfo;
+
+class Instance;
+class TaskScheduler;
+class RenderpassCache;
+
+struct SamplerInfo {
+    using TextureConfig = Pica::TexturingRegs::TextureConfig;
+    TextureConfig::TextureFilter mag_filter;
+    TextureConfig::TextureFilter min_filter;
+    TextureConfig::TextureFilter mip_filter;
+    TextureConfig::WrapMode wrap_s;
+    TextureConfig::WrapMode wrap_t;
+    u32 border_color = 0;
+    u32 lod_min = 0;
+    u32 lod_max = 0;
+    s32 lod_bias = 0;
+
+    // TODO(wwylele): remove this once mipmap for cube is implemented
+    bool supress_mipmap_for_cube = false;
+
+    auto operator<=>(const SamplerInfo&) const noexcept = default;
+};
+
+struct FramebufferInfo {
+    vk::ImageView color;
+    vk::ImageView depth;
+    vk::RenderPass renderpass;
+    u32 width = 1;
+    u32 height = 1;
+
+    auto operator<=>(const FramebufferInfo&) const noexcept = default;
+};
+
+}
+
+namespace std {
+template <>
+struct hash<Vulkan::SamplerInfo> {
+    std::size_t operator()(const Vulkan::SamplerInfo& info) const noexcept {
+        return Common::ComputeHash64(&info, sizeof(Vulkan::SamplerInfo));
+    }
+};
+
+template <>
+struct hash<Vulkan::FramebufferInfo> {
+    std::size_t operator()(const Vulkan::FramebufferInfo& info) const noexcept {
+        return Common::ComputeHash64(&info, sizeof(Vulkan::FramebufferInfo));
+    }
+};
+} // namespace std
+
+namespace Vulkan {
+
+class RasterizerVulkan : public VideoCore::RasterizerAccelerated {
+    friend class RendererVulkan;
+public:
+    explicit RasterizerVulkan(Frontend::EmuWindow& emu_window, const Instance& instance, TaskScheduler& scheduler,
+                              TextureRuntime& runtime, RenderpassCache& renderpass_cache);
+    ~RasterizerVulkan() override;
+
+    void LoadDiskResources(const std::atomic_bool& stop_loading,
+                           const VideoCore::DiskResourceLoadCallback& callback) override;
+
+    void AddTriangle(const Pica::Shader::OutputVertex& v0, const Pica::Shader::OutputVertex& v1,
+                     const Pica::Shader::OutputVertex& v2) override;
+    void DrawTriangles() override;
+    void NotifyPicaRegisterChanged(u32 id) override;
+    void FlushAll() override;
+    void FlushRegion(PAddr addr, u32 size) override;
+    void InvalidateRegion(PAddr addr, u32 size) override;
+    void FlushAndInvalidateRegion(PAddr addr, u32 size) override;
+    bool AccelerateDisplayTransfer(const GPU::Regs::DisplayTransferConfig& config) override;
+    bool AccelerateTextureCopy(const GPU::Regs::DisplayTransferConfig& config) override;
+    bool AccelerateFill(const GPU::Regs::MemoryFillConfig& config) override;
+    bool AccelerateDisplay(const GPU::Regs::FramebufferConfig& config, PAddr framebuffer_addr,
+                           u32 pixel_stride, ScreenInfo& screen_info);
+    bool AccelerateDrawBatch(bool is_indexed) override;
+
+    /// Syncs entire status to match PICA registers
+    void SyncEntireState() override;
+
+    /// Sync fixed function pipeline state
+    void SyncFixedState();
+
+    /// Flushes all rasterizer owned buffers
+    void FlushBuffers();
+
+private:
+    /// Syncs the clip enabled status to match the PICA register
+    void SyncClipEnabled();
+
+    /// Syncs the clip coefficients to match the PICA register
+    void SyncClipCoef();
+
+    /// Sets the OpenGL shader in accordance with the current PICA register state
+    void SetShader();
+
+    /// Syncs the cull mode to match the PICA register
+    void SyncCullMode();
+
+    /// Syncs the depth scale to match the PICA register
+    void SyncDepthScale();
+
+    /// Syncs the depth offset to match the PICA register
+    void SyncDepthOffset();
+
+    /// Syncs the blend enabled status to match the PICA register
+    void SyncBlendEnabled();
+
+    /// Syncs the blend functions to match the PICA register
+    void SyncBlendFuncs();
+
+    /// Syncs the blend color to match the PICA register
+    void SyncBlendColor();
+
+    /// Syncs the fog states to match the PICA register
+    void SyncFogColor();
+
+    /// Sync the procedural texture noise configuration to match the PICA register
+    void SyncProcTexNoise();
+
+    /// Sync the procedural texture bias configuration to match the PICA register
+    void SyncProcTexBias();
+
+    /// Syncs the alpha test states to match the PICA register
+    void SyncAlphaTest();
+
+    /// Syncs the logic op states to match the PICA register
+    void SyncLogicOp();
+
+    /// Syncs the color write mask to match the PICA register state
+    void SyncColorWriteMask();
+
+    /// Syncs the stencil write mask to match the PICA register state
+    void SyncStencilWriteMask();
+
+    /// Syncs the depth write mask to match the PICA register state
+    void SyncDepthWriteMask();
+
+    /// Syncs the stencil test states to match the PICA register
+    void SyncStencilTest();
+
+    /// Syncs the depth test states to match the PICA register
+    void SyncDepthTest();
+
+    /// Syncs the TEV combiner color buffer to match the PICA register
+    void SyncCombinerColor();
+
+    /// Syncs the TEV constant color to match the PICA register
+    void SyncTevConstColor(std::size_t tev_index,
+                           const Pica::TexturingRegs::TevStageConfig& tev_stage);
+
+    /// Syncs the lighting global ambient color to match the PICA register
+    void SyncGlobalAmbient();
+
+    /// Syncs the specified light's specular 0 color to match the PICA register
+    void SyncLightSpecular0(int light_index);
+
+    /// Syncs the specified light's specular 1 color to match the PICA register
+    void SyncLightSpecular1(int light_index);
+
+    /// Syncs the specified light's diffuse color to match the PICA register
+    void SyncLightDiffuse(int light_index);
+
+    /// Syncs the specified light's ambient color to match the PICA register
+    void SyncLightAmbient(int light_index);
+
+    /// Syncs the specified light's position to match the PICA register
+    void SyncLightPosition(int light_index);
+
+    /// Syncs the specified spot light direcition to match the PICA register
+    void SyncLightSpotDirection(int light_index);
+
+    /// Syncs the specified light's distance attenuation bias to match the PICA register
+    void SyncLightDistanceAttenuationBias(int light_index);
+
+    /// Syncs the specified light's distance attenuation scale to match the PICA register
+    void SyncLightDistanceAttenuationScale(int light_index);
+
+    /// Syncs the shadow rendering bias to match the PICA register
+    void SyncShadowBias();
+
+    /// Syncs the shadow texture bias to match the PICA register
+    void SyncShadowTextureBias();
+
+    /// Syncs and uploads the lighting, fog and proctex LUTs
+    void SyncAndUploadLUTs();
+    void SyncAndUploadLUTsLF();
+
+    /// Upload the uniform blocks to the uniform buffer object
+    void UploadUniforms(bool accelerate_draw);
+
+    /// Generic draw function for DrawTriangles and AccelerateDrawBatch
+    bool Draw(bool accelerate, bool is_indexed);
+
+    /// Internal implementation for AccelerateDrawBatch
+    bool AccelerateDrawBatchInternal(bool is_indexed);
+
+    struct VertexArrayInfo {
+        u32 vs_input_index_min;
+        u32 vs_input_index_max;
+        u32 vs_input_size;
+    };
+
+    /// Retrieve the range and the size of the input vertex
+    VertexArrayInfo AnalyzeVertexArray(bool is_indexed);
+
+    /// Setup vertex array for AccelerateDrawBatch
+    void SetupVertexArray(u32 vs_input_size, u32 vs_input_index_min, u32 vs_input_index_max);
+
+    /// Setup vertex shader for AccelerateDrawBatch
+    bool SetupVertexShader();
+
+    /// Setup geometry shader for AccelerateDrawBatch
+    bool SetupGeometryShader();
+
+    /// Creates a new sampler object
+    vk::Sampler CreateSampler(const SamplerInfo& info);
+
+    /// Creates a new Vulkan framebuffer object
+    vk::Framebuffer CreateFramebuffer(const FramebufferInfo& info);
+
+private:
+    const Instance& instance;
+    TaskScheduler& scheduler;
+    TextureRuntime& runtime;
+    RenderpassCache& renderpass_cache;
+    RasterizerCache res_cache;
+    PipelineCache pipeline_cache;
+    bool shader_dirty = true;
+
+    /// Structure that the hardware rendered vertices are composed of
+    struct HardwareVertex {
+        HardwareVertex() = default;
+        HardwareVertex(const Pica::Shader::OutputVertex& v, bool flip_quaternion);
+
+        constexpr static VertexLayout GetVertexLayout();
+
+        Common::Vec4f position;
+        Common::Vec4f color;
+        Common::Vec2f tex_coord0;
+        Common::Vec2f tex_coord1;
+        Common::Vec2f tex_coord2;
+        float tex_coord0_w;
+        Common::Vec4f normquat;
+        Common::Vec3f view;
+    };
+
+    std::vector<HardwareVertex> vertex_batch;
+    ImageAlloc default_texture;
+    vk::Sampler default_sampler;
+
+    struct {
+        Pica::Shader::UniformData data{};
+        std::array<bool, Pica::LightingRegs::NumLightingSampler> lighting_lut_dirty{};
+        bool lighting_lut_dirty_any = true;
+        bool fog_lut_dirty = true;
+        bool proctex_noise_lut_dirty = true;
+        bool proctex_color_map_dirty = true;
+        bool proctex_alpha_map_dirty = true;
+        bool proctex_lut_dirty = true;
+        bool proctex_diff_lut_dirty = true;
+        bool dirty = true;
+    } uniform_block_data = {};
+
+    std::array<bool, 16> hw_enabled_attributes{};
+
+    std::array<SamplerInfo, 3> texture_samplers;
+    SamplerInfo texture_cube_sampler;
+    std::unordered_map<SamplerInfo, vk::Sampler> samplers;
+    std::unordered_map<FramebufferInfo, vk::Framebuffer> framebuffers;
+
+    StreamBuffer vertex_buffer;
+    StreamBuffer uniform_buffer;
+    StreamBuffer index_buffer;
+    StreamBuffer texture_buffer;
+    StreamBuffer texture_lf_buffer;
+    PipelineInfo pipeline_info;
+    std::size_t uniform_buffer_alignment;
+    std::size_t uniform_size_aligned_vs;
+    std::size_t uniform_size_aligned_fs;
+
+    std::array<std::array<Common::Vec2f, 256>, Pica::LightingRegs::NumLightingSampler>
+        lighting_lut_data{};
+    std::array<Common::Vec2f, 128> fog_lut_data{};
+    std::array<Common::Vec2f, 128> proctex_noise_lut_data{};
+    std::array<Common::Vec2f, 128> proctex_color_map_data{};
+    std::array<Common::Vec2f, 128> proctex_alpha_map_data{};
+    std::array<Common::Vec4f, 256> proctex_lut_data{};
+    std::array<Common::Vec4f, 256> proctex_diff_lut_data{};
+};
+
+} // namespace Vulkan

src/video_core/renderer_vulkan/vk_renderpass_cache.cpp

@@ -0,0 +1,196 @@
+// Copyright 2022 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#define VULKAN_HPP_NO_CONSTRUCTORS
+#include "common/assert.h"
+#include "video_core/renderer_vulkan/vk_renderpass_cache.h"
+#include "video_core/renderer_vulkan/vk_instance.h"
+#include "video_core/renderer_vulkan/vk_task_scheduler.h"
+
+namespace Vulkan {
+
+vk::Format ToVkFormatColor(u32 index) {
+    switch (index) {
+    case 0: return vk::Format::eR8G8B8A8Unorm;
+    case 1: return vk::Format::eR8G8B8Unorm;
+    case 2: return vk::Format::eR5G5B5A1UnormPack16;
+    case 3: return vk::Format::eR5G6B5UnormPack16;
+    case 4: return vk::Format::eR4G4B4A4UnormPack16;
+    default: return vk::Format::eUndefined;
+    }
+}
+
+vk::Format ToVkFormatDepth(u32 index) {
+    switch (index) {
+    case 0: return vk::Format::eD16Unorm;
+    case 1: return vk::Format::eX8D24UnormPack32;
+    // Notice the similar gap in PixelFormat
+    case 3: return vk::Format::eD24UnormS8Uint;
+    default: return vk::Format::eUndefined;
+    }
+}
+
+RenderpassCache::RenderpassCache(const Instance& instance, TaskScheduler& scheduler)
+    : instance{instance}, scheduler{scheduler} {
+    // Pre-create all needed renderpasses by the renderer
+    for (u32 color = 0; color <= MAX_COLOR_FORMATS; color++) {
+        for (u32 depth = 0; depth <= MAX_DEPTH_FORMATS; depth++) {
+            const vk::Format color_format =
+                    instance.GetFormatAlternative(ToVkFormatColor(color));
+            const vk::Format depth_stencil_format =
+                    instance.GetFormatAlternative(ToVkFormatDepth(depth));
+
+            if (color_format == vk::Format::eUndefined &&
+                    depth_stencil_format == vk::Format::eUndefined) {
+                continue;
+            }
+
+            cached_renderpasses[color][depth][0] = CreateRenderPass(color_format, depth_stencil_format,
+                                                                    vk::AttachmentLoadOp::eLoad,
+                                                                    vk::ImageLayout::eColorAttachmentOptimal,
+                                                                    vk::ImageLayout::eColorAttachmentOptimal);
+            cached_renderpasses[color][depth][1] = CreateRenderPass(color_format, depth_stencil_format,
+                                                                    vk::AttachmentLoadOp::eClear,
+                                                                    vk::ImageLayout::eColorAttachmentOptimal,
+                                                                    vk::ImageLayout::eColorAttachmentOptimal);
+        }
+    }
+}
+
+RenderpassCache::~RenderpassCache() {
+    vk::Device device = instance.GetDevice();
+    for (u32 color = 0; color <= MAX_COLOR_FORMATS; color++) {
+        for (u32 depth = 0; depth <= MAX_DEPTH_FORMATS; depth++) {
+            if (vk::RenderPass load_pass = cached_renderpasses[color][depth][0]; load_pass) {
+                device.destroyRenderPass(load_pass);
+            }
+
+            if (vk::RenderPass clear_pass = cached_renderpasses[color][depth][1]; clear_pass) {
+                device.destroyRenderPass(clear_pass);
+            }
+        }
+    }
+
+    device.destroyRenderPass(present_renderpass);
+}
+
+void RenderpassCache::EnterRenderpass(const vk::RenderPassBeginInfo begin_info) {
+    if (active_renderpass == begin_info.renderPass) {
+        return;
+    }
+
+    vk::CommandBuffer command_buffer = scheduler.GetRenderCommandBuffer();
+    if (active_renderpass) {
+        command_buffer.endRenderPass();
+    }
+
+    command_buffer.beginRenderPass(begin_info, vk::SubpassContents::eInline);
+    active_renderpass = begin_info.renderPass;
+}
+
+void RenderpassCache::ExitRenderpass() {
+    if (!active_renderpass) {
+        return;
+    }
+
+    vk::CommandBuffer command_buffer = scheduler.GetRenderCommandBuffer();
+    command_buffer.endRenderPass();
+    active_renderpass = VK_NULL_HANDLE;
+}
+
+void RenderpassCache::CreatePresentRenderpass(vk::Format format) {
+    if (!present_renderpass) {
+        present_renderpass = CreateRenderPass(format, vk::Format::eUndefined,
+                                              vk::AttachmentLoadOp::eClear,
+                                              vk::ImageLayout::eUndefined,
+                                              vk::ImageLayout::ePresentSrcKHR);
+    }
+}
+
+vk::RenderPass RenderpassCache::GetRenderpass(VideoCore::PixelFormat color, VideoCore::PixelFormat depth,
+                                              bool is_clear) const {
+    const u32 color_index =
+            color == VideoCore::PixelFormat::Invalid ? MAX_COLOR_FORMATS : static_cast<u32>(color);
+    const u32 depth_index =
+            depth == VideoCore::PixelFormat::Invalid ? MAX_DEPTH_FORMATS : (static_cast<u32>(depth) - 14);
+
+    ASSERT(color_index <= MAX_COLOR_FORMATS && depth_index <= MAX_DEPTH_FORMATS);
+    return cached_renderpasses[color_index][depth_index][is_clear];
+}
+
+vk::RenderPass RenderpassCache::CreateRenderPass(vk::Format color, vk::Format depth, vk::AttachmentLoadOp load_op,
+                                                 vk::ImageLayout initial_layout, vk::ImageLayout final_layout) const {
+    // Define attachments
+    u32 attachment_count = 0;
+    std::array<vk::AttachmentDescription, 2> attachments;
+
+    bool use_color = false;
+    vk::AttachmentReference color_attachment_ref{};
+    bool use_depth = false;
+    vk::AttachmentReference depth_attachment_ref{};
+
+    if (color != vk::Format::eUndefined) {
+        attachments[attachment_count] = vk::AttachmentDescription{
+            .format = color,
+            .loadOp = load_op,
+            .storeOp = vk::AttachmentStoreOp::eStore,
+            .stencilLoadOp = vk::AttachmentLoadOp::eDontCare,
+            .stencilStoreOp = vk::AttachmentStoreOp::eDontCare,
+            .initialLayout = initial_layout,
+            .finalLayout = final_layout
+        };
+
+        color_attachment_ref = vk::AttachmentReference{
+            .attachment = attachment_count++,
+            .layout = vk::ImageLayout::eColorAttachmentOptimal
+       };
+
+        use_color = true;
+    }
+
+    if (depth != vk::Format::eUndefined) {
+        attachments[attachment_count] = vk::AttachmentDescription{
+            .format = depth,
+            .loadOp = load_op,
+            .storeOp = vk::AttachmentStoreOp::eStore,
+            .stencilLoadOp = vk::AttachmentLoadOp::eLoad,
+            .stencilStoreOp = vk::AttachmentStoreOp::eStore,
+            .initialLayout = vk::ImageLayout::eDepthStencilAttachmentOptimal,
+            .finalLayout = vk::ImageLayout::eDepthStencilAttachmentOptimal
+        };
+
+        depth_attachment_ref = vk::AttachmentReference{
+            .attachment = attachment_count++,
+            .layout = vk::ImageLayout::eDepthStencilAttachmentOptimal
+        };
+
+        use_depth = true;
+    }
+
+    // We also require only one subpass
+    const vk::SubpassDescription subpass = {
+        .pipelineBindPoint = vk::PipelineBindPoint::eGraphics,
+        .inputAttachmentCount = 0,
+        .pInputAttachments = nullptr,
+        .colorAttachmentCount = use_color ? 1u : 0u,
+        .pColorAttachments = &color_attachment_ref,
+        .pResolveAttachments = 0,
+        .pDepthStencilAttachment = use_depth ? &depth_attachment_ref : nullptr
+    };
+
+    const vk::RenderPassCreateInfo renderpass_info = {
+        .attachmentCount = attachment_count,
+        .pAttachments = attachments.data(),
+        .subpassCount = 1,
+        .pSubpasses = &subpass,
+        .dependencyCount = 0,
+        .pDependencies = nullptr
+    };
+
+    // Create the renderpass
+    vk::Device device = instance.GetDevice();
+    return device.createRenderPass(renderpass_info);
+}
+
+} // namespace VideoCore::Vulkan

