public void Draw(FrameTracker frameTracker)
{
if (commandbuffers == null || commandbuffers.Length == 0)
{
throw new Exception($"[{nameof(Window)}] No command buffers have been created yet");
}
ThrowIfDisposed();
//If the scene is dirty we re-record the command-buffers
if (scene?.Dirty == true)
{
logicalDevice.WaitIdle();
CreateRenderCommands(scene);
}
int swapchainIndex = swapchain.AcquireNextImage(semaphore: imageAvailableSemaphore);
//Wait for the previous submit of this buffer to be done
waitFences[swapchainIndex].Wait();
waitFences[swapchainIndex].Reset();
//Give the scene a chance to prepare some data for drawing
scene?.PreDraw(frameTracker, swapchainIndex);
//Once we have acquired an image we submit a commandbuffer for writing to it
graphicsQueue.Submit(
waitSemaphore: imageAvailableSemaphore,
waitDstStageMask: PipelineStages.ColorAttachmentOutput,
commandBuffer: commandbuffers[swapchainIndex],
signalSemaphore: renderFinishedSemaphore,
fence: waitFences[swapchainIndex]
);
//Once rendering to the framebuffer is done we can present it
presentQueue.PresentKhr(
waitSemaphore: renderFinishedSemaphore,
swapchain: swapchain,
imageIndex: swapchainIndex);
//Set the window title mostly for debugging purposes
nativeWindow.Title =
$"{title} - {hostDevice.Name} - {nativeWindow.ClientRect.Size} - Fps: {frameTracker.SmoothedFps:N1}";
}
internal int AcquireNextImage(Semaphore sem)
{
int imageIndex = mSwapChain.AcquireNextImage(-1, sem);
return(imageIndex);
}
