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https://github.com/Merlin1809/Eclipse-Shader.git
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Merlin1809
35 lines
1.4 KiB
GLSL
35 lines
1.4 KiB
GLSL
// Emin's and Gri's combined ideas to stop peter panning and light leaking, also has little shadowacne so thats nice
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// https://www.complementary.dev/reimagined
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// https://github.com/gri573
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void GriAndEminShadowFix(
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inout vec3 WorldPos,
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vec3 FlatNormal,
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float transition
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){
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transition = 1.0-transition;
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transition *= transition*transition*transition*transition*transition*transition;
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float zoomLevel = mix(0.0, 0.5, transition);
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if(zoomLevel > 0.001 && isEyeInWater != 1) WorldPos = WorldPos - ( fract(WorldPos+cameraPosition - WorldPos*0.0001)*zoomLevel - zoomLevel*0.5);
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}
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void applyShadowBias(inout vec3 projectedShadowPosition, in vec3 playerPos, in vec3 geoNormals, float POM_DEEPNESS){
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// Calculate the bias size according to the 1:1 ratio of one shadow texel to one full block
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#if defined POM_OFFSET_SHADOW_BIAS
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float biasSize = (shadowDistance / shadowMapResolution*2.0) * (2.0 + POM_DEEPNESS*(1.0+POM_DEPTH*3.0));
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#else
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float biasSize = (shadowDistance / shadowMapResolution*2.0) * 2.0;
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#endif
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float biasDistanceFactor = length(projectedShadowPosition.xy);
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biasDistanceFactor = 1.0 + biasDistanceFactor * ((16.0*8.0) / shadowDistance) * 0.1;
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#ifdef CUSTOM_MOON_ROTATION
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projectedShadowPosition += (mat3(customShadowMatrixSSBO) * geoNormals) * biasSize * 0.15 * biasDistanceFactor;
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#else
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projectedShadowPosition += (mat3(shadowModelView) * geoNormals) * biasSize * 0.15 * biasDistanceFactor;
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#endif
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}
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