void drawFrame()
{
int imageIndex;
Vulkan.vkAcquireNextImageKHR(device, swapChain, long.MaxValue, imageAvailableSemaphore, null, out imageIndex);
VkSubmitInfo submitInfo = new VkSubmitInfo();
submitInfo.sType = VkStructureType.VK_STRUCTURE_TYPE_SUBMIT_INFO;
VkSemaphore[] waitSemaphores = new VkSemaphore[] { imageAvailableSemaphore };
VkPipelineStageFlagBits[] waitStages = new VkPipelineStageFlagBits[] { VkPipelineStageFlagBits.VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT };
submitInfo.waitSemaphoreCount = 1;
submitInfo.pWaitSemaphores = waitSemaphores;
submitInfo.pWaitDstStageMask = waitStages;
submitInfo.commandBufferCount = 1;
submitInfo.pCommandBuffers = new VkCommandBuffer[] { commandBuffers[imageIndex] };
VkSemaphore[] signalSemaphores = new VkSemaphore[] { renderFinishedSemaphore };
submitInfo.signalSemaphoreCount = 1;
submitInfo.pSignalSemaphores = signalSemaphores;
fpsSubmitQueue.Begin();
VkResult result = Vulkan.vkQueueSubmit(graphicsQueue, 1, new VkSubmitInfo[] { submitInfo }, null);
fpsSubmitQueue.End(); fpsSubmitQueue.DebugPeriodicReport();
if (result != VkResult.VK_SUCCESS)
{
throw Program.Throw("failed to submit draw command buffer!");
}
VkPresentInfoKHR presentInfo = new VkPresentInfoKHR();
presentInfo.sType = VkStructureType.VK_STRUCTURE_TYPE_PRESENT_INFO_KHR;
presentInfo.waitSemaphoreCount = 1;
presentInfo.pWaitSemaphores = signalSemaphores;
VkSwapchainKHR[] swapChains = new VkSwapchainKHR[] { swapChain };
presentInfo.swapchainCount = 1;
presentInfo.pSwapchains = swapChains;
presentInfo.pImageIndices = new int[] { imageIndex };
fpsPresentQueue.Begin();
Vulkan.vkQueuePresentKHR(presentQueue, presentInfo);
fpsPresentQueue.End(); fpsPresentQueue.DebugPeriodicReport();
Vulkan.vkQueueWaitIdle(presentQueue);
}