Render

VulkanExample 构造

vkCreateInstance
vkCreateDebugReportCallbackEXT
vkCreateDevice
vkGetDeviceQueue
vkCreateCommandPool
createBuffer: VBO
createBuffer: IBO
Create framebuffer attachments
- vkCreateImage * 2
  - vkGetImageMemoryRequirements_vkAllocateMemory_vkBindImageMemory
- vkCreateImageView
Create renderpass
- vkCreateRenderPass
- vkCreateFramebuffer
Prepare graphics pipeline
- vkCreateDescriptorSetLayout
- vkCreatePipelineLayout
- vkCreatePipelineCache
- vkCreateGraphicsPipelines
Command buffer creation
- vkAllocateCommandBuffers
- vkBeginCommandBuffer
- vkCmdBeginRenderPass
- vkCmdSetViewport
- vkCmdBindPipeline
- vkCmdBindVertexBuffers
- vkCmdBindIndexBuffer
- vkCmdPushConstants
- vkCmdDrawIndexed
- vkCmdEndRenderPass
- vkEndCommandBuffer
- submitWork: 提交到队列
  - vkCreateFence
  - vkQueueSubmit
  - vkWaitForFences
  - vkDestroyFence
- vkDeviceWaitIdle
保存渲染结果(Copy framebuffer image to host visible image)
- vkCreateImage
- vkGetImageMemoryRequirements_vkAllocateMemory_vkBindImageMemory
- vkAllocateCommandBuffers
- vkBeginCommandBuffer
- insertImageMemoryBarrier
- vkCmdCopyImage
- insertImageMemoryBarrier
- vkEndCommandBuffer
- submitWork
- vkGetImageSubresourceLayout
- vkMapMemory
- 将数据写入本地磁盘(imagedata)
- vkUnmapMemory
- vkFreeMemory
- vkDestroyImage
vkQueueWaitIdle

本节主要讲如何将渲染结果保存到本地硬盘. 即从GPU显存(framebuffer)复制数据到内存的教程. 主要还是使用MemoryBarrier. 没有新东西, 复习了一下vulkan管线.

vkCreateInstance
vkCreateDebugReportCallbackEXT
vkCreateDevice
vkGetDeviceQueue
vkCreateCommandPool
Prepare storage buffers
- 输入数据：std::vector<uint32_t> computeInput
- 输出数据：std::vector<uint32_t> computeOutput
- 没见过的std使用方法
  - std::generate(computeInput.begin(), computeInput.end(), [&n] { return n++; });
Copy input data to VRAM using a staging buffer
- createBuffer
- vkMapMemory
- vkFlushMappedMemoryRanges
- vkUnmapMemory
- createBuffer
- vkAllocateCommandBuffers
- vkBeginCommandBuffer
- vkCmdCopyBuffer
- vkEndCommandBuffer
- vkCreateFence
- vkQueueSubmit
- vkWaitForFences
- vkDestroyFence
- vkFreeCommandBuffers
Prepare compute pipeline
- vkCreateDescriptorPool
- vkCreateDescriptorSetLayout
- vkAllocateDescriptorSets
- writeDescriptorSet
- vkUpdateDescriptorSets
- vkCreatePipelineCache
- vkCreateComputePipelines
- vkAllocateCommandBuffers
- vkCreateFence
Command buffer creation
- vkBeginCommandBuffer
- vkCmdPipelineBarrier
- vkCmdBindPipeline
- vkCmdBindDescriptorSets
- vkCmdDispatch
- vkCmdPipelineBarrier
- Read back to host visible buffer
  - vkCmdCopyBuffer
  - vkCmdPipelineBarrier
- vkEndCommandBuffer
- vkResetFences
- vkQueueSubmit
- vkWaitForFences
- Make device writes visible to the host
  - vkMapMemory
  - vkInvalidateMappedMemoryRanges
  - memcpy
  - vkUnmapMemory
- vkQueueWaitIdle
- LOG(“Compute output:\n”)：控制台输出
- vkDestroyBuffer
- vkFreeMemory

本节主要讲如何将CS计算结果保存到本地硬盘. 与上一节差不多，复习一下CS管线的代码。