Merge pull request #12411 from ameerj/gl-nv-tfb-fixups
gl_buffer_cache: Reintroduce NV_vertex_buffer_unified_memory
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		| @@ -58,6 +58,9 @@ Buffer::Buffer(BufferCacheRuntime& runtime, VideoCore::RasterizerInterface& rast | ||||
|         glObjectLabel(GL_BUFFER, buffer.handle, static_cast<GLsizei>(name.size()), name.data()); | ||||
|     } | ||||
|     glNamedBufferData(buffer.handle, SizeBytes(), nullptr, GL_DYNAMIC_DRAW); | ||||
|     if (runtime.has_unified_vertex_buffers) { | ||||
|         glGetNamedBufferParameterui64vNV(buffer.handle, GL_BUFFER_GPU_ADDRESS_NV, &address); | ||||
|     } | ||||
| } | ||||
|  | ||||
| void Buffer::ImmediateUpload(size_t offset, std::span<const u8> data) noexcept { | ||||
| @@ -109,6 +112,7 @@ BufferCacheRuntime::BufferCacheRuntime(const Device& device_, | ||||
|     : device{device_}, staging_buffer_pool{staging_buffer_pool_}, | ||||
|       has_fast_buffer_sub_data{device.HasFastBufferSubData()}, | ||||
|       use_assembly_shaders{device.UseAssemblyShaders()}, | ||||
|       has_unified_vertex_buffers{device.HasVertexBufferUnifiedMemory()}, | ||||
|       stream_buffer{has_fast_buffer_sub_data ? std::nullopt : std::make_optional<StreamBuffer>()} { | ||||
|     GLint gl_max_attributes; | ||||
|     glGetIntegerv(GL_MAX_VERTEX_ATTRIBS, &gl_max_attributes); | ||||
| @@ -210,18 +214,31 @@ void BufferCacheRuntime::ClearBuffer(Buffer& dest_buffer, u32 offset, size_t siz | ||||
| } | ||||
|  | ||||
| void BufferCacheRuntime::BindIndexBuffer(Buffer& buffer, u32 offset, u32 size) { | ||||
|     if (has_unified_vertex_buffers) { | ||||
|         buffer.MakeResident(GL_READ_ONLY); | ||||
|         glBufferAddressRangeNV(GL_ELEMENT_ARRAY_ADDRESS_NV, 0, buffer.HostGpuAddr() + offset, | ||||
|                                static_cast<GLsizeiptr>(Common::AlignUp(size, 4))); | ||||
|     } else { | ||||
|         glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffer.Handle()); | ||||
|         index_buffer_offset = offset; | ||||
|     } | ||||
| } | ||||
|  | ||||
| void BufferCacheRuntime::BindVertexBuffer(u32 index, Buffer& buffer, u32 offset, u32 size, | ||||
|                                           u32 stride) { | ||||
|     if (index >= max_attributes) { | ||||
|         return; | ||||
|     } | ||||
|     if (has_unified_vertex_buffers) { | ||||
|         buffer.MakeResident(GL_READ_ONLY); | ||||
|         glBindVertexBuffer(index, 0, 0, static_cast<GLsizei>(stride)); | ||||
|         glBufferAddressRangeNV(GL_VERTEX_ATTRIB_ARRAY_ADDRESS_NV, index, | ||||
|                                buffer.HostGpuAddr() + offset, static_cast<GLsizeiptr>(size)); | ||||
|     } else { | ||||
|         glBindVertexBuffer(index, buffer.Handle(), static_cast<GLintptr>(offset), | ||||
|                            static_cast<GLsizei>(stride)); | ||||
|     } | ||||
| } | ||||
|  | ||||
| void BufferCacheRuntime::BindVertexBuffers(VideoCommon::HostBindings<Buffer>& bindings) { | ||||
|     // TODO: Should HostBindings provide the correct runtime types to avoid these transforms? | ||||
| @@ -233,10 +250,24 @@ void BufferCacheRuntime::BindVertexBuffers(VideoCommon::HostBindings<Buffer>& bi | ||||
|                            [](u64 stride) { return static_cast<GLsizei>(stride); }); | ||||
|     const u32 count = | ||||
|         std::min(static_cast<u32>(bindings.buffers.size()), max_attributes - bindings.min_index); | ||||
|     if (has_unified_vertex_buffers) { | ||||
