protected SwapchainData CreateSwapchain(PhysicalDevice physicalDevice, SurfaceKHR surface, uint windowWidth, uint windowHeight)
{
var data = new SwapchainData();
var surfaceFormats = physicalDevice.GetSurfaceFormatsKHR(surface);
var surfaceFormat = surfaceFormats[0].Format;
var surfaceCapabilities = physicalDevice.GetSurfaceCapabilitiesKHR(surface);
var desiredImageCount = Math.Min(surfaceCapabilities.MinImageCount + 1, surfaceCapabilities.MaxImageCount);
SurfaceTransformFlagsKHR preTransform;
if ((surfaceCapabilities.SupportedTransforms & SurfaceTransformFlagsKHR.Identity) != 0)
{
preTransform = SurfaceTransformFlagsKHR.Identity;
}
else
{
preTransform = surfaceCapabilities.CurrentTransform;
}
var presentModes = physicalDevice.GetSurfacePresentModesKHR(surface);
var swapChainPresentMode = PresentModeKHR.Fifo;
if (presentModes.Contains(PresentModeKHR.Mailbox))
{
swapChainPresentMode = PresentModeKHR.Mailbox;
}
else if (presentModes.Contains(PresentModeKHR.Immediate))
{
swapChainPresentMode = PresentModeKHR.Immediate;
}
var imageExtent = new Extent2D(windowWidth, windowHeight);
var swapchainCreateInfo = new SwapchainCreateInfoKHR
{
Surface = surface,
MinImageCount = desiredImageCount,
ImageFormat = surfaceFormat,
ImageExtent = imageExtent,
ImageArrayLayers = 1,
ImageUsage = ImageUsageFlags.ColorAttachment,
ImageSharingMode = SharingMode.Exclusive,
//ImageColorSpace = ColorSpaceKHR.SrgbNonlinear,
QueueFamilyIndices = null,
PreTransform = preTransform,
CompositeAlpha = CompositeAlphaFlagsKHR.Opaque,
PresentMode = swapChainPresentMode,
Clipped = true,
};
data.Swapchain = device.CreateSwapchainKHR(swapchainCreateInfo);
data.ImageFormat = surfaceFormat;
return(data);
}
void OnRenderCallback(Queue queue, CommandBuffer[] cmdBuffer, SwapchainData swapchainData)
{
var semaphoreCreateInfo = new SemaphoreCreateInfo();
var presentSemaphore = device.CreateSemaphore(semaphoreCreateInfo);
semaphoreCreateInfo.Dispose();
var currentBufferIndex = (int)device.AcquireNextImageKHR(swapchainData.Swapchain, ulong.MaxValue, presentSemaphore, null);
SubmitForExecution(queue, presentSemaphore, cmdBuffer[currentBufferIndex]);
// Present the image (display it on the screen)
var presentInfo = new PresentInfoKHR(new[] { swapchainData.Swapchain }, new[] { (uint)currentBufferIndex });
queue.PresentKHR(presentInfo);
presentInfo.Dispose();
queue.WaitIdle(); // wait for execution to finish
device.DestroySemaphore(presentSemaphore);
}
//static int i;
void OnRenderCallback(Queue queue, CommandBuffer[] cmdBuffer, SwapchainData swapchainData, UniformData uniformData, Transform transform)
{
//transform.model *= OpenTK.Matrix4.CreateRotationX(i++);
//CopyUBO(transform, uniformData);
var semaphoreCreateInfo = new SemaphoreCreateInfo();
var presentSemaphore = device.CreateSemaphore(semaphoreCreateInfo);
semaphoreCreateInfo.Dispose();
var currentBufferIndex = (int)device.AcquireNextImageKHR(swapchainData.Swapchain, ulong.MaxValue, presentSemaphore, null);
SubmitForExecution(queue, presentSemaphore, cmdBuffer[currentBufferIndex]);
var presentInfo = new PresentInfoKHR(new[] { swapchainData.Swapchain }, new[] { (uint)currentBufferIndex });
queue.PresentKHR(presentInfo);
presentInfo.Dispose();
queue.WaitIdle();
device.DestroySemaphore(presentSemaphore);
}