| /* |
| * Copyright 2023 Rive |
| */ |
| |
| #include "rive/pls/webgpu/pls_render_context_webgpu_impl.hpp" |
| |
| #include "pls_render_context_webgpu_vulkan.hpp" |
| #include "rive/pls/pls_image.hpp" |
| #include "shaders/constants.glsl" |
| |
| #include "shaders/out/generated/spirv/color_ramp.vert.h" |
| #include "shaders/out/generated/spirv/color_ramp.frag.h" |
| #include "shaders/out/generated/spirv/tessellate.vert.h" |
| #include "shaders/out/generated/spirv/tessellate.frag.h" |
| #include "shaders/out/generated/spirv/draw_path.vert.h" |
| #include "shaders/out/generated/spirv/draw_path.frag.h" |
| #include "shaders/out/generated/spirv/draw_interior_triangles.vert.h" |
| #include "shaders/out/generated/spirv/draw_interior_triangles.frag.h" |
| #include "shaders/out/generated/spirv/draw_image_mesh.vert.h" |
| #include "shaders/out/generated/spirv/draw_image_mesh.frag.h" |
| |
| #include "shaders/out/generated/glsl.glsl.hpp" |
| #include "shaders/out/generated/constants.glsl.hpp" |
| #include "shaders/out/generated/common.glsl.hpp" |
| #include "shaders/out/generated/tessellate.glsl.hpp" |
| #include "shaders/out/generated/advanced_blend.glsl.hpp" |
| #include "shaders/out/generated/draw_path.glsl.hpp" |
| #include "shaders/out/generated/draw_path_common.glsl.hpp" |
| #include "shaders/out/generated/draw_image_mesh.glsl.hpp" |
| |
| #include <sstream> |
| #include <string> |
| |
| #ifdef RIVE_DAWN |
| #include <dawn/webgpu_cpp.h> |
| |
| static void enable_shader_pixel_local_storage_ext(wgpu::RenderPassEncoder, bool enabled) |
| { |
| RIVE_UNREACHABLE(); |
| } |
| |
| static void write_texture(wgpu::Queue queue, |
| wgpu::Texture texture, |
| uint32_t bytesPerRow, |
| uint32_t width, |
| uint32_t height, |
| const void* data, |
| size_t dataSize) |
| { |
| wgpu::ImageCopyTexture dest = { |
| .texture = texture, |
| .mipLevel = 0, |
| }; |
| wgpu::TextureDataLayout layout = { |
| .bytesPerRow = bytesPerRow, |
| }; |
| wgpu::Extent3D extent = { |
| .width = width, |
| .height = height, |
| }; |
| queue.WriteTexture(&dest, data, dataSize, &layout, &extent); |
| } |
| |
| static void write_buffer(wgpu::Queue queue, wgpu::Buffer buffer, const void* data, size_t dataSize) |
| { |
| queue.WriteBuffer(buffer, 0, data, dataSize); |
| } |
| #endif |
| |
| #ifdef RIVE_WEBGPU |
| #include <webgpu/webgpu_cpp.h> |
| #include <emscripten.h> |
| #include <emscripten/html5_webgpu.h> |
| |
| EM_JS(void, enable_shader_pixel_local_storage_ext_js, (int renderPass, bool enabled), { |
| renderPass = JsValStore.get(renderPass); |
| renderPass.setShaderPixelLocalStorageEnabled(Boolean(enabled)); |
| }); |
| |
| static void enable_shader_pixel_local_storage_ext(wgpu::RenderPassEncoder renderPass, bool enabled) |
| { |
| enable_shader_pixel_local_storage_ext_js( |
| emscripten_webgpu_export_render_pass_encoder(renderPass.Get()), |
| enabled); |
| } |
| |
| EM_JS(void, |
| write_texture_js, |
| (int queue, |
| int texture, |
| uint32_t bytesPerRow, |
| uint32_t width, |
| uint32_t height, |
| uintptr_t indexU8, |
| size_t dataSize), |
| { |
| queue = JsValStore.get(queue); |
| texture = JsValStore.get(texture); |
| // Copy data off the WASM heap before sending it to WebGPU bindings. |
| const data = new Uint8Array(dataSize); |
| data.set(Module.HEAPU8.subarray(indexU8, indexU8 + dataSize)); |
| queue.writeTexture({texture}, |
| data, |
| {bytesPerRow : bytesPerRow}, |
| {width : width, height : height}); |
| }); |
| |
| static void write_texture(wgpu::Queue queue, |
| wgpu::Texture texture, |
| uint32_t bytesPerRow, |
| uint32_t width, |
| uint32_t height, |
| const void* data, |
| size_t dataSize) |
| { |
| write_texture_js(emscripten_webgpu_export_queue(queue.Get()), |
| emscripten_webgpu_export_texture(texture.Get()), |
| bytesPerRow, |
| width, |
| height, |
| reinterpret_cast<uintptr_t>(data), |
| dataSize); |
| } |
| |
| EM_JS(void, write_buffer_js, (int queue, int buffer, uintptr_t indexU8, size_t dataSize), { |
| queue = JsValStore.get(queue); |
| buffer = JsValStore.get(buffer); |
| // Copy data off the WASM heap before sending it to WebGPU bindings. |
| const data = new Uint8Array(dataSize); |
| data.set(Module.HEAPU8.subarray(indexU8, indexU8 + dataSize)); |
| queue.writeBuffer(buffer, 0, data, 0, dataSize); |
| }); |
| |
| static void write_buffer(wgpu::Queue queue, wgpu::Buffer buffer, const void* data, size_t dataSize) |
| { |
| write_buffer_js(emscripten_webgpu_export_queue(queue.Get()), |
| emscripten_webgpu_export_buffer(buffer.Get()), |
| reinterpret_cast<uintptr_t>(data), |
| dataSize); |
| } |
| #endif |
| |
| namespace rive::pls |
| { |
| // Draws emulated render-pass load/store actions for EXT_shader_pixel_local_storage. |
| class PLSRenderContextWebGPUImpl::LoadStoreEXTPipeline |
| { |
| public: |
| LoadStoreEXTPipeline(PLSRenderContextWebGPUImpl* context, |
| LoadStoreActionsEXT actions, |
| wgpu::TextureFormat framebufferFormat) : |
| m_framebufferFormat(framebufferFormat) |
| { |
| wgpu::PipelineLayoutDescriptor pipelineLayoutDesc; |
| if (actions & LoadStoreActionsEXT::clearColor) |
| { |
| // Create a uniform buffer binding for the clear color. |
| wgpu::BindGroupLayoutEntry bindingLayouts[] = { |
| { |
| .binding = 0, |
| .visibility = wgpu::ShaderStage::Fragment, |
| .buffer = |
| { |
| .type = wgpu::BufferBindingType::Uniform, |
| }, |
| }, |
| }; |
| |
| wgpu::BindGroupLayoutDescriptor bindingsDesc = { |
| .entryCount = std::size(bindingLayouts), |
| .entries = bindingLayouts, |
| }; |
| |
| m_bindGroupLayout = context->m_device.CreateBindGroupLayout(&bindingsDesc); |
| |
| pipelineLayoutDesc = { |
| .bindGroupLayoutCount = 1, |
| .bindGroupLayouts = &m_bindGroupLayout, |
| }; |
| } |
| else |
| { |
| pipelineLayoutDesc = { |
| .bindGroupLayoutCount = 0, |
| .bindGroupLayouts = nullptr, |
| }; |
| } |
| |
| wgpu::PipelineLayout pipelineLayout = |
| context->m_device.CreatePipelineLayout(&pipelineLayoutDesc); |
| |
| wgpu::ShaderModule fragmentShader; |
| std::ostringstream glsl; |
| glsl << "#version 310 es\n"; |
| glsl << "#pragma shader_stage(fragment)\n"; |
| glsl << "#define " GLSL_FRAGMENT "\n"; |
| glsl << "#define " GLSL_ENABLE_CLIPPING "\n"; |
| BuildLoadStoreEXTGLSL(glsl, actions); |
| fragmentShader = m_fragmentShaderHandle.compileShaderModule(context->m_device, |
| glsl.str().c_str(), |
| "glsl-raw"); |
| |
| wgpu::ColorTargetState colorTargetState = { |
| .format = framebufferFormat, |
| }; |
| |
| wgpu::FragmentState fragmentState = { |
| .module = fragmentShader, |
| .entryPoint = "main", |
| .targetCount = 1, |
| .targets = &colorTargetState, |
| }; |
| |
| wgpu::RenderPipelineDescriptor desc = { |
| .layout = pipelineLayout, |
| .vertex = |
| { |
| .module = context->m_loadStoreEXTVertexShader, |
| .entryPoint = "main", |
| .bufferCount = 0, |
| .buffers = nullptr, |
| }, |
| .primitive = |
| { |
| .topology = wgpu::PrimitiveTopology::TriangleStrip, |
| .frontFace = context->m_frontFaceForOnScreenDraws, |
| .cullMode = wgpu::CullMode::Back, |
| }, |
| .fragment = &fragmentState, |
| }; |
| |
| m_renderPipeline = context->m_device.CreateRenderPipeline(&desc); |
| } |
| |
| const wgpu::BindGroupLayout& bindGroupLayout() const |
| { |
| assert(m_bindGroupLayout); // We only have a bind group if there is a clear color. |
| return m_bindGroupLayout; |
| } |
| |
| wgpu::RenderPipeline renderPipeline(wgpu::TextureFormat framebufferFormat) const |
| { |
| assert(framebufferFormat == m_framebufferFormat); |
| return m_renderPipeline; |
| } |
| |
| private: |
| const wgpu::TextureFormat m_framebufferFormat RIVE_MAYBE_UNUSED; |
| wgpu::BindGroupLayout m_bindGroupLayout; |
| EmJsHandle m_fragmentShaderHandle; |
| wgpu::RenderPipeline m_renderPipeline; |
| }; |
| |
| // Renders color ramps to the gradient texture. |
| class PLSRenderContextWebGPUImpl::ColorRampPipeline |
| { |
| public: |
| ColorRampPipeline(wgpu::Device device) |
| { |
| wgpu::BindGroupLayoutEntry bindingLayouts[] = { |
| { |
| .binding = FLUSH_UNIFORM_BUFFER_IDX, |
| .visibility = wgpu::ShaderStage::Vertex, |
| .buffer = |
| { |
| .type = wgpu::BufferBindingType::Uniform, |
| }, |
| }, |
| }; |
| |
| wgpu::BindGroupLayoutDescriptor bindingsDesc = { |
| .entryCount = std::size(bindingLayouts), |
