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Added wrapper for frame preparation and submission, including semaphore selection and text overlay

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This commit is contained in:
saschawillems 2016-05-15 20:11:28 +02:00
parent 5266c25c33
commit 1b335ad2c8
3 changed files with 70 additions and 9 deletions
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55
base/vulkanexamplebase.cpp
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@ -664,6 +664,55 @@ void VulkanExampleBase::updateTextOverlay()
textOverlay->endTextUpdate();
}
void VulkanExampleBase::prepareFrame()
{
// Acquire the next image from the swap chaing
VK_CHECK_RESULT(swapChain.acquireNextImage(semaphores.presentComplete, &currentBuffer));
// Submit barrier that transforms color attachment image layout back from khr
submitPostPresentBarrier(swapChain.buffers[currentBuffer].image);
}
void VulkanExampleBase::submitFrame()
{
bool submitTextOverlay = enableTextOverlay && textOverlay->visible;
if (submitTextOverlay)
{
// Wait for color attachment output to finish before rendering the text overlay
VkPipelineStageFlags stageFlags = VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT;
submitInfo.pWaitDstStageMask = &stageFlags;
// Set semaphores
// Wait for render complete semaphore
submitInfo.waitSemaphoreCount = 1;
submitInfo.pWaitSemaphores = &semaphores.renderComplete;
// Signal ready with text overlay complete semaphpre
submitInfo.signalSemaphoreCount = 1;
submitInfo.pSignalSemaphores = &semaphores.textOverlayComplete;
// Submit current text overlay command buffer
submitInfo.commandBufferCount = 1;
submitInfo.pCommandBuffers = &textOverlay->cmdBuffers[currentBuffer];
VK_CHECK_RESULT(vkQueueSubmit(queue, 1, &submitInfo, VK_NULL_HANDLE));
// Reset wait and signal semaphores for rendering next frame
// Wait for swap chain presentation to finish
submitInfo.waitSemaphoreCount = 1;
submitInfo.pWaitSemaphores = &semaphores.presentComplete;
// Signal ready with offscreen semaphore
submitInfo.signalSemaphoreCount = 1;
submitInfo.pSignalSemaphores = &semaphores.renderComplete;
}
// Submit barrier that transforms color attachment to khr presen
submitPrePresentBarrier(swapChain.buffers[currentBuffer].image);
VK_CHECK_RESULT(swapChain.queuePresent(queue, currentBuffer, submitTextOverlay ? semaphores.textOverlayComplete : semaphores.renderComplete));
VK_CHECK_RESULT(vkQueueWaitIdle(queue));
}
VulkanExampleBase::VulkanExampleBase(bool enableValidation)
{
// Check for validation command line flag
@ -1031,6 +1080,12 @@ void VulkanExampleBase::handleMessages(HWND hWnd, UINT uMsg, WPARAM wParam, LPAR
case 0x50:
paused = !paused;
break;
case VK_F1:
if (enableTextOverlay)
{
textOverlay->visible = !textOverlay->visible;
}
break;
case VK_ESCAPE:
exit(0);
break;