src/video_core/renderer_vulkan/vk_renderpass_cache.h

@@ -0,0 +1,55 @@
+// Copyright 2022 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "video_core/rasterizer_cache/pixel_format.h"
+#include "video_core/renderer_vulkan/vk_common.h"
+
+namespace Vulkan {
+
+class Instance;
+class TaskScheduler;
+
+constexpr u32 MAX_COLOR_FORMATS = 5;
+constexpr u32 MAX_DEPTH_FORMATS = 4;
+
+class RenderpassCache {
+public:
+    RenderpassCache(const Instance& instance, TaskScheduler& scheduler);
+    ~RenderpassCache();
+
+    /// Begins a new renderpass only when no other renderpass is currently active
+    void EnterRenderpass(const vk::RenderPassBeginInfo begin_info);
+
+    /// Exits from any currently active renderpass instance
+    void ExitRenderpass();
+
+    /// Returns the renderpass associated with the color-depth format pair
+    [[nodiscard]] vk::RenderPass GetRenderpass(VideoCore::PixelFormat color, VideoCore::PixelFormat depth,
+                                               bool is_clear) const;
+
+    /// Returns the swapchain clear renderpass
+    [[nodiscard]] vk::RenderPass GetPresentRenderpass() const {
+        return present_renderpass;
+    }
+
+    /// Creates the renderpass used when rendering to the swapchain
+    void CreatePresentRenderpass(vk::Format format);
+
+private:
+    /// Creates a renderpass configured appropriately and stores it in cached_renderpasses
+    vk::RenderPass CreateRenderPass(vk::Format color, vk::Format depth, vk::AttachmentLoadOp load_op,
+                                    vk::ImageLayout initial_layout, vk::ImageLayout final_layout) const;
+
+private:
+    const Instance& instance;
+    TaskScheduler& scheduler;
+
+    vk::RenderPass active_renderpass = VK_NULL_HANDLE;
+    vk::RenderPass present_renderpass{};
+    vk::RenderPass cached_renderpasses[MAX_COLOR_FORMATS+1][MAX_DEPTH_FORMATS+1][2];
+};
+
+} // namespace Vulkan

src/video_core/renderer_vulkan/vk_shader.cpp

@@ -0,0 +1,223 @@
+// Copyright 2022 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#define VULKAN_HPP_NO_CONSTRUCTORS
+#include "common/assert.h"
+#include "common/logging/log.h"
+#include "video_core/renderer_vulkan/vk_shader.h"
+#include <glslang/Public/ShaderLang.h>
+#include <glslang/Include/ResourceLimits.h>
+#include <SPIRV/GlslangToSpv.h>
+
+namespace Vulkan {
+
+constexpr TBuiltInResource DefaultTBuiltInResource = {
+    .maxLights = 32,
+    .maxClipPlanes = 6,
+    .maxTextureUnits = 32,
+    .maxTextureCoords = 32,
+    .maxVertexAttribs = 64,
+    .maxVertexUniformComponents = 4096,
+    .maxVaryingFloats = 64,
+    .maxVertexTextureImageUnits = 32,
+    .maxCombinedTextureImageUnits = 80,
+    .maxTextureImageUnits = 32,
+    .maxFragmentUniformComponents = 4096,
+    .maxDrawBuffers = 32,
+    .maxVertexUniformVectors = 128,
+    .maxVaryingVectors = 8,
+    .maxFragmentUniformVectors = 16,
+    .maxVertexOutputVectors = 16,
+    .maxFragmentInputVectors = 15,
+    .minProgramTexelOffset = -8,
+    .maxProgramTexelOffset = 7,
+    .maxClipDistances = 8,
+    .maxComputeWorkGroupCountX = 65535,
+    .maxComputeWorkGroupCountY = 65535,
+    .maxComputeWorkGroupCountZ = 65535,
+    .maxComputeWorkGroupSizeX = 1024,
+    .maxComputeWorkGroupSizeY = 1024,
+    .maxComputeWorkGroupSizeZ = 64,
+    .maxComputeUniformComponents = 1024,
+    .maxComputeTextureImageUnits = 16,
+    .maxComputeImageUniforms = 8,
+    .maxComputeAtomicCounters = 8,
+    .maxComputeAtomicCounterBuffers = 1,
+    .maxVaryingComponents = 60,
+    .maxVertexOutputComponents = 64,
+    .maxGeometryInputComponents = 64,
+    .maxGeometryOutputComponents = 128,
+    .maxFragmentInputComponents = 128,
+    .maxImageUnits = 8,
+    .maxCombinedImageUnitsAndFragmentOutputs = 8,
+    .maxCombinedShaderOutputResources = 8,
+    .maxImageSamples = 0,
+    .maxVertexImageUniforms = 0,
+    .maxTessControlImageUniforms = 0,
+    .maxTessEvaluationImageUniforms = 0,
+    .maxGeometryImageUniforms = 0,
+    .maxFragmentImageUniforms = 8,
+    .maxCombinedImageUniforms = 8,
+    .maxGeometryTextureImageUnits = 16,
+    .maxGeometryOutputVertices = 256,
+    .maxGeometryTotalOutputComponents = 1024,
+    .maxGeometryUniformComponents = 1024,
+    .maxGeometryVaryingComponents = 64,
+    .maxTessControlInputComponents = 128,
+    .maxTessControlOutputComponents = 128,
+    .maxTessControlTextureImageUnits = 16,
+    .maxTessControlUniformComponents = 1024,
+    .maxTessControlTotalOutputComponents = 4096,
+    .maxTessEvaluationInputComponents = 128,
+    .maxTessEvaluationOutputComponents = 128,
+    .maxTessEvaluationTextureImageUnits = 16,
+    .maxTessEvaluationUniformComponents = 1024,
+    .maxTessPatchComponents = 120,
+    .maxPatchVertices = 32,
+    .maxTessGenLevel = 64,
+    .maxViewports = 16,
+    .maxVertexAtomicCounters = 0,
+    .maxTessControlAtomicCounters = 0,
+    .maxTessEvaluationAtomicCounters = 0,
+    .maxGeometryAtomicCounters = 0,
+    .maxFragmentAtomicCounters = 8,
+    .maxCombinedAtomicCounters = 8,
+    .maxAtomicCounterBindings = 1,
+    .maxVertexAtomicCounterBuffers = 0,
+    .maxTessControlAtomicCounterBuffers = 0,
+    .maxTessEvaluationAtomicCounterBuffers = 0,
+    .maxGeometryAtomicCounterBuffers = 0,
+    .maxFragmentAtomicCounterBuffers = 1,
+    .maxCombinedAtomicCounterBuffers = 1,
+    .maxAtomicCounterBufferSize = 16384,
+    .maxTransformFeedbackBuffers = 4,
+    .maxTransformFeedbackInterleavedComponents = 64,
+    .maxCullDistances = 8,
+    .maxCombinedClipAndCullDistances = 8,
+    .maxSamples = 4,
+    .maxMeshOutputVerticesNV = 256,
+    .maxMeshOutputPrimitivesNV = 512,
+    .maxMeshWorkGroupSizeX_NV = 32,
+    .maxMeshWorkGroupSizeY_NV = 1,
+    .maxMeshWorkGroupSizeZ_NV = 1,
+    .maxTaskWorkGroupSizeX_NV = 32,
+    .maxTaskWorkGroupSizeY_NV = 1,
+    .maxTaskWorkGroupSizeZ_NV = 1,
+    .maxMeshViewCountNV = 4,
+    .maxDualSourceDrawBuffersEXT = 1,
+    .limits = TLimits{
+        .nonInductiveForLoops = 1,
+        .whileLoops = 1,
+        .doWhileLoops = 1,
+        .generalUniformIndexing = 1,
+        .generalAttributeMatrixVectorIndexing = 1,
+        .generalVaryingIndexing = 1,
+        .generalSamplerIndexing = 1,
+        .generalVariableIndexing = 1,
+        .generalConstantMatrixVectorIndexing = 1,
+    }
+};
+
+EShLanguage ToEshShaderStage(vk::ShaderStageFlagBits stage) {
+    switch (stage) {
+    case vk::ShaderStageFlagBits::eVertex:
+        return EShLanguage::EShLangVertex;
+    case vk::ShaderStageFlagBits::eGeometry:
+        return EShLanguage::EShLangGeometry;
+    case vk::ShaderStageFlagBits::eFragment:
+        return EShLanguage::EShLangFragment;
+    case vk::ShaderStageFlagBits::eCompute:
+        return EShLanguage::EShLangCompute;
+    default:
+        LOG_CRITICAL(Render_Vulkan, "Unkown shader stage");
+        UNREACHABLE();
+    }
+
+    return EShLanguage::EShLangVertex;
+}
+
+bool InitializeCompiler() {
+    static bool glslang_initialized = false;
+
+    if (glslang_initialized) {
+        return true;
+    }
+
+    if (!glslang::InitializeProcess()) {
+        LOG_CRITICAL(Render_Vulkan, "Failed to initialize glslang shader compiler");
+        return false;
+    }
+
+    std::atexit([]() { glslang::FinalizeProcess(); });
+
+    glslang_initialized = true;
+    return true;
+}
+
+vk::ShaderModule Compile(std::string_view code, vk::ShaderStageFlagBits stage, vk::Device device,
+                         ShaderOptimization level) {
+    if (!InitializeCompiler()) {
+        return VK_NULL_HANDLE;
+    }
+
+    EProfile profile = ECoreProfile;
+    EShMessages messages = static_cast<EShMessages>(EShMsgDefault | EShMsgSpvRules | EShMsgVulkanRules);
+    EShLanguage lang = ToEshShaderStage(stage);
+
+    int default_version = 450;
+    const char* pass_source_code = code.data();
+    int pass_source_code_length = static_cast<int>(code.size());
+
+    auto shader = std::make_unique<glslang::TShader>(lang);
+    shader->setEnvTarget(glslang::EShTargetSpv, glslang::EShTargetLanguageVersion::EShTargetSpv_1_3);
+    shader->setStringsWithLengths(&pass_source_code, &pass_source_code_length, 1);
+
+    glslang::TShader::ForbidIncluder includer;
+    if (!shader->parse(&DefaultTBuiltInResource, default_version, profile, false, true, messages, includer)) {
+        LOG_CRITICAL(Render_Vulkan, "Shader Info Log:\n{}\n{}", shader->getInfoLog(), shader->getInfoDebugLog());
+        return VK_NULL_HANDLE;
+    }
+
+    // Even though there's only a single shader, we still need to link it to generate SPV
+    auto program = std::make_unique<glslang::TProgram>();
+    program->addShader(shader.get());
+    if (!program->link(messages)) {
+        LOG_CRITICAL(Render_Vulkan, "Program Info Log:\n{}\n{}", program->getInfoLog(), program->getInfoDebugLog());
+        return VK_NULL_HANDLE;
+    }
+
+    glslang::TIntermediate* intermediate = program->getIntermediate(lang);
+    std::vector<u32> out_code;
+    spv::SpvBuildLogger logger;
+    glslang::SpvOptions options;
+
+    // Compile the SPIR-V module without optimizations for easier debugging in RenderDoc.
+    if (level == ShaderOptimization::Debug) {
+        intermediate->addSourceText(pass_source_code, pass_source_code_length);
+        options.generateDebugInfo = true;
+        options.disableOptimizer = true;
+        options.optimizeSize = false;
+        options.disassemble = false;
+        options.validate = true;
+    } else {
+        options.disableOptimizer = false;
+        options.stripDebugInfo = true;
+    }
+
+    glslang::GlslangToSpv(*intermediate, out_code, &logger, &options);
+
+    const std::string spv_messages = logger.getAllMessages();
+    if (!spv_messages.empty()) {
+        LOG_INFO(Render_Vulkan, "SPIR-V conversion messages: {}", spv_messages);
+    }
+
+    const vk::ShaderModuleCreateInfo shader_info = {
+        .codeSize = out_code.size() * sizeof(u32),
+        .pCode = out_code.data()
+    };
+
+    return device.createShaderModule(shader_info);
+}
+
+} // namespace Vulkan