| .entries = bindingLayouts, |
| }; |
| |
| m_bindGroupLayout = device.CreateBindGroupLayout(&bindingsDesc); |
| |
| wgpu::PipelineLayoutDescriptor pipelineLayoutDesc = { |
| .bindGroupLayoutCount = 1, |
| .bindGroupLayouts = &m_bindGroupLayout, |
| }; |
| |
| wgpu::PipelineLayout pipelineLayout = device.CreatePipelineLayout(&pipelineLayoutDesc); |
| |
| wgpu::ShaderModule vertexShader = |
| m_vertexShaderHandle.compileSPIRVShaderModule(device, |
| color_ramp_vert, |
| std::size(color_ramp_vert)); |
| |
| wgpu::VertexAttribute attrs[] = { |
| { |
| .format = wgpu::VertexFormat::Uint32x4, |
| .offset = 0, |
| .shaderLocation = 0, |
| }, |
| }; |
| |
| wgpu::VertexBufferLayout vertexBufferLayout = { |
| .arrayStride = sizeof(pls::GradientSpan), |
| .stepMode = wgpu::VertexStepMode::Instance, |
| .attributeCount = std::size(attrs), |
| .attributes = attrs, |
| }; |
| |
| wgpu::ShaderModule fragmentShader = |
| m_fragmentShaderHandle.compileSPIRVShaderModule(device, |
| color_ramp_frag, |
| std::size(color_ramp_frag)); |
| |
| wgpu::ColorTargetState colorTargetState = { |
| .format = wgpu::TextureFormat::RGBA8Unorm, |
| }; |
| |
| wgpu::FragmentState fragmentState = { |
| .module = fragmentShader, |
| .entryPoint = "main", |
| .targetCount = 1, |
| .targets = &colorTargetState, |
| }; |
| |
| wgpu::RenderPipelineDescriptor desc = { |
| .layout = pipelineLayout, |
| .vertex = |
| { |
| .module = vertexShader, |
| .entryPoint = "main", |
| .bufferCount = 1, |
| .buffers = &vertexBufferLayout, |
| }, |
| .primitive = |
| { |
| .topology = wgpu::PrimitiveTopology::TriangleStrip, |
| .frontFace = kFrontFaceForOffscreenDraws, |
| .cullMode = wgpu::CullMode::Back, |
| }, |
| .fragment = &fragmentState, |
| }; |
| |
| m_renderPipeline = device.CreateRenderPipeline(&desc); |
| } |
| |
| const wgpu::BindGroupLayout& bindGroupLayout() const { return m_bindGroupLayout; } |
| const wgpu::RenderPipeline& renderPipeline() const { return m_renderPipeline; } |
| |
| private: |
| wgpu::BindGroupLayout m_bindGroupLayout; |
| EmJsHandle m_vertexShaderHandle; |
| EmJsHandle m_fragmentShaderHandle; |
| wgpu::RenderPipeline m_renderPipeline; |
| }; |
| |
| // Renders tessellated vertices to the tessellation texture. |
| class PLSRenderContextWebGPUImpl::TessellatePipeline |
| { |
| public: |
| TessellatePipeline(wgpu::Device device, const ContextOptions& contextOptions) |
| { |
| wgpu::BindGroupLayoutEntry bindingLayouts[] = { |
| contextOptions.disableStorageBuffers ? |
| wgpu::BindGroupLayoutEntry{ |
| .binding = PATH_BUFFER_IDX, |
| .visibility = wgpu::ShaderStage::Vertex, |
| .texture = |
| { |
| .sampleType = wgpu::TextureSampleType::Uint, |
| .viewDimension = wgpu::TextureViewDimension::e2D, |
| }, |
| } : |
| wgpu::BindGroupLayoutEntry{ |
| .binding = PATH_BUFFER_IDX, |
| .visibility = wgpu::ShaderStage::Vertex, |
| .buffer = |
| { |
| .type = wgpu::BufferBindingType::ReadOnlyStorage, |
| }, |
| }, |
| contextOptions.disableStorageBuffers ? |
| wgpu::BindGroupLayoutEntry{ |
| .binding = CONTOUR_BUFFER_IDX, |
| .visibility = wgpu::ShaderStage::Vertex, |
| .texture = |
| { |
| .sampleType = wgpu::TextureSampleType::Uint, |
| .viewDimension = wgpu::TextureViewDimension::e2D, |
| }, |
| } : |
| wgpu::BindGroupLayoutEntry{ |
| .binding = CONTOUR_BUFFER_IDX, |
| .visibility = wgpu::ShaderStage::Vertex, |
| .buffer = |
| { |
| .type = wgpu::BufferBindingType::ReadOnlyStorage, |
| }, |
| }, |
| { |
| .binding = FLUSH_UNIFORM_BUFFER_IDX, |
| .visibility = wgpu::ShaderStage::Vertex, |
| .buffer = |
| { |
| .type = wgpu::BufferBindingType::Uniform, |
| }, |
| }, |
| }; |
| |
| wgpu::BindGroupLayoutDescriptor bindingsDesc = { |
| .entryCount = std::size(bindingLayouts), |
| .entries = bindingLayouts, |
| }; |
| |
| m_bindGroupLayout = device.CreateBindGroupLayout(&bindingsDesc); |
| |
| wgpu::PipelineLayoutDescriptor pipelineLayoutDesc = { |
| .bindGroupLayoutCount = 1, |
| .bindGroupLayouts = &m_bindGroupLayout, |
| }; |
| |
| wgpu::PipelineLayout pipelineLayout = device.CreatePipelineLayout(&pipelineLayoutDesc); |
| |
| wgpu::ShaderModule vertexShader; |
| if (contextOptions.disableStorageBuffers) |
| { |
| // The built-in SPIRV does not #define DISABLE_SHADER_STORAGE_BUFFERS. Recompile the |
| // tessellation shader with storage buffers disabled. |
| std::ostringstream vertexGLSL; |
| vertexGLSL << "#version 460\n"; |
| vertexGLSL << "#pragma shader_stage(vertex)\n"; |
| vertexGLSL << "#define " GLSL_VERTEX "\n"; |
| vertexGLSL << "#define " GLSL_DISABLE_SHADER_STORAGE_BUFFERS "\n"; |
| vertexGLSL << "#define " GLSL_TARGET_VULKAN "\n"; |
| vertexGLSL << "#extension GL_EXT_samplerless_texture_functions : enable\n"; |
| vertexGLSL << glsl::glsl << "\n"; |
| vertexGLSL << glsl::constants << "\n"; |
| vertexGLSL << glsl::common << "\n"; |
| vertexGLSL << glsl::tessellate << "\n"; |
| vertexShader = |
| m_vertexShaderHandle.compileShaderModule(device, vertexGLSL.str().c_str(), "glsl"); |
| } |
| else |
| { |
| vertexShader = |
| m_vertexShaderHandle.compileSPIRVShaderModule(device, |
| tessellate_vert, |
| std::size(tessellate_vert)); |
| } |
| |
| wgpu::VertexAttribute attrs[] = { |
| { |
| .format = wgpu::VertexFormat::Float32x4, |
| .offset = 0, |
| .shaderLocation = 0, |
| }, |
| { |
| .format = wgpu::VertexFormat::Float32x4, |
| .offset = 4 * sizeof(float), |
| .shaderLocation = 1, |
| }, |
| { |
| .format = wgpu::VertexFormat::Float32x4, |
| .offset = 8 * sizeof(float), |
| .shaderLocation = 2, |
| }, |
| { |
| .format = wgpu::VertexFormat::Uint32x4, |
| .offset = 12 * sizeof(float), |
| .shaderLocation = 3, |
| }, |
| }; |
| |
| wgpu::VertexBufferLayout vertexBufferLayout = { |
| .arrayStride = sizeof(pls::TessVertexSpan), |
| .stepMode = wgpu::VertexStepMode::Instance, |
| .attributeCount = std::size(attrs), |
| .attributes = attrs, |
| }; |
| |
| wgpu::ShaderModule fragmentShader = |
| m_fragmentShaderHandle.compileSPIRVShaderModule(device, |
| tessellate_frag, |
| std::size(tessellate_frag)); |
| |
| wgpu::ColorTargetState colorTargetState = { |
| .format = wgpu::TextureFormat::RGBA32Uint, |
| }; |
| |
| wgpu::FragmentState fragmentState = { |
| .module = fragmentShader, |
| .entryPoint = "main", |
| .targetCount = 1, |
| .targets = &colorTargetState, |
| }; |
| |
| wgpu::RenderPipelineDescriptor desc = { |
| .layout = pipelineLayout, |
| .vertex = |
| { |
| .module = vertexShader, |
| .entryPoint = "main", |
| .bufferCount = 1, |
| .buffers = &vertexBufferLayout, |
| }, |
| .primitive = |
| { |
| .topology = wgpu::PrimitiveTopology::TriangleList, |
| .frontFace = kFrontFaceForOffscreenDraws, |
| .cullMode = wgpu::CullMode::Back, |
| }, |
| .fragment = &fragmentState, |
| }; |
| |
| m_renderPipeline = device.CreateRenderPipeline(&desc); |
| } |
| |
| const wgpu::BindGroupLayout& bindGroupLayout() const { return m_bindGroupLayout; } |
| const wgpu::RenderPipeline renderPipeline() const { return m_renderPipeline; } |
| |
| private: |
| wgpu::BindGroupLayout m_bindGroupLayout; |
| EmJsHandle m_vertexShaderHandle; |
| EmJsHandle m_fragmentShaderHandle; |
| wgpu::RenderPipeline m_renderPipeline; |
| }; |
| |
| // Draw paths and image meshes using the gradient and tessellation textures. |
| class PLSRenderContextWebGPUImpl::DrawPipeline |
| { |
| public: |
| DrawPipeline(PLSRenderContextWebGPUImpl* context, |
| DrawType drawType, |
| pls::ShaderFeatures shaderFeatures, |
| const ContextOptions& contextOptions) |
| { |
| PixelLocalStorageType plsType = context->m_contextOptions.plsType; |
| wgpu::ShaderModule vertexShader, fragmentShader; |
| if (plsType == PixelLocalStorageType::subpassLoad || |
| plsType == PixelLocalStorageType::EXT_shader_pixel_local_storage || |
| contextOptions.disableStorageBuffers) |
| { |
| const char* language; |
| const char* versionString; |
| if (plsType == PixelLocalStorageType::EXT_shader_pixel_local_storage) |
| { |
| language = "glsl-raw"; |
| versionString = "#version 310 es"; |
| } |
| else |
| { |
| language = "glsl"; |
| versionString = "#version 460"; |
| } |
| |
| std::ostringstream glsl; |
| auto addDefine = [&glsl](const char* name) { glsl << "#define " << name << "\n"; }; |
| if (plsType == PixelLocalStorageType::EXT_shader_pixel_local_storage) |
