kc3-lang/angle/src/libANGLE/renderer/vulkan/FramebufferVk.h

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• Hash : d705f18f
  Author :
  Date : 2020-05-11T13:53:13
  

  Vulkan: Add immediate scissored clears.
  
  This allows us to avoid using draw commands with pipelines for
  scissored clears. This prevents some tests from generating
  large numbers of VkPipelines.
  
  Bug: angleproject:4517
  Bug: angleproject:4617
  Change-Id: Id4a44000078098a60aa89233cfef30b75727d108
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2194473
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Tim Van Patten <timvp@google.com>
  

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• src/libANGLE/renderer/vulkan/FramebufferVk.h

• //
  // Copyright 2016 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.
  //
  // FramebufferVk.h:
  //    Defines the class interface for FramebufferVk, implementing FramebufferImpl.
  //
  
  #ifndef LIBANGLE_RENDERER_VULKAN_FRAMEBUFFERVK_H_
  #define LIBANGLE_RENDERER_VULKAN_FRAMEBUFFERVK_H_
  
  #include "libANGLE/renderer/FramebufferImpl.h"
  #include "libANGLE/renderer/RenderTargetCache.h"
  #include "libANGLE/renderer/vulkan/BufferVk.h"
  #include "libANGLE/renderer/vulkan/ResourceVk.h"
  #include "libANGLE/renderer/vulkan/UtilsVk.h"
  #include "libANGLE/renderer/vulkan/vk_cache_utils.h"
  
  namespace rx
  {
  class RendererVk;
  class RenderTargetVk;
  class WindowSurfaceVk;
  
  class FramebufferVk : public FramebufferImpl
  {
    public:
      // Factory methods so we don't have to use constructors with overloads.
      static FramebufferVk *CreateUserFBO(RendererVk *renderer, const gl::FramebufferState &state);
  
      // The passed-in SurfaceVK must be destroyed after this FBO is destroyed. Our Surface code is
      // ref-counted on the number of 'current' contexts, so we shouldn't get any dangling surface
      // references. See Surface::setIsCurrent(bool).
      static FramebufferVk *CreateDefaultFBO(RendererVk *renderer,
                                             const gl::FramebufferState &state,
                                             WindowSurfaceVk *backbuffer);
  
      ~FramebufferVk() 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;
      RenderTargetVk *getDepthStencilRenderTarget() const;
  
      // Internal helper function for readPixels operations.
      angle::Result readPixelsImpl(ContextVk *contextVk,
                                   const gl::Rectangle &area,
                                   const PackPixelsParams &packPixelsParams,
                                   VkImageAspectFlagBits copyAspectFlags,
                                   RenderTargetVk *renderTarget,
                                   void *pixels);
  
      gl::Extents getReadImageExtents() const;
      gl::Rectangle getCompleteRenderArea() const;
      gl::Rectangle getScissoredRenderArea(ContextVk *contextVk) const;
  
      const gl::DrawBufferMask &getEmulatedAlphaAttachmentMask() const;
      RenderTargetVk *getColorDrawRenderTarget(size_t colorIndex) const;
      RenderTargetVk *getColorReadRenderTarget() const;
  
      angle::Result startNewRenderPass(ContextVk *contextVk,
                                       const gl::Rectangle &renderArea,
                                       vk::CommandBuffer **commandBufferOut);
  
      RenderTargetVk *getFirstRenderTarget() const;
      GLint getSamples() const;
  
      const vk::RenderPassDesc &getRenderPassDesc() const { return mRenderPassDesc; }
      const vk::FramebufferDesc &getFramebufferDesc() const { return mCurrentFramebufferDesc; }
      // We only support depth/stencil packed format and depthstencil attachment always follow all
      // color attachments
      size_t getDepthStencilAttachmentIndexVk() const
      {
          return getState().getEnabledDrawBuffers().count();
      }
  
    private:
      FramebufferVk(RendererVk *renderer,
                    const gl::FramebufferState &state,
                    WindowSurfaceVk *backbuffer);
  
      // The 'in' rectangles must be clipped to the scissor and FBO. The clipping is done in 'blit'.
      angle::Result blitWithCommand(ContextVk *contextVk,
                                    const gl::Rectangle &sourceArea,
                                    const gl::Rectangle &destArea,
                                    RenderTargetVk *readRenderTarget,
                                    RenderTargetVk *drawRenderTarget,
                                    GLenum filter,
                                    bool colorBlit,
                                    bool depthBlit,
                                    bool stencilBlit,
                                    bool flipX,
                                    bool flipY);
  