src/video_core/renderer_vulkan/vk_shader.h

@@ -0,0 +1,19 @@
+// Copyright 2022 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "video_core/renderer_vulkan/vk_common.h"
+
+namespace Vulkan {
+
+enum class ShaderOptimization {
+    High = 0,
+    Debug = 1
+};
+
+vk::ShaderModule Compile(std::string_view code, vk::ShaderStageFlagBits stage,
+                         vk::Device device, ShaderOptimization level);
+
+} // namespace Vulkan

src/video_core/renderer_vulkan/vk_shader_gen.h

@@ -0,0 +1,247 @@
+// Copyright 2015 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+#include <functional>
+#include <optional>
+#include "common/hash.h"
+#include "video_core/regs.h"
+#include "video_core/shader/shader.h"
+
+namespace Vulkan {
+
+enum Attributes {
+    ATTRIBUTE_POSITION,
+    ATTRIBUTE_COLOR,
+    ATTRIBUTE_TEXCOORD0,
+    ATTRIBUTE_TEXCOORD1,
+    ATTRIBUTE_TEXCOORD2,
+    ATTRIBUTE_TEXCOORD0_W,
+    ATTRIBUTE_NORMQUAT,
+    ATTRIBUTE_VIEW,
+};
+
+// Doesn't include const_color because we don't sync it, see comment in BuildFromRegs()
+struct TevStageConfigRaw {
+    u32 sources_raw;
+    u32 modifiers_raw;
+    u32 ops_raw;
+    u32 scales_raw;
+    explicit operator Pica::TexturingRegs::TevStageConfig() const noexcept {
+        Pica::TexturingRegs::TevStageConfig stage;
+        stage.sources_raw = sources_raw;
+        stage.modifiers_raw = modifiers_raw;
+        stage.ops_raw = ops_raw;
+        stage.const_color = 0;
+        stage.scales_raw = scales_raw;
+        return stage;
+    }
+};
+
+struct PicaFSConfigState {
+    Pica::FramebufferRegs::CompareFunc alpha_test_func;
+    Pica::RasterizerRegs::ScissorMode scissor_test_mode;
+    Pica::TexturingRegs::TextureConfig::TextureType texture0_type;
+    bool texture2_use_coord1;
+    std::array<TevStageConfigRaw, 6> tev_stages;
+    u8 combiner_buffer_input;
+
+    Pica::RasterizerRegs::DepthBuffering depthmap_enable;
+    Pica::TexturingRegs::FogMode fog_mode;
+    bool fog_flip;
+    bool alphablend_enable;
+    Pica::FramebufferRegs::LogicOp logic_op;
+
+    struct {
+        struct {
+            unsigned num;
+            bool directional;
+            bool two_sided_diffuse;
+            bool dist_atten_enable;
+            bool spot_atten_enable;
+            bool geometric_factor_0;
+            bool geometric_factor_1;
+            bool shadow_enable;
+        } light[8];
+
+        bool enable;
+        unsigned src_num;
+        Pica::LightingRegs::LightingBumpMode bump_mode;
+        unsigned bump_selector;
+        bool bump_renorm;
+        bool clamp_highlights;
+
+        Pica::LightingRegs::LightingConfig config;
+        bool enable_primary_alpha;
+        bool enable_secondary_alpha;
+
+        bool enable_shadow;
+        bool shadow_primary;
+        bool shadow_secondary;
+        bool shadow_invert;
+        bool shadow_alpha;
+        unsigned shadow_selector;
+
+        struct {
+            bool enable;
+            bool abs_input;
+            Pica::LightingRegs::LightingLutInput type;
+            float scale;
+        } lut_d0, lut_d1, lut_sp, lut_fr, lut_rr, lut_rg, lut_rb;
+    } lighting;
+
+    struct {
+        bool enable;
+        u32 coord;
+        Pica::TexturingRegs::ProcTexClamp u_clamp, v_clamp;
+        Pica::TexturingRegs::ProcTexCombiner color_combiner, alpha_combiner;
+        bool separate_alpha;
+        bool noise_enable;
+        Pica::TexturingRegs::ProcTexShift u_shift, v_shift;
+        u32 lut_width;
+        u32 lut_offset0;
+        u32 lut_offset1;
+        u32 lut_offset2;
+        u32 lut_offset3;
+        u32 lod_min;
+        u32 lod_max;
+        Pica::TexturingRegs::ProcTexFilter lut_filter;
+    } proctex;
+
+    bool shadow_rendering;
+    bool shadow_texture_orthographic;
+};
+
+/**
+ * This struct contains all state used to generate the GLSL fragment shader that emulates the
+ * current Pica register configuration. This struct is used as a cache key for generated GLSL shader
+ * programs. The functions in gl_shader_gen.cpp should retrieve state from this struct only, not by
+ * directly accessing Pica registers. This should reduce the risk of bugs in shader generation where
+ * Pica state is not being captured in the shader cache key, thereby resulting in (what should be)
+ * two separate shaders sharing the same key.
+ */
+struct PicaFSConfig : Common::HashableStruct<PicaFSConfigState> {
+
+    /// Construct a PicaFSConfig with the given Pica register configuration.
+    static PicaFSConfig BuildFromRegs(const Pica::Regs& regs);
+
+    bool TevStageUpdatesCombinerBufferColor(unsigned stage_index) const {
+        return (stage_index < 4) && (state.combiner_buffer_input & (1 << stage_index));
+    }
+
+    bool TevStageUpdatesCombinerBufferAlpha(unsigned stage_index) const {
+        return (stage_index < 4) && ((state.combiner_buffer_input >> 4) & (1 << stage_index));
+    }
+};
+
+/**
+ * This struct contains common information to identify a GL vertex/geometry shader generated from
+ * PICA vertex/geometry shader.
+ */
+struct PicaShaderConfigCommon {
+    void Init(const Pica::ShaderRegs& regs, Pica::Shader::ShaderSetup& setup);
+
+    u64 program_hash;
+    u64 swizzle_hash;
+    u32 main_offset;
+    bool sanitize_mul;
+
+    u32 num_outputs;
+
+    // output_map[output register index] -> output attribute index
+    std::array<u32, 16> output_map;
+};
+
+/**
+ * This struct contains information to identify a GL vertex shader generated from PICA vertex
+ * shader.
+ */
+struct PicaVSConfig : Common::HashableStruct<PicaShaderConfigCommon> {
+    explicit PicaVSConfig(const Pica::ShaderRegs& regs, Pica::Shader::ShaderSetup& setup) {
+        state.Init(regs, setup);
+    }
+    explicit PicaVSConfig(const PicaShaderConfigCommon& conf) {
+        state = conf;
+    }
+};
+
+struct PicaGSConfigCommonRaw {
+    void Init(const Pica::Regs& regs);
+
+    u32 vs_output_attributes;
+    u32 gs_output_attributes;
+
+    struct SemanticMap {
+        u32 attribute_index;
+        u32 component_index;
+    };
+
+    // semantic_maps[semantic name] -> GS output attribute index + component index
+    std::array<SemanticMap, 24> semantic_maps;
+};
+
+/**
+ * This struct contains information to identify a GL geometry shader generated from PICA no-geometry
+ * shader pipeline
+ */
+struct PicaFixedGSConfig : Common::HashableStruct<PicaGSConfigCommonRaw> {
+    explicit PicaFixedGSConfig(const Pica::Regs& regs) {
+        state.Init(regs);
+    }
+};
+
+/**
+ * Generates the GLSL vertex shader program source code that accepts vertices from software shader
+ * and directly passes them to the fragment shader.
+ * @param separable_shader generates shader that can be used for separate shader object
+ * @returns String of the shader source code
+ */
+std::string GenerateTrivialVertexShader();
+
+/**
+ * Generates the GLSL vertex shader program source code for the given VS program
+ * @returns String of the shader source code; boost::none on failure
+ */
+std::optional<std::string> GenerateVertexShader(
+    const Pica::Shader::ShaderSetup& setup, const PicaVSConfig& config);
+
+/**
+ * Generates the GLSL fixed geometry shader program source code for non-GS PICA pipeline
+ * @returns String of the shader source code
+ */
+std::string GenerateFixedGeometryShader(const PicaFixedGSConfig& config);
+
+/**
+ * Generates the GLSL fragment shader program source code for the current Pica state
+ * @param config ShaderCacheKey object generated for the current Pica state, used for the shader
+ *               configuration (NOTE: Use state in this struct only, not the Pica registers!)
+ * @param separable_shader generates shader that can be used for separate shader object
+ * @returns String of the shader source code
+ */
+std::string GenerateFragmentShader(const PicaFSConfig& config);
+
+} // namespace Vulkan
+
+namespace std {
+template <>
+struct hash<Vulkan::PicaFSConfig> {
+    std::size_t operator()(const Vulkan::PicaFSConfig& k) const noexcept {
+        return k.Hash();
+    }
+};
+
+template <>
+struct hash<Vulkan::PicaVSConfig> {
+    std::size_t operator()(const Vulkan::PicaVSConfig& k) const noexcept {
+        return k.Hash();
+    }
+};
+
+template <>
+struct hash<Vulkan::PicaFixedGSConfig> {
+    std::size_t operator()(const Vulkan::PicaFixedGSConfig& k) const noexcept {
+        return k.Hash();
+    }
+};
+} // namespace std

src/video_core/renderer_vulkan/vk_stream_buffer.cpp

@@ -0,0 +1,194 @@
+// Copyright 2022 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#define VULKAN_HPP_NO_CONSTRUCTORS
+#include <algorithm>
+#include "common/alignment.h"
+#include "common/assert.h"
+#include "common/logging/log.h"
+#include "video_core/renderer_vulkan/vk_stream_buffer.h"
+#include "video_core/renderer_vulkan/vk_task_scheduler.h"
+#include "video_core/renderer_vulkan/vk_instance.h"
+
+namespace Vulkan {
+
+inline auto ToVkAccessStageFlags(vk::BufferUsageFlagBits usage) {
+    std::pair<vk::AccessFlags, vk::PipelineStageFlags> result{};
+    switch (usage) {
+    case vk::BufferUsageFlagBits::eVertexBuffer:
+        result = std::make_pair(vk::AccessFlagBits::eVertexAttributeRead,
+                                vk::PipelineStageFlagBits::eVertexInput);
+        break;
+    case vk::BufferUsageFlagBits::eIndexBuffer:
+        result = std::make_pair(vk::AccessFlagBits::eIndexRead,
+                                vk::PipelineStageFlagBits::eVertexInput);
+    case vk::BufferUsageFlagBits::eUniformBuffer:
+        result = std::make_pair(vk::AccessFlagBits::eUniformRead,
+                                vk::PipelineStageFlagBits::eVertexShader |
+                                vk::PipelineStageFlagBits::eGeometryShader |
+                                vk::PipelineStageFlagBits::eFragmentShader);
+    case vk::BufferUsageFlagBits::eUniformTexelBuffer:
+        result = std::make_pair(vk::AccessFlagBits::eShaderRead,
+                                vk::PipelineStageFlagBits::eFragmentShader);
+        break;
+    default:
+        LOG_CRITICAL(Render_Vulkan, "Unknown usage flag {}", usage);
+    }
+
+    return result;
+}
+
+StagingBuffer::StagingBuffer(const Instance& instance, u32 size, vk::BufferUsageFlags usage)
+    : instance{instance} {
+    const vk::BufferCreateInfo buffer_info = {
+        .size = size,
+        .usage = usage
+    };
+
+    const VmaAllocationCreateInfo alloc_create_info = {
+        .flags = VMA_ALLOCATION_CREATE_HOST_ACCESS_SEQUENTIAL_WRITE_BIT |
+                VMA_ALLOCATION_CREATE_MAPPED_BIT,
+        .usage = VMA_MEMORY_USAGE_AUTO_PREFER_HOST
+    };
+
+    VkBuffer unsafe_buffer = VK_NULL_HANDLE;
+    VkBufferCreateInfo unsafe_buffer_info = static_cast<VkBufferCreateInfo>(buffer_info);
+    VmaAllocationInfo alloc_info;
+    VmaAllocator allocator = instance.GetAllocator();
+
+    vmaCreateBuffer(allocator, &unsafe_buffer_info, &alloc_create_info,
+                    &unsafe_buffer, &allocation, &alloc_info);
+
+    buffer = vk::Buffer{unsafe_buffer};
+    mapped = std::span{reinterpret_cast<std::byte*>(alloc_info.pMappedData), size};
+}
+
+StagingBuffer::~StagingBuffer() {
+    vmaDestroyBuffer(instance.GetAllocator(), static_cast<VkBuffer>(buffer), allocation);
+}
+
+StreamBuffer::StreamBuffer(const Instance& instance, TaskScheduler& scheduler,
+                           u32 size, vk::BufferUsageFlagBits usage, std::span<const vk::Format> view_formats)
+    : instance{instance}, scheduler{scheduler}, staging{instance, size, vk::BufferUsageFlagBits::eTransferSrc},
+      usage{usage}, total_size{size} {
+
+    const vk::BufferCreateInfo buffer_info = {
+        .size = total_size,
+        .usage = usage | vk::BufferUsageFlagBits::eTransferDst
+    };
+
+    const VmaAllocationCreateInfo alloc_create_info = {
+        .usage = VMA_MEMORY_USAGE_AUTO_PREFER_DEVICE
+    };
+
+    VkBuffer unsafe_buffer = VK_NULL_HANDLE;
+    VkBufferCreateInfo unsafe_buffer_info = static_cast<VkBufferCreateInfo>(buffer_info);
+    VmaAllocationInfo alloc_info;
+    VmaAllocator allocator = instance.GetAllocator();
+
+    vmaCreateBuffer(allocator, &unsafe_buffer_info, &alloc_create_info,
+                    &unsafe_buffer, &allocation, &alloc_info);
+
+    buffer = vk::Buffer{unsafe_buffer};
+
+    ASSERT(view_formats.size() < MAX_BUFFER_VIEWS);
+
+    vk::Device device = instance.GetDevice();
+    for (std::size_t i = 0; i < view_formats.size(); i++) {
+        const vk::BufferViewCreateInfo view_info = {
+            .buffer = buffer,
+            .format = view_formats[i],
+            .offset = 0,
+            .range = total_size
+        };
+
+        views[i] = device.createBufferView(view_info);
+    }
+
+    view_count = view_formats.size();
+    bucket_size = size / SCHEDULER_COMMAND_COUNT;
+}
+
+StreamBuffer::~StreamBuffer() {
+    if (buffer) {
+        vk::Device device = instance.GetDevice();
+        vmaDestroyBuffer(instance.GetAllocator(), static_cast<VkBuffer>(buffer), allocation);
+        for (std::size_t i = 0; i < view_count; i++) {
+            device.destroyBufferView(views[i]);
+        }
+    }
+}
+
+std::tuple<u8*, u32, bool> StreamBuffer::Map(u32 size, u32 alignment) {
+    ASSERT(size <= total_size && alignment <= total_size);
+
+    const u32 current_bucket = scheduler.GetCurrentSlotIndex();
+    auto& bucket = buckets[current_bucket];
+    if (bucket.offset + size > bucket_size) {
+        UNREACHABLE();
+    }
+
+    bool invalidate = false;
+    if (bucket.invalid) {
+        invalidate = true;
+        bucket.invalid = false;
+    }
+
+    const u32 buffer_offset = current_bucket * bucket_size + bucket.offset;
+    u8* mapped = reinterpret_cast<u8*>(staging.mapped.data() + buffer_offset);
+    return std::make_tuple(mapped, buffer_offset, invalidate);
+
+}
+
+void StreamBuffer::Commit(u32 size) {
+    buckets[scheduler.GetCurrentSlotIndex()].offset += size;
+}
+
+void StreamBuffer::Flush() {
+    const u32 current_bucket = scheduler.GetCurrentSlotIndex();
+    const u32 flush_size = buckets[current_bucket].offset;
+    ASSERT(flush_size <= bucket_size);
+
+    if (flush_size > 0) {
+        vk::CommandBuffer command_buffer = scheduler.GetUploadCommandBuffer();
+        VmaAllocator allocator = instance.GetAllocator();
+
+        const u32 flush_start = current_bucket * bucket_size;
+        const vk::BufferCopy copy_region = {
+            .srcOffset = flush_start,
+            .dstOffset = flush_start,
+            .size = flush_size
+        };
+
+        vmaFlushAllocation(allocator, allocation, flush_start, flush_size);
+        command_buffer.copyBuffer(staging.buffer, buffer, copy_region);
+
+        // Add pipeline barrier for the flushed region
+        auto [access_mask, stage_mask] = ToVkAccessStageFlags(usage);
+        const vk::BufferMemoryBarrier buffer_barrier = {
+            .srcAccessMask = vk::AccessFlagBits::eTransferWrite,
+            .dstAccessMask = access_mask,
+            .srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
+            .dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
+            .buffer = buffer,
+            .offset = flush_start,
+            .size = flush_size
+        };
+
+        command_buffer.pipelineBarrier(vk::PipelineStageFlagBits::eTransfer, stage_mask,
+                                       vk::DependencyFlagBits::eByRegion, {}, buffer_barrier, {});
+    }
+
+    // Reset the offset of the next bucket
+    const u32 next_bucket = (current_bucket + 1) % SCHEDULER_COMMAND_COUNT;
+    buckets[next_bucket].offset = 0;
+    buckets[next_bucket].invalid = true;
+}
+
+u32 StreamBuffer::GetBufferOffset() const {
+    const u32 current_bucket = scheduler.GetCurrentSlotIndex();
+    return current_bucket * bucket_size + buckets[current_bucket].offset;
+}
+
+} // namespace Vulkan