| { |
| glsl << "#ifdef GL_EXT_shader_pixel_local_storage\n"; |
| addDefine(GLSL_PLS_IMPL_EXT_NATIVE); |
| glsl << "#else\n"; |
| glsl << "#extension GL_EXT_samplerless_texture_functions : enable\n"; |
| addDefine(GLSL_TARGET_VULKAN); |
| // If we are being compiled by SPIRV transpiler for introspection, |
| // GL_EXT_shader_pixel_local_storage will not be defined. |
| addDefine(GLSL_PLS_IMPL_NONE); |
| glsl << "#endif\n"; |
| } |
| else |
| { |
| glsl << "#extension GL_EXT_samplerless_texture_functions : enable\n"; |
| addDefine(GLSL_TARGET_VULKAN); |
| addDefine(plsType == PixelLocalStorageType::subpassLoad ? GLSL_PLS_IMPL_SUBPASS_LOAD |
| : GLSL_PLS_IMPL_NONE); |
| } |
| if (contextOptions.disableStorageBuffers) |
| { |
| addDefine(GLSL_DISABLE_SHADER_STORAGE_BUFFERS); |
| } |
| switch (drawType) |
| { |
| case DrawType::midpointFanPatches: |
| case DrawType::outerCurvePatches: |
| addDefine(GLSL_ENABLE_INSTANCE_INDEX); |
| if (plsType == PixelLocalStorageType::EXT_shader_pixel_local_storage) |
| { |
| // The WebGPU layer automatically searches for a uniform named |
| // "SPIRV_Cross_BaseInstance" and manages it for us. |
| addDefine(GLSL_ENABLE_SPIRV_CROSS_BASE_INSTANCE); |
| } |
| break; |
| case DrawType::interiorTriangulation: |
| addDefine(GLSL_DRAW_INTERIOR_TRIANGLES); |
| break; |
| case DrawType::imageRect: |
| RIVE_UNREACHABLE(); |
| case DrawType::imageMesh: |
| break; |
| case DrawType::plsAtomicInitialize: |
| case DrawType::plsAtomicResolve: |
| case DrawType::stencilClipReset: |
| RIVE_UNREACHABLE(); |
| } |
| for (size_t i = 0; i < pls::kShaderFeatureCount; ++i) |
| { |
| ShaderFeatures feature = static_cast<ShaderFeatures>(1 << i); |
| if (shaderFeatures & feature) |
| { |
| addDefine(GetShaderFeatureGLSLName(feature)); |
| } |
| } |
| glsl << pls::glsl::glsl << '\n'; |
| glsl << pls::glsl::constants << '\n'; |
| glsl << pls::glsl::common << '\n'; |
| if (shaderFeatures & ShaderFeatures::ENABLE_ADVANCED_BLEND) |
| { |
| glsl << pls::glsl::advanced_blend << '\n'; |
| } |
| if (context->platformFeatures().avoidFlatVaryings) |
| { |
| addDefine(GLSL_OPTIONALLY_FLAT); |
| } |
| else |
| { |
| glsl << "#define " GLSL_OPTIONALLY_FLAT " flat\n"; |
| } |
| switch (drawType) |
| { |
| case DrawType::midpointFanPatches: |
| case DrawType::outerCurvePatches: |
| addDefine(GLSL_DRAW_PATH); |
| glsl << pls::glsl::draw_path_common << '\n'; |
| glsl << pls::glsl::draw_path << '\n'; |
| break; |
| case DrawType::interiorTriangulation: |
| addDefine(GLSL_DRAW_INTERIOR_TRIANGLES); |
| glsl << pls::glsl::draw_path_common << '\n'; |
| glsl << pls::glsl::draw_path << '\n'; |
| break; |
| case DrawType::imageRect: |
| addDefine(GLSL_DRAW_IMAGE); |
| addDefine(GLSL_DRAW_IMAGE_RECT); |
| RIVE_UNREACHABLE(); |
| case DrawType::imageMesh: |
| addDefine(GLSL_DRAW_IMAGE); |
| addDefine(GLSL_DRAW_IMAGE_MESH); |
| glsl << pls::glsl::draw_image_mesh << '\n'; |
| break; |
| case DrawType::plsAtomicInitialize: |
| addDefine(GLSL_DRAW_RENDER_TARGET_UPDATE_BOUNDS); |
| addDefine(GLSL_INITIALIZE_PLS); |
| RIVE_UNREACHABLE(); |
| case DrawType::plsAtomicResolve: |
| addDefine(GLSL_DRAW_RENDER_TARGET_UPDATE_BOUNDS); |
| addDefine(GLSL_RESOLVE_PLS); |
| RIVE_UNREACHABLE(); |
| case DrawType::stencilClipReset: |
| RIVE_UNREACHABLE(); |
| } |
| |
| std::ostringstream vertexGLSL; |
| vertexGLSL << versionString << "\n"; |
| vertexGLSL << "#pragma shader_stage(vertex)\n"; |
| vertexGLSL << "#define " GLSL_VERTEX "\n"; |
| vertexGLSL << glsl.str(); |
| vertexShader = m_vertexShaderHandle.compileShaderModule(context->m_device, |
| vertexGLSL.str().c_str(), |
| language); |
| |
| std::ostringstream fragmentGLSL; |
| fragmentGLSL << versionString << "\n"; |
| fragmentGLSL << "#pragma shader_stage(fragment)\n"; |
| fragmentGLSL << "#define " GLSL_FRAGMENT "\n"; |
| fragmentGLSL << glsl.str(); |
| fragmentShader = m_fragmentShaderHandle.compileShaderModule(context->m_device, |
| fragmentGLSL.str().c_str(), |
| language); |
| } |
| else |
| { |
| switch (drawType) |
| { |
| case DrawType::midpointFanPatches: |
| case DrawType::outerCurvePatches: |
| vertexShader = |
| m_vertexShaderHandle.compileSPIRVShaderModule(context->m_device, |
| draw_path_vert, |
| std::size(draw_path_vert)); |
| fragmentShader = |
| m_fragmentShaderHandle.compileSPIRVShaderModule(context->m_device, |
| draw_path_frag, |
| std::size(draw_path_frag)); |
| break; |
| case DrawType::interiorTriangulation: |
| vertexShader = m_vertexShaderHandle.compileSPIRVShaderModule( |
| context->m_device, |
| draw_interior_triangles_vert, |
| std::size(draw_interior_triangles_vert)); |
| fragmentShader = m_fragmentShaderHandle.compileSPIRVShaderModule( |
| context->m_device, |
| draw_interior_triangles_frag, |
| std::size(draw_interior_triangles_frag)); |
| break; |
| case DrawType::imageRect: |
| RIVE_UNREACHABLE(); |
| case DrawType::imageMesh: |
| vertexShader = m_vertexShaderHandle.compileSPIRVShaderModule( |
| context->m_device, |
| draw_image_mesh_vert, |
| std::size(draw_image_mesh_vert)); |
| fragmentShader = m_fragmentShaderHandle.compileSPIRVShaderModule( |
| context->m_device, |
| draw_image_mesh_frag, |
| std::size(draw_image_mesh_frag)); |
| break; |
| case DrawType::plsAtomicInitialize: |
| case DrawType::plsAtomicResolve: |
| case DrawType::stencilClipReset: |
| RIVE_UNREACHABLE(); |
| } |
| } |
| |
| for (auto framebufferFormat : |
| {wgpu::TextureFormat::BGRA8Unorm, wgpu::TextureFormat::RGBA8Unorm}) |
| { |
| int pipelineIdx = RenderPipelineIdx(framebufferFormat); |
| m_renderPipelines[pipelineIdx] = |
| context->makePLSDrawPipeline(drawType, |
| framebufferFormat, |
| vertexShader, |
| fragmentShader, |
| &m_renderPipelineHandles[pipelineIdx]); |
| } |
| } |
| |
| const wgpu::RenderPipeline renderPipeline(wgpu::TextureFormat framebufferFormat) const |
| { |
| return m_renderPipelines[RenderPipelineIdx(framebufferFormat)]; |
| } |
| |
| private: |
| static int RenderPipelineIdx(wgpu::TextureFormat framebufferFormat) |
| { |
| assert(framebufferFormat == wgpu::TextureFormat::BGRA8Unorm || |
| framebufferFormat == wgpu::TextureFormat::RGBA8Unorm); |
| return framebufferFormat == wgpu::TextureFormat::BGRA8Unorm ? 1 : 0; |
| } |
| |
| EmJsHandle m_vertexShaderHandle; |
| EmJsHandle m_fragmentShaderHandle; |
| wgpu::RenderPipeline m_renderPipelines[2]; |
| EmJsHandle m_renderPipelineHandles[2]; |
| }; |
| |
| PLSRenderContextWebGPUImpl::PLSRenderContextWebGPUImpl( |
| wgpu::Device device, |
| wgpu::Queue queue, |
| const ContextOptions& contextOptions, |
| const PlatformFeatures& baselinePlatformFeatures) : |
| m_device(device), |
| m_queue(queue), |
| m_contextOptions(contextOptions), |
| m_frontFaceForOnScreenDraws(wgpu::FrontFace::CW), |
| m_colorRampPipeline(std::make_unique<ColorRampPipeline>(m_device)), |
| m_tessellatePipeline(std::make_unique<TessellatePipeline>(m_device, m_contextOptions)) |
| { |
| m_platformFeatures = baselinePlatformFeatures; |
| m_platformFeatures.invertOffscreenY = true; |
| |
| if (m_contextOptions.plsType == PixelLocalStorageType::EXT_shader_pixel_local_storage && |
| baselinePlatformFeatures.uninvertOnScreenY) |
| { |
| // We will use "glsl-raw" in order to access EXT_shader_pixel_local_storage, so the WebGPU |
| // layer won't actually get a chance to negate Y like it thinks it will. |
| m_platformFeatures.uninvertOnScreenY = false; |
| // PLS always expects CW, but in this case, we need to specify CCW. This is because the |
| // WebGPU layer thinks it's going to negate Y in our shader, and will therefore also flip |
| // our frontFace. However, since we will use raw-glsl shaders, the WebGPU layer won't |
| // actually get a chance to negate Y like it thinks it will. Therefore, we emit the wrong |
| // frontFace, in anticipation of it getting flipped into the correct frontFace on its way to |
| // the driver. |
| m_frontFaceForOnScreenDraws = wgpu::FrontFace::CCW; |
| } |
| } |
| |
| void PLSRenderContextWebGPUImpl::initGPUObjects() |
| { |
| wgpu::BindGroupLayoutEntry drawBindingLayouts[] = { |
| { |
| .binding = TESS_VERTEX_TEXTURE_IDX, |
| .visibility = wgpu::ShaderStage::Vertex, |
| .texture = |
| { |
| .sampleType = wgpu::TextureSampleType::Uint, |
