public override void process(RenderTarget2D source, RenderTarget2D destination)
{
if (_blurEnabled)
{
// aquire a temporary rendertarget for the processing. It can be scaled via renderTargetScale in order to minimize fillrate costs. Reducing
// the resolution in this way doesn't hurt quality, because we are going to be blurring the images in any case.
var sceneRenderTargetSize = scene.sceneRenderTargetSize;
var tempRenderTarget = RenderTarget.getTemporary(
(int)(sceneRenderTargetSize.X * _blurRenderTargetScale),
(int)(sceneRenderTargetSize.Y * _blurRenderTargetScale),
DepthFormat.None);
// Pass 1: draw from _lightsRenderTexture into tempRenderTarget, applying a horizontal gaussian blur filter
_blurEffect.prepareForHorizontalBlur();
drawFullscreenQuad(_lightsRenderTexture, tempRenderTarget, _blurEffect);
// Pass 2: draw from tempRenderTarget back into _lightsRenderTexture, applying a vertical gaussian blur filter
_blurEffect.prepareForVerticalBlur();
drawFullscreenQuad(tempRenderTarget, _lightsRenderTexture, _blurEffect);
RenderTarget.releaseTemporary(tempRenderTarget);
}
Core.graphicsDevice.setRenderTarget(destination);
Graphics.instance.batcher.begin(effect);
Graphics.instance.batcher.draw(
source,
new Rectangle(0, 0, destination.Width, destination.Height),
Color.White);
Graphics.instance.batcher.end();
}
public override void process(RenderTarget2D source, RenderTarget2D destination)
{
// aquire two rendertargets for the bloom processing. These can be scaled via renderTargetScale in order to minimize fillrate costs. Reducing
// the resolution in this way doesn't hurt quality, because we are going to be blurring the bloom images in any case.
var sceneRenderTargetSize = scene.sceneRenderTargetSize;
var renderTarget1 = RenderTarget.getTemporary(
(int)(sceneRenderTargetSize.X * renderTargetScale),
(int)(sceneRenderTargetSize.Y * renderTargetScale),
DepthFormat.None);
var renderTarget2 = RenderTarget.getTemporary(
(int)(sceneRenderTargetSize.X * renderTargetScale),
(int)(sceneRenderTargetSize.Y * renderTargetScale),
DepthFormat.None);
// Pass 1: draw the scene into rendertarget 1, using a shader that extracts only the brightest parts of the image.
drawFullscreenQuad(source, renderTarget1, _bloomExtractEffect);
// Pass 2: draw from rendertarget 1 into rendertarget 2, using a shader to apply a horizontal gaussian blur filter.
_gaussianBlurEffect.prepareForHorizontalBlur();
drawFullscreenQuad(renderTarget1, renderTarget2, _gaussianBlurEffect);
// Pass 3: draw from rendertarget 2 back into rendertarget 1, using a shader to apply a vertical gaussian blur filter.
_gaussianBlurEffect.prepareForVerticalBlur();
drawFullscreenQuad(renderTarget2, renderTarget1, _gaussianBlurEffect);
// Pass 4: draw both rendertarget 1 and the original scene image back into the main backbuffer, using a shader that
// combines them to produce the final bloomed result.
Core.graphicsDevice.SamplerStates[1] = SamplerState.LinearClamp;
_bloomBaseMapParm.SetValue(source);
drawFullscreenQuad(renderTarget1, destination, _bloomCombineEffect);
RenderTarget.releaseTemporary(renderTarget1);
RenderTarget.releaseTemporary(renderTarget2);
}
