kc3-lang/angle/src/libANGLE/renderer/metal/FrameBufferMtl.h

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• Hash : 1033d55d
  Author :
  Date : 2020-04-07T14:01:24
  

  Pass binding enum to Framebuffer::syncState.
  
  Will allow us to determine if we're clearing the read or draw FBO. Then
  we can stash clears for the draw FBO only and issue them immediately
  for the read FBO in the Vulkan back-end.
  
  Bug: angleproject:4517
  Change-Id: Ifc043317d6156a75749b13f9d2c44a17e14ee378
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2139997
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Cody Northrop <cnorthrop@google.com>
  Reviewed-by: Tim Van Patten <timvp@google.com>
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  

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• src/libANGLE/renderer/metal/FrameBufferMtl.h

• //
  // Copyright 2019 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.
  //
  // FrameBufferMtl.h:
  //    Defines the class interface for FrameBufferMtl, implementing FrameBufferImpl.
  //
  
  #ifndef LIBANGLE_RENDERER_METAL_FRAMEBUFFERMTL_H_
  #define LIBANGLE_RENDERER_METAL_FRAMEBUFFERMTL_H_
  
  #import <Metal/Metal.h>
  
  #include "libANGLE/renderer/FramebufferImpl.h"
  #include "libANGLE/renderer/metal/RenderTargetMtl.h"
  #include "libANGLE/renderer/metal/mtl_render_utils.h"
  
  namespace rx
  {
  class ContextMtl;
  class SurfaceMtl;
  
  class FramebufferMtl : public FramebufferImpl
  {
    public:
      explicit FramebufferMtl(const gl::FramebufferState &state, bool flipY);
      ~FramebufferMtl() override;
      void destroy(const gl::Context *context) 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;
  
      const gl::InternalFormat &getImplementationColorReadFormat(
          const gl::Context *context) const override;
      angle::Result readPixels(const gl::Context *context,
                               const gl::Rectangle &area,
                               GLenum format,
                               GLenum type,
                               void *pixels) override;
  
      angle::Result blit(const gl::Context *context,
                         const gl::Rectangle &sourceArea,
                         const gl::Rectangle &destArea,
                         GLbitfield mask,
                         GLenum filter) override;
  
      bool checkStatus(const gl::Context *context) const override;
  
      angle::Result syncState(const gl::Context *context,
                              GLenum binding,
                              const gl::Framebuffer::DirtyBits &dirtyBits) override;
  
      angle::Result getSamplePosition(const gl::Context *context,
                                      size_t index,
                                      GLfloat *xy) const override;
  
      RenderTargetMtl *getColorReadRenderTarget() const;
  
      bool flipY() const { return mFlipY; }
  
      gl::Rectangle getCompleteRenderArea() const;
  
      const mtl::RenderPassDesc &getRenderPassDesc(ContextMtl *context);
  
      // Call this to notify FramebufferMtl whenever its render pass has started.
      void onStartedDrawingToFrameBuffer(const gl::Context *context);
  
      // The actual area will be adjusted based on framebuffer flipping property.
      gl::Rectangle getReadPixelArea(const gl::Rectangle &glArea);
  
      // NOTE: this method doesn't do the flipping of area. Caller must do it if needed before
      // callling this. See getReadPixelsArea().
      angle::Result readPixelsImpl(const gl::Context *context,
                                   const gl::Rectangle &area,
                                   const PackPixelsParams &packPixelsParams,
                                   RenderTargetMtl *renderTarget,
                                   uint8_t *pixels);
  
    private:
      void reset();
      angle::Result invalidateImpl(ContextMtl *contextMtl, size_t count, const GLenum *attachments);
      angle::Result clearImpl(const gl::Context *context,
                              gl::DrawBufferMask clearColorBuffers,
                              mtl::ClearRectParams *clearOpts);
  
      angle::Result clearWithLoadOp(const gl::Context *context,
                                    gl::DrawBufferMask clearColorBuffers,
                                    const mtl::ClearRectParams &clearOpts);
  
      angle::Result clearWithDraw(const gl::Context *context,
                                  gl::DrawBufferMask clearColorBuffers,
                                  const mtl::ClearRectParams &clearOpts);
  
      angle::Result prepareRenderPass(const gl::Context *context,
                                      gl::DrawBufferMask drawColorBuffers,
                                      mtl::RenderPassDesc *descOut);
  
      void overrideClearColor(const mtl::TextureRef &texture,
                              MTLClearColor clearColor,
                              MTLClearColor *colorOut);
  
      angle::Result updateColorRenderTarget(const gl::Context *context, size_t colorIndexGL);
      angle::Result updateDepthRenderTarget(const gl::Context *context);
      angle::Result updateStencilRenderTarget(const gl::Context *context);
      angle::Result updateCachedRenderTarget(const gl::Context *context,
                                             const gl::FramebufferAttachment *attachment,
                                             RenderTargetMtl **cachedRenderTarget);
  
      // NOTE: we cannot use RenderTargetCache here because it doesn't support separate
      // depth & stencil attachments as of now. Separate depth & stencil could be useful to
      // save spaces on iOS devices. See doc/PackedDepthStencilSupport.md.
      std::array<RenderTargetMtl *, mtl::kMaxRenderTargets> mColorRenderTargets;
      RenderTargetMtl *mDepthRenderTarget   = nullptr;
      RenderTargetMtl *mStencilRenderTarget = nullptr;
      mtl::RenderPassDesc mRenderPassDesc;
      const bool mFlipY = false;
  };
  }  // namespace rx
  
  #endif /* LIBANGLE_RENDERER_METAL_FRAMEBUFFERMTL_H */
  

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