| .viewDimension = wgpu::TextureViewDimension::e2D, |
| }, |
| }, |
| { |
| .binding = GRAD_TEXTURE_IDX, |
| .visibility = wgpu::ShaderStage::Fragment, |
| .texture = |
| { |
| .sampleType = wgpu::TextureSampleType::Float, |
| .viewDimension = wgpu::TextureViewDimension::e2D, |
| }, |
| }, |
| { |
| .binding = IMAGE_TEXTURE_IDX, |
| .visibility = wgpu::ShaderStage::Fragment, |
| .texture = |
| { |
| .sampleType = wgpu::TextureSampleType::Float, |
| .viewDimension = wgpu::TextureViewDimension::e2D, |
| }, |
| }, |
| m_contextOptions.disableStorageBuffers ? |
| wgpu::BindGroupLayoutEntry{ |
| .binding = PATH_BUFFER_IDX, |
| .visibility = wgpu::ShaderStage::Vertex, |
| .texture = |
| { |
| .sampleType = wgpu::TextureSampleType::Uint, |
| .viewDimension = wgpu::TextureViewDimension::e2D, |
| }, |
| } : |
| wgpu::BindGroupLayoutEntry{ |
| .binding = PATH_BUFFER_IDX, |
| .visibility = wgpu::ShaderStage::Vertex, |
| .buffer = |
| { |
| .type = wgpu::BufferBindingType::ReadOnlyStorage, |
| }, |
| }, |
| m_contextOptions.disableStorageBuffers ? |
| wgpu::BindGroupLayoutEntry{ |
| .binding = PAINT_BUFFER_IDX, |
| .visibility = wgpu::ShaderStage::Vertex, |
| .texture = |
| { |
| .sampleType = wgpu::TextureSampleType::Uint, |
| .viewDimension = wgpu::TextureViewDimension::e2D, |
| }, |
| } : |
| wgpu::BindGroupLayoutEntry{ |
| .binding = PAINT_BUFFER_IDX, |
| .visibility = wgpu::ShaderStage::Vertex, |
| .buffer = |
| { |
| .type = wgpu::BufferBindingType::ReadOnlyStorage, |
| }, |
| }, |
| m_contextOptions.disableStorageBuffers ? |
| wgpu::BindGroupLayoutEntry{ |
| .binding = PAINT_AUX_BUFFER_IDX, |
| .visibility = wgpu::ShaderStage::Vertex, |
| .texture = |
| { |
| .sampleType = wgpu::TextureSampleType::UnfilterableFloat, |
| .viewDimension = wgpu::TextureViewDimension::e2D, |
| }, |
| } : |
| wgpu::BindGroupLayoutEntry{ |
| .binding = PAINT_AUX_BUFFER_IDX, |
| .visibility = wgpu::ShaderStage::Vertex, |
| .buffer = |
| { |
| .type = wgpu::BufferBindingType::ReadOnlyStorage, |
| }, |
| }, |
| m_contextOptions.disableStorageBuffers ? |
| wgpu::BindGroupLayoutEntry{ |
| .binding = CONTOUR_BUFFER_IDX, |
| .visibility = wgpu::ShaderStage::Vertex, |
| .texture = |
| { |
| .sampleType = wgpu::TextureSampleType::Uint, |
| .viewDimension = wgpu::TextureViewDimension::e2D, |
| }, |
| } : |
| wgpu::BindGroupLayoutEntry{ |
| .binding = CONTOUR_BUFFER_IDX, |
| .visibility = wgpu::ShaderStage::Vertex, |
| .buffer = |
| { |
| .type = wgpu::BufferBindingType::ReadOnlyStorage, |
| }, |
| }, |
| { |
| .binding = FLUSH_UNIFORM_BUFFER_IDX, |
| .visibility = wgpu::ShaderStage::Vertex, |
| .buffer = |
| { |
| .type = wgpu::BufferBindingType::Uniform, |
| }, |
| }, |
| { |
| .binding = IMAGE_DRAW_UNIFORM_BUFFER_IDX, |
| .visibility = wgpu::ShaderStage::Vertex | wgpu::ShaderStage::Fragment, |
| .buffer = |
| { |
| .type = wgpu::BufferBindingType::Uniform, |
| .hasDynamicOffset = true, |
| .minBindingSize = sizeof(pls::ImageDrawUniforms), |
| }, |
| }, |
| }; |
| |
| wgpu::BindGroupLayoutDescriptor drawBindingsDesc = { |
| .entryCount = std::size(drawBindingLayouts), |
| .entries = drawBindingLayouts, |
| }; |
| |
| m_drawBindGroupLayouts[0] = m_device.CreateBindGroupLayout(&drawBindingsDesc); |
| |
| wgpu::BindGroupLayoutEntry drawBindingSamplerLayouts[] = { |
| { |
| .binding = GRAD_TEXTURE_IDX, |
| .visibility = wgpu::ShaderStage::Fragment, |
| .sampler = |
| { |
| .type = wgpu::SamplerBindingType::Filtering, |
| }, |
| }, |
| { |
| .binding = IMAGE_TEXTURE_IDX, |
| .visibility = wgpu::ShaderStage::Fragment, |
| .sampler = |
| { |
| .type = wgpu::SamplerBindingType::Filtering, |
| }, |
| }, |
| }; |
| |
| wgpu::BindGroupLayoutDescriptor samplerBindingsDesc = { |
| .entryCount = std::size(drawBindingSamplerLayouts), |
| .entries = drawBindingSamplerLayouts, |
| }; |
| |
| m_drawBindGroupLayouts[SAMPLER_BINDINGS_SET] = |
| m_device.CreateBindGroupLayout(&samplerBindingsDesc); |
| |
| wgpu::SamplerDescriptor linearSamplerDesc = { |
| .addressModeU = wgpu::AddressMode::ClampToEdge, |
| .addressModeV = wgpu::AddressMode::ClampToEdge, |
| .magFilter = wgpu::FilterMode::Linear, |
| .minFilter = wgpu::FilterMode::Linear, |
| .mipmapFilter = wgpu::MipmapFilterMode::Nearest, |
| }; |
| |
| m_linearSampler = m_device.CreateSampler(&linearSamplerDesc); |
| |
| wgpu::SamplerDescriptor mipmapSamplerDesc = { |
| .addressModeU = wgpu::AddressMode::ClampToEdge, |
| .addressModeV = wgpu::AddressMode::ClampToEdge, |
| .magFilter = wgpu::FilterMode::Linear, |
| .minFilter = wgpu::FilterMode::Linear, |
| .mipmapFilter = wgpu::MipmapFilterMode::Nearest, |
| }; |
| |
| m_mipmapSampler = m_device.CreateSampler(&mipmapSamplerDesc); |
| |
| wgpu::BindGroupEntry samplerBindingEntries[] = { |
| { |
| .binding = GRAD_TEXTURE_IDX, |
| .sampler = m_linearSampler, |
| }, |
| { |
| .binding = IMAGE_TEXTURE_IDX, |
| .sampler = m_mipmapSampler, |
| }, |
| }; |
| |
| wgpu::BindGroupDescriptor samplerBindGroupDesc = { |
| .layout = m_drawBindGroupLayouts[SAMPLER_BINDINGS_SET], |
| .entryCount = std::size(samplerBindingEntries), |
| .entries = samplerBindingEntries, |
| }; |
| |
| m_samplerBindings = m_device.CreateBindGroup(&samplerBindGroupDesc); |
| |
| bool needsPLSTextureBindings = m_contextOptions.plsType == PixelLocalStorageType::subpassLoad; |
| if (needsPLSTextureBindings) |
| { |
| m_drawBindGroupLayouts[PLS_TEXTURE_BINDINGS_SET] = initPLSTextureBindGroup(); |
| } |
| |
| wgpu::PipelineLayoutDescriptor drawPipelineLayoutDesc = { |
| .bindGroupLayoutCount = static_cast<size_t>(needsPLSTextureBindings ? 3 : 2), |
| .bindGroupLayouts = m_drawBindGroupLayouts, |
| }; |
| |
| m_drawPipelineLayout = m_device.CreatePipelineLayout(&drawPipelineLayoutDesc); |
| |
| if (m_contextOptions.plsType == PixelLocalStorageType::EXT_shader_pixel_local_storage) |
| { |
| // We have to manually implement load/store operations from a shader when using |
| // EXT_shader_pixel_local_storage. |
| std::ostringstream glsl; |
| glsl << "#version 310 es\n"; |
| glsl << "#pragma shader_stage(vertex)\n"; |
| glsl << "#define " GLSL_VERTEX "\n"; |
| // If we are being compiled by SPIRV transpiler for introspection, use gl_VertexIndex |
| // instead of gl_VertexID. |
| glsl << "#ifndef GL_EXT_shader_pixel_local_storage\n"; |
| glsl << "#define gl_VertexID gl_VertexIndex\n"; |
| glsl << "#endif\n"; |
| glsl << "#define " GLSL_ENABLE_CLIPPING "\n"; |
| BuildLoadStoreEXTGLSL(glsl, LoadStoreActionsEXT::none); |
| m_loadStoreEXTVertexShader = |
| m_loadStoreEXTVertexShaderHandle.compileShaderModule(m_device, |
| glsl.str().c_str(), |
| "glsl-raw"); |
| m_loadStoreEXTUniforms = makeUniformBufferRing(sizeof(float) * 4); |
| } |
| |
| wgpu::BufferDescriptor tessSpanIndexBufferDesc = { |
| .usage = wgpu::BufferUsage::Index, |
| .size = sizeof(pls::kTessSpanIndices), |
| .mappedAtCreation = true, |
| }; |
| m_tessSpanIndexBuffer = m_device.CreateBuffer(&tessSpanIndexBufferDesc); |
| memcpy(m_tessSpanIndexBuffer.GetMappedRange(), |
| pls::kTessSpanIndices, |
| sizeof(pls::kTessSpanIndices)); |
| m_tessSpanIndexBuffer.Unmap(); |
| |
| wgpu::BufferDescriptor patchBufferDesc = { |
| .usage = wgpu::BufferUsage::Vertex, |
| .size = kPatchVertexBufferCount * sizeof(PatchVertex), |
| .mappedAtCreation = true, |
| }; |
| m_pathPatchVertexBuffer = m_device.CreateBuffer(&patchBufferDesc); |
| |
| patchBufferDesc.size = (kPatchIndexBufferCount * sizeof(uint16_t)); |
| // WebGPU buffer sizes must be multiples of 4. |
| patchBufferDesc.size = math::round_up_to_multiple_of<4>(patchBufferDesc.size); |
| patchBufferDesc.usage = wgpu::BufferUsage::Index; |
| m_pathPatchIndexBuffer = m_device.CreateBuffer(&patchBufferDesc); |
| |
| GeneratePatchBufferData( |
| reinterpret_cast<PatchVertex*>(m_pathPatchVertexBuffer.GetMappedRange()), |
| reinterpret_cast<uint16_t*>(m_pathPatchIndexBuffer.GetMappedRange())); |
| |
| m_pathPatchVertexBuffer.Unmap(); |
| m_pathPatchIndexBuffer.Unmap(); |
| |
| wgpu::TextureDescriptor nullImagePaintTextureDesc = { |
| .usage = wgpu::TextureUsage::TextureBinding, |
| .dimension = wgpu::TextureDimension::e2D, |
| .size = {1, 1}, |
| .format = wgpu::TextureFormat::RGBA8Unorm, |
| }; |
| |
| m_nullImagePaintTexture = m_device.CreateTexture(&nullImagePaintTextureDesc); |
