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

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• Hash : e4e2d0c5
  Author :
  Date : 2018-06-22T08:25:05
  

  Vulkan: Add RenderTargetVk::getImageForRead.
  
  This helper method will also transition the Image to the correct read
  layout. We will need to revisit the implementation when working on
  simulatenous read.
  
  Bug: angleproject:2539
  Change-Id: Id61404460f3ef0dbb054e6ac2dfc0b59adb78402
  Reviewed-on: https://chromium-review.googlesource.com/1108378
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Luc Ferron <lucferron@chromium.org>
  

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• src/libANGLE/renderer/vulkan/RenderTargetVk.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.
  //
  // RenderTargetVk:
  //   Wrapper around a Vulkan renderable resource, using an ImageView.
  //
  
  #ifndef LIBANGLE_RENDERER_VULKAN_RENDERTARGETVK_H_
  #define LIBANGLE_RENDERER_VULKAN_RENDERTARGETVK_H_
  
  #include <vulkan/vulkan.h>
  
  #include "libANGLE/FramebufferAttachment.h"
  #include "libANGLE/renderer/renderer_utils.h"
  
  namespace rx
  {
  namespace vk
  {
  class CommandBuffer;
  class CommandGraphResource;
  struct Format;
  class ImageHelper;
  class ImageView;
  class RenderPassDesc;
  }  // namespace vk
  
  // This is a very light-weight class that does not own to the resources it points to.
  // It's meant only to copy across some information from a FramebufferAttachment to the
  // business rendering logic. It stores Images and ImageView by pointer for performance.
  class RenderTargetVk final : public FramebufferAttachmentRenderTarget
  {
    public:
      RenderTargetVk(vk::ImageHelper *image,
                     vk::ImageView *imageView,
                     vk::CommandGraphResource *resource);
      ~RenderTargetVk();
  
      // Note: RenderTargets should be called in order, with the depth/stencil onRender last.
      void onColorDraw(vk::CommandGraphResource *framebufferVk,
                       vk::CommandBuffer *commandBuffer,
                       vk::RenderPassDesc *renderPassDesc);
      void onDepthStencilDraw(vk::CommandGraphResource *framebufferVk,
                              vk::CommandBuffer *commandBuffer,
                              vk::RenderPassDesc *renderPassDesc);
  
      const vk::ImageHelper &getImage() const;
  
      // getImageForRead will also transition the resource to the given layout.
      vk::ImageHelper *getImageForRead(vk::CommandGraphResource *readingResource,
                                       VkImageLayout layout,
                                       VkImageAspectFlags aspectFlags,
                                       vk::CommandBuffer *commandBuffer);
      vk::ImageHelper *getImageForWrite(vk::CommandGraphResource *writingResource) const;
      vk::ImageView *getImageView() const;
      vk::CommandGraphResource *getResource() const;
  
      const vk::Format &getImageFormat() const;
      const gl::Extents &getImageExtents() const;
  
      // Special mutator for Surface RenderTargets. Allows the Framebuffer to keep a single
      // RenderTargetVk pointer.
      void updateSwapchainImage(vk::ImageHelper *image, vk::ImageView *imageView);
  
    private:
      vk::ImageHelper *mImage;
      vk::ImageView *mImageView;
      vk::CommandGraphResource *mResource;
  };
  
  }  // namespace rx
  
  #endif  // LIBANGLE_RENDERER_VULKAN_RENDERTARGETVK_H_
  

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