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Added function for submitting a pre present image memory barrier, moved barrier setup into functions, removed unnecessary vkQueueWaitIdle

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This commit is contained in:
saschawillems 2016-03-01 18:54:36 +01:00
parent 80c6fc0206
commit cf02e5aa4b
2 changed files with 45 additions and 13 deletions
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48
base/vulkanexamplebase.cpp
View file

@ -109,10 +109,12 @@ void VulkanExampleBase::createCommandBuffers()
VkResult vkRes = vkAllocateCommandBuffers(device, &cmdBufAllocateInfo, drawCmdBuffers.data());
assert(!vkRes);
// Create one command buffer for submitting the
// post present image memory barrier
// Command buffers for submitting present barriers
cmdBufAllocateInfo.commandBufferCount = 1;
// Pre present
vkRes = vkAllocateCommandBuffers(device, &cmdBufAllocateInfo, &prePresentCmdBuffer);
assert(!vkRes);
// Post present
vkRes = vkAllocateCommandBuffers(device, &cmdBufAllocateInfo, &postPresentCmdBuffer);
assert(!vkRes);
}
@ -120,6 +122,7 @@ void VulkanExampleBase::createCommandBuffers()
void VulkanExampleBase::destroyCommandBuffers()
{
vkFreeCommandBuffers(device, cmdPool, (uint32_t)drawCmdBuffers.size(), drawCmdBuffers.data());
vkFreeCommandBuffers(device, cmdPool, 1, &prePresentCmdBuffer);
vkFreeCommandBuffers(device, cmdPool, 1, &postPresentCmdBuffer);
}
@ -347,7 +350,34 @@ void VulkanExampleBase::renderLoop()
#endif
}
// todo : comment
void VulkanExampleBase::submitPrePresentBarrier(VkImage image)
{
VkCommandBufferBeginInfo cmdBufInfo = vkTools::initializers::commandBufferBeginInfo();
VkResult vkRes = vkBeginCommandBuffer(prePresentCmdBuffer, &cmdBufInfo);
assert(!vkRes);
VkImageMemoryBarrier prePresentBarrier = vkTools::prePresentBarrier(image);
vkCmdPipelineBarrier(
prePresentCmdBuffer,
VK_PIPELINE_STAGE_ALL_COMMANDS_BIT,
VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT,
VK_FLAGS_NONE,
0, nullptr, // No memory barriers,
0, nullptr, // No buffer barriers,
1, &prePresentBarrier);
vkRes = vkEndCommandBuffer(prePresentCmdBuffer);
assert(!vkRes);
VkSubmitInfo submitInfo = vkTools::initializers::submitInfo();
submitInfo.commandBufferCount = 1;
submitInfo.pCommandBuffers = &prePresentCmdBuffer;
vkRes = vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE);
assert(!vkRes);
}
void VulkanExampleBase::submitPostPresentBarrier(VkImage image)
{
VkCommandBufferBeginInfo cmdBufInfo = vkTools::initializers::commandBufferBeginInfo();
@ -362,23 +392,19 @@ void VulkanExampleBase::submitPostPresentBarrier(VkImage image)
VK_PIPELINE_STAGE_ALL_COMMANDS_BIT,
VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT,
0,
0, NULL, // No memory barriers,
0, NULL, // No buffer barriers,
0, nullptr, // No memory barriers,
0, nullptr, // No buffer barriers,
1, &postPresentBarrier);
vkRes = vkEndCommandBuffer(postPresentCmdBuffer);
assert(!vkRes);
VkSubmitInfo submitInfo = {};
submitInfo.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
VkSubmitInfo submitInfo = vkTools::initializers::submitInfo();
submitInfo.commandBufferCount = 1;
submitInfo.pCommandBuffers = &postPresentCmdBuffer;
vkRes = vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE);
assert(!vkRes);
vkRes = vkQueueWaitIdle(queue);
assert(!vkRes);
}
VulkanExampleBase::VulkanExampleBase(bool enableValidation)

10
base/vulkanexamplebase.h
View file

@ -68,8 +68,10 @@ protected:
VkCommandPool cmdPool;
// Command buffer used for setup
VkCommandBuffer setupCmdBuffer = VK_NULL_HANDLE;
// Command buffer for submitting a post present barrier
// Command buffer for submitting a post present image barrier
VkCommandBuffer postPresentCmdBuffer = VK_NULL_HANDLE;
// Command buffer for submitting a pre present image barrier
VkCommandBuffer prePresentCmdBuffer = VK_NULL_HANDLE;
// Command buffers used for rendering
std::vector<VkCommandBuffer> drawCmdBuffers;
// Global render pass for frame buffer writes
@ -230,8 +232,12 @@ public:
// Start the main render loop
void renderLoop();
// Submit a pre present image barrier to the queue
// Transforms the (framebuffer) image layout from color attachment to present(khr) for presenting to the swap chain
void submitPrePresentBarrier(VkImage image);
// Submit a post present image barrier to the queue
// Transforms image layout back to color attachment layout
// Transforms the (framebuffer) image layout back from present(khr) to color attachment layout
void submitPostPresentBarrier(VkImage image);
};