| m_nullImagePaintTextureView = m_nullImagePaintTexture.CreateView(); |
| } |
| |
| PLSRenderContextWebGPUImpl::~PLSRenderContextWebGPUImpl() {} |
| |
| PLSRenderTargetWebGPU::PLSRenderTargetWebGPU(wgpu::Device device, |
| wgpu::TextureFormat framebufferFormat, |
| uint32_t width, |
| uint32_t height, |
| wgpu::TextureUsage additionalTextureFlags) : |
| PLSRenderTarget(width, height), m_framebufferFormat(framebufferFormat) |
| { |
| wgpu::TextureDescriptor desc = { |
| .usage = wgpu::TextureUsage::RenderAttachment | additionalTextureFlags, |
| .size = {static_cast<uint32_t>(width), static_cast<uint32_t>(height)}, |
| }; |
| |
| desc.format = wgpu::TextureFormat::R32Uint; |
| m_coverageTexture = device.CreateTexture(&desc); |
| m_clipTexture = device.CreateTexture(&desc); |
| |
| desc.format = m_framebufferFormat; |
| m_originalDstColorTexture = device.CreateTexture(&desc); |
| |
| m_targetTextureView = {}; // Will be configured later by setTargetTexture(). |
| m_coverageTextureView = m_coverageTexture.CreateView(); |
| m_clipTextureView = m_clipTexture.CreateView(); |
| m_originalDstColorTextureView = m_originalDstColorTexture.CreateView(); |
| } |
| |
| void PLSRenderTargetWebGPU::setTargetTextureView(wgpu::TextureView textureView) |
| { |
| m_targetTextureView = textureView; |
| } |
| |
| rcp<PLSRenderTargetWebGPU> PLSRenderContextWebGPUImpl::makeRenderTarget( |
| wgpu::TextureFormat framebufferFormat, |
| uint32_t width, |
| uint32_t height) |
| { |
| return rcp(new PLSRenderTargetWebGPU(m_device, |
| framebufferFormat, |
| width, |
| height, |
| wgpu::TextureUsage::None)); |
| } |
| |
| class RenderBufferWebGPUImpl : public RenderBuffer |
| { |
| public: |
| RenderBufferWebGPUImpl(wgpu::Device device, |
| wgpu::Queue queue, |
| RenderBufferType renderBufferType, |
| RenderBufferFlags renderBufferFlags, |
| size_t sizeInBytes) : |
| RenderBuffer(renderBufferType, renderBufferFlags, sizeInBytes), |
| m_device(device), |
| m_queue(queue) |
| { |
| bool mappedOnceAtInitialization = flags() & RenderBufferFlags::mappedOnceAtInitialization; |
| int bufferCount = mappedOnceAtInitialization ? 1 : pls::kBufferRingSize; |
| wgpu::BufferDescriptor desc = { |
| .usage = type() == RenderBufferType::index ? wgpu::BufferUsage::Index |
| : wgpu::BufferUsage::Vertex, |
| // WebGPU buffer sizes must be multiples of 4. |
| .size = math::round_up_to_multiple_of<4>(sizeInBytes), |
| .mappedAtCreation = mappedOnceAtInitialization, |
| }; |
| if (!mappedOnceAtInitialization) |
| { |
| desc.usage |= wgpu::BufferUsage::CopyDst; |
| } |
| for (int i = 0; i < bufferCount; ++i) |
| { |
| m_buffers[i] = device.CreateBuffer(&desc); |
| } |
| } |
| |
| wgpu::Buffer submittedBuffer() const { return m_buffers[m_submittedBufferIdx]; } |
| |
| protected: |
| void* onMap() override |
| { |
| m_submittedBufferIdx = (m_submittedBufferIdx + 1) % pls::kBufferRingSize; |
| assert(m_buffers[m_submittedBufferIdx] != nullptr); |
| if (flags() & RenderBufferFlags::mappedOnceAtInitialization) |
| { |
| return m_buffers[m_submittedBufferIdx].GetMappedRange(); |
| } |
| else |
| { |
| if (m_stagingBuffer == nullptr) |
| { |
| m_stagingBuffer.reset(new uint8_t[sizeInBytes()]); |
| } |
| return m_stagingBuffer.get(); |
| } |
| } |
| |
| void onUnmap() override |
| { |
| if (flags() & RenderBufferFlags::mappedOnceAtInitialization) |
| { |
| m_buffers[m_submittedBufferIdx].Unmap(); |
| } |
| else |
| { |
| write_buffer(m_queue, |
| m_buffers[m_submittedBufferIdx], |
| m_stagingBuffer.get(), |
| sizeInBytes()); |
| } |
| } |
| |
| private: |
| const wgpu::Device m_device; |
| const wgpu::Queue m_queue; |
| wgpu::Buffer m_buffers[pls::kBufferRingSize]; |
| int m_submittedBufferIdx = -1; |
| std::unique_ptr<uint8_t[]> m_stagingBuffer; |
| }; |
| |
| rcp<RenderBuffer> PLSRenderContextWebGPUImpl::makeRenderBuffer(RenderBufferType type, |
| RenderBufferFlags flags, |
| size_t sizeInBytes) |
| { |
| return make_rcp<RenderBufferWebGPUImpl>(m_device, m_queue, type, flags, sizeInBytes); |
| } |
| |
| class PLSTextureWebGPUImpl : public PLSTexture |
| { |
| public: |
| PLSTextureWebGPUImpl(wgpu::Device device, |
| wgpu::Queue queue, |
| uint32_t width, |
| uint32_t height, |
| uint32_t mipLevelCount, |
| const uint8_t imageDataRGBA[]) : |
| PLSTexture(width, height) |
| { |
| wgpu::TextureDescriptor desc = { |
| .usage = wgpu::TextureUsage::TextureBinding | wgpu::TextureUsage::CopyDst, |
| .dimension = wgpu::TextureDimension::e2D, |
| .size = {width, height}, |
| .format = wgpu::TextureFormat::RGBA8Unorm, |
| // TODO: implement mipmap generation. |
| .mipLevelCount = 1, // mipLevelCount, |
| }; |
| |
| m_texture = device.CreateTexture(&desc); |
| m_textureView = m_texture.CreateView(); |
| |
| // Specify the top-level image in the mipmap chain. |
| // TODO: implement mipmap generation. |
| write_texture(queue, |
| m_texture, |
| width * 4, |
| width, |
| height, |
| imageDataRGBA, |
| height * width * 4); |
| } |
| |
| wgpu::TextureView textureView() const { return m_textureView; } |
| |
| private: |
| wgpu::Texture m_texture; |
| wgpu::TextureView m_textureView; |
| }; |
| |
| rcp<PLSTexture> PLSRenderContextWebGPUImpl::makeImageTexture(uint32_t width, |
| uint32_t height, |
| uint32_t mipLevelCount, |
| const uint8_t imageDataRGBA[]) |
| { |
| return make_rcp<PLSTextureWebGPUImpl>(m_device, |
| m_queue, |
| width, |
| height, |
| mipLevelCount, |
| imageDataRGBA); |
| } |
| |
| class BufferWebGPU : public BufferRing |
| { |
| public: |
| static std::unique_ptr<BufferWebGPU> Make(wgpu::Device device, |
| wgpu::Queue queue, |
| size_t capacityInBytes, |
| wgpu::BufferUsage usage) |
| { |
| return std::make_unique<BufferWebGPU>(device, queue, capacityInBytes, usage); |
| } |
| |
| BufferWebGPU(wgpu::Device device, |
| wgpu::Queue queue, |
| size_t capacityInBytes, |
| wgpu::BufferUsage usage) : |
| BufferRing(std::max<size_t>(capacityInBytes, 1)), m_queue(queue) |
| { |
| wgpu::BufferDescriptor desc = { |
| .usage = wgpu::BufferUsage::CopyDst | usage, |
| .size = capacityInBytes, |
| }; |
| for (int i = 0; i < pls::kBufferRingSize; ++i) |
| { |
| m_buffers[i] = device.CreateBuffer(&desc); |
| } |
| } |
| |
| wgpu::Buffer submittedBuffer() const { return m_buffers[submittedBufferIdx()]; } |
| |
| protected: |
| void* onMapBuffer(int bufferIdx, size_t mapSizeInBytes) override { return shadowBuffer(); } |
| |
| void onUnmapAndSubmitBuffer(int bufferIdx, size_t mapSizeInBytes) override |
| { |
| write_buffer(m_queue, m_buffers[bufferIdx], shadowBuffer(), mapSizeInBytes); |
| } |
| |
| const wgpu::Queue m_queue; |
| wgpu::Buffer m_buffers[kBufferRingSize]; |
| }; |
| |
| // GL TextureFormat to use for a texture that polyfills a storage buffer. |
| static wgpu::TextureFormat storage_texture_format(pls::StorageBufferStructure bufferStructure) |
| { |
| switch (bufferStructure) |
| { |
| case pls::StorageBufferStructure::uint32x4: |
| return wgpu::TextureFormat::RGBA32Uint; |
| case pls::StorageBufferStructure::uint32x2: |
| return wgpu::TextureFormat::RG32Uint; |
| case pls::StorageBufferStructure::float32x4: |
| return wgpu::TextureFormat::RGBA32Float; |
| } |
| RIVE_UNREACHABLE(); |
| } |
| |
| // Buffer ring with a texture used to polyfill storage buffers when they are disabled. |
| class StorageTextureBufferWebGPU : public BufferWebGPU |
| { |
| public: |
| StorageTextureBufferWebGPU(wgpu::Device device, |
| wgpu::Queue queue, |
| size_t capacityInBytes, |
| pls::StorageBufferStructure bufferStructure) : |
| BufferWebGPU(device, |
| queue, |
| pls::StorageTextureBufferSize(capacityInBytes, bufferStructure), |
| wgpu::BufferUsage::CopySrc), |
| m_bufferStructure(bufferStructure) |
| { |
| // Create a texture to mirror the buffer contents. |
| auto [textureWidth, textureHeight] = |
| pls::StorageTextureSize(this->capacityInBytes(), bufferStructure); |
| |
| wgpu::TextureDescriptor desc{ |
| .usage = wgpu::TextureUsage::TextureBinding | wgpu::TextureUsage::CopyDst, |
| .size = {textureWidth, textureHeight}, |
| .format = storage_texture_format(bufferStructure), |
| }; |
| |
| m_texture = device.CreateTexture(&desc); |
| m_textureView = m_texture.CreateView(); |
| } |
| |
| void updateTextureFromBuffer(size_t bindingSizeInBytes, |
