From b0eb31c1a2347229754ce0e7ce2b588cc099546a Mon Sep 17 00:00:00 2001
From: Alexander Gauggel <agauggel@uni-koblenz.de>
Date: Sat, 26 Jun 2021 15:12:15 +0200
Subject: [PATCH] [#82] Make lens dirt energy conserving
---
.../resources/shaders/bloomFlaresComposite.comp | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/projects/voxelization/resources/shaders/bloomFlaresComposite.comp b/projects/voxelization/resources/shaders/bloomFlaresComposite.comp
index fdc8884d..57174b73 100644
--- a/projects/voxelization/resources/shaders/bloomFlaresComposite.comp
+++ b/projects/voxelization/resources/shaders/bloomFlaresComposite.comp
@@ -41,7 +41,14 @@ float getLensDirtWeight(vec2 uv){
uv.x *= targetAspectRatio / dirtAspectRatio;
float dirt = texture(sampler2D(dirtTexture, radialLUTSampler), uv).r;
- float dirtStrength = 0.75;
+ float dirtStrength = 0.4f;
+
+ // manually looked up in gimp, must be adjusted when changing dirt texture
+ float dirtMean = 0.132;
+ // make sure no energy is lost
+ // otherwise bloom is darkened when the dirt increases
+ dirt /= dirtMean;
+
return mix(1, dirt, dirtStrength);
}
@@ -62,8 +69,8 @@ void main()
vec3 main_color = imageLoad(colorBuffer, pixel_coord).rgb;
// composite blur and lens features
- float bloom_weight = 0.15f;
- float lens_weight = 0.15f;
+ float bloom_weight = 0.06f;
+ float lens_weight = 0.02f;
float main_weight = 1 - (bloom_weight + lens_weight);
lens_color *= starburst(UV);
--
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