Merge pull request #12094 from ameerj/gl-buffer-cache-batch-vtx

gl_buffer_cache: Batch vertex/tfb buffer binding

src/video_core/renderer_opengl/gl_buffer_cache.cpp

@@ -53,13 +53,11 @@ Buffer::Buffer(BufferCacheRuntime& runtime, VideoCore::RasterizerInterface& rast
                VAddr cpu_addr_, u64 size_bytes_)
     : VideoCommon::BufferBase<VideoCore::RasterizerInterface>(rasterizer_, cpu_addr_, size_bytes_) {
     buffer.Create();
+    if (runtime.device.HasDebuggingToolAttached()) {
         const std::string name = fmt::format("Buffer 0x{:x}", CpuAddr());
         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);
     }
+    glNamedBufferData(buffer.handle, SizeBytes(), nullptr, GL_DYNAMIC_DRAW);
 }
 
 void Buffer::ImmediateUpload(size_t offset, std::span<const u8> data) noexcept {
@@ -111,7 +109,6 @@ 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);
@@ -123,6 +120,7 @@ BufferCacheRuntime::BufferCacheRuntime(const Device& device_,
                               GL_STREAM_DRAW);
         }
     }
+    if (use_assembly_shaders) {
         for (auto& stage_uniforms : copy_uniforms) {
             for (OGLBuffer& buffer : stage_uniforms) {
                 buffer.Create();
@@ -133,6 +131,7 @@ BufferCacheRuntime::BufferCacheRuntime(const Device& device_,
             buffer.Create();
             glNamedBufferData(buffer.handle, 0x10'000, nullptr, GL_STREAM_COPY);
         }
+    }
 
     device_access_memory = [this]() -> u64 {
         if (device.CanReportMemoryUsage()) {
@@ -211,39 +210,32 @@ 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) {
-    for (u32 index = 0; index < bindings.buffers.size(); ++index) {
-        BindVertexBuffer(bindings.min_index + index, *bindings.buffers[index],
-                         static_cast<u32>(bindings.offsets[index]),
-                         static_cast<u32>(bindings.sizes[index]),
-                         static_cast<u32>(bindings.strides[index]));
-    }
+    // TODO: Should HostBindings provide the correct runtime types to avoid these transforms?
+    std::array<GLuint, 32> buffer_handles;
+    std::array<GLsizei, 32> buffer_strides;
+    std::ranges::transform(bindings.buffers, buffer_handles.begin(),
+                           [](const Buffer* const buffer) { return buffer->Handle(); });
+    std::ranges::transform(bindings.strides, buffer_strides.begin(),
+                           [](u64 stride) { return static_cast<GLsizei>(stride); });
+    const u32 count =
+        std::min(static_cast<u32>(bindings.buffers.size()), max_attributes - bindings.min_index);
+    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,
@@ -335,11 +327,13 @@ void BufferCacheRuntime::BindTransformFeedbackBuffer(u32 index, Buffer& buffer,
 }
 
 void BufferCacheRuntime::BindTransformFeedbackBuffers(VideoCommon::HostBindings<Buffer>& bindings) {
-    for (u32 index = 0; index < bindings.buffers.size(); ++index) {
-        glBindBufferRange(GL_TRANSFORM_FEEDBACK_BUFFER, index, bindings.buffers[index]->Handle(),
-                          static_cast<GLintptr>(bindings.offsets[index]),
-                          static_cast<GLsizeiptr>(bindings.sizes[index]));
-    }
+    std::array<GLuint, 4> buffer_handles;
+    std::ranges::transform(bindings.buffers, buffer_handles.begin(),
+                           [](const Buffer* const buffer) { return buffer->Handle(); });
+    glBindBuffersRange(GL_TRANSFORM_FEEDBACK_BUFFER, 0,
+                       static_cast<GLsizei>(bindings.buffers.size()), buffer_handles.data(),
+                       reinterpret_cast<const GLintptr*>(bindings.offsets.data()),
+                       reinterpret_cast<const GLsizeiptr*>(bindings.strides.data()));
 }
 
 void BufferCacheRuntime::BindTextureBuffer(Buffer& buffer, u32 offset, u32 size,

src/video_core/renderer_opengl/gl_buffer_cache.h

@@ -209,7 +209,6 @@ private:
 
     bool has_fast_buffer_sub_data = false;
     bool use_assembly_shaders = false;
-    bool has_unified_vertex_buffers = false;
 
     bool use_storage_buffers = false;
 

src/video_core/renderer_opengl/gl_device.cpp

@@ -200,7 +200,6 @@ 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;

src/video_core/renderer_opengl/gl_device.h

@@ -72,10 +72,6 @@ public:
         return has_texture_shadow_lod;
     }
 
-    bool HasVertexBufferUnifiedMemory() const {
-        return has_vertex_buffer_unified_memory;
-    }
-
     bool HasASTC() const {
         return has_astc;
     }
@@ -215,7 +211,6 @@ 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{};

src/video_core/renderer_opengl/renderer_opengl.cpp

@@ -168,15 +168,6 @@ 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;
@@ -680,13 +671,7 @@ 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);