src/video_core/renderer_vulkan/vk_stream_buffer.h

@@ -0,0 +1,91 @@
+// Copyright 2022 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+#include <array>
+#include <map>
+#include <span>
+#include "common/assert.h"
+#include "video_core/renderer_vulkan/vk_common.h"
+
+namespace Vulkan {
+
+class Instance;
+class TaskScheduler;
+
+constexpr u32 MAX_BUFFER_VIEWS = 3;
+
+struct LockedRegion {
+    u32 size = 0;
+    u64 fence_counter = 0;
+};
+
+struct StagingBuffer {
+    StagingBuffer(const Instance& instance, u32 size, vk::BufferUsageFlags usage);
+    ~StagingBuffer();
+
+    const Instance& instance;
+    vk::Buffer buffer{};
+    VmaAllocation allocation{};
+    std::span<std::byte> mapped{};
+};
+
+class StreamBuffer {
+public:
+    StreamBuffer(const Instance& instance, TaskScheduler& scheduler,
+                  u32 size, vk::BufferUsageFlagBits usage, std::span<const vk::Format> views);
+    ~StreamBuffer();
+
+    std::tuple<u8*, u32, bool> Map(u32 size, u32 alignment = 0);
+
+    /// Commits size bytes from the currently mapped staging memory
+    void Commit(u32 size = 0);
+
+    /// Flushes staging memory to the GPU buffer
+    void Flush();
+
+    /// Returns the current buffer offset
+    u32 GetBufferOffset() const;
+
+    /// Returns the Vulkan buffer handle
+    vk::Buffer GetHandle() const {
+        return buffer;
+    }
+
+    /// Returns an immutable reference to the requested buffer view
+    const vk::BufferView& GetView(u32 index = 0) const {
+        ASSERT(index < view_count);
+        return views[index];
+    }
+
+private:
+    /// Invalidates the buffer offsets
+    void Invalidate();
+
+    /// Removes the lock on regions whose fence counter has been reached by the GPU
+    bool UnlockFreeRegions(u32 target_size);
+
+private:
+    struct Bucket {
+        bool invalid;
+        u32 fence_counter;
+        u32 offset;
+    };
+
+    const Instance& instance;
+    TaskScheduler& scheduler;
+    StagingBuffer staging;
+
+    vk::Buffer buffer{};
+    VmaAllocation allocation{};
+    vk::BufferUsageFlagBits usage;
+    u32 total_size = 0;
+    std::array<vk::BufferView, MAX_BUFFER_VIEWS> views{};
+    std::size_t view_count = 0;
+
+    u32 bucket_size = 0;
+    std::array<Bucket, SCHEDULER_COMMAND_COUNT> buckets{};
+};
+
+} // namespace Vulkan

src/video_core/renderer_vulkan/vk_swapchain.cpp

@@ -0,0 +1,232 @@
+// Copyright 2022 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#define VULKAN_HPP_NO_CONSTRUCTORS
+#include <algorithm>
+#include "common/logging/log.h"
+#include "video_core/renderer_vulkan/vk_swapchain.h"
+#include "video_core/renderer_vulkan/vk_instance.h"
+#include "video_core/renderer_vulkan/vk_renderpass_cache.h"
+
+namespace Vulkan {
+
+Swapchain::Swapchain(const Instance& instance, RenderpassCache& renderpass_cache)
+    : instance{instance}, renderpass_cache{renderpass_cache}, surface{instance.GetSurface()} {
+
+    // Set the surface format early for RenderpassCache to create the present renderpass
+    Configure(0, 0);
+    renderpass_cache.CreatePresentRenderpass(surface_format.format);
+}
+
+Swapchain::~Swapchain() {
+    vk::Device device = instance.GetDevice();
+    device.destroySwapchainKHR(swapchain);
+
+    for (auto& image : swapchain_images) {
+        device.destroyImageView(image.image_view);
+        device.destroyFramebuffer(image.framebuffer);
+    }
+}
+
+void Swapchain::Create(u32 width, u32 height, bool vsync_enabled) {
+    is_outdated = false;
+    is_suboptimal = false;
+
+    // Fetch information about the provided surface
+    Configure(width, height);
+
+    const std::array queue_family_indices = {
+        instance.GetGraphicsQueueFamilyIndex(),
+        instance.GetPresentQueueFamilyIndex(),
+    };
+
+    const bool exclusive = queue_family_indices[0] == queue_family_indices[1];
+    const u32 queue_family_indices_count = exclusive ? 1u : 2u;
+    const vk::SharingMode sharing_mode =
+            exclusive ? vk::SharingMode::eExclusive : vk::SharingMode::eConcurrent;
+    const vk::SwapchainCreateInfoKHR swapchain_info = {
+        .surface = surface,
+        .minImageCount = image_count,
+        .imageFormat = surface_format.format,
+        .imageColorSpace = surface_format.colorSpace,
+        .imageExtent = extent,
+        .imageArrayLayers = 1,
+        .imageUsage = vk::ImageUsageFlagBits::eColorAttachment,
+        .imageSharingMode = sharing_mode,
+        .queueFamilyIndexCount = queue_family_indices_count,
+        .pQueueFamilyIndices   = queue_family_indices.data(),
+        .preTransform = transform,
+        .presentMode = present_mode,
+        .clipped = true,
+        .oldSwapchain = swapchain
+    };
+
+    vk::Device device = instance.GetDevice();
+    vk::SwapchainKHR new_swapchain = device.createSwapchainKHR(swapchain_info);
+
+    // If an old swapchain exists, destroy it and move the new one to its place.
+    if (vk::SwapchainKHR old_swapchain = std::exchange(swapchain, new_swapchain); old_swapchain) {
+        device.destroySwapchainKHR(old_swapchain);
+    }
+
+    vk::RenderPass present_renderpass = renderpass_cache.GetPresentRenderpass();
+    auto images = device.getSwapchainImagesKHR(swapchain);
+
+    // Destroy the previous images
+    for (auto& image : swapchain_images) {
+        device.destroyImageView(image.image_view);
+        device.destroyFramebuffer(image.framebuffer);
+    }
+
+    swapchain_images.clear();
+    swapchain_images.resize(images.size());
+
+    std::ranges::transform(images, swapchain_images.begin(), [&](vk::Image image) -> Image {
+        const vk::ImageViewCreateInfo view_info = {
+            .image = image,
+            .viewType = vk::ImageViewType::e2D,
+            .format = surface_format.format,
+            .subresourceRange = {
+                .aspectMask = vk::ImageAspectFlagBits::eColor,
+                .baseMipLevel = 0,
+                .levelCount = 1,
+                .baseArrayLayer = 0,
+                .layerCount = 1
+            }
+        };
+
+        vk::ImageView image_view = device.createImageView(view_info);
+        const std::array attachments{image_view};
+
+        const vk::FramebufferCreateInfo framebuffer_info = {
+            .renderPass = present_renderpass,
+            .attachmentCount = 1,
+            .pAttachments = attachments.data(),
+            .width = extent.width,
+            .height = extent.height,
+            .layers = 1
+        };
+
+        vk::Framebuffer framebuffer = device.createFramebuffer(framebuffer_info);
+
+        return Image{
+            .image = image,
+            .image_view = image_view,
+            .framebuffer = framebuffer
+        };
+    });
+}
+
+// Wait for maximum of 1 second
+constexpr u64 ACQUIRE_TIMEOUT = 1000000000;
+
+void Swapchain::AcquireNextImage(vk::Semaphore signal_acquired) {
+    vk::Device device = instance.GetDevice();
+    vk::Result result = device.acquireNextImageKHR(swapchain, ACQUIRE_TIMEOUT, signal_acquired,
+                                                   VK_NULL_HANDLE, &current_image);
+    switch (result) {
+    case vk::Result::eSuccess:
+        break;
+    case vk::Result::eSuboptimalKHR:
+        is_suboptimal = true;
+        break;
+    case vk::Result::eErrorOutOfDateKHR:
+        is_outdated = true;
+        break;
+    default:
+        LOG_ERROR(Render_Vulkan, "vkAcquireNextImageKHR returned unknown result");
+        break;
+    }
+}
+
+void Swapchain::Present(vk::Semaphore wait_for_present) {
+    const vk::PresentInfoKHR present_info = {
+        .waitSemaphoreCount = 1,
+        .pWaitSemaphores = &wait_for_present,
+        .swapchainCount = 1,
+        .pSwapchains = &swapchain,
+        .pImageIndices = &current_image
+    };
+
+    vk::Queue present_queue = instance.GetPresentQueue();
+    vk::Result result = present_queue.presentKHR(present_info);
+
+    switch (result) {
+    case vk::Result::eSuccess:
+        break;
+    case vk::Result::eSuboptimalKHR:
+        LOG_DEBUG(Render_Vulkan, "Suboptimal swapchain");
+        break;
+    case vk::Result::eErrorOutOfDateKHR:
+        is_outdated = true;
+        break;
+    default:
+        LOG_CRITICAL(Render_Vulkan, "Swapchain presentation failed");
+        break;
+    }
+
+    current_frame = (current_frame + 1) % swapchain_images.size();
+}
+
+void Swapchain::Configure(u32 width, u32 height) {
+    vk::PhysicalDevice physical = instance.GetPhysicalDevice();
+
+    // Choose surface format
+    auto formats = physical.getSurfaceFormatsKHR(surface);
+    surface_format = formats[0];
+
+    if (formats.size() == 1 && formats[0].format == vk::Format::eUndefined) {
+        surface_format.format = vk::Format::eB8G8R8A8Unorm;
+    } else {
+        auto it = std::ranges::find_if(formats, [](vk::SurfaceFormatKHR format) -> bool {
+            return format.colorSpace == vk::ColorSpaceKHR::eSrgbNonlinear &&
+                format.format == vk::Format::eB8G8R8A8Unorm;
+        });
+
+        if (it == formats.end()) {
+            LOG_CRITICAL(Render_Vulkan, "Unable to find required swapchain format!");
+        } else {
+            surface_format = *it;
+        }
+    }
+
+    // Checks if a particular mode is supported, if it is, returns that mode.
+    auto modes = physical.getSurfacePresentModesKHR(surface);
+
+    // FIFO is guaranteed by the Vulkan standard to be available
+    present_mode = vk::PresentModeKHR::eFifo;
+    auto iter = std::ranges::find_if(modes, [](vk::PresentModeKHR mode) {
+        return vk::PresentModeKHR::eMailbox == mode;
+    });
+
+    // Prefer Mailbox if present for lowest latency
+    if (iter != modes.end()) {
+        present_mode = vk::PresentModeKHR::eMailbox;
+    }
+
+    // Query surface extent
+    auto capabilities = physical.getSurfaceCapabilitiesKHR(surface);
+    extent = capabilities.currentExtent;
+
+    if (capabilities.currentExtent.width == std::numeric_limits<u32>::max()) {
+        extent.width = std::clamp(width, capabilities.minImageExtent.width,
+                                          capabilities.maxImageExtent.width);
+        extent.height = std::clamp(height, capabilities.minImageExtent.height,
+                                           capabilities.maxImageExtent.height);
+    }
+
+    // Select number of images in swap chain, we prefer one buffer in the background to work on
+    image_count = capabilities.minImageCount + 1;
+    if (capabilities.maxImageCount > 0) {
+        image_count = std::min(image_count, capabilities.maxImageCount);
+    }
+
+    // Prefer identity transform if possible
+    transform = vk::SurfaceTransformFlagBitsKHR::eIdentity;
+    if (!(capabilities.supportedTransforms & transform)) {
+        transform = capabilities.currentTransform;
+    }
+}
+
+} // namespace Vulkan

src/video_core/renderer_vulkan/vk_swapchain.h

@@ -0,0 +1,91 @@
+// Copyright 2022 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <vector>
+#include "common/common_types.h"
+#include "video_core/renderer_vulkan/vk_common.h"
+
+namespace Vulkan {
+
+class Instance;
+class RenderpassCache;
+
+class Swapchain {
+public:
+    Swapchain(const Instance& instance, RenderpassCache& renderpass_cache);
+    ~Swapchain();
+
+    /// Creates (or recreates) the swapchain with a given size.
+    void Create(u32 width, u32 height, bool vsync_enabled);
+
+    /// Acquires the next image in the swapchain.
+    void AcquireNextImage(vk::Semaphore signal_acquired);
+
+    /// Presents the current image and move to the next one
+    void Present(vk::Semaphore wait_for_present);
+
+    /// Returns current swapchain state
+    vk::Extent2D GetExtent() const {
+        return extent;
+    }
+
+    /// Returns the swapchain surface
+    vk::SurfaceKHR GetSurface() const {
+        return surface;
+    }
+
+    /// Returns the current framebuffe
+    vk::Framebuffer GetFramebuffer() const {
+        return swapchain_images[current_image].framebuffer;
+    }
+
+    /// Returns the swapchain format
+    vk::SurfaceFormatKHR GetSurfaceFormat() const {
+        return surface_format;
+    }
+
+    /// Returns the Vulkan swapchain handle
+    vk::SwapchainKHR GetHandle() const {
+        return swapchain;
+    }
+
+    /// Returns true when the swapchain should be recreated
+    bool NeedsRecreation() const {
+        return is_suboptimal || is_outdated;
+    }
+
+private:
+    void Configure(u32 width, u32 height);
+
+private:
+    const Instance& instance;
+    RenderpassCache& renderpass_cache;
+    vk::SwapchainKHR swapchain{};
+    vk::SurfaceKHR surface{};
+
+    // Swapchain properties
+    vk::SurfaceFormatKHR surface_format;
+    vk::PresentModeKHR present_mode;
+    vk::Extent2D extent;
+    vk::SurfaceTransformFlagBitsKHR transform;
+    u32 image_count;
+
+    struct Image {
+        vk::Image image;
+        vk::ImageView image_view;
+        vk::Framebuffer framebuffer;
+    };
+
+    // Swapchain state
+    std::vector<Image> swapchain_images;
+    u32 current_image = 0;
+    u32 current_frame = 0;
+    bool vsync_enabled = false;
+    bool is_outdated = true;
+    bool is_suboptimal = true;
+};
+
+} // namespace Vulkan

