public void End(bool doBloom = false)
{
downscaler.Downscale();
var averageLuminance = AverageLuminance();
postEffect.Parameters["GammaReciprocal"].SetValue(1 / Gamma);
postEffect.Parameters["ColorTexture"].SetValue(targets.ColorAccum);
postEffect.Parameters["AverageLuminanceTexture"].SetValue(averageLuminance);
postEffect.Parameters["MiddleGrey"].SetValue(0.25f);
postEffect.Parameters["LumWhiteSqr"].SetValue(3f);
if (doBloom)
{
var bloomImage = this.bloom.Blur(targets.ColorAccum, BloomSettings, averageLuminance, 0.1f);
postEffect.CurrentTechnique = postEffect.Techniques["FinalBloom"];
postEffect.Parameters["BloomIntensity"].SetValue(BloomSettings.BloomIntensity);
postEffect.Parameters["BaseIntensity"].SetValue(BloomSettings.BaseIntensity);
postEffect.Parameters["BaseSaturation"].SetValue(BloomSettings.BaseSaturation);
postEffect.Parameters["BloomSaturation"].SetValue(BloomSettings.BloomSaturation);
postEffect.Parameters["BloomTexture"].SetValue(bloomImage);
}
else
{
postEffect.CurrentTechnique = postEffect.Techniques["Final"];
}
graphics.SetRenderTargets();
graphics.Clear(Color.Black);
fullScreen.Draw(postEffect);
}
/// <summary>
/// Helper for drawing a texture into a rendertarget, using
/// a custom shader to apply postprocessing effects.
/// </summary>
void DrawFullscreenQuad(RenderTarget2D renderTarget, Texture2D texture,
Effect effect)
{
graphics.SetRenderTarget(renderTarget);
effect.Parameters["ColorTexture"].SetValue(texture);
fullScreen.Draw(effect);
}
public void WeightedAverage(float a_weight, float b_weight)
{
graphics.BlendState = BlendState.Opaque;
graphics.SetRenderTarget(Accumulator);
effect.CurrentTechnique = effect.Techniques["Average"];
p_a_weight.SetValue(new Vector4(a_weight, a_weight, a_weight, a_weight));
p_b_weight.SetValue(new Vector4(b_weight, b_weight, b_weight, b_weight));
p_a_texture.SetValue(A);
p_b_texture.SetValue(B);
effect.Parameters["HalfTexel"].SetValue(new Vector2(0.25f, 0.25f));
fullScreen.Draw(effect);
}
public void Downscale()
{
Texture2D last = targets.ColorAccum;
graphics.BlendState = BlendState.Opaque;
for (int i = 0; i < renderTargets.Length; i++)
{
Vector2 texelOffset = 0.5f *
new Vector2(1 / last.Width - 1 / renderTargets[i].Width,
1 / last.Height - 1 / renderTargets[i].Height);
graphics.SetRenderTarget(renderTargets[i]);
downscale.CurrentTechnique = downscale.Techniques["Downscale"];
downscale.Parameters["ColorTexture"].SetValue(last);
downscale.Parameters["TexelOffset"].SetValue(texelOffset);
fullScreen.Draw(downscale);
last = renderTargets[i];
}
}