renderer_vulkan: Add experimental Vulkan renderer

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"};