public Swapchain CreateSwapchain()
{
Swapchain swapchain;
if (Widget.Backend == GraphicsBackend.OpenGL)
{
swapchain = Widget.GraphicsDevice.MainSwapchain;
}
else
{
// To embed Veldrid in an Eto control, these platform-specific
// versions of CreateSwapchain use the technique outlined here:
//
// https://github.com/mellinoe/veldrid/issues/155
//
var source = SwapchainSource.CreateNSView(Control.Handle);
var renderSize = RenderSize;
swapchain = Widget.GraphicsDevice.ResourceFactory.CreateSwapchain(
new SwapchainDescription(
source,
(uint)renderSize.Width,
(uint)renderSize.Height,
Widget.GraphicsDeviceOptions.SwapchainDepthFormat,
Widget.GraphicsDeviceOptions.SyncToVerticalBlank,
Widget.GraphicsDeviceOptions.SwapchainSrgbFormat));
}
return(swapchain);
}
public override void ViewDidLoad()
{
base.ViewDidLoad();
// device init
GraphicsDeviceOptions options = new GraphicsDeviceOptions(false, null, false, ResourceBindingModel.Improved);
#if DEBUG
options.Debug = true;
#endif
SwapchainSource ss = SwapchainSource.CreateNSView(this.View.Handle);
SwapchainDescription scd = new SwapchainDescription(
ss,
width, height,
PixelFormat.R32_Float,
false);
graphicsDevice = GraphicsDevice.CreateMetal(options);
swapchain = graphicsDevice.ResourceFactory.CreateSwapchain(ref scd);
factory = graphicsDevice.ResourceFactory;
// resource init
CreateSizeDependentResources();
VertexPosition[] quadVertices =
{
new VertexPosition(new Vector3(-1, 1, 0)),
new VertexPosition(new Vector3(1, 1, 0)),
new VertexPosition(new Vector3(-1, -1, 0)),
new VertexPosition(new Vector3(1, -1, 0))
};
uint[] quadIndices = new uint[]
{
0,
1,
2,
1,
3,
2
};
vertexBuffer = factory.CreateBuffer(new BufferDescription(4 * VertexPosition.SizeInBytes, BufferUsage.VertexBuffer));
indexBuffer = factory.CreateBuffer(new BufferDescription(6 * sizeof(uint), BufferUsage.IndexBuffer));
graphicsDevice.UpdateBuffer(vertexBuffer, 0, quadVertices);
graphicsDevice.UpdateBuffer(indexBuffer, 0, quadIndices);
commandList = factory.CreateCommandList();
viewLoaded = true;
displayTimer = NSTimer.CreateRepeatingTimer(60.0 / 1000.0, Render);
displayTimer.Fire();
}
public override void ViewDidMoveToWindow()
{
base.ViewDidMoveToWindow();
var swapchainSource = SwapchainSource.CreateNSView(Handle);
var swapchainDescription = new SwapchainDescription(swapchainSource, (uint)Frame.Width, (uint)Frame.Height, null, true, true);
if (_backend == GraphicsBackend.Metal)
{
GraphicsDevice = GraphicsDevice.CreateMetal(_deviceOptions);
}
MainSwapchain = GraphicsDevice.ResourceFactory.CreateSwapchain(swapchainDescription);
DeviceReady?.Invoke();
_displayLink = new CVDisplayLink();
_displayLink.SetOutputCallback(HandleDisplayLinkOutputCallback);
_displayLink.Start();
}