private void PostProcess(RenderContext context, RenderTarget2D source, RenderTarget2D target)
{
Debug.Assert(source != null);
Debug.Assert(target != null);
var originalSourceTexture = context.SourceTexture;
var originalRenderTarget = context.RenderTarget;
var originalViewport = context.Viewport;
if (Filter != null && Filter.Enabled)
{
context.SourceTexture = source;
context.RenderTarget = source;
context.Viewport = new Viewport(0, 0, source.Width, source.Height);
Filter.Process(context);
}
bool doUpsampling = UseHalfResolution && Numeric.IsGreater(UpsampleDepthSensitivity, 0);
Debug.Assert(doUpsampling && source != target || !doUpsampling && source == target);
if (doUpsampling)
{
if (_upsampleFilter == null)
{
_upsampleFilter = _graphicsService.GetUpsampleFilter();
}
var graphicsDevice = _graphicsService.GraphicsDevice;
var originalBlendState = graphicsDevice.BlendState;
graphicsDevice.BlendState = BlendState.Opaque;
// The previous scene render target is bound as texture.
// --> Switch scene render targets!
context.SourceTexture = source;
context.RenderTarget = target;
context.Viewport = new Viewport(0, 0, target.Width, target.Height);
_upsampleFilter.DepthSensitivity = UpsampleDepthSensitivity;
_upsampleFilter.Mode = UpsamplingMode.Bilateral;
_upsampleFilter.RebuildZBuffer = false;
_upsampleFilter.Process(context);
if (originalBlendState != null)
{
graphicsDevice.BlendState = originalBlendState;
}
}
context.SourceTexture = originalSourceTexture;
context.RenderTarget = originalRenderTarget;
context.Viewport = originalViewport;
}