|         for (u32 index = 0; index < count; ++index) { | ||||
|             Buffer& buffer = *bindings.buffers[index]; | ||||
|             buffer.MakeResident(GL_READ_ONLY); | ||||
|             glBufferAddressRangeNV(GL_VERTEX_ATTRIB_ARRAY_ADDRESS_NV, bindings.min_index + index, | ||||
|                                    buffer.HostGpuAddr() + bindings.offsets[index], | ||||
|                                    static_cast<GLsizeiptr>(bindings.sizes[index])); | ||||
|         } | ||||
|         static constexpr std::array<size_t, 32> ZEROS{}; | ||||
|         glBindVertexBuffers(bindings.min_index, static_cast<GLsizei>(count), | ||||
|                             reinterpret_cast<const GLuint*>(ZEROS.data()), | ||||
|                             reinterpret_cast<const GLintptr*>(ZEROS.data()), buffer_strides.data()); | ||||
|     } else { | ||||
|         glBindVertexBuffers(bindings.min_index, static_cast<GLsizei>(count), buffer_handles.data(), | ||||
|                             reinterpret_cast<const GLintptr*>(bindings.offsets.data()), | ||||
|                             buffer_strides.data()); | ||||
|     } | ||||
| } | ||||
|  | ||||
| void BufferCacheRuntime::BindUniformBuffer(size_t stage, u32 binding_index, Buffer& buffer, | ||||
|                                            u32 offset, u32 size) { | ||||
|   | ||||
| @@ -209,6 +209,7 @@ private: | ||||
|  | ||||
|     bool has_fast_buffer_sub_data = false; | ||||
|     bool use_assembly_shaders = false; | ||||
|     bool has_unified_vertex_buffers = false; | ||||
|  | ||||
|     bool use_storage_buffers = false; | ||||
|  | ||||
|   | ||||
| @@ -200,6 +200,7 @@ Device::Device(Core::Frontend::EmuWindow& emu_window) { | ||||
|     has_broken_texture_view_formats = is_amd || (!is_linux && is_intel); | ||||
|     has_nv_viewport_array2 = GLAD_GL_NV_viewport_array2; | ||||
|     has_derivative_control = GLAD_GL_ARB_derivative_control; | ||||
|     has_vertex_buffer_unified_memory = GLAD_GL_NV_vertex_buffer_unified_memory; | ||||
|     has_debugging_tool_attached = IsDebugToolAttached(extensions); | ||||
|     has_depth_buffer_float = HasExtension(extensions, "GL_NV_depth_buffer_float"); | ||||
|     has_geometry_shader_passthrough = GLAD_GL_NV_geometry_shader_passthrough; | ||||
|   | ||||
| @@ -72,6 +72,10 @@ public: | ||||
|         return has_texture_shadow_lod; | ||||
|     } | ||||
|  | ||||
|     bool HasVertexBufferUnifiedMemory() const { | ||||
|         return has_vertex_buffer_unified_memory; | ||||
|     } | ||||
|  | ||||
|     bool HasASTC() const { | ||||
|         return has_astc; | ||||
|     } | ||||
| @@ -211,6 +215,7 @@ private: | ||||
|     bool has_vertex_viewport_layer{}; | ||||
|     bool has_image_load_formatted{}; | ||||
|     bool has_texture_shadow_lod{}; | ||||
|     bool has_vertex_buffer_unified_memory{}; | ||||
|     bool has_astc{}; | ||||
|     bool has_variable_aoffi{}; | ||||
|     bool has_component_indexing_bug{}; | ||||
|   | ||||
| @@ -162,14 +162,18 @@ void RasterizerOpenGL::Clear(u32 layer_count) { | ||||
|         SyncFramebufferSRGB(); | ||||
|     } | ||||
|     if (regs.clear_surface.Z) { | ||||
|         ASSERT_MSG(regs.zeta_enable != 0, "Tried to clear Z but buffer is not enabled!"); | ||||
|         if (regs.zeta_enable != 0) { | ||||
|             LOG_DEBUG(Render_OpenGL, "Tried to clear Z but buffer is not enabled!"); | ||||
|         } | ||||
|         use_depth = true; | ||||
|  | ||||
|         state_tracker.NotifyDepthMask(); | ||||