| size_t offsetSizeInBytes, |
| wgpu::CommandEncoder encoder) const |
| { |
| auto [updateWidth, updateHeight] = |
| pls::StorageTextureSize(bindingSizeInBytes, m_bufferStructure); |
| wgpu::ImageCopyBuffer srcBuffer = { |
| .layout = |
| { |
| .offset = offsetSizeInBytes, |
| .bytesPerRow = (STORAGE_TEXTURE_WIDTH * |
| pls::StorageBufferElementSizeInBytes(m_bufferStructure)), |
| }, |
| .buffer = submittedBuffer(), |
| }; |
| wgpu::ImageCopyTexture dstTexture = { |
| .texture = m_texture, |
| .origin = {0, 0, 0}, |
| }; |
| wgpu::Extent3D copySize = { |
| .width = updateWidth, |
| .height = updateHeight, |
| }; |
| encoder.CopyBufferToTexture(&srcBuffer, &dstTexture, ©Size); |
| } |
| |
| wgpu::TextureView textureView() const { return m_textureView; } |
| |
| private: |
| const StorageBufferStructure m_bufferStructure; |
| wgpu::Texture m_texture; |
| wgpu::TextureView m_textureView; |
| }; |
| |
| std::unique_ptr<BufferRing> PLSRenderContextWebGPUImpl::makeUniformBufferRing( |
| size_t capacityInBytes) |
| { |
| // Uniform blocks must be multiples of 256 bytes in size. |
| capacityInBytes = std::max<size_t>(capacityInBytes, 256); |
| assert(capacityInBytes % 256 == 0); |
| return std::make_unique<BufferWebGPU>(m_device, |
| m_queue, |
| capacityInBytes, |
| wgpu::BufferUsage::Uniform); |
| } |
| |
| std::unique_ptr<BufferRing> PLSRenderContextWebGPUImpl::makeStorageBufferRing( |
| size_t capacityInBytes, |
| pls::StorageBufferStructure bufferStructure) |
| { |
| if (m_contextOptions.disableStorageBuffers) |
| { |
| return std::make_unique<StorageTextureBufferWebGPU>(m_device, |
| m_queue, |
| capacityInBytes, |
| bufferStructure); |
| } |
| else |
| { |
| return std::make_unique<BufferWebGPU>(m_device, |
| m_queue, |
| capacityInBytes, |
| wgpu::BufferUsage::Storage); |
| } |
| } |
| |
| std::unique_ptr<BufferRing> PLSRenderContextWebGPUImpl::makeVertexBufferRing(size_t capacityInBytes) |
| { |
| return std::make_unique<BufferWebGPU>(m_device, |
| m_queue, |
| capacityInBytes, |
| wgpu::BufferUsage::Vertex); |
| } |
| |
| std::unique_ptr<BufferRing> PLSRenderContextWebGPUImpl::makeTextureTransferBufferRing( |
| size_t capacityInBytes) |
| { |
| return std::make_unique<BufferWebGPU>(m_device, |
| m_queue, |
| capacityInBytes, |
| wgpu::BufferUsage::CopySrc); |
| } |
| |
| void PLSRenderContextWebGPUImpl::resizeGradientTexture(uint32_t width, uint32_t height) |
| { |
| width = std::max(width, 1u); |
| height = std::max(height, 1u); |
| |
| wgpu::TextureDescriptor desc{ |
| .usage = wgpu::TextureUsage::RenderAttachment | wgpu::TextureUsage::TextureBinding | |
| wgpu::TextureUsage::CopyDst, |
| .size = {static_cast<uint32_t>(width), static_cast<uint32_t>(height)}, |
| .format = wgpu::TextureFormat::RGBA8Unorm, |
| }; |
| |
| m_gradientTexture = m_device.CreateTexture(&desc); |
| m_gradientTextureView = m_gradientTexture.CreateView(); |
| } |
| |
| void PLSRenderContextWebGPUImpl::resizeTessellationTexture(uint32_t width, uint32_t height) |
| { |
| width = std::max(width, 1u); |
| height = std::max(height, 1u); |
| |
| wgpu::TextureDescriptor desc{ |
| .usage = wgpu::TextureUsage::RenderAttachment | wgpu::TextureUsage::TextureBinding, |
| .size = {static_cast<uint32_t>(width), static_cast<uint32_t>(height)}, |
| .format = wgpu::TextureFormat::RGBA32Uint, |
| }; |
| |
| m_tessVertexTexture = m_device.CreateTexture(&desc); |
| m_tessVertexTextureView = m_tessVertexTexture.CreateView(); |
| } |
| |
| wgpu::RenderPipeline PLSRenderContextWebGPUImpl::makePLSDrawPipeline( |
| rive::pls::DrawType drawType, |
| wgpu::TextureFormat framebufferFormat, |
| wgpu::ShaderModule vertexShader, |
| wgpu::ShaderModule fragmentShader, |
| EmJsHandle* pipelineJSHandleIfNeeded) |
| { |
| std::vector<wgpu::VertexAttribute> attrs; |
| std::vector<wgpu::VertexBufferLayout> vertexBufferLayouts; |
| switch (drawType) |
| { |
| case DrawType::midpointFanPatches: |
| case DrawType::outerCurvePatches: |
| { |
| attrs = { |
| { |
| .format = wgpu::VertexFormat::Float32x4, |
| .offset = 0, |
| .shaderLocation = 0, |
| }, |
| { |
| .format = wgpu::VertexFormat::Float32x4, |
| .offset = 4 * sizeof(float), |
| .shaderLocation = 1, |
| }, |
| }; |
| |
| vertexBufferLayouts = { |
| { |
| .arrayStride = sizeof(pls::PatchVertex), |
| .stepMode = wgpu::VertexStepMode::Vertex, |
| .attributeCount = std::size(attrs), |
| .attributes = attrs.data(), |
| }, |
| }; |
| break; |
| } |
| case DrawType::interiorTriangulation: |
| { |
| attrs = { |
| { |
| .format = wgpu::VertexFormat::Float32x3, |
| .offset = 0, |
| .shaderLocation = 0, |
| }, |
| }; |
| |
| vertexBufferLayouts = { |
| { |
| .arrayStride = sizeof(pls::TriangleVertex), |
| .stepMode = wgpu::VertexStepMode::Vertex, |
| .attributeCount = std::size(attrs), |
| .attributes = attrs.data(), |
| }, |
| }; |
| break; |
| } |
| case DrawType::imageRect: |
| RIVE_UNREACHABLE(); |
| case DrawType::imageMesh: |
| attrs = { |
| { |
| .format = wgpu::VertexFormat::Float32x2, |
| .offset = 0, |
| .shaderLocation = 0, |
| }, |
| { |
| .format = wgpu::VertexFormat::Float32x2, |
| .offset = 0, |
| .shaderLocation = 1, |
| }, |
| }; |
| |
| vertexBufferLayouts = { |
| { |
| .arrayStride = sizeof(float) * 2, |
| .stepMode = wgpu::VertexStepMode::Vertex, |
| .attributeCount = 1, |
| .attributes = &attrs[0], |
| }, |
| { |
| .arrayStride = sizeof(float) * 2, |
| .stepMode = wgpu::VertexStepMode::Vertex, |
| .attributeCount = 1, |
| .attributes = &attrs[1], |
| }, |
| }; |
| break; |
| case DrawType::plsAtomicInitialize: |
| case DrawType::plsAtomicResolve: |
| case DrawType::stencilClipReset: |
| RIVE_UNREACHABLE(); |
| } |
| |
| wgpu::ColorTargetState colorTargets[] = { |
| {.format = framebufferFormat}, |
| {.format = wgpu::TextureFormat::R32Uint}, |
| {.format = wgpu::TextureFormat::R32Uint}, |
| {.format = framebufferFormat}, |
| }; |
| static_assert(FRAMEBUFFER_PLANE_IDX == 0); |
| static_assert(COVERAGE_PLANE_IDX == 1); |
| static_assert(CLIP_PLANE_IDX == 2); |
| static_assert(ORIGINAL_DST_COLOR_PLANE_IDX == 3); |
| |
| wgpu::FragmentState fragmentState = { |
| .module = fragmentShader, |
| .entryPoint = "main", |
| .targetCount = static_cast<size_t>( |
| m_contextOptions.plsType == PixelLocalStorageType::EXT_shader_pixel_local_storage ? 1 |
| : 4), |
| .targets = colorTargets, |
| }; |
| |
| wgpu::RenderPipelineDescriptor desc = { |
| .layout = m_drawPipelineLayout, |
| .vertex = |
| { |
| .module = vertexShader, |
| .entryPoint = "main", |
| .bufferCount = std::size(vertexBufferLayouts), |
| .buffers = vertexBufferLayouts.data(), |
| }, |
| .primitive = |
| { |
| .topology = wgpu::PrimitiveTopology::TriangleList, |
| .frontFace = m_frontFaceForOnScreenDraws, |
| .cullMode = |
| drawType != DrawType::imageMesh ? wgpu::CullMode::Back : wgpu::CullMode::None, |
| }, |
| .fragment = &fragmentState, |
| }; |
| |
| return m_device.CreateRenderPipeline(&desc); |
| } |
| |
| wgpu::RenderPassEncoder PLSRenderContextWebGPUImpl::makePLSRenderPass( |
| wgpu::CommandEncoder encoder, |
| const PLSRenderTargetWebGPU* renderTarget, |
| wgpu::LoadOp loadOp, |
| const wgpu::Color& clearColor, |
| EmJsHandle* renderPassJSHandleIfNeeded) |
| { |
| wgpu::RenderPassColorAttachment plsAttachments[4] = { |
| { |
| // framebuffer |
| .view = renderTarget->m_targetTextureView, |
| .loadOp = loadOp, |
| .storeOp = wgpu::StoreOp::Store, |
| .clearValue = clearColor, |
| }, |
| { |
| // coverage |
| .view = renderTarget->m_coverageTextureView, |
| .loadOp = wgpu::LoadOp::Clear, |
| .storeOp = wgpu::StoreOp::Discard, |
| .clearValue = {}, |
| }, |
| { |
| // clip |
| .view = renderTarget->m_clipTextureView, |
| .loadOp = wgpu::LoadOp::Clear, |
| .storeOp = wgpu::StoreOp::Discard, |
| .clearValue = {}, |
| }, |
| { |
| // originalDstColor |
| .view = renderTarget->m_originalDstColorTextureView, |
| .loadOp = wgpu::LoadOp::Clear, |
| .storeOp = wgpu::StoreOp::Discard, |
| .clearValue = {}, |
| }, |
| }; |
| static_assert(FRAMEBUFFER_PLANE_IDX == 0); |
| static_assert(COVERAGE_PLANE_IDX == 1); |
| static_assert(CLIP_PLANE_IDX == 2); |
| static_assert(ORIGINAL_DST_COLOR_PLANE_IDX == 3); |
| |
| wgpu::RenderPassDescriptor passDesc = { |
