/// <summary>Initializes the GUI for this sample.</summary>
/// <param name="application">The hosting <see cref="Application" />.</param>
/// <param name="timeout">The <see cref="TimeSpan" /> after which this sample should stop running.</param>
/// <param name="windowLocation">The <see cref="Vector2" /> that defines the initial window location.</param>
/// <param name="windowSize">The <see cref="Vector2" /> that defines the initial window client rectangle size.</param>
public virtual void Initialize(Application application, TimeSpan timeout, Vector2?windowLocation, Vector2?windowSize)
{
ExceptionUtilities.ThrowIfNull(application);
var uiService = application.UIService;
_window = uiService.DispatcherForCurrentThread.CreateWindow();
_window.SetTitle(Name);
if (windowLocation.HasValue)
{
_window.Relocate(windowLocation.GetValueOrDefault());
}
if (windowSize.HasValue)
{
_window.ResizeClient(windowSize.GetValueOrDefault());
}
_window.Show();
var graphicsService = application.GraphicsService;
var graphicsAdapter = graphicsService.Adapters.First();
var graphicsDevice = graphicsAdapter.CreateDevice();
_graphicsDevice = graphicsDevice;
_renderPass = graphicsDevice.CreateRenderPass(_window, GraphicsFormat.B8G8R8A8_UNORM);
base.Initialize(application, timeout);
}
GraphicsPipeline CreateGraphicsPipeline(GraphicsRenderPass renderPass, string shaderName, string vertexShaderEntryPoint, string pixelShaderEntryPoint)
{
var graphicsDevice = renderPass.Device;
var pipelineCreateOptions = new GraphicsPipelineCreateOptions {
Signature = CreateGraphicsPipelineSignature(graphicsDevice),
PixelShader = CompileShader(graphicsDevice, GraphicsShaderKind.Pixel, shaderName, pixelShaderEntryPoint),
VertexShader = CompileShader(graphicsDevice, GraphicsShaderKind.Vertex, shaderName, vertexShaderEntryPoint),
};
return(renderPass.CreatePipeline(in pipelineCreateOptions));
}
/// <summary>Begins a render pass.</summary>
/// <param name="renderPass">The render pass to begin.</param>
/// <param name="renderTargetClearColor">The color to which the render target should be cleared.</param>
/// <exception cref="ArgumentNullException"><paramref name="renderPass" /> is <c>null</c>.</exception>
/// <exception cref="InvalidOperationException">A render pass is already active.</exception>
/// <exception cref="ObjectDisposedException">The context has been disposed.</exception>
public void BeginRenderPass(GraphicsRenderPass renderPass, ColorRgba renderTargetClearColor)
{
ThrowIfNull(renderPass);
if (Interlocked.CompareExchange(ref _renderPass, renderPass, null) is not null)
{
ThrowForInvalidState(nameof(RenderPass));
}
var d3d12GraphicsCommandList = D3D12GraphicsCommandList;
var renderTarget = renderPass.Swapchain.CurrentRenderTarget;
var d3d12RtvResourceBarrier = D3D12_RESOURCE_BARRIER.InitTransition(renderTarget.D3D12RtvResource, D3D12_RESOURCE_STATE_PRESENT, D3D12_RESOURCE_STATE_RENDER_TARGET);
d3d12GraphicsCommandList->ResourceBarrier(1, &d3d12RtvResourceBarrier);
var d3d12RtvDescriptorHandle = renderTarget.D3D12RtvDescriptorHandle;
d3d12GraphicsCommandList->OMSetRenderTargets(1, &d3d12RtvDescriptorHandle, RTsSingleHandleToDescriptorRange: TRUE, pDepthStencilDescriptor: null);
d3d12GraphicsCommandList->ClearRenderTargetView(d3d12RtvDescriptorHandle, (float *)&renderTargetClearColor, NumRects: 0, pRects: null);
d3d12GraphicsCommandList->IASetPrimitiveTopology(D3D_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
}
/// <summary>Initializes a new instance of the <see cref="GraphicsRenderPassObject" /> class.</summary>
/// <param name="renderPass">The render pass for which the object is being created.</param>
/// <param name="name">The name of the object or <c>null</c> to use <see cref="MemberInfo.Name" />.</param>
/// <exception cref="ArgumentNullException"><paramref name="renderPass" /> is <c>null</c>.</exception>
protected GraphicsRenderPassObject(GraphicsRenderPass renderPass, string?name = null) : base(renderPass.Device, name)
{
_renderPass = renderPass;
}
internal GraphicsPipeline(GraphicsRenderPass renderPass, in GraphicsPipelineCreateOptions createOptions) : base(renderPass)
internal GraphicsSwapchain(GraphicsRenderPass renderPass, in GraphicsSwapchainCreateOptions createOptions) : base(renderPass)