      // Resolve color with vkCmdResolveImage
      angle::Result resolveColorWithCommand(ContextVk *contextVk,
                                            const UtilsVk::BlitResolveParameters &params,
                                            vk::ImageHelper *srcImage);
  
      angle::Result getFramebuffer(ContextVk *contextVk, vk::Framebuffer **framebufferOut);
  
      angle::Result clearImpl(const gl::Context *context,
                              gl::DrawBufferMask clearColorBuffers,
                              bool clearDepth,
                              bool clearStencil,
                              const VkClearColorValue &clearColorValue,
                              const VkClearDepthStencilValue &clearDepthStencilValue);
  
      angle::Result clearImmediatelyWithRenderPassOp(
          ContextVk *contextVk,
          const gl::Rectangle &clearArea,
          gl::DrawBufferMask clearColorBuffers,
          bool clearDepth,
          bool clearStencil,
          const VkClearColorValue &clearColorValue,
          const VkClearDepthStencilValue &clearDepthStencilValue);
  
      angle::Result clearWithDraw(ContextVk *contextVk,
                                  const gl::Rectangle &clearArea,
                                  gl::DrawBufferMask clearColorBuffers,
                                  bool clearDepth,
                                  bool clearStencil,
                                  VkColorComponentFlags colorMaskFlags,
                                  uint8_t stencilMask,
                                  const VkClearColorValue &clearColorValue,
                                  const VkClearDepthStencilValue &clearDepthStencilValue);
      void clearWithRenderPassOp(gl::DrawBufferMask clearColorBuffers,
                                 bool clearDepth,
                                 bool clearStencil,
                                 const VkClearColorValue &clearColorValue,
                                 const VkClearDepthStencilValue &clearDepthStencilValue);
      void updateActiveColorMasks(size_t colorIndex, bool r, bool g, bool b, bool a);
      void updateRenderPassDesc();
      angle::Result updateColorAttachment(const gl::Context *context,
                                          bool deferClears,
                                          uint32_t colorIndex);
      angle::Result invalidateImpl(ContextVk *contextVk, size_t count, const GLenum *attachments);
      // Release all FramebufferVk objects in the cache and clear cache
      void clearCache(ContextVk *contextVk);
      angle::Result updateDepthStencilAttachment(const gl::Context *context, bool deferClears);
      void updateDepthStencilAttachmentSerial(ContextVk *contextVk);
  
      RenderTargetVk *getReadPixelsRenderTarget(GLenum format) const;
      VkImageAspectFlagBits getReadPixelsAspectFlags(GLenum format) const;
  
      angle::Result flushDeferredClears(ContextVk *contextVk, const gl::Rectangle &renderArea);
      VkClearValue getCorrectedColorClearValue(size_t colorIndexGL,
                                               const VkClearColorValue &clearColor) const;
  
      WindowSurfaceVk *mBackbuffer;
  
      vk::RenderPassDesc mRenderPassDesc;
      vk::FramebufferHelper *mFramebuffer;
      RenderTargetCache<RenderTargetVk> mRenderTargetCache;
  
      // These two variables are used to quickly compute if we need to do a masked clear. If a color
      // channel is masked out, we check against the Framebuffer Attachments (RenderTargets) to see
      // if the masked out channel is present in any of the attachments.
      VkColorComponentFlags mActiveColorComponents;
      gl::DrawBufferMask mActiveColorComponentMasksForClear[4];
      vk::DynamicBuffer mReadPixelBuffer;
  
      // When we draw to the framebuffer, and the real format has an alpha channel but the format of
      // the framebuffer does not, we need to mask out the alpha channel. This DrawBufferMask will
      // contain the mask to apply to the alpha channel when drawing.
      gl::DrawBufferMask mEmulatedAlphaAttachmentMask;
  
      vk::FramebufferDesc mCurrentFramebufferDesc;
      std::unordered_map<vk::FramebufferDesc, vk::FramebufferHelper> mFramebufferCache;
      bool mSupportDepthStencilFeedbackLoops;
  
      vk::ClearValuesArray mDeferredClears;
  };
  }  // namespace rx
  
  #endif  // LIBANGLE_RENDERER_VULKAN_FRAMEBUFFERVK_H_
  

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