Method MakeImageLayoutTransition

libs/drape/vulkan/vulkan_texture.cpp:219–298

}

void VulkanTexture::MakeImageLayoutTransition(VkCommandBuffer commandBuffer, VkImageLayout newLayout,
                                              VkPipelineStageFlags srcStageMask,
                                              VkPipelineStageFlags dstStageMask) const
{
  VkAccessFlags srcAccessMask = 0;
  VkAccessFlags dstAccessMask = 0;

  VkPipelineStageFlags const noAccessMask = VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT | VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT |
                                            VK_PIPELINE_STAGE_ALL_GRAPHICS_BIT | VK_PIPELINE_STAGE_ALL_COMMANDS_BIT;
  VkPipelineStageFlags srcRemainingMask = srcStageMask & ~noAccessMask;
  VkPipelineStageFlags dstRemainingMask = dstStageMask & ~noAccessMask;

  auto const srcTestAndRemoveBit = [&](VkPipelineStageFlagBits stageBit, VkAccessFlags accessBits)
  {
    if (srcStageMask & stageBit)
    {
      srcAccessMask |= accessBits;
      srcRemainingMask &= ~stageBit;
    }
  };

  srcTestAndRemoveBit(VK_PIPELINE_STAGE_LATE_FRAGMENT_TESTS_BIT, VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT);

  srcTestAndRemoveBit(VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT, VK_ACCESS_COLOR_ATTACHMENT_WRITE_BIT);

  srcTestAndRemoveBit(VK_PIPELINE_STAGE_VERTEX_SHADER_BIT, VK_ACCESS_SHADER_READ_BIT);

  srcTestAndRemoveBit(VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT,
                      VK_ACCESS_SHADER_READ_BIT | VK_ACCESS_INPUT_ATTACHMENT_READ_BIT);

  srcTestAndRemoveBit(VK_PIPELINE_STAGE_TRANSFER_BIT, VK_ACCESS_TRANSFER_WRITE_BIT);

  srcTestAndRemoveBit(VK_PIPELINE_STAGE_EARLY_FRAGMENT_TESTS_BIT,
                      VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_READ_BIT | VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT);

  CHECK(srcRemainingMask == 0, ("Not implemented transition for src pipeline stage"));

  auto const dstTestAndRemoveBit = [&](VkPipelineStageFlagBits stageBit, VkAccessFlags accessBits)
  {
    if (dstStageMask & stageBit)
    {
      dstAccessMask |= accessBits;
      dstRemainingMask &= ~stageBit;
    }
  };

  dstTestAndRemoveBit(VK_PIPELINE_STAGE_LATE_FRAGMENT_TESTS_BIT, VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT);

  dstTestAndRemoveBit(VK_PIPELINE_STAGE_EARLY_FRAGMENT_TESTS_BIT,
                      VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_READ_BIT | VK_ACCESS_DEPTH_STENCIL_ATTACHMENT_WRITE_BIT);

  dstTestAndRemoveBit(VK_PIPELINE_STAGE_VERTEX_SHADER_BIT, VK_ACCESS_SHADER_READ_BIT);

  dstTestAndRemoveBit(VK_PIPELINE_STAGE_FRAGMENT_SHADER_BIT,
                      VK_ACCESS_SHADER_READ_BIT | VK_ACCESS_INPUT_ATTACHMENT_READ_BIT);

  dstTestAndRemoveBit(VK_PIPELINE_STAGE_TRANSFER_BIT, VK_ACCESS_TRANSFER_WRITE_BIT);