/// <summary>
/// Function to render the initial scene to the initial render target.
/// </summary>
/// <param name="lastTargetTexture">The last texture used as a target.</param>
private void CopyToFinal(GorgonTexture2DView lastTargetTexture)
{
if (Graphics.RenderTargets[0] != _final)
{
Graphics.SetRenderTarget(_final);
}
if (_finalClear != null)
{
_final.Clear(_finalClear.Value);
}
// Copy the composited output into the final render target specified by the user.
Renderer.Begin(_finalBatchState, _camera);
Renderer.DrawFilledRectangle(new DX.RectangleF(0, 0, lastTargetTexture.Width, lastTargetTexture.Height),
GorgonColor.White,
lastTargetTexture,
new DX.RectangleF(0, 0, 1, 1));
Renderer.End();
}
/// <summary>
/// Function to render the scene for the compositor effects.
/// </summary>
/// <param name="output">The final output render target for the compositor.</param>
/// <param name="renderMethod">The method used to render the initial scene.</param>
/// <returns>The fluent interface for the effects processor.</returns>
public Gorgon2DCompositor Render(GorgonRenderTargetView output,
Action renderMethod)
{
output.ValidateObject(nameof(output));
renderMethod.ValidateObject(nameof(renderMethod));
// Create or update our resources
if ((_final != output) || (NeedsResourceUpdate(output)))
{
FreeResources();
CreateResources(output);
}
// Create the batch state that we'll use for our initial scene.
if (_hasBatchStateChanged)
{
_batchState = _batchStateBuilder.Build();
_hasBatchStateChanged = false;
}
if (_hasFinalBatchStateChanged)
{
_finalBatchState = _finalBatchStateBuilder.Build();
_hasFinalBatchStateChanged = false;
}
RenderInitalScene(renderMethod);
// If we have no effects, then, just output the scene to the render target as-is.
if (_effects.Count == 0)
{
CopyToFinal(_originalTexture);
return(this);
}
(GorgonRenderTargetView target, GorgonTexture2DView texture)current = (_pingTarget, _originalTexture);
// Iterate through our items.
for (int i = 0; i < _effectList.Count; ++i)
{
Gorgon2DCompositionPass pass = _effectList[i];
if (!pass.Enabled)
{
continue;
}
GorgonRenderTargetView currentTarget = current.target;
GorgonTexture2DView currentTexture = current.texture;
GorgonTexture2DView nextTexture = ((currentTexture == _originalTexture) || (currentTexture == _pongTexture)) ? _pingTexture : _pongTexture;
GorgonRenderTarget2DView nextTarget = current.target == _pingTarget ? _pongTarget : _pingTarget;
if (pass.ClearColor != null)
{
currentTarget.Clear(pass.ClearColor.Value);
}
if (pass.Effect != null)
{
RenderEffectPass(pass, currentTarget, currentTexture);
}
else
{
RenderNoEffectPass(pass, currentTarget, currentTexture);
}
current = (nextTarget, nextTexture);
}
CopyToFinal(current.texture);
return(this);
}