|         glDepthMask(GL_TRUE); | ||||
|     } | ||||
|     if (regs.clear_surface.S) { | ||||
|         ASSERT_MSG(regs.zeta_enable, "Tried to clear stencil but buffer is not enabled!"); | ||||
|         if (regs.zeta_enable) { | ||||
|             LOG_DEBUG(Render_OpenGL, "Tried to clear stencil but buffer is not enabled!"); | ||||
|         } | ||||
|         use_stencil = true; | ||||
|     } | ||||
|  | ||||
| @@ -1294,15 +1298,13 @@ void RasterizerOpenGL::BeginTransformFeedback(GraphicsPipeline* program, GLenum | ||||
|     program->ConfigureTransformFeedback(); | ||||
|  | ||||
|     UNIMPLEMENTED_IF(regs.IsShaderConfigEnabled(Maxwell::ShaderType::TessellationInit) || | ||||
|                      regs.IsShaderConfigEnabled(Maxwell::ShaderType::Tessellation) || | ||||
|                      regs.IsShaderConfigEnabled(Maxwell::ShaderType::Geometry)); | ||||
|     UNIMPLEMENTED_IF(primitive_mode != GL_POINTS); | ||||
|                      regs.IsShaderConfigEnabled(Maxwell::ShaderType::Tessellation)); | ||||
|  | ||||
|     // We may have to call BeginTransformFeedbackNV here since they seem to call different | ||||
|     // implementations on Nvidia's driver (the pointer is different) but we are using | ||||
|     // ARB_transform_feedback3 features with NV_transform_feedback interactions and the ARB | ||||
|     // extension doesn't define BeginTransformFeedback (without NV) interactions. It just works. | ||||
|     glBeginTransformFeedback(GL_POINTS); | ||||
|     glBeginTransformFeedback(primitive_mode); | ||||
| } | ||||
|  | ||||
| void RasterizerOpenGL::EndTransformFeedback() { | ||||
|   | ||||
| @@ -168,6 +168,14 @@ RendererOpenGL::RendererOpenGL(Core::TelemetrySession& telemetry_session_, | ||||
|     if (!GLAD_GL_ARB_seamless_cubemap_per_texture && !GLAD_GL_AMD_seamless_cubemap_per_texture) { | ||||
|         glEnable(GL_TEXTURE_CUBE_MAP_SEAMLESS); | ||||
|     } | ||||
|     // Enable unified vertex attributes and query vertex buffer address when the driver supports it | ||||
|     if (device.HasVertexBufferUnifiedMemory()) { | ||||
|         glEnableClientState(GL_VERTEX_ATTRIB_ARRAY_UNIFIED_NV); | ||||
|         glEnableClientState(GL_ELEMENT_ARRAY_UNIFIED_NV); | ||||
|         glMakeNamedBufferResidentNV(vertex_buffer.handle, GL_READ_ONLY); | ||||
|         glGetNamedBufferParameterui64vNV(vertex_buffer.handle, GL_BUFFER_GPU_ADDRESS_NV, | ||||
|                                          &vertex_buffer_address); | ||||
|     } | ||||
| } | ||||
|  | ||||
| RendererOpenGL::~RendererOpenGL() = default; | ||||
| @@ -667,7 +675,13 @@ void RendererOpenGL::DrawScreen(const Layout::FramebufferLayout& layout) { | ||||
|                          offsetof(ScreenRectVertex, tex_coord)); | ||||
|     glVertexAttribBinding(PositionLocation, 0); | ||||
|     glVertexAttribBinding(TexCoordLocation, 0); | ||||
|     if (device.HasVertexBufferUnifiedMemory()) { | ||||
|         glBindVertexBuffer(0, 0, 0, sizeof(ScreenRectVertex)); | ||||
|         glBufferAddressRangeNV(GL_VERTEX_ATTRIB_ARRAY_ADDRESS_NV, 0, vertex_buffer_address, | ||||
|                                sizeof(vertices)); | ||||
|     } else { | ||||
|         glBindVertexBuffer(0, vertex_buffer.handle, 0, sizeof(ScreenRectVertex)); | ||||
|     } | ||||
|  | ||||
|     if (Settings::values.scaling_filter.GetValue() != Settings::ScalingFilter::NearestNeighbor) { | ||||
|         glBindSampler(0, present_sampler.handle); | ||||
|   | ||||
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