| .colorAttachmentCount = static_cast<size_t>( |
| m_contextOptions.plsType == PixelLocalStorageType::EXT_shader_pixel_local_storage ? 1 |
| : 4), |
| .colorAttachments = plsAttachments, |
| }; |
| |
| return encoder.BeginRenderPass(&passDesc); |
| } |
| |
| static wgpu::Buffer webgpu_buffer(const BufferRing* bufferRing) |
| { |
| assert(bufferRing != nullptr); |
| return static_cast<const BufferWebGPU*>(bufferRing)->submittedBuffer(); |
| } |
| |
| template <typename HighLevelStruct> |
| void update_webgpu_storage_texture(const BufferRing* bufferRing, |
| size_t bindingCount, |
| size_t firstElement, |
| wgpu::CommandEncoder encoder) |
| { |
| assert(bufferRing != nullptr); |
| auto storageTextureBuffer = static_cast<const StorageTextureBufferWebGPU*>(bufferRing); |
| storageTextureBuffer->updateTextureFromBuffer(bindingCount * sizeof(HighLevelStruct), |
| firstElement * sizeof(HighLevelStruct), |
| encoder); |
| } |
| |
| wgpu::TextureView webgpu_storage_texture_view(const BufferRing* bufferRing) |
| { |
| assert(bufferRing != nullptr); |
| return static_cast<const StorageTextureBufferWebGPU*>(bufferRing)->textureView(); |
| } |
| |
| void PLSRenderContextWebGPUImpl::flush(const FlushDescriptor& desc) |
| { |
| auto* renderTarget = static_cast<const PLSRenderTargetWebGPU*>(desc.renderTarget); |
| wgpu::CommandEncoder encoder = m_device.CreateCommandEncoder(); |
| |
| // If storage buffers are disabled, copy their contents to textures. |
| if (m_contextOptions.disableStorageBuffers) |
| { |
| if (desc.pathCount > 0) |
| { |
| update_webgpu_storage_texture<pls::PathData>(pathBufferRing(), |
| desc.pathCount, |
| desc.firstPath, |
| encoder); |
| update_webgpu_storage_texture<pls::PaintData>(paintBufferRing(), |
| desc.pathCount, |
| desc.firstPaint, |
| encoder); |
| update_webgpu_storage_texture<pls::PaintAuxData>(paintAuxBufferRing(), |
| desc.pathCount, |
| desc.firstPaintAux, |
| encoder); |
| } |
| if (desc.contourCount > 0) |
| { |
| update_webgpu_storage_texture<pls::ContourData>(contourBufferRing(), |
| desc.contourCount, |
| desc.firstContour, |
| encoder); |
| } |
| } |
| |
| // Render the complex color ramps to the gradient texture. |
| if (desc.complexGradSpanCount > 0) |
| { |
| wgpu::BindGroupEntry bindingEntries[] = { |
| { |
| .binding = FLUSH_UNIFORM_BUFFER_IDX, |
| .buffer = webgpu_buffer(flushUniformBufferRing()), |
| .offset = desc.flushUniformDataOffsetInBytes, |
| }, |
| }; |
| |
| wgpu::BindGroupDescriptor bindGroupDesc = { |
| .layout = m_colorRampPipeline->bindGroupLayout(), |
| .entryCount = std::size(bindingEntries), |
| .entries = bindingEntries, |
| }; |
| |
| wgpu::BindGroup bindings = m_device.CreateBindGroup(&bindGroupDesc); |
| |
| wgpu::RenderPassColorAttachment attachment = { |
| .view = m_gradientTextureView, |
| .loadOp = wgpu::LoadOp::Clear, |
| .storeOp = wgpu::StoreOp::Store, |
| .clearValue = {}, |
| }; |
| |
| wgpu::RenderPassDescriptor gradPassDesc = { |
| .colorAttachmentCount = 1, |
| .colorAttachments = &attachment, |
| }; |
| |
| wgpu::RenderPassEncoder gradPass = encoder.BeginRenderPass(&gradPassDesc); |
| gradPass.SetViewport(0.f, |
| static_cast<double>(desc.complexGradRowsTop), |
| pls::kGradTextureWidth, |
| static_cast<float>(desc.complexGradRowsHeight), |
| 0.0, |
| 1.0); |
| gradPass.SetPipeline(m_colorRampPipeline->renderPipeline()); |
| gradPass.SetVertexBuffer(0, webgpu_buffer(gradSpanBufferRing())); |
| gradPass.SetBindGroup(0, bindings); |
| gradPass.Draw(4, desc.complexGradSpanCount, 0, desc.firstComplexGradSpan); |
| gradPass.End(); |
| } |
| |
| // Copy the simple color ramps to the gradient texture. |
| if (desc.simpleGradTexelsHeight > 0) |
| { |
| wgpu::ImageCopyBuffer srcBuffer = { |
| .layout = |
| { |
| .offset = desc.simpleGradDataOffsetInBytes, |
| .bytesPerRow = pls::kGradTextureWidth * 4, |
| }, |
| .buffer = webgpu_buffer(simpleColorRampsBufferRing()), |
| }; |
| wgpu::ImageCopyTexture dstTexture = { |
| .texture = m_gradientTexture, |
| .origin = {0, 0, 0}, |
| }; |
| wgpu::Extent3D copySize = { |
| .width = desc.simpleGradTexelsWidth, |
| .height = desc.simpleGradTexelsHeight, |
| }; |
| encoder.CopyBufferToTexture(&srcBuffer, &dstTexture, ©Size); |
| } |
| |
| // Tessellate all curves into vertices in the tessellation texture. |
| if (desc.tessVertexSpanCount > 0) |
| { |
| wgpu::BindGroupEntry bindingEntries[] = { |
| m_contextOptions.disableStorageBuffers ? |
| wgpu::BindGroupEntry{ |
| .binding = PATH_BUFFER_IDX, |
| .textureView = webgpu_storage_texture_view(pathBufferRing()) |
| } : |
| wgpu::BindGroupEntry{ |
| .binding = PATH_BUFFER_IDX, |
| .buffer = webgpu_buffer(pathBufferRing()), |
| .offset = desc.firstPath * sizeof(pls::PathData), |
| }, |
| m_contextOptions.disableStorageBuffers ? |
| wgpu::BindGroupEntry{ |
| .binding = CONTOUR_BUFFER_IDX, |
| .textureView = webgpu_storage_texture_view(contourBufferRing()), |
| } : |
| wgpu::BindGroupEntry{ |
| .binding = CONTOUR_BUFFER_IDX, |
| .buffer = webgpu_buffer(contourBufferRing()), |
| .offset = desc.firstContour * sizeof(pls::ContourData), |
| }, |
| { |
| .binding = FLUSH_UNIFORM_BUFFER_IDX, |
| .buffer = webgpu_buffer(flushUniformBufferRing()), |
| .offset = desc.flushUniformDataOffsetInBytes, |
| }, |
| }; |
| |
| wgpu::BindGroupDescriptor bindGroupDesc = { |
| .layout = m_tessellatePipeline->bindGroupLayout(), |
| .entryCount = std::size(bindingEntries), |
| .entries = bindingEntries, |
| }; |
| |
| wgpu::BindGroup bindings = m_device.CreateBindGroup(&bindGroupDesc); |
| |
| wgpu::RenderPassColorAttachment attachment{ |
| .view = m_tessVertexTextureView, |
| .loadOp = wgpu::LoadOp::Clear, |
| .storeOp = wgpu::StoreOp::Store, |
| .clearValue = {}, |
| }; |
| |
| wgpu::RenderPassDescriptor tessPassDesc = { |
| .colorAttachmentCount = 1, |
| .colorAttachments = &attachment, |
| }; |
| |
| wgpu::RenderPassEncoder tessPass = encoder.BeginRenderPass(&tessPassDesc); |
| tessPass.SetViewport(0.f, |
| 0.f, |
| pls::kTessTextureWidth, |
| static_cast<float>(desc.tessDataHeight), |
| 0.0, |
| 1.0); |
| tessPass.SetPipeline(m_tessellatePipeline->renderPipeline()); |
| tessPass.SetVertexBuffer(0, webgpu_buffer(tessSpanBufferRing())); |
| tessPass.SetIndexBuffer(m_tessSpanIndexBuffer, wgpu::IndexFormat::Uint16); |
| tessPass.SetBindGroup(0, bindings); |
| tessPass.DrawIndexed(std::size(pls::kTessSpanIndices), |
| desc.tessVertexSpanCount, |
| 0, |
| 0, |
| desc.firstTessVertexSpan); |
| tessPass.End(); |
| } |
| |
| wgpu::LoadOp loadOp; |
| wgpu::Color clearColor; |
| if (desc.colorLoadAction == LoadAction::clear) |
| { |
| loadOp = wgpu::LoadOp::Clear; |
| float cc[4]; |
| UnpackColorToRGBA32F(desc.clearColor, cc); |
| clearColor = {cc[0], cc[1], cc[2], cc[3]}; |
| } |
| else |
| { |
| loadOp = wgpu::LoadOp::Load; |
| } |
| |
| EmJsHandle drawPassJSHandle; |
| wgpu::RenderPassEncoder drawPass = |
| makePLSRenderPass(encoder, renderTarget, loadOp, clearColor, &drawPassJSHandle); |
| drawPass.SetViewport(0.f, 0.f, renderTarget->width(), renderTarget->height(), 0.0, 1.0); |
| |
| bool needsPLSTextureBindings = m_contextOptions.plsType == PixelLocalStorageType::subpassLoad; |
| if (needsPLSTextureBindings) |
| { |
| wgpu::BindGroupEntry plsTextureBindingEntries[] = { |
| { |
| .binding = FRAMEBUFFER_PLANE_IDX, |
| .textureView = renderTarget->m_targetTextureView, |
| }, |
| { |
| .binding = COVERAGE_PLANE_IDX, |
| .textureView = renderTarget->m_coverageTextureView, |
| }, |
| { |
| .binding = CLIP_PLANE_IDX, |
| .textureView = renderTarget->m_clipTextureView, |
| }, |
| { |
| .binding = ORIGINAL_DST_COLOR_PLANE_IDX, |
| .textureView = renderTarget->m_originalDstColorTextureView, |
| }, |
| }; |
| |
| wgpu::BindGroupDescriptor plsTextureBindingsGroupDesc = { |
| .layout = m_drawBindGroupLayouts[PLS_TEXTURE_BINDINGS_SET], |
| .entryCount = std::size(plsTextureBindingEntries), |
| .entries = plsTextureBindingEntries, |
| }; |
| |
| wgpu::BindGroup plsTextureBindings = m_device.CreateBindGroup(&plsTextureBindingsGroupDesc); |
| drawPass.SetBindGroup(PLS_TEXTURE_BINDINGS_SET, plsTextureBindings); |
| } |
| |
| if (m_contextOptions.plsType == PixelLocalStorageType::EXT_shader_pixel_local_storage) |
| { |
| enable_shader_pixel_local_storage_ext(drawPass, true); |
