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Moved fence wait to make it more clear, create fences in signaled state

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saschawillems 2016-08-14 10:18:43 +02:00
parent 026a602510
commit f4cc6bf5a4
1 changed files with 6 additions and 5 deletions
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11
triangle/triangle.cpp
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@ -185,7 +185,8 @@ public:
// Fences (Used to check draw command buffer completion)
VkFenceCreateInfo fenceCreateInfo = {};
fenceCreateInfo.sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO;
fenceCreateInfo.flags = 0;
// Create in signaled state so we don't wait on first render of each command buffer
fenceCreateInfo.flags = VK_FENCE_CREATE_SIGNALED_BIT;
waitFences.resize(drawCmdBuffers.size());
for (auto& fence : waitFences)
{
@ -330,6 +331,10 @@ public:
// Get next image in the swap chain (back/front buffer)
VK_CHECK_RESULT(swapChain.acquireNextImage(presentCompleteSemaphore, &currentBuffer));
// Use a fence to wait until the command buffer has finished execution before using it again
VK_CHECK_RESULT(vkWaitForFences(device, 1, &waitFences[currentBuffer], VK_TRUE, UINT64_MAX));
VK_CHECK_RESULT(vkResetFences(device, 1, &waitFences[currentBuffer]));
// Pipeline stage at which the queue submission will wait (via pWaitSemaphores)
VkPipelineStageFlags waitStageMask = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
// The submit info structure specifices a command buffer queue submission batch
@ -346,10 +351,6 @@ public:
// Submit to the graphics queue passing a wait fence
VK_CHECK_RESULT(vkQueueSubmit(queue, 1, &submitInfo, waitFences[currentBuffer]));
// Wait until the fence has signaled, which is the case when the command buffer has actually finished execution of all it's commands
VK_CHECK_RESULT(vkWaitForFences(device, 1, &waitFences[currentBuffer], VK_TRUE, UINT64_MAX));
VK_CHECK_RESULT(vkResetFences(device, 1, &waitFences[currentBuffer]));
// Present the current buffer to the swap chain
// Pass the semaphore signaled by the command buffer submission from the submit info as the wait semaphore for swap chain presentation
// This ensures that the image is not presented to the windowing system until all commands have been submitted