pipeline_barrier

pipeline_barrier.cpp

...

			VkBufferImageCopy copyRegion{};
			copyRegion.bufferOffset = 0;
			copyRegion.bufferRowLength = 0;
			copyRegion.bufferImageHeight = 0;

			copyRegion.imageSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
			copyRegion.imageSubresource.mipLevel = 0;
			copyRegion.imageSubresource.baseArrayLayer = 0;
			copyRegion.imageSubresource.layerCount = 1;

			copyRegion.imageOffset = { 0, 0, 0 };
			copyRegion.imageExtent.width = size_x;
			copyRegion.imageExtent.height = size_y;
			copyRegion.imageExtent.depth = 1;

			vkCmdCopyImageToBuffer(screenshotCmdBuffer, screenshotStorageImage.image, VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL, screenshotStagingBuffer.buffer, 1, &copyRegion);


			VkBufferMemoryBarrier barrier = {};
			barrier.sType = VK_STRUCTURE_TYPE_BUFFER_MEMORY_BARRIER;
			barrier.srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
			barrier.dstAccessMask = VK_ACCESS_HOST_READ_BIT;
			barrier.buffer = screenshotStagingBuffer.buffer;
			barrier.size = screenshotStagingBuffer.size;

			vkCmdPipelineBarrier(
				screenshotCmdBuffer,
				VK_PIPELINE_STAGE_TRANSFER_BIT, VK_PIPELINE_STAGE_HOST_BIT,
				0,
				0, nullptr,
				1, &barrier,
				0, nullptr
			);


			vulkanDevice->flushCommandBuffer(screenshotCmdBuffer, queue);