src/video_core/renderer_vulkan/vk_task_scheduler.cpp

@@ -0,0 +1,252 @@
+// Copyright 2022 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#define VULKAN_HPP_NO_CONSTRUCTORS
+#include "common/assert.h"
+#include "common/logging/log.h"
+#include "video_core/renderer_vulkan/vk_task_scheduler.h"
+#include "video_core/renderer_vulkan/vk_instance.h"
+
+namespace Vulkan {
+
+TaskScheduler::TaskScheduler(const Instance& instance) : instance{instance} {
+    vk::Device device = instance.GetDevice();
+    const vk::CommandPoolCreateInfo command_pool_info = {
+        .flags = vk::CommandPoolCreateFlagBits::eResetCommandBuffer,
+        .queueFamilyIndex = instance.GetGraphicsQueueFamilyIndex()
+    };
+
+    command_pool = device.createCommandPool(command_pool_info);
+
+    // If supported, prefer timeline semaphores over binary ones
+    if (instance.IsTimelineSemaphoreSupported()) {
+        const vk::StructureChain timeline_info = {
+            vk::SemaphoreCreateInfo{},
+            vk::SemaphoreTypeCreateInfo{
+                .semaphoreType = vk::SemaphoreType::eTimeline,
+                .initialValue = 0
+            }
+        };
+
+        timeline = device.createSemaphore(timeline_info.get());
+    }
+
+    constexpr std::array pool_sizes = {
+        vk::DescriptorPoolSize{vk::DescriptorType::eUniformBuffer, 1024},
+        vk::DescriptorPoolSize{vk::DescriptorType::eUniformBufferDynamic, 1024},
+        vk::DescriptorPoolSize{vk::DescriptorType::eSampledImage, 2048},
+        vk::DescriptorPoolSize{vk::DescriptorType::eCombinedImageSampler, 512},
+        vk::DescriptorPoolSize{vk::DescriptorType::eSampler, 2048},
+        vk::DescriptorPoolSize{vk::DescriptorType::eUniformTexelBuffer, 1024}
+    };
+
+    const vk::DescriptorPoolCreateInfo descriptor_pool_info = {
+        .maxSets = 2048,
+        .poolSizeCount = static_cast<u32>(pool_sizes.size()),
+        .pPoolSizes = pool_sizes.data()
+    };
+
+    const vk::CommandBufferAllocateInfo buffer_info = {
+        .commandPool = command_pool,
+        .level = vk::CommandBufferLevel::ePrimary,
+        .commandBufferCount = 2 * SCHEDULER_COMMAND_COUNT
+    };
+
+    const auto command_buffers = device.allocateCommandBuffers(buffer_info);
+    for (std::size_t i = 0; i < commands.size(); i++) {
+        commands[i] = ExecutionSlot{
+            .image_acquired = device.createSemaphore({}),
+            .present_ready = device.createSemaphore({}),
+            .fence = device.createFence({}),
+            .descriptor_pool = device.createDescriptorPool(descriptor_pool_info),
+            .render_command_buffer = command_buffers[2 * i],
+            .upload_command_buffer = command_buffers[2 * i + 1],
+        };
+    }
+
+    const vk::CommandBufferBeginInfo begin_info = {
+        .flags = vk::CommandBufferUsageFlagBits::eOneTimeSubmit
+    };
+
+    // Begin first command
+    auto& command = commands[current_command];
+    command.render_command_buffer.begin(begin_info);
+    command.fence_counter = next_fence_counter++;
+}
+
+TaskScheduler::~TaskScheduler() {
+    vk::Device device = instance.GetDevice();
+    device.waitIdle();
+
+    if (timeline) {
+        device.destroySemaphore(timeline);
+    }
+
+    for (const auto& command : commands) {
+        device.destroyFence(command.fence);
+        device.destroySemaphore(command.image_acquired);
+        device.destroySemaphore(command.present_ready);
+        device.destroyDescriptorPool(command.descriptor_pool);
+    }
+
+    device.destroyCommandPool(command_pool);
+}
+
+void TaskScheduler::Synchronize(u32 slot) {
+    const auto& command = commands[slot];
+    vk::Device device = instance.GetDevice();
+
+    u32 completed_counter = completed_fence_counter;
+    if (instance.IsTimelineSemaphoreSupported()) {
+        completed_counter = device.getSemaphoreCounterValue(timeline);
+    }
+
+    if (command.fence_counter > completed_counter) {
+        if (instance.IsTimelineSemaphoreSupported()) {
+            const vk::SemaphoreWaitInfo wait_info = {
+                .semaphoreCount = 1,
+                .pSemaphores = &timeline,
+                .pValues = &command.fence_counter
+            };
+
+            if (device.waitSemaphores(wait_info, UINT64_MAX) != vk::Result::eSuccess) {
+                LOG_ERROR(Render_Vulkan, "Waiting for fence counter {} failed!", command.fence_counter);
+                UNREACHABLE();
+            }
+
+        } else if (device.waitForFences(command.fence, true, UINT64_MAX) != vk::Result::eSuccess) {
+            LOG_ERROR(Render_Vulkan, "Waiting for fence counter {} failed!", command.fence_counter);
+            UNREACHABLE();
+        }
+    }
+
+    completed_fence_counter = command.fence_counter;
+    device.resetFences(command.fence);
+    device.resetDescriptorPool(command.descriptor_pool);
+}
+
+void TaskScheduler::Submit(SubmitMode mode) {
+    const auto& command = commands[current_command];
+    command.render_command_buffer.end();
+    if (command.use_upload_buffer) {
+        command.upload_command_buffer.end();
+    }
+
+    u32 command_buffer_count = 0;
+    std::array<vk::CommandBuffer, 2> command_buffers;
+
+    if (command.use_upload_buffer) {
+        command_buffers[command_buffer_count++] = command.upload_command_buffer;
+    }
+
+    command_buffers[command_buffer_count++] = command.render_command_buffer;
+
+    const bool swapchain_sync = True(mode & SubmitMode::SwapchainSynced);
+    if (instance.IsTimelineSemaphoreSupported()) {
+        const u32 wait_semaphore_count = swapchain_sync ? 2u : 1u;
+        const std::array wait_values{command.fence_counter - 1, 1ul};
+        const std::array wait_semaphores{timeline, command.image_acquired};
+
+        const u32 signal_semaphore_count = swapchain_sync ? 2u : 1u;
+        const std::array signal_values{command.fence_counter, 0ul};
+        const std::array signal_semaphores{timeline, command.present_ready};
+
+        const vk::TimelineSemaphoreSubmitInfoKHR timeline_si = {
+            .waitSemaphoreValueCount = wait_semaphore_count,
+            .pWaitSemaphoreValues = wait_values.data(),
+            .signalSemaphoreValueCount = signal_semaphore_count,
+            .pSignalSemaphoreValues = signal_values.data()
+        };
+
+        const std::array<vk::PipelineStageFlags, 2> wait_stage_masks = {
+            vk::PipelineStageFlagBits::eAllCommands,
+            vk::PipelineStageFlagBits::eColorAttachmentOutput,
+        };
+
+        const vk::SubmitInfo submit_info = {
+            .pNext = &timeline_si,
+            .waitSemaphoreCount = wait_semaphore_count,
+            .pWaitSemaphores = wait_semaphores.data(),
+            .pWaitDstStageMask = wait_stage_masks.data(),
+            .commandBufferCount = command_buffer_count,
+            .pCommandBuffers = command_buffers.data(),
+            .signalSemaphoreCount = signal_semaphore_count,
+            .pSignalSemaphores = signal_semaphores.data(),
+        };
+
+        vk::Queue queue = instance.GetGraphicsQueue();
+        queue.submit(submit_info);
+
+    } else {
+        const u32 signal_semaphore_count = swapchain_sync ? 1u : 0u;
+        const u32 wait_semaphore_count = swapchain_sync ? 1u : 0u;
+        const vk::PipelineStageFlags wait_stage_masks =
+                vk::PipelineStageFlagBits::eColorAttachmentOutput;
+
+        const vk::SubmitInfo submit_info = {
+            .waitSemaphoreCount = wait_semaphore_count,
+            .pWaitSemaphores = &command.image_acquired,
+            .pWaitDstStageMask = &wait_stage_masks,
+            .commandBufferCount = command_buffer_count,
+            .pCommandBuffers = command_buffers.data(),
+            .signalSemaphoreCount = signal_semaphore_count,
+            .pSignalSemaphores = &command.present_ready,
+        };
+
+        vk::Queue queue = instance.GetGraphicsQueue();
+        queue.submit(submit_info, command.fence);
+    }
+
+    // Block host until the GPU catches up
+    if (True(mode & SubmitMode::Flush)) {
+        Synchronize(current_command);
+    }
+
+    // Switch to next cmdbuffer.
+    if (False(mode & SubmitMode::Shutdown)) {
+        SwitchSlot();
+    }
+}
+
+u64 TaskScheduler::GetFenceCounter() const {
+    vk::Device device = instance.GetDevice();
+    if (instance.IsTimelineSemaphoreSupported()) {
+        return device.getSemaphoreCounterValue(timeline);
+    }
+
+    return completed_fence_counter;
+}
+
+vk::CommandBuffer TaskScheduler::GetUploadCommandBuffer() {
+    auto& command = commands[current_command];
+    if (!command.use_upload_buffer) {
+        const vk::CommandBufferBeginInfo begin_info = {
+            .flags = vk::CommandBufferUsageFlagBits::eOneTimeSubmit
+        };
+
+        command.upload_command_buffer.begin(begin_info);
+        command.use_upload_buffer = true;
+    }
+
+    return command.upload_command_buffer;
+}
+
+void TaskScheduler::SwitchSlot() {
+    current_command = (current_command + 1) % SCHEDULER_COMMAND_COUNT;
+    auto& command = commands[current_command];
+
+    // Wait for the GPU to finish with all resources for this command.
+    Synchronize(current_command);
+
+    const vk::CommandBufferBeginInfo begin_info = {
+        .flags = vk::CommandBufferUsageFlagBits::eOneTimeSubmit
+    };
+
+    // Begin the next command buffer.
+    command.render_command_buffer.begin(begin_info);
+    command.fence_counter = next_fence_counter++;
+    command.use_upload_buffer = false;
+}
+
+}  // namespace Vulkan

src/video_core/renderer_vulkan/vk_task_scheduler.h

@@ -0,0 +1,97 @@
+// Copyright 2022 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <memory>
+#include <array>
+#include <functional>
+#include "common/common_types.h"
+#include "common/common_funcs.h"
+#include "video_core/renderer_vulkan/vk_common.h"
+
+namespace Vulkan {
+
+class Buffer;
+class Instance;
+
+enum class SubmitMode : u8 {
+    SwapchainSynced = 1 << 0, ///< Synchronizes command buffer execution with the swapchain
+    Flush = 1 << 1, ///< Causes a GPU command flush, useful for texture downloads
+    Shutdown = 1 << 2 ///< Submits all current commands without starting a new command buffer
+};
+
+DECLARE_ENUM_FLAG_OPERATORS(SubmitMode);
+
+class TaskScheduler {
+public:
+    TaskScheduler(const Instance& instance);
+    ~TaskScheduler();
+
+    /// Blocks the host until the current command completes execution
+    void Synchronize(u32 slot);
+
+    /// Submits the current command to the graphics queue
+    void Submit(SubmitMode mode);
+
+    /// Returns the last completed fence counter
+    u64 GetFenceCounter() const;
+
+    /// Returns the command buffer used for early upload operations.
+    vk::CommandBuffer GetUploadCommandBuffer();
+
+    /// Returns the command buffer used for rendering
+    vk::CommandBuffer GetRenderCommandBuffer() const {
+        return commands[current_command].render_command_buffer;
+    }
+
+    /// Returns the current descriptor pool
+    vk::DescriptorPool GetDescriptorPool() const {
+        return commands[current_command].descriptor_pool;
+    }
+
+    /// Returns the index of the current command slot
+    u32 GetCurrentSlotIndex() const {
+        return current_command;
+    }
+
+    u64 GetHostFenceCounter() const {
+        return next_fence_counter - 1;
+    }
+
+    vk::Semaphore GetImageAcquiredSemaphore() const {
+        return commands[current_command].image_acquired;
+    }
+
+    vk::Semaphore GetPresentReadySemaphore() const {
+        return commands[current_command].present_ready;
+    }
+
+private:
+    /// Activates the next command slot and optionally waits for its completion
+    void SwitchSlot();
+
+private:
+    const Instance& instance;
+    u64 next_fence_counter = 1;
+    u64 completed_fence_counter = 0;
+
+    struct ExecutionSlot {
+        bool use_upload_buffer = false;
+        u64 fence_counter = 0;
+        vk::Semaphore image_acquired;
+        vk::Semaphore present_ready;
+        vk::Fence fence;
+        vk::DescriptorPool descriptor_pool;
+        vk::CommandBuffer render_command_buffer;
+        vk::CommandBuffer upload_command_buffer;
+    };
+
+    vk::CommandPool command_pool{};
+    vk::Semaphore timeline{};
+    std::array<ExecutionSlot, SCHEDULER_COMMAND_COUNT> commands{};
+    u32 current_command = 0;
+};
+
+}  // namespace Vulkan

