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

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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.cpp

• //
  // 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.
  //
  
  #include "libANGLE/renderer/vulkan/RenderTargetVk.h"
  
  #include "libANGLE/renderer/vulkan/CommandGraph.h"
  #include "libANGLE/renderer/vulkan/vk_format_utils.h"
  #include "libANGLE/renderer/vulkan/vk_helpers.h"
  
  namespace rx
  {
  RenderTargetVk::RenderTargetVk(vk::ImageHelper *image,
                                 vk::ImageView *imageView,
                                 vk::CommandGraphResource *resource)
      : mImage(image), mImageView(imageView), mResource(resource)
  {
  }
  
  RenderTargetVk::~RenderTargetVk()
  {
  }
  
  void RenderTargetVk::onColorDraw(vk::CommandGraphResource *framebufferVk,
                                   vk::CommandBuffer *commandBuffer,
                                   vk::RenderPassDesc *renderPassDesc)
  {
      ASSERT(commandBuffer->valid());
      ASSERT(!mImage->getFormat().textureFormat().hasDepthOrStencilBits());
  
      // Store the attachment info in the renderPassDesc.
      renderPassDesc->packColorAttachment(*mImage);
  
      // TODO(jmadill): Use automatic layout transition. http://anglebug.com/2361
      mImage->changeLayoutWithStages(VK_IMAGE_ASPECT_COLOR_BIT,
                                     VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL,
                                     VK_PIPELINE_STAGE_ALL_COMMANDS_BIT,
                                     VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT, commandBuffer);
  
      // Set up dependencies between the RT resource and the Framebuffer.
      mResource->addWriteDependency(framebufferVk);
  }
  
  void RenderTargetVk::onDepthStencilDraw(vk::CommandGraphResource *framebufferVk,
                                          vk::CommandBuffer *commandBuffer,
                                          vk::RenderPassDesc *renderPassDesc)
  {
      ASSERT(commandBuffer->valid());
      ASSERT(mImage->getFormat().textureFormat().hasDepthOrStencilBits());
  
      // Store the attachment info in the renderPassDesc.
      renderPassDesc->packDepthStencilAttachment(*mImage);
  
      // TODO(jmadill): Use automatic layout transition. http://anglebug.com/2361
      const angle::Format &format    = mImage->getFormat().textureFormat();
      VkImageAspectFlags aspectFlags = vk::GetDepthStencilAspectFlags(format);
  
      mImage->changeLayoutWithStages(aspectFlags, VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL,
                                     VK_PIPELINE_STAGE_ALL_COMMANDS_BIT,
                                     VK_PIPELINE_STAGE_LATE_FRAGMENT_TESTS_BIT, commandBuffer);
  
      // Set up dependencies between the RT resource and the Framebuffer.
      mResource->addWriteDependency(framebufferVk);
  }
  
  const vk::ImageHelper &RenderTargetVk::getImage() const
  {
      ASSERT(mImage && mImage->valid());
      return *mImage;
  }
  
  vk::ImageView *RenderTargetVk::getImageView() const
  {
      ASSERT(mImageView && mImageView->valid());
      return mImageView;
  }
  
  vk::CommandGraphResource *RenderTargetVk::getResource() const
  {
      return mResource;
  }
  
  const vk::Format &RenderTargetVk::getImageFormat() const
  {
      ASSERT(mImage && mImage->valid());
      return mImage->getFormat();
  }
  
  const gl::Extents &RenderTargetVk::getImageExtents() const
  {
      ASSERT(mImage && mImage->valid());
      return mImage->getExtents();
  }
  
  void RenderTargetVk::updateSwapchainImage(vk::ImageHelper *image, vk::ImageView *imageView)
  {
      ASSERT(image && image->valid() && imageView && imageView->valid());
      mImage     = image;
      mImageView = imageView;
  }
  
  vk::ImageHelper *RenderTargetVk::getImageForRead(vk::CommandGraphResource *readingResource,
                                                   VkImageLayout layout,
                                                   VkImageAspectFlags aspectFlags,
                                                   vk::CommandBuffer *commandBuffer)
  {
      ASSERT(mImage && mImage->valid());
  
      // TODO(jmadill): Better simultaneous resource access. http://anglebug.com/2679
      mResource->addWriteDependency(readingResource);
  
      mImage->changeLayoutWithStages(aspectFlags, layout, VK_PIPELINE_STAGE_ALL_COMMANDS_BIT,
                                     VK_PIPELINE_STAGE_ALL_COMMANDS_BIT, commandBuffer);
  
      return mImage;
  }
  
  vk::ImageHelper *RenderTargetVk::getImageForWrite(vk::CommandGraphResource *writingResource) const
  {
      ASSERT(mImage && mImage->valid());
      mResource->addWriteDependency(writingResource);
      return mImage;
  }
  
  }  // namespace rx
  

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