| |
| // Draw the load action for EXT_shader_pixel_local_storage. |
| std::array<float, 4> clearColor; |
| LoadStoreActionsEXT loadActions = pls::BuildLoadActionsEXT(desc, &clearColor); |
| const LoadStoreEXTPipeline& loadPipeline = |
| m_loadStoreEXTPipelines |
| .try_emplace(loadActions, this, loadActions, renderTarget->framebufferFormat()) |
| .first->second; |
| |
| if (loadActions & LoadStoreActionsEXT::clearColor) |
| { |
| void* uniformData = m_loadStoreEXTUniforms->mapBuffer(sizeof(clearColor)); |
| memcpy(uniformData, clearColor.data(), sizeof(clearColor)); |
| m_loadStoreEXTUniforms->unmapAndSubmitBuffer(); |
| |
| wgpu::BindGroupEntry uniformBindingEntries[] = { |
| { |
| .binding = 0, |
| .buffer = webgpu_buffer(m_loadStoreEXTUniforms.get()), |
| }, |
| }; |
| |
| wgpu::BindGroupDescriptor uniformBindGroupDesc = { |
| .layout = loadPipeline.bindGroupLayout(), |
| .entryCount = std::size(uniformBindingEntries), |
| .entries = uniformBindingEntries, |
| }; |
| |
| wgpu::BindGroup uniformBindings = m_device.CreateBindGroup(&uniformBindGroupDesc); |
| drawPass.SetBindGroup(0, uniformBindings); |
| } |
| |
| drawPass.SetPipeline(loadPipeline.renderPipeline(renderTarget->framebufferFormat())); |
| drawPass.Draw(4); |
| } |
| |
| drawPass.SetBindGroup(SAMPLER_BINDINGS_SET, m_samplerBindings); |
| |
| // Execute the DrawList. |
| wgpu::TextureView currentImageTextureView = m_nullImagePaintTextureView; |
| wgpu::BindGroup bindings; |
| bool needsNewBindings = true; |
| for (const DrawBatch& batch : *desc.drawList) |
| { |
| if (batch.elementCount == 0) |
| { |
| continue; |
| } |
| |
| DrawType drawType = batch.drawType; |
| |
| // Bind the appropriate image texture, if any. |
| if (auto imageTexture = static_cast<const PLSTextureWebGPUImpl*>(batch.imageTexture)) |
| { |
| currentImageTextureView = imageTexture->textureView(); |
| needsNewBindings = true; |
| } |
| |
| if (needsNewBindings) |
| { |
| wgpu::BindGroupEntry bindingEntries[] = { |
| { |
| .binding = TESS_VERTEX_TEXTURE_IDX, |
| .textureView = m_tessVertexTextureView, |
| }, |
| { |
| .binding = GRAD_TEXTURE_IDX, |
| .textureView = m_gradientTextureView, |
| }, |
| { |
| .binding = IMAGE_TEXTURE_IDX, |
| .textureView = currentImageTextureView, |
| }, |
| m_contextOptions.disableStorageBuffers ? |
| wgpu::BindGroupEntry{ |
| .binding = PATH_BUFFER_IDX, |
| .textureView = webgpu_storage_texture_view(pathBufferRing()) |
| } : |
| wgpu::BindGroupEntry{ |
| .binding = PATH_BUFFER_IDX, |
| .buffer = webgpu_buffer(pathBufferRing()), |
| .offset = desc.firstPath * sizeof(pls::PathData), |
| }, |
| m_contextOptions.disableStorageBuffers ? |
| wgpu::BindGroupEntry{ |
| .binding = PAINT_BUFFER_IDX, |
| .textureView = webgpu_storage_texture_view(paintBufferRing()), |
| } : |
| wgpu::BindGroupEntry{ |
| .binding = PAINT_BUFFER_IDX, |
| .buffer = webgpu_buffer(paintBufferRing()), |
| .offset = desc.firstPaint * sizeof(pls::PaintData), |
| }, |
| m_contextOptions.disableStorageBuffers ? |
| wgpu::BindGroupEntry{ |
| .binding = PAINT_AUX_BUFFER_IDX, |
| .textureView = webgpu_storage_texture_view(paintAuxBufferRing()), |
| } : |
| wgpu::BindGroupEntry{ |
| .binding = PAINT_AUX_BUFFER_IDX, |
| .buffer = webgpu_buffer(paintAuxBufferRing()), |
| .offset = desc.firstPaintAux * sizeof(pls::PaintAuxData), |
| }, |
| m_contextOptions.disableStorageBuffers ? |
| wgpu::BindGroupEntry{ |
| .binding = CONTOUR_BUFFER_IDX, |
| .textureView = webgpu_storage_texture_view(contourBufferRing()), |
| } : |
| wgpu::BindGroupEntry{ |
| .binding = CONTOUR_BUFFER_IDX, |
| .buffer = webgpu_buffer(contourBufferRing()), |
| .offset = desc.firstContour * sizeof(pls::ContourData), |
| }, |
| { |
| .binding = FLUSH_UNIFORM_BUFFER_IDX, |
| .buffer = webgpu_buffer(flushUniformBufferRing()), |
| .offset = desc.flushUniformDataOffsetInBytes, |
| }, |
| { |
| .binding = IMAGE_DRAW_UNIFORM_BUFFER_IDX, |
| .buffer = webgpu_buffer(imageDrawUniformBufferRing()), |
| .size = sizeof(pls::ImageDrawUniforms), |
| }, |
| }; |
| |
| wgpu::BindGroupDescriptor bindGroupDesc = { |
| .layout = m_drawBindGroupLayouts[0], |
| .entryCount = std::size(bindingEntries), |
| .entries = bindingEntries, |
| }; |
| |
| bindings = m_device.CreateBindGroup(&bindGroupDesc); |
| } |
| |
| if (needsNewBindings || |
| // Image draws always re-bind because they update the dynamic offset to their uniforms. |
| drawType == DrawType::imageRect || drawType == DrawType::imageMesh) |
| { |
| drawPass.SetBindGroup(0, bindings, 1, &batch.imageDrawDataOffset); |
| needsNewBindings = false; |
| } |
| |
| // Setup the pipeline for this specific drawType and shaderFeatures. |
| const DrawPipeline& drawPipeline = |
| m_drawPipelines |
| .try_emplace(pls::ShaderUniqueKey(drawType, |
| batch.shaderFeatures, |
| pls::InterlockMode::rasterOrdering, |
| pls::ShaderMiscFlags::none), |
| this, |
| drawType, |
| batch.shaderFeatures, |
| m_contextOptions) |
| .first->second; |
| drawPass.SetPipeline(drawPipeline.renderPipeline(renderTarget->framebufferFormat())); |
| |
| switch (drawType) |
| { |
| case DrawType::midpointFanPatches: |
| case DrawType::outerCurvePatches: |
| { |
| // Draw PLS patches that connect the tessellation vertices. |
| drawPass.SetVertexBuffer(0, m_pathPatchVertexBuffer); |
| drawPass.SetIndexBuffer(m_pathPatchIndexBuffer, wgpu::IndexFormat::Uint16); |
| drawPass.DrawIndexed(pls::PatchIndexCount(drawType), |
| batch.elementCount, |
| pls::PatchBaseIndex(drawType), |
| 0, |
| batch.baseElement); |
| break; |
| } |
| case DrawType::interiorTriangulation: |
| { |
| drawPass.SetVertexBuffer(0, webgpu_buffer(triangleBufferRing())); |
| drawPass.Draw(batch.elementCount, 1, batch.baseElement); |
| break; |
| } |
| case DrawType::imageRect: |
| RIVE_UNREACHABLE(); |
| case DrawType::imageMesh: |
| { |
| auto vertexBuffer = static_cast<const RenderBufferWebGPUImpl*>(batch.vertexBuffer); |
| auto uvBuffer = static_cast<const RenderBufferWebGPUImpl*>(batch.uvBuffer); |
| auto indexBuffer = static_cast<const RenderBufferWebGPUImpl*>(batch.indexBuffer); |
| drawPass.SetVertexBuffer(0, vertexBuffer->submittedBuffer()); |
| drawPass.SetVertexBuffer(1, uvBuffer->submittedBuffer()); |
| drawPass.SetIndexBuffer(indexBuffer->submittedBuffer(), wgpu::IndexFormat::Uint16); |
| drawPass.DrawIndexed(batch.elementCount, 1, batch.baseElement); |
| break; |
| } |
| case DrawType::plsAtomicInitialize: |
| case DrawType::plsAtomicResolve: |
| case DrawType::stencilClipReset: |
| RIVE_UNREACHABLE(); |
| } |
| } |
| |
| if (m_contextOptions.plsType == PixelLocalStorageType::EXT_shader_pixel_local_storage) |
| { |
| // Draw the store action for EXT_shader_pixel_local_storage. |
| LoadStoreActionsEXT actions = LoadStoreActionsEXT::storeColor; |
| auto it = m_loadStoreEXTPipelines.try_emplace(actions, |
| this, |
| actions, |
| renderTarget->framebufferFormat()); |
| LoadStoreEXTPipeline* storePipeline = &it.first->second; |
| drawPass.SetPipeline(storePipeline->renderPipeline(renderTarget->framebufferFormat())); |
| drawPass.Draw(4); |
| |
| enable_shader_pixel_local_storage_ext(drawPass, false); |
| } |
| |
| drawPass.End(); |
| |
| wgpu::CommandBuffer commands = encoder.Finish(); |
| m_queue.Submit(1, &commands); |
| } |
| |
| std::unique_ptr<PLSRenderContext> PLSRenderContextWebGPUImpl::MakeContext( |
| wgpu::Device device, |
| wgpu::Queue queue, |
| const ContextOptions& contextOptions, |
| const pls::PlatformFeatures& baselinePlatformFeatures) |
| { |
| std::unique_ptr<PLSRenderContextWebGPUImpl> impl; |
| switch (contextOptions.plsType) |
| { |
| case PixelLocalStorageType::subpassLoad: |
| #ifdef RIVE_WEBGPU |
| impl = std::unique_ptr<PLSRenderContextWebGPUImpl>( |
| new PLSRenderContextWebGPUVulkan(device, |
| queue, |
| contextOptions, |
| baselinePlatformFeatures)); |
| break; |
| #endif |
| case PixelLocalStorageType::EXT_shader_pixel_local_storage: |
| case PixelLocalStorageType::none: |
| impl = std::unique_ptr<PLSRenderContextWebGPUImpl>( |
| new PLSRenderContextWebGPUImpl(device, |
| queue, |
| contextOptions, |
| baselinePlatformFeatures)); |
| break; |
| } |
| impl->initGPUObjects(); |
| return std::make_unique<PLSRenderContext>(std::move(impl)); |
| } |
| } // namespace rive::pls |
