kc3-lang/angle/src/libANGLE/renderer/wgpu/FramebufferWgpu.h

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• Hash : 657c8c0a
  Author :
  Date : 2024-06-04T15:16:20
  

  Add optimization to defer clear calls.
  
  This change adds a new SubresourceUpdate struct that will hold either
  an update for a clear call or a texture upload in an ImageHelper's
  update queue.
  
  It also adds logic to defer clear calls similar to Vulkan's,
  where clears are deferred if there is not an active render pass.
  Draw based clears are not yet supported, so the optimization does not
  handle those yet.
  
  Bug: angleproject:8582
  Change-Id: I3ee010fa64745871835d53ce0ccb56e3fdd74550
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/5554984
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  Reviewed-by: Matthew Denton <mpdenton@chromium.org>
  Commit-Queue: Liza Burakova <liza@chromium.org>
  

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• src/libANGLE/renderer/wgpu/FramebufferWgpu.h

• //
  // Copyright 2024 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  // FramebufferWgpu.h:
  //    Defines the class interface for FramebufferWgpu, implementing FramebufferImpl.
  //
  
  #ifndef LIBANGLE_RENDERER_WGPU_FRAMEBUFFERWGPU_H_
  #define LIBANGLE_RENDERER_WGPU_FRAMEBUFFERWGPU_H_
  
  #include "libANGLE/renderer/FramebufferImpl.h"
  #include "libANGLE/renderer/RenderTargetCache.h"
  #include "libANGLE/renderer/wgpu/RenderTargetWgpu.h"
  
  namespace rx
  {
  
  class FramebufferWgpu : public FramebufferImpl
  {
    public:
      FramebufferWgpu(const gl::FramebufferState &state);
      ~FramebufferWgpu() override;
  
      angle::Result discard(const gl::Context *context,
                            size_t count,
                            const GLenum *attachments) override;
      angle::Result invalidate(const gl::Context *context,
                               size_t count,
                               const GLenum *attachments) override;
      angle::Result invalidateSub(const gl::Context *context,
                                  size_t count,
                                  const GLenum *attachments,
                                  const gl::Rectangle &area) override;
  
      angle::Result clear(const gl::Context *context, GLbitfield mask) override;
      angle::Result clearBufferfv(const gl::Context *context,
                                  GLenum buffer,
                                  GLint drawbuffer,
                                  const GLfloat *values) override;
      angle::Result clearBufferuiv(const gl::Context *context,
                                   GLenum buffer,
                                   GLint drawbuffer,
                                   const GLuint *values) override;
      angle::Result clearBufferiv(const gl::Context *context,
                                  GLenum buffer,
                                  GLint drawbuffer,
                                  const GLint *values) override;
      angle::Result clearBufferfi(const gl::Context *context,
                                  GLenum buffer,
                                  GLint drawbuffer,
                                  GLfloat depth,
                                  GLint stencil) override;
  
      angle::Result readPixels(const gl::Context *context,
                               const gl::Rectangle &area,
                               GLenum format,
                               GLenum type,
                               const gl::PixelPackState &pack,
                               gl::Buffer *packBuffer,
                               void *pixels) override;
  
      angle::Result blit(const gl::Context *context,
                         const gl::Rectangle &sourceArea,
                         const gl::Rectangle &destArea,
                         GLbitfield mask,
                         GLenum filter) override;
  
      gl::FramebufferStatus checkStatus(const gl::Context *context) const override;
  
      angle::Result syncState(const gl::Context *context,
                              GLenum binding,
                              const gl::Framebuffer::DirtyBits &dirtyBits,
                              gl::Command command) override;
  
      angle::Result getSamplePosition(const gl::Context *context,
                                      size_t index,
                                      GLfloat *xy) const override;
  
      RenderTargetWgpu *getReadPixelsRenderTarget(const angle::Format &format) const;
  
      void addNewColorAttachments(std::vector<wgpu::RenderPassColorAttachment> newColorAttachments);
  
      angle::Result flushOneColorAttachmentUpdate(const gl::Context *context,
                                                  bool deferClears,
                                                  uint32_t colorIndexGL);
  
      angle::Result flushColorAttachmentUpdates(const gl::Context *context,
                                                gl::DrawBufferMask dirtyColorAttachments,
                                                bool deferClears);
  
      angle::Result flushDeferredClears(ContextWgpu *contextWgpu);
  
    private:
      RenderTargetCache<RenderTargetWgpu> mRenderTargetCache;
      wgpu::RenderPassDescriptor mCurrentRenderPassDesc;
      std::vector<wgpu::RenderPassColorAttachment> mCurrentColorAttachments;
      // Secondary vector to track new clears that are added and should be run in a new render pass
      // during flushColorAttachmentUpdates.
      std::vector<wgpu::RenderPassColorAttachment> mNewColorAttachments;
  
      webgpu::ClearValuesArray mDeferredClears;
  };
  
  }  // namespace rx
  
  #endif  // LIBANGLE_RENDERER_WGPU_FRAMEBUFFERWGPU_H_
  

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