public void DrawFrame()
{
this.Device.WaitForFence(this.vkInFlightFences[this.currentFrame], true, UInt64.MaxValue);
uint imageIndex = 0;
try {
imageIndex = this.Device.AcquireNextImageKHR(this.Pipeline.Swapchain,
UInt64.MaxValue, this.vkImageAvailableSemaphores[this.currentFrame]);
} catch (Vk.ResultException result) {
if (result.Result == Vk.Result.ErrorOutOfDateKhr)
{
this.createPipelineWrapper();
return;
}
else
{
throw new VkException("An error occurred while acquiring a swapchain image.", result);
}
}
this.Device.ResetFence(this.vkInFlightFences[this.currentFrame]);
var waitSemaphores = new Vk.Semaphore[] { this.vkImageAvailableSemaphores[this.currentFrame] };
var signalSemaphores = new Vk.Semaphore[] { this.vkRenderFinishedSemaphores[this.currentFrame] };
this.updateUniformBuffer(imageIndex);
var submitInfo = new Vk.SubmitInfo();
submitInfo.CommandBufferCount = 1;
submitInfo.WaitSemaphoreCount = 1;
submitInfo.SignalSemaphoreCount = 1;
submitInfo.CommandBuffers = new Vk.CommandBuffer[] {
this.Pipeline.CommandBuffers[imageIndex]
};
submitInfo.WaitSemaphores = waitSemaphores;
submitInfo.WaitDstStageMask = new Vk.PipelineStageFlags[] {
Vk.PipelineStageFlags.ColorAttachmentOutput
};
submitInfo.SignalSemaphores = signalSemaphores;
try {
this.GraphicsQueue.Submit(new Vk.SubmitInfo[] { submitInfo },
this.vkInFlightFences[this.currentFrame]);
} catch (Vk.ResultException result) {
throw new VkException("An error has occurred while submitting a command buffer.", result);
}
var presentInfo = new Vk.PresentInfoKhr();
presentInfo.WaitSemaphoreCount = 1;
presentInfo.WaitSemaphores = signalSemaphores;
presentInfo.SwapchainCount = 1;
presentInfo.Swapchains = new Vk.SwapchainKhr[] {
this.Pipeline.Swapchain
};
presentInfo.ImageIndices = new uint[] {
imageIndex
};
try {
this.PresentQueue.PresentKHR(presentInfo);
} catch (Vk.ResultException result) {
if (result.Result == Vk.Result.ErrorOutOfDateKhr ||
result.Result == Vk.Result.SuboptimalKhr ||
this.Window.HasBeenResized)
{
this.createPipelineWrapper();
this.Window.HasBeenResized = false;
}
else
{
throw new VkException("An error occurred while presenting an image.", result);
}
}
}