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Merlin1809
28 lines
809 B
GLSL
28 lines
809 B
GLSL
#ifndef VOXY_PROGRAM
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uniform float far;
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uniform int dhVoxyRenderDistance;
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#endif
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const float k = 1.8;
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const float d0 = 0.04 + (1.0-clamp(shadowDistance-64.0, 0.0,1.0)) * 0.1;
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const float d1 = 0.61;
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float a = exp(d0);
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float b = (exp(d1)-a)*150./128.0;
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// thank you Espen
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// #ifdef DISTANT_HORIZONS_SHADOWMAP
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// float b = (exp(d1)-a)*min(dhVoxyRenderDistance, shadowDistance)/shadowDistance;
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// #else
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// float b = (exp(d1)-a)*min(far+16.0*3.5, shadowDistance)/shadowDistance;
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// #endif
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vec4 BiasShadowProjection(in vec4 projectedShadowSpacePosition) {
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float distortFactor = log(length(projectedShadowSpacePosition.xy)*b+a)*k;
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projectedShadowSpacePosition.xy /= distortFactor;
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return projectedShadowSpacePosition;
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}
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float calcDistort(vec2 worldpos