src/video_core/renderer_vulkan/vk_texture_runtime.cpp

@@ -0,0 +1,705 @@
+// Copyright 2022 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#define VULKAN_HPP_NO_CONSTRUCTORS
+#include "video_core/rasterizer_cache/utils.h"
+#include "video_core/renderer_vulkan/vk_instance.h"
+#include "video_core/renderer_vulkan/vk_renderpass_cache.h"
+#include "video_core/renderer_vulkan/vk_task_scheduler.h"
+#include "video_core/renderer_vulkan/vk_texture_runtime.h"
+
+namespace Vulkan {
+
+vk::Format ToVkFormat(VideoCore::PixelFormat format) {
+    switch (format) {
+    case VideoCore::PixelFormat::RGBA8:
+        return vk::Format::eR8G8B8A8Unorm;
+    case VideoCore::PixelFormat::RGB8:
+        return vk::Format::eR8G8B8Unorm;
+    case VideoCore::PixelFormat::RGB5A1:
+        return vk::Format::eR5G5B5A1UnormPack16;
+    case VideoCore::PixelFormat::RGB565:
+        return vk::Format::eR5G6B5UnormPack16;
+    case VideoCore::PixelFormat::RGBA4:
+        return vk::Format::eR4G4B4A4UnormPack16;
+    case VideoCore::PixelFormat::D16:
+        return vk::Format::eD16Unorm;
+    case VideoCore::PixelFormat::D24:
+        return vk::Format::eX8D24UnormPack32;
+    case VideoCore::PixelFormat::D24S8:
+        return vk::Format::eD24UnormS8Uint;
+    case VideoCore::PixelFormat::Invalid:
+        LOG_ERROR(Render_Vulkan, "Unknown texture format {}!", format);
+        return vk::Format::eUndefined;
+    default:
+        // Use default case for the texture formats
+        return vk::Format::eR8G8B8A8Unorm;
+    }
+}
+
+vk::ImageAspectFlags ToVkAspect(VideoCore::SurfaceType type) {
+    switch (type) {
+    case VideoCore::SurfaceType::Color:
+    case VideoCore::SurfaceType::Texture:
+    case VideoCore::SurfaceType::Fill:
+        return vk::ImageAspectFlagBits::eColor;
+    case VideoCore::SurfaceType::Depth:
+        return vk::ImageAspectFlagBits::eDepth;
+    case VideoCore::SurfaceType::DepthStencil:
+        return vk::ImageAspectFlagBits::eDepth | vk::ImageAspectFlagBits::eStencil;
+    default:
+        UNREACHABLE_MSG("Invalid surface type!");
+    }
+
+    return vk::ImageAspectFlagBits::eColor;
+}
+
+vk::FormatFeatureFlagBits ToVkFormatFeatures(VideoCore::SurfaceType type) {
+    switch (type) {
+    case VideoCore::SurfaceType::Color:
+    case VideoCore::SurfaceType::Texture:
+    case VideoCore::SurfaceType::Fill:
+        return vk::FormatFeatureFlagBits::eColorAttachment;
+    case VideoCore::SurfaceType::Depth:
+    case VideoCore::SurfaceType::DepthStencil:
+        return vk::FormatFeatureFlagBits::eDepthStencilAttachment;
+    default:
+        UNREACHABLE_MSG("Invalid surface type!");
+    }
+
+    return vk::FormatFeatureFlagBits::eColorAttachment;
+}
+
+constexpr u32 STAGING_BUFFER_SIZE = 16 * 1024 * 1024;
+
+TextureRuntime::TextureRuntime(const Instance& instance, TaskScheduler& scheduler,
+                               RenderpassCache& renderpass_cache)
+    : instance{instance}, scheduler{scheduler}, renderpass_cache{renderpass_cache} {
+
+    for (auto& buffer : staging_buffers) {
+        buffer = std::make_unique<StagingBuffer>(instance, STAGING_BUFFER_SIZE,
+                                                 vk::BufferUsageFlagBits::eTransferSrc |
+                                                 vk::BufferUsageFlagBits::eTransferDst);
+    }
+}
+
+TextureRuntime::~TextureRuntime() {
+    VmaAllocator allocator = instance.GetAllocator();
+    vk::Device device = instance.GetDevice();
+    device.waitIdle();
+
+    for (const auto& [key, alloc] : texture_recycler) {
+        vmaDestroyImage(allocator, alloc.image, alloc.allocation);
+        device.destroyImageView(alloc.image_view);
+    }
+
+    for (const auto& [key, framebuffer] : clear_framebuffers) {
+        device.destroyFramebuffer(framebuffer);
+    }
+
+    texture_recycler.clear();
+}
+
+StagingData TextureRuntime::FindStaging(u32 size, bool upload) {
+    const u32 current_slot = scheduler.GetCurrentSlotIndex();
+    const u32 offset = staging_offsets[current_slot];
+    if (offset + size > STAGING_BUFFER_SIZE) {
+        LOG_CRITICAL(Render_Vulkan, "Staging buffer size exceeded!");
+        UNREACHABLE();
+    }
+
+    const auto& buffer = staging_buffers[current_slot];
+    return StagingData{
+        .buffer = buffer->buffer,
+        .size = size,
+        .mapped = buffer->mapped.subspan(offset, size),
+        .buffer_offset = offset
+    };
+}
+
+void TextureRuntime::OnSlotSwitch(u32 new_slot) {
+    staging_offsets[new_slot] = 0;
+}
+
+ImageAlloc TextureRuntime::Allocate(u32 width, u32 height, VideoCore::PixelFormat format,
+                                    VideoCore::TextureType type) {
+
+    const u32 layers = type == VideoCore::TextureType::CubeMap ? 6 : 1;
+    const VideoCore::HostTextureTag key = {
+        .format = format,
+        .width = width,
+        .height = height,
+        .layers = layers
+    };
+
+    // Attempt to recycle an unused allocation
+    if (auto it = texture_recycler.find(key); it != texture_recycler.end()) {
+        ImageAlloc alloc = std::move(it->second);
+        texture_recycler.erase(it);
+        return alloc;
+    }
+
+    // Create a new allocation
+    vk::Format vk_format = instance.GetFormatAlternative(ToVkFormat(format));
+    vk::ImageAspectFlags aspect = GetImageAspect(vk_format);
+
+    const u32 levels = std::bit_width(std::max(width, height));
+    const vk::ImageCreateInfo image_info = {
+        .flags = type == VideoCore::TextureType::CubeMap ?
+                 vk::ImageCreateFlagBits::eCubeCompatible :
+                 vk::ImageCreateFlags{},
+        .imageType = vk::ImageType::e2D,
+        .format = vk_format,
+        .extent = {width, height, 1},
+        .mipLevels = levels,
+        .arrayLayers = layers,
+        .samples = vk::SampleCountFlagBits::e1,
+        .usage = GetImageUsage(aspect),
+    };
+
+    const VmaAllocationCreateInfo alloc_info = {
+        .usage = VMA_MEMORY_USAGE_AUTO_PREFER_DEVICE
+    };
+
+    VkImage unsafe_image{};
+    VkImageCreateInfo unsafe_image_info = static_cast<VkImageCreateInfo>(image_info);
+    VmaAllocation allocation;
+
+    VkResult result = vmaCreateImage(instance.GetAllocator(), &unsafe_image_info, &alloc_info,
+                                     &unsafe_image, &allocation, nullptr);
+    if (result != VK_SUCCESS) {
+        LOG_CRITICAL(Render_Vulkan, "Failed allocating texture with error {}", result);
+        UNREACHABLE();
+    }
+
+    vk::Image image = vk::Image{unsafe_image};
+
+    const vk::ImageViewCreateInfo view_info = {
+        .image = image,
+        .viewType = type == VideoCore::TextureType::CubeMap ?
+                            vk::ImageViewType::eCube :
+                            vk::ImageViewType::e2D,
+        .format = vk_format,
+        .subresourceRange = {
+            .aspectMask = aspect,
+            .baseMipLevel = 0,
+            .levelCount = 1,
+            .baseArrayLayer = 0,
+            .layerCount = layers
+        }
+    };
+
+    vk::Device device = instance.GetDevice();
+    vk::ImageView image_view = device.createImageView(view_info);
+
+    return ImageAlloc{
+        .image = image,
+        .image_view = image_view,
+        .allocation = allocation,
+        .aspect = aspect,
+        .levels = levels,
+    };
+}
+
+void TextureRuntime::Recycle(const VideoCore::HostTextureTag tag, ImageAlloc&& alloc) {
+    texture_recycler.emplace(tag, std::move(alloc));
+}
+
+void TextureRuntime::FormatConvert(VideoCore::PixelFormat format,  bool upload,
+                                   std::span<std::byte> source, std::span<std::byte> dest) {
+    const VideoCore::SurfaceType type = VideoCore::GetFormatType(format);
+    const vk::FormatFeatureFlagBits feature = ToVkFormatFeatures(type);
+
+    if (format == VideoCore::PixelFormat::RGBA8) {
+        return Pica::Texture::ConvertABGRToRGBA(source, dest);
+    } else if (format == VideoCore::PixelFormat::RGB8 && upload) {
+        return Pica::Texture::ConvertBGRToRGBA(source, dest);
+    } else if (instance.IsFormatSupported(ToVkFormat(format), feature)) {
+        std::memcpy(dest.data(), source.data(), source.size());
+    } else {
+        LOG_CRITICAL(Render_Vulkan, "Unimplemented converion for format {}!", format);
+        std::memcpy(dest.data(), source.data(), source.size());
+    }
+}
+
+bool TextureRuntime::ClearTexture(Surface& surface, const VideoCore::TextureClear& clear,
+                                  VideoCore::ClearValue value) {
+    const vk::ImageAspectFlags aspect = ToVkAspect(surface.type);
+    renderpass_cache.ExitRenderpass();
+
+    vk::CommandBuffer command_buffer = scheduler.GetRenderCommandBuffer();
+    Transition(command_buffer, surface.alloc, vk::ImageLayout::eTransferDstOptimal,
+               0, surface.alloc.levels, 0, surface.texture_type == VideoCore::TextureType::CubeMap ? 6 : 1);
+
+    vk::ClearValue clear_value{};
+    if (aspect & vk::ImageAspectFlagBits::eColor) {
+        clear_value.color = vk::ClearColorValue{
+            .float32 = std::to_array({value.color[0], value.color[1], value.color[2], value.color[3]})
+        };
+    } else if (aspect & vk::ImageAspectFlagBits::eDepth || aspect & vk::ImageAspectFlagBits::eStencil) {
+        clear_value.depthStencil = vk::ClearDepthStencilValue{
+            .depth = value.depth,
+            .stencil = value.stencil
+        };
+    }
+
+    // For full clears we can use vkCmdClearColorImage/vkCmdClearDepthStencilImage
+    if (clear.texture_rect == surface.GetScaledRect()) {
+        const vk::ImageSubresourceRange range = {
+            .aspectMask = aspect,
+            .baseMipLevel = clear.texture_level,
+            .levelCount = 1,
+            .baseArrayLayer = 0,
+            .layerCount = 1
+        };
+
+        if (aspect & vk::ImageAspectFlagBits::eColor) {
+            command_buffer.clearColorImage(surface.alloc.image, vk::ImageLayout::eTransferDstOptimal,
+                                           clear_value.color, range);
+        } else if (aspect & vk::ImageAspectFlagBits::eDepth || aspect & vk::ImageAspectFlagBits::eStencil) {
+            command_buffer.clearDepthStencilImage(surface.alloc.image, vk::ImageLayout::eTransferDstOptimal,
+                                                  clear_value.depthStencil, range);
+        }
+    } else {
+        // For partial clears we begin a clear renderpass with the appropriate render area
+        vk::RenderPass clear_renderpass{};
+        ImageAlloc& alloc = surface.alloc;
+        if (aspect & vk::ImageAspectFlagBits::eColor) {
+            clear_renderpass = renderpass_cache.GetRenderpass(surface.pixel_format,
+                                                              VideoCore::PixelFormat::Invalid, true);
+            Transition(command_buffer, alloc, vk::ImageLayout::eColorAttachmentOptimal, 0, alloc.levels);
+        } else if (aspect & vk::ImageAspectFlagBits::eDepth || aspect & vk::ImageAspectFlagBits::eStencil) {
+            clear_renderpass = renderpass_cache.GetRenderpass(VideoCore::PixelFormat::Invalid,
+                                                              surface.pixel_format, true);
+            Transition(command_buffer, alloc, vk::ImageLayout::eDepthStencilAttachmentOptimal, 0, alloc.levels);
+        }
+
+        auto [it, new_framebuffer] = clear_framebuffers.try_emplace(alloc.image_view, vk::Framebuffer{});
+        if (new_framebuffer) {
+            const vk::FramebufferCreateInfo framebuffer_info = {
+                .renderPass = clear_renderpass,
+                .attachmentCount = 1,
+                .pAttachments = &alloc.image_view,
+                .width = surface.GetScaledWidth(),
+                .height = surface.GetScaledHeight(),
+                .layers = 1
+            };
+
+            vk::Device device = instance.GetDevice();
+            it->second = device.createFramebuffer(framebuffer_info);
+        }
+
+        const vk::RenderPassBeginInfo clear_begin_info = {
+            .renderPass = clear_renderpass,
+            .framebuffer = it->second,
+            .renderArea = vk::Rect2D{
+                .offset = {static_cast<s32>(clear.texture_rect.left), static_cast<s32>(clear.texture_rect.bottom)},
+                .extent = {clear.texture_rect.GetWidth(), clear.texture_rect.GetHeight()}
+            },
+            .clearValueCount = 1,
+            .pClearValues = &clear_value
+        };
+
+        renderpass_cache.EnterRenderpass(clear_begin_info);
+        renderpass_cache.ExitRenderpass();
+    }
+
+    return true;
+}
+
+bool TextureRuntime::CopyTextures(Surface& source, Surface& dest, const VideoCore::TextureCopy& copy) {
+    renderpass_cache.ExitRenderpass();
+
+    const vk::ImageCopy image_copy = {
+        .srcSubresource = {
+            .aspectMask = ToVkAspect(source.type),
+            .mipLevel = copy.src_level,
+            .baseArrayLayer = 0,
+            .layerCount = 1
+        },
+        .srcOffset = {static_cast<s32>(copy.src_offset.x), static_cast<s32>(copy.src_offset.y), 0},
+        .dstSubresource = {
+            .aspectMask = ToVkAspect(dest.type),
+            .mipLevel = copy.dst_level,
+            .baseArrayLayer = 0,
+            .layerCount = 1
+        },
+        .dstOffset = {static_cast<s32>(copy.dst_offset.x), static_cast<s32>(copy.dst_offset.y), 0},
+        .extent = {copy.extent.width, copy.extent.height, 1}
+    };
+
+    vk::CommandBuffer command_buffer = scheduler.GetRenderCommandBuffer();
+    Transition(command_buffer, source.alloc, vk::ImageLayout::eTransferSrcOptimal, 0, source.alloc.levels);
+    Transition(command_buffer, dest.alloc, vk::ImageLayout::eTransferDstOptimal, 0, dest.alloc.levels);
+
+    command_buffer.copyImage(source.alloc.image, vk::ImageLayout::eTransferSrcOptimal,
+                             dest.alloc.image, vk::ImageLayout::eTransferDstOptimal, image_copy);
+
+    return true;
+}
+
+bool TextureRuntime::BlitTextures(Surface& source, Surface& dest, const VideoCore::TextureBlit& blit) {
+    renderpass_cache.ExitRenderpass();
+
+    vk::CommandBuffer command_buffer = scheduler.GetRenderCommandBuffer();
+    Transition(command_buffer, source.alloc, vk::ImageLayout::eTransferSrcOptimal,
+               0, source.alloc.levels, 0, source.texture_type == VideoCore::TextureType::CubeMap ? 6 : 1);
+    Transition(command_buffer, dest.alloc, vk::ImageLayout::eTransferDstOptimal,
+               0, dest.alloc.levels, 0, dest.texture_type == VideoCore::TextureType::CubeMap ? 6 : 1);
+
+    const std::array source_offsets = {
+        vk::Offset3D{static_cast<s32>(blit.src_rect.left), static_cast<s32>(blit.src_rect.bottom), 0},
+        vk::Offset3D{static_cast<s32>(blit.src_rect.right), static_cast<s32>(blit.src_rect.top), 1}
+    };
+
+    const std::array dest_offsets = {
+        vk::Offset3D{static_cast<s32>(blit.dst_rect.left), static_cast<s32>(blit.dst_rect.bottom), 0},
+        vk::Offset3D{static_cast<s32>(blit.dst_rect.right), static_cast<s32>(blit.dst_rect.top), 1}
+    };
+
+    const vk::ImageBlit blit_area = {
+      .srcSubresource = {
+            .aspectMask = ToVkAspect(source.type),
+            .mipLevel = blit.src_level,
