private void PerformPrepass(MeshCollection meshes, SpatialCoordinateSystem coordinateSystem)
{
var device = Resources.D3DDevice;
var context = Resources.D3DDeviceContext;
CameraData.ViewProjection = Matrix4x4.Transpose(Camera.GetWorldToCameraMatrix(coordinateSystem));
context.UpdateSubresource(ref CameraData, CameraConstantBuffer);
context.VertexShader.Set(PrepassVertexShader);
context.VertexShader.SetConstantBuffer(2, CameraConstantBuffer);
context.GeometryShader.Set(null);
context.PixelShader.Set(null);
context.ClearDepthStencilView(DepthTarget, DepthStencilClearFlags.Depth, 1.0f, 0);
context.OutputMerger.SetRenderTargets(DepthTarget, (RenderTargetView)null);
context.Rasterizer.SetViewport(0, 0, Camera.Width, Camera.Height);
context.Rasterizer.State = new RasterizerState(device, new RasterizerStateDescription
{
CullMode = CullMode.None,
FillMode = FillMode.Solid
});
meshes.Draw(numberOfIndices =>
{
context.DrawIndexed(numberOfIndices, 0, 0);
});
context.OutputMerger.SetRenderTargets(null, (RenderTargetView)null);
}
public void Render()
{
if (!Active)
{
return;
}
var device = DeviceResources.D3DDevice;
var context = DeviceResources.D3DDeviceContext;
context.VertexShader.Set(VertexShader);
context.PixelShader.Set(PixelShader);
context.PixelShader.SetShaderResource(0, CubeMap.ShaderResourceView);
Meshes.Draw(numberOfIndices =>
{
context.DrawIndexedInstanced(numberOfIndices, 2, 0, 0, 0);
});
context.PixelShader.SetShaderResource(0, null);
if (CubeMapUpdateRequired && !Paused)
{
CameraData.ViewProjection = Matrix4x4.Transpose(PhysicalCamera.GetWorldToCameraMatrix(CoordinateSystem));
context.UpdateSubresource(ref CameraData, CameraConstantBuffer);
CameraDirectionData.Vector = PhysicalCamera.Forward;
context.UpdateSubresource(ref CameraDirectionData, CameraDirectionConstantBuffer);
context.VertexShader.Set(CubeVertexShader);
context.VertexShader.SetConstantBuffer(1, CubeMap.CubeArrayBuffer);
context.VertexShader.SetConstantBuffer(2, CameraConstantBuffer);
context.PixelShader.Set(CubePixelShader);
var cameraTexture = PhysicalCamera.AcquireTexture();
if (cameraTexture == null)
{
return;
}
var luminanceView = new ShaderResourceView(device, cameraTexture, new ShaderResourceViewDescription()
{
Format = SharpDX.DXGI.Format.R8_UInt,
Dimension = SharpDX.Direct3D.ShaderResourceViewDimension.Texture2D,
Texture2D = new ShaderResourceViewDescription.Texture2DResource()
{
MipLevels = 1
}
});
var chrominanceView = new ShaderResourceView(device, cameraTexture, new ShaderResourceViewDescription()
{
Format = SharpDX.DXGI.Format.R8G8_UInt,
Dimension = SharpDX.Direct3D.ShaderResourceViewDimension.Texture2D,
Texture2D = new ShaderResourceViewDescription.Texture2DResource()
{
MipLevels = 1
}
});
context.PixelShader.SetShaderResource(0, luminanceView);
context.PixelShader.SetShaderResource(1, chrominanceView);
context.PixelShader.SetConstantBuffer(3, CameraDirectionConstantBuffer);
context.Rasterizer.SetViewport(0.0f, 0.0f, CubeMap.Resolution, CubeMap.Resolution);
context.Rasterizer.State = new RasterizerState(device, new RasterizerStateDescription()
{
CullMode = CullMode.None,
FillMode = FillMode.Solid
});
var blendDescription = new BlendStateDescription();
for (int i = 0; i < 6; i++)
{
blendDescription.RenderTarget[i].IsBlendEnabled = true;
blendDescription.RenderTarget[i].SourceBlend = BlendOption.SourceAlpha;
blendDescription.RenderTarget[i].DestinationBlend = BlendOption.InverseSourceAlpha;
blendDescription.RenderTarget[i].SourceAlphaBlend = BlendOption.One;
blendDescription.RenderTarget[i].DestinationAlphaBlend = BlendOption.Zero;
blendDescription.RenderTarget[i].BlendOperation = BlendOperation.Add;
blendDescription.RenderTarget[i].AlphaBlendOperation = BlendOperation.Add;
blendDescription.RenderTarget[i].RenderTargetWriteMask = ColorWriteMaskFlags.All;
}
context.OutputMerger.BlendState = new BlendState(device, blendDescription);
context.OutputMerger.SetRenderTargets(CubeMap.DepthStencilView, CubeMap.RenderTargetView);
context.ClearDepthStencilView(CubeMap.DepthStencilView, DepthStencilClearFlags.Depth, 1.0f, 0);
Meshes.Draw(numberOfIndices =>
{
context.DrawIndexedInstanced(numberOfIndices, 6, 0, 0, 0);
});
luminanceView.Dispose();
chrominanceView.Dispose();
PhysicalCamera.ReleaseTexture();
CubeMapUpdateRequired = false;
}
}