Wie kann in meinem Vulkan -Programm die Synchronisation implementiert werden, um zu vermeiden, dass das Bild in falscher ⇐ C++

[Anonymous]

Ich schreibe ein Vulkan -Programm.
Ich habe ein Problem damit, dass das Bild manchmal in falscher Reihenfolge angezeigt wird. Ich habe 2 Frames im Flug (max_frames_in_flight) und 3 Bilder (swapchainsupport.capabilities.minimageCount + 1). Schleife: < /p>
// main loop content (simplified)
vcSwapChain->acquireNextImage(&currentImageIndex);
//... Do render stuff, set command buffer
vcSwapChain->submitCommandBuffers(&commandBuffer, &currentImageIndex);
< /code>
VkResult FwSwapChain::acquireNextImage(uint32_t* imageIndex) {
vkWaitForFences(device.getDevice(), 2, frameInFlightFences.data(), VK_TRUE, UINT64_MAX);

VkResult result = vkAcquireNextImageKHR(device.getDevice(), vkSwapChain, UINT64_MAX, imageAvailableSemaphores[currentFrame], VK_NULL_HANDLE, imageIndex);

return result;
}
< /code>
VkResult FwSwapChain::submitCommandBuffers(const VkCommandBuffer* buffers, uint32_t* imageIndex) {
VkSubmitInfo submitInfo = {};
submitInfo.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;

VkSemaphore waitSemaphores[] = { imageAvailableSemaphores[currentFrame] };
VkPipelineStageFlags waitStages[] = { VK_PIPELINE_STAGE_COLOR_ATTACHMENT_OUTPUT_BIT };
submitInfo.waitSemaphoreCount = 1;
submitInfo.pWaitSemaphores = waitSemaphores;
submitInfo.pWaitDstStageMask = waitStages;

submitInfo.commandBufferCount = 1;
submitInfo.pCommandBuffers = buffers;

VkSemaphore signalSemaphores[] = { renderFinishedSemaphores[currentFrame] };
submitInfo.signalSemaphoreCount = 1;
submitInfo.pSignalSemaphores = signalSemaphores;

vkResetFences(device.getDevice(), 1, &frameInFlightFences[currentFrame]);
if (vkQueueSubmit(device.getGraphicsQueue(), 1, &submitInfo, frameInFlightFences[currentFrame]) != VK_SUCCESS) {
throw std::runtime_error("failed to submit draw command buffer!");
}

VkPresentInfoKHR presentInfo = {};
presentInfo.sType = VK_STRUCTURE_TYPE_PRESENT_INFO_KHR;

presentInfo.waitSemaphoreCount = 1;
presentInfo.pWaitSemaphores = signalSemaphores;

VkSwapchainKHR swapChains[] = { vkSwapChain };
presentInfo.swapchainCount = 1;
presentInfo.pSwapchains = swapChains;

presentInfo.pImageIndices = imageIndex;

auto result = vkQueuePresentKHR(device.getPresentQueue(), &presentInfo);

currentFrame = (currentFrame + 1) % MAX_FRAMES_IN_FLIGHT;

return result;
}
< /code>
If i set MAX_FRAMES_IN_FLIGHT to 1, then I haven't the problem.