+            .baseArrayLayer = blit.src_layer,
+            .layerCount = 1
+       },
+      .srcOffsets = source_offsets,
+      .dstSubresource = {
+            .aspectMask = ToVkAspect(dest.type),
+            .mipLevel = blit.dst_level,
+            .baseArrayLayer = blit.dst_layer,
+            .layerCount = 1
+       },
+      .dstOffsets = dest_offsets
+    };
+
+    command_buffer.blitImage(source.alloc.image, vk::ImageLayout::eTransferSrcOptimal,
+                             dest.alloc.image, vk::ImageLayout::eTransferDstOptimal,
+                             blit_area, vk::Filter::eLinear);
+
+    return true;
+}
+
+void TextureRuntime::GenerateMipmaps(Surface& surface, u32 max_level) {
+    renderpass_cache.ExitRenderpass();
+
+    // TODO: Investigate AMD single pass downsampler
+    s32 current_width = surface.GetScaledWidth();
+    s32 current_height = surface.GetScaledHeight();
+
+    const u32 levels = std::bit_width(std::max(surface.width, surface.height));
+    vk::ImageAspectFlags aspect = ToVkAspect(surface.type);
+    vk::CommandBuffer command_buffer = scheduler.GetRenderCommandBuffer();
+    for (u32 i = 1; i < levels; i++) {
+        Transition(command_buffer, surface.alloc, vk::ImageLayout::eTransferSrcOptimal, i - 1, 1);
+        Transition(command_buffer, surface.alloc, vk::ImageLayout::eTransferDstOptimal, i, 1);
+
+        const std::array source_offsets = {
+            vk::Offset3D{0, 0, 0},
+            vk::Offset3D{current_width, current_height, 1}
+        };
+
+        const std::array dest_offsets = {
+            vk::Offset3D{0, 0, 0},
+            vk::Offset3D{current_width > 1 ? current_width / 2 : 1,
+                         current_height > 1 ? current_height / 2 : 1, 1}
+        };
+
+        const vk::ImageBlit blit_area = {
+          .srcSubresource = {
+                .aspectMask = aspect,
+                .mipLevel = i - 1,
+                .baseArrayLayer = 0,
+                .layerCount = 1
+           },
+          .srcOffsets = source_offsets,
+          .dstSubresource = {
+                .aspectMask = aspect,
+                .mipLevel = i,
+                .baseArrayLayer = 0,
+                .layerCount = 1
+           },
+          .dstOffsets = dest_offsets
+        };
+
+        command_buffer.blitImage(surface.alloc.image, vk::ImageLayout::eTransferSrcOptimal,
+                                 surface.alloc.image, vk::ImageLayout::eTransferDstOptimal,
+                                 blit_area, vk::Filter::eLinear);
+    }
+}
+
+void TextureRuntime::Transition(vk::CommandBuffer command_buffer, ImageAlloc& alloc,
+                                vk::ImageLayout new_layout, u32 level, u32 level_count,
+                                u32 layer, u32 layer_count) {
+    if (new_layout == alloc.layout || !alloc.image) {
+        return;
+    }
+
+    struct LayoutInfo {
+        vk::AccessFlags access;
+        vk::PipelineStageFlags stage;
+    };
+
+    // Get optimal transition settings for every image layout. Settings taken from Dolphin
+    auto GetLayoutInfo = [](vk::ImageLayout layout) -> LayoutInfo {
+        LayoutInfo info;
+        switch (layout) {
+        case vk::ImageLayout::eUndefined:
+            // Layout undefined therefore contents undefined, and we don't care what happens to it.
+            info.access = vk::AccessFlagBits::eNone;
+            info.stage = vk::PipelineStageFlagBits::eTopOfPipe;
+            break;
+        case vk::ImageLayout::ePreinitialized:
+            // Image has been pre-initialized by the host, so ensure all writes have completed.
+            info.access = vk::AccessFlagBits::eHostWrite;
+            info.stage = vk::PipelineStageFlagBits::eHost;
+            break;
+        case vk::ImageLayout::eColorAttachmentOptimal:
+            // Image was being used as a color attachment, so ensure all writes have completed.
+            info.access = vk::AccessFlagBits::eColorAttachmentRead |
+                    vk::AccessFlagBits::eColorAttachmentWrite;
+            info.stage = vk::PipelineStageFlagBits::eColorAttachmentOutput;
+            break;
+        case vk::ImageLayout::eDepthStencilAttachmentOptimal:
+            // Image was being used as a depthstencil attachment, so ensure all writes have completed.
+            info.access = vk::AccessFlagBits::eDepthStencilAttachmentRead |
+                    vk::AccessFlagBits::eDepthStencilAttachmentWrite;
+            info.stage = vk::PipelineStageFlagBits::eEarlyFragmentTests |
+                    vk::PipelineStageFlagBits::eLateFragmentTests;
+            break;
+        case vk::ImageLayout::ePresentSrcKHR:
+            info.access = vk::AccessFlagBits::eNone;
+            info.stage = vk::PipelineStageFlagBits::eBottomOfPipe;
+            break;
+        case vk::ImageLayout::eShaderReadOnlyOptimal:
+            // Image was being used as a shader resource, make sure all reads have finished.
+            info.access = vk::AccessFlagBits::eShaderRead;
+            info.stage = vk::PipelineStageFlagBits::eFragmentShader;
+            break;
+        case vk::ImageLayout::eTransferSrcOptimal:
+            // Image was being used as a copy source, ensure all reads have finished.
+            info.access = vk::AccessFlagBits::eTransferRead;
+            info.stage = vk::PipelineStageFlagBits::eTransfer;
+            break;
+        case vk::ImageLayout::eTransferDstOptimal:
+            // Image was being used as a copy destination, ensure all writes have finished.
+            info.access = vk::AccessFlagBits::eTransferWrite;
+            info.stage = vk::PipelineStageFlagBits::eTransfer;
+            break;
+        case vk::ImageLayout::eGeneral:
+            info.access = vk::AccessFlagBits::eInputAttachmentRead;
+            info.stage = vk::PipelineStageFlagBits::eColorAttachmentOutput |
+                    vk::PipelineStageFlagBits::eFragmentShader;
+            break;
+        default:
+            LOG_CRITICAL(Render_Vulkan, "Unhandled vulkan image layout {}\n", layout);
+            UNREACHABLE();
+        }
+
+        return info;
+    };
+
+    LayoutInfo source = GetLayoutInfo(alloc.layout);
+    LayoutInfo dest = GetLayoutInfo(new_layout);
+
+    const vk::ImageMemoryBarrier barrier = {
+        .srcAccessMask = source.access,
+        .dstAccessMask = dest.access,
+        .oldLayout = alloc.layout,
+        .newLayout = new_layout,
+        .image = alloc.image,
+        .subresourceRange = {
+            .aspectMask = alloc.aspect,
+            .baseMipLevel = /*level*/0,
+            .levelCount = /*level_count*/alloc.levels,
+            .baseArrayLayer = layer,
+            .layerCount = layer_count
+        }
+    };
+
+    command_buffer.pipelineBarrier(source.stage, dest.stage,
+                                   vk::DependencyFlagBits::eByRegion,
+                                   {}, {}, barrier);
+
+    alloc.layout = new_layout;
+}
+
+Surface::Surface(VideoCore::SurfaceParams& params, TextureRuntime& runtime)
+    : VideoCore::SurfaceBase<Surface>{params}, runtime{runtime}, instance{runtime.GetInstance()},
+      scheduler{runtime.GetScheduler()} {
+
+    if (pixel_format != VideoCore::PixelFormat::Invalid) {
+        alloc = runtime.Allocate(GetScaledWidth(), GetScaledHeight(), params.pixel_format, texture_type);
+    }
+}
+
+Surface::~Surface() {
+    if (pixel_format != VideoCore::PixelFormat::Invalid) {
+        const VideoCore::HostTextureTag tag = {
+            .format = pixel_format,
+            .width = GetScaledWidth(),
+            .height = GetScaledHeight(),
+            .layers = texture_type == VideoCore::TextureType::CubeMap ? 6u : 1u
+        };
+
+        runtime.Recycle(tag, std::move(alloc));
+    }
+}
+
+MICROPROFILE_DEFINE(Vulkan_Upload, "VulkanSurface", "Texture Upload", MP_RGB(128, 192, 64));
+void Surface::Upload(const VideoCore::BufferTextureCopy& upload, const StagingData& staging) {
+    MICROPROFILE_SCOPE(Vulkan_Upload);
+
+    runtime.renderpass_cache.ExitRenderpass();
+
+    const bool is_scaled = res_scale != 1;
+    if (is_scaled) {
+        ScaledUpload(upload);
+    } else {
+        vk::CommandBuffer command_buffer = scheduler.GetRenderCommandBuffer();
+        const VideoCore::Rect2D rect = upload.texture_rect;
+        const vk::BufferImageCopy copy_region = {
+            .bufferOffset = staging.buffer_offset,
+            .bufferRowLength = rect.GetWidth(),
+            .bufferImageHeight = rect.GetHeight(),
+            .imageSubresource = {
+                .aspectMask = alloc.aspect,
+                .mipLevel = upload.texture_level,
+                .baseArrayLayer = 0,
+                .layerCount = 1
+            },
+            .imageOffset = {static_cast<s32>(rect.left), static_cast<s32>(rect.bottom), 0},
+            .imageExtent = {rect.GetWidth(), rect.GetHeight(), 1}
+        };
+
+        runtime.Transition(command_buffer, alloc, vk::ImageLayout::eTransferDstOptimal, 0, alloc.levels,
+                           0, texture_type == VideoCore::TextureType::CubeMap ? 6 : 1);
+        command_buffer.copyBufferToImage(staging.buffer, alloc.image,
+                                         vk::ImageLayout::eTransferDstOptimal,
+                                         copy_region);
+    }
+
+    InvalidateAllWatcher();
+
+    // Lock this data until the next scheduler switch
+    const u32 current_slot = scheduler.GetCurrentSlotIndex();
+    runtime.staging_offsets[current_slot] += staging.size;
+}
+
+MICROPROFILE_DEFINE(Vulkan_Download, "VulkanSurface", "Texture Download", MP_RGB(128, 192, 64));
+void Surface::Download(const VideoCore::BufferTextureCopy& download, const StagingData& staging) {
+    MICROPROFILE_SCOPE(Vulkan_Download);
+
+    runtime.renderpass_cache.ExitRenderpass();
+
+    const bool is_scaled = res_scale != 1;
+    if (is_scaled) {
+        ScaledDownload(download);
+    } else {
+        u32 region_count = 0;
+        std::array<vk::BufferImageCopy, 2> copy_regions;
+
+        vk::CommandBuffer command_buffer = scheduler.GetRenderCommandBuffer();
+        const VideoCore::Rect2D rect = download.texture_rect;
+        vk::BufferImageCopy copy_region = {
+            .bufferOffset = staging.buffer_offset,
+            .bufferRowLength = rect.GetWidth(),
+            .bufferImageHeight = rect.GetHeight(),
+            .imageSubresource = {
+                .aspectMask = alloc.aspect,
+                .mipLevel = download.texture_level,
+                .baseArrayLayer = 0,
+                .layerCount = 1
+            },
+            .imageOffset = {static_cast<s32>(rect.left), static_cast<s32>(rect.bottom), 0},
+            .imageExtent = {rect.GetWidth(), rect.GetHeight(), 1}
+        };
+
+        if (alloc.aspect & vk::ImageAspectFlagBits::eColor) {
+            copy_regions[region_count++] = copy_region;
+        } else if (alloc.aspect & vk::ImageAspectFlagBits::eDepth) {
+            copy_region.imageSubresource.aspectMask = vk::ImageAspectFlagBits::eDepth;
+            copy_regions[region_count++] = copy_region;
+
+            if (alloc.aspect & vk::ImageAspectFlagBits::eStencil) {
+                return; // HACK: Skip depth + stencil downloads for now
+                copy_region.bufferOffset += staging.mapped.size();
+                copy_region.imageSubresource.aspectMask |= vk::ImageAspectFlagBits::eStencil;
+                copy_regions[region_count++] = copy_region;
+            }
+        }
+
+        runtime.Transition(command_buffer, alloc, vk::ImageLayout::eTransferSrcOptimal, download.texture_level, 1);
+
+        // Copy pixel data to the staging buffer
+        command_buffer.copyImageToBuffer(alloc.image, vk::ImageLayout::eTransferSrcOptimal,
+                                         staging.buffer, region_count, copy_regions.data());
+
+        scheduler.Submit(SubmitMode::Flush);
+    }
+
+    // Lock this data until the next scheduler switch
+    const u32 current_slot = scheduler.GetCurrentSlotIndex();
+    runtime.staging_offsets[current_slot] += staging.size;
+}
+
+void Surface::ScaledDownload(const VideoCore::BufferTextureCopy& download) {
+    /*const u32 rect_width = download.texture_rect.GetWidth();
+    const u32 rect_height = download.texture_rect.GetHeight();
+
+    // Allocate an unscaled texture that fits the download rectangle to use as a blit destination
+    const ImageAlloc unscaled_tex = runtime.Allocate(rect_width, rect_height, pixel_format,
+                                                     VideoCore::TextureType::Texture2D);
+    runtime.BindFramebuffer(GL_DRAW_FRAMEBUFFER, 0, GL_TEXTURE_2D, type, unscaled_tex);
+    runtime.BindFramebuffer(GL_READ_FRAMEBUFFER, download.texture_level, GL_TEXTURE_2D, type, texture);
+
+    // Blit the scaled rectangle to the unscaled texture
+    const VideoCore::Rect2D scaled_rect = download.texture_rect * res_scale;
+    glBlitFramebuffer(scaled_rect.left, scaled_rect.bottom, scaled_rect.right, scaled_rect.top,
+                      0, 0, rect_width, rect_height, MakeBufferMask(type), GL_LINEAR);
+
+    glActiveTexture(GL_TEXTURE0);
+    glBindTexture(GL_TEXTURE_2D, unscaled_tex.handle);
+
+    const auto& tuple = runtime.GetFormatTuple(pixel_format);
+    if (driver.IsOpenGLES()) {
+        const auto& downloader_es = runtime.GetDownloaderES();
+        downloader_es.GetTexImage(GL_TEXTURE_2D, 0, tuple.format, tuple.type,
+                                  rect_height, rect_width,
+                                  reinterpret_cast<void*>(download.buffer_offset));
+    } else {
+        glGetTexImage(GL_TEXTURE_2D, 0, tuple.format, tuple.type,
+                      reinterpret_cast<void*>(download.buffer_offset));
+    }*/
+}
+
+void Surface::ScaledUpload(const VideoCore::BufferTextureCopy& upload) {
+    /*const u32 rect_width = upload.texture_rect.GetWidth();
+    const u32 rect_height = upload.texture_rect.GetHeight();
+
+    OGLTexture unscaled_tex = runtime.Allocate(rect_width, rect_height, pixel_format,
+                                               VideoCore::TextureType::Texture2D);
+    glActiveTexture(GL_TEXTURE0);
+    glBindTexture(GL_TEXTURE_2D, unscaled_tex.handle);
+
+    glTexSubImage2D(GL_TEXTURE_2D, upload.texture_level, 0, 0, rect_width, rect_height,
+                    tuple.format, tuple.type, reinterpret_cast<void*>(upload.buffer_offset));
+
+    const auto scaled_rect = upload.texture_rect * res_scale;
+    const auto unscaled_rect = VideoCore::Rect2D{0, rect_height, rect_width, 0};
+    const auto& filterer = runtime.GetFilterer();
+    if (!filterer.Filter(unscaled_tex, unscaled_rect, texture, scaled_rect, type)) {
+        runtime.BindFramebuffer(GL_READ_FRAMEBUFFER, 0, GL_TEXTURE_2D, type, unscaled_tex);
+        runtime.BindFramebuffer(GL_DRAW_FRAMEBUFFER, upload.texture_level, GL_TEXTURE_2D, type, texture);
+
+        // If filtering fails, resort to normal blitting
+        glBlitFramebuffer(0, 0, rect_width, rect_height,
+                          upload.texture_rect.left, upload.texture_rect.bottom,
+                          upload.texture_rect.right, upload.texture_rect.top,
+                          MakeBufferMask(type), GL_LINEAR);
+    }*/
+}
+
+} // namespace Vulkan

src/video_core/renderer_vulkan/vk_texture_runtime.h

@@ -0,0 +1,143 @@
+// Copyright 2022 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+#include <span>
+#include <set>
+#include <vulkan/vulkan_hash.hpp>
+#include "video_core/rasterizer_cache/rasterizer_cache.h"
+#include "video_core/rasterizer_cache/surface_base.h"
+#include "video_core/rasterizer_cache/types.h"
+#include "video_core/renderer_vulkan/vk_stream_buffer.h"
+#include "video_core/renderer_vulkan/vk_task_scheduler.h"
+
+namespace Vulkan {
+
+struct StagingData {
+    vk::Buffer buffer;
+    u32 size = 0;
+    std::span<std::byte> mapped{};
+    u32 buffer_offset = 0;
+};
+
+struct ImageAlloc {
+    vk::Image image;
+    vk::ImageView image_view;
+    VmaAllocation allocation;
+    vk::ImageLayout layout = vk::ImageLayout::eUndefined;
+    vk::ImageAspectFlags aspect = vk::ImageAspectFlagBits::eNone;
+    u32 levels = 1;
+};
+
+class Instance;
+class RenderpassCache;
+class Surface;
+
+/**
+ * Provides texture manipulation functions to the rasterizer cache
+ * Separating this into a class makes it easier to abstract graphics API code
+ */
+class TextureRuntime {
+    friend class Surface;
+public:
+    TextureRuntime(const Instance& instance, TaskScheduler& scheduler,
+                   RenderpassCache& renderpass_cache);
+    ~TextureRuntime();
+
+    /// Maps an internal staging buffer of the provided size of pixel uploads/downloads
+    [[nodiscard]] StagingData FindStaging(u32 size, bool upload);
+
+    /// Allocates a vulkan image possibly resusing an existing one
+    [[nodiscard]] ImageAlloc Allocate(u32 width, u32 height, VideoCore::PixelFormat format,
+                                      VideoCore::TextureType type);
+
+    /// Takes back ownership of the allocation for recycling
+    void Recycle(const VideoCore::HostTextureTag tag, ImageAlloc&& alloc);
+
+    /// Performs required format convertions on the staging data
+    void FormatConvert(VideoCore::PixelFormat format,  bool upload,
+                       std::span<std::byte> source, std::span<std::byte> dest);
+
+    /// Transitions the mip level range of the surface to new_layout
+    void Transition(vk::CommandBuffer command_buffer, ImageAlloc& alloc,
+                    vk::ImageLayout new_layout, u32 level, u32 level_count,
+                    u32 layer = 0, u32 layer_count = 1);
+
+    /// Fills the rectangle of the texture with the clear value provided
+    bool ClearTexture(Surface& surface, const VideoCore::TextureClear& clear,
+                      VideoCore::ClearValue value);
+
+    /// Copies a rectangle of src_tex to another rectange of dst_rect
+    bool CopyTextures(Surface& source, Surface& dest, const VideoCore::TextureCopy& copy);
+
+    /// Blits a rectangle of src_tex to another rectange of dst_rect
+    bool BlitTextures(Surface& surface, Surface& dest, const VideoCore::TextureBlit& blit);
+
+    /// Generates mipmaps for all the available levels of the texture
+    void GenerateMipmaps(Surface& surface, u32 max_level);
+
+    /// Performs operations that need to be done on every scheduler slot switch
+    void OnSlotSwitch(u32 new_slot);
+
+private:
+    /// Returns the current Vulkan instance
+    const Instance& GetInstance() const {
+        return instance;
+    }
+
+    /// Returns the current Vulkan scheduler
+    TaskScheduler& GetScheduler() const {
+        return scheduler;
+    }
+
+private:
+    const Instance& instance;
+    TaskScheduler& scheduler;
+    RenderpassCache& renderpass_cache;
+    std::array<std::unique_ptr<StagingBuffer>, SCHEDULER_COMMAND_COUNT> staging_buffers;
+    std::array<u32, SCHEDULER_COMMAND_COUNT> staging_offsets{};
+    std::unordered_multimap<VideoCore::HostTextureTag, ImageAlloc> texture_recycler;
+    std::unordered_map<vk::ImageView, vk::Framebuffer> clear_framebuffers;
+};
+
+class Surface : public VideoCore::SurfaceBase<Surface> {
+    friend class TextureRuntime;
+    friend class RasterizerVulkan;
+public:
+    Surface(VideoCore::SurfaceParams& params, TextureRuntime& runtime);
+    ~Surface() override;
+
+    /// Uploads pixel data in staging to a rectangle region of the surface texture
+    void Upload(const VideoCore::BufferTextureCopy& upload, const StagingData& staging);
+
+    /// Downloads pixel data to staging from a rectangle region of the surface texture
+    void Download(const VideoCore::BufferTextureCopy& download, const StagingData& staging);
+
+private:
+    /// Downloads scaled image by downscaling the requested rectangle
+    void ScaledDownload(const VideoCore::BufferTextureCopy& download);
+
+    /// Uploads pixel data to scaled texture
+    void ScaledUpload(const VideoCore::BufferTextureCopy& upload);
+
+    /// Overrides the image layout of the mip level range
+    void SetLayout(vk::ImageLayout new_layout, u32 level = 0, u32 level_count = 1);
+
+private:
+    TextureRuntime& runtime;
+    const Instance& instance;
+    TaskScheduler& scheduler;
+
+    ImageAlloc alloc{};
+    vk::Format internal_format = vk::Format::eUndefined;
+};
+
+struct Traits {
+    using RuntimeType = TextureRuntime;
+    using SurfaceType = Surface;
+};
+
+using RasterizerCache = VideoCore::RasterizerCache<Traits>;
+
+} // namespace Vulkan

src/video_core/shader/shader_cache.h

@@ -0,0 +1,97 @@
+// Copyright 2022 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <optional>
+#include <unordered_map>
+#include <tuple>
+#include "video_core/shader/shader.h"
+
+namespace Pica::Shader {
+
+template <typename ShaderType>
+using ShaderCacheResult = std::pair<ShaderType, std::optional<std::string>>;
+
+template <typename KeyType, typename ShaderType, auto ModuleCompiler,
+          std::string(*CodeGenerator)(const KeyType&)>
+class ShaderCache {
+public:
+    ShaderCache() {}
+    ~ShaderCache() = default;
+
+    /// Returns a shader handle generated from the provided config
+    template <typename... Args>
+    auto Get(const KeyType& config, Args&&... args) -> ShaderCacheResult<ShaderType> {
+        auto [iter, new_shader] = shaders.emplace(config, ShaderType{});
+        auto& shader = iter->second;
+
+        if (new_shader) {
+            std::string code = CodeGenerator(config);
+            shader = ModuleCompiler(code, args...);
+            return std::make_pair(shader, code);
+        }
+
+        return std::make_pair(shader, std::nullopt);
+    }
+
+    void Inject(const KeyType& key, ShaderType&& shader) {
+        shaders.emplace(key, std::move(shader));
+    }
+
+public:
+    std::unordered_map<KeyType, ShaderType> shaders;
+};
+
+/**
+ * This is a cache designed for shaders translated from PICA shaders. The first cache matches the
+ * config structure like a normal cache does. On cache miss, the second cache matches the generated
+ * GLSL code. The configuration is like this because there might be leftover code in the PICA shader
+ * program buffer from the previous shader, which is hashed into the config, resulting several
+ * different config values from the same shader program.
+ */
+template <typename KeyType, typename ShaderType, auto ModuleCompiler,
+          std::optional<std::string>(*CodeGenerator)(const Pica::Shader::ShaderSetup&, const KeyType&)>
+class ShaderDoubleCache {
+public:
+    ShaderDoubleCache() = default;
+    ~ShaderDoubleCache() = default;
+
+    template <typename... Args>
+    auto Get(const KeyType& key, const Pica::Shader::ShaderSetup& setup, Args&&... args) -> ShaderCacheResult<ShaderType> {
+        if (auto map_iter = shader_map.find(key); map_iter == shader_map.end()) {
+            auto code = CodeGenerator(setup, key);
+            if (!code) {
+                shader_map[key] = nullptr;
+                return std::make_pair(ShaderType{}, std::nullopt);
+            }
+
+            std::string& program = code.value();
+            auto [iter, new_shader] = shader_cache.emplace(program, ShaderType{});
+            auto& shader = iter->second;
+
+            if (new_shader) {
+                shader = ModuleCompiler(program, args...);
+            }
+
+            shader_map[key] = &shader;
+            return std::make_pair(shader, std::move(program));
+        } else {
+            return std::make_pair(*map_iter->second, std::nullopt);
+        }
+    }
+
+    void Inject(const KeyType& key, std::string decomp, ShaderType&& program) {
+        const auto iter = shader_cache.emplace(std::move(decomp), std::move(program)).first;
+
+        auto& cached_shader = iter->second;
+        shader_map.insert_or_assign(key, &cached_shader);
+    }
+
+public:
+    std::unordered_map<KeyType, ShaderType*> shader_map;
+    std::unordered_map<std::string, ShaderType> shader_cache;
+};
+
+} // namespace Pica::Shader

src/video_core/shader/shader_uniforms.cpp

@@ -0,0 +1,25 @@
+// Copyright 2022 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <algorithm>
+#include "video_core/shader/shader.h"
+#include "video_core/shader/shader_uniforms.h"
+
+namespace Pica::Shader {
+
+void PicaUniformsData::SetFromRegs(const Pica::ShaderRegs& regs, const Pica::Shader::ShaderSetup& setup) {
+    std::transform(std::begin(setup.uniforms.b), std::end(setup.uniforms.b), std::begin(bools),
+                   [](bool value) -> BoolAligned { return {value ? 1 : 0}; });
+    std::transform(std::begin(regs.int_uniforms), std::end(regs.int_uniforms), std::begin(i),
+                   [](const auto& value) -> Common::Vec4u {
+                       return {value.x.Value(), value.y.Value(), value.z.Value(), value.w.Value()};
+                   });
+    std::transform(std::begin(setup.uniforms.f), std::end(setup.uniforms.f), std::begin(f),
+                   [](const auto& value) -> Common::Vec4f {
+                       return {value.x.ToFloat32(), value.y.ToFloat32(), value.z.ToFloat32(),
+                               value.w.ToFloat32()};
+                   });
+}
+
+} // namespace Pica::Shader

src/video_core/shader/shader_uniforms.h

@@ -0,0 +1,99 @@
+// Copyright 2022 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "common/vector_math.h"
+#include "video_core/regs_lighting.h"
+
+namespace Pica {
+struct ShaderRegs;
+}
+
+namespace Pica::Shader {
+
+class ShaderSetup;
+
+enum class UniformBindings : u32 { Common, VS, GS };
+
+struct LightSrc {
+    alignas(16) Common::Vec3f specular_0;
+    alignas(16) Common::Vec3f specular_1;
+    alignas(16) Common::Vec3f diffuse;
+    alignas(16) Common::Vec3f ambient;
+    alignas(16) Common::Vec3f position;
+    alignas(16) Common::Vec3f spot_direction; // negated
+    float dist_atten_bias;
+    float dist_atten_scale;
+};
+
+/**
+ * Uniform structure for the Uniform Buffer Object, all vectors must be 16-byte aligned
+ * NOTE: Always keep a vec4 at the end. The GL spec is not clear wether the alignment at
+ *       the end of a uniform block is included in UNIFORM_BLOCK_DATA_SIZE or not.
+ *       Not following that rule will cause problems on some AMD drivers.
+ */
+struct UniformData {
+    int framebuffer_scale;
+    int alphatest_ref;
+    float depth_scale;
+    float depth_offset;
+    float shadow_bias_constant;
+    float shadow_bias_linear;
+    int scissor_x1;
+    int scissor_y1;
+    int scissor_x2;
+    int scissor_y2;
+    int fog_lut_offset;
+    int proctex_noise_lut_offset;
+    int proctex_color_map_offset;
+    int proctex_alpha_map_offset;
+    int proctex_lut_offset;
+    int proctex_diff_lut_offset;
+    float proctex_bias;
+    int shadow_texture_bias;
+    bool enable_clip1;
+    alignas(16) Common::Vec4i lighting_lut_offset[LightingRegs::NumLightingSampler / 4];
+    alignas(16) Common::Vec3f fog_color;
+    alignas(8) Common::Vec2f proctex_noise_f;
+    alignas(8) Common::Vec2f proctex_noise_a;
+    alignas(8) Common::Vec2f proctex_noise_p;
+    alignas(16) Common::Vec3f lighting_global_ambient;
+    LightSrc light_src[8];
+    alignas(16) Common::Vec4f const_color[6]; // A vec4 color for each of the six tev stages
+    alignas(16) Common::Vec4f tev_combiner_buffer_color;
+    alignas(16) Common::Vec4f clip_coef;
+};
+
+static_assert(sizeof(UniformData) == 0x4F0,
+              "The size of the UniformData does not match the structure in the shader");
+static_assert(sizeof(UniformData) < 16384,
+              "UniformData structure must be less than 16kb as per the OpenGL spec");
+
+/**
+ * Uniform struct for the Uniform Buffer Object that contains PICA vertex/geometry shader uniforms.
+ * NOTE: the same rule from UniformData also applies here.
+ */
+struct PicaUniformsData {
+    void SetFromRegs(const ShaderRegs& regs, const ShaderSetup& setup);
+
+    struct BoolAligned {
+        alignas(16) int b;
+    };
+
+    std::array<BoolAligned, 16> bools;
+    alignas(16) std::array<Common::Vec4u, 4> i;
+    alignas(16) std::array<Common::Vec4f, 96> f;
+};
+
+struct VSUniformData {
+    PicaUniformsData uniforms;
+};
+static_assert(sizeof(VSUniformData) == 1856,
+              "The size of the VSUniformData does not match the structure in the shader");
+static_assert(sizeof(VSUniformData) < 16384,
+              "VSUniformData structure must be less than 16kb as per the OpenGL spec");
+
+
+} // namespace Pica::Shader

src/video_core/texture/texture_decode.cpp

@@ -227,14 +227,14 @@ void ConvertBGRToRGB(std::span<const std::byte> source, std::span<std::byte> des
     for (std::size_t i = 0; i < source.size(); i += 3) {
         u32 bgr{};
         std::memcpy(&bgr, source.data() + i, 3);
-        const u32 rgb = std::byteswap(bgr << 8);
+        const u32 rgb = Common::swap32(bgr << 8);
         std::memcpy(dest.data(), &rgb, 3);
     }
 }
 
 void ConvertBGRToRGBA(std::span<const std::byte> source, std::span<std::byte> dest) {
     u32 j = 0;
-    for (u32 i = 0; i < source.size(); i += 3) {
+    for (std::size_t i = 0; i < source.size(); i += 3) {
         dest[j] = source[i + 2];
         dest[j + 1] = source[i + 1];
         dest[j + 2] = source[i];
@@ -246,7 +246,7 @@ void ConvertBGRToRGBA(std::span<const std::byte> source, std::span<std::byte> de
 void ConvertABGRToRGBA(std::span<const std::byte> source, std::span<std::byte> dest) {
     for (u32 i = 0; i < source.size(); i += 4) {
         const u32 abgr = *reinterpret_cast<const u32*>(source.data() + i);
-        const u32 rgba = std::byteswap(abgr);
+        const u32 rgba = Common::swap32(abgr);
         std::memcpy(dest.data() + i, &rgba, 4);
     }
 }

src/video_core/video_core.cpp

@@ -11,6 +11,7 @@
 #include "video_core/renderer_base.h"
 #include "video_core/renderer_opengl/gl_vars.h"
 #include "video_core/renderer_opengl/renderer_opengl.h"
+#include "video_core/renderer_vulkan/renderer_vulkan.h"
 #include "video_core/video_core.h"
 
 ////////////////////////////////////////////////////////////////////////////////////////////////////
@@ -44,15 +45,26 @@ ResultStatus Init(Frontend::EmuWindow& emu_window, Frontend::EmuWindow* secondar
     g_memory = &memory;
     Pica::Init();
 
-    OpenGL::GLES = Settings::values.graphics_api.GetValue() == Settings::GraphicsAPI::OpenGLES;
+    const Settings::GraphicsAPI graphics_api = Settings::values.graphics_api.GetValue();
+    switch (graphics_api) {
+    case Settings::GraphicsAPI::OpenGL:
+    case Settings::GraphicsAPI::OpenGLES:
+        OpenGL::GLES = graphics_api == Settings::GraphicsAPI::OpenGLES;
+        g_renderer = std::make_unique<OpenGL::RendererOpenGL>(emu_window, secondary_window);
+        break;
+    case Settings::GraphicsAPI::Vulkan:
+        g_renderer = std::make_unique<Vulkan::RendererVulkan>(emu_window);
+        break;
+    default:
+        LOG_CRITICAL(Render, "Invalid graphics API enum value {}", graphics_api);
+        UNREACHABLE();
+    }
 
-    g_renderer = std::make_unique<OpenGL::RendererOpenGL>(emu_window, secondary_window);
     ResultStatus result = g_renderer->Init();
-
     if (result != ResultStatus::Success) {
-        LOG_ERROR(Render, "initialization failed !");
+        LOG_ERROR(Render, "Video core initialization failed");
     } else {
-        LOG_DEBUG(Render, "initialized OK");
+        LOG_INFO(Render, "Video core initialization OK");
     }
 
     return result;

src/web_service/verify_user_jwt.cpp

@@ -3,8 +3,8 @@
 // Refer to the license.txt file included.
 
 #include <system_error>
-#include <jwt/jwt.hpp>
 #include "common/logging/log.h"
+#include <jwt/jwt.hpp>
 #include "common/web_result.h"
 #include "web_service/verify_user_jwt.h"
 #include "web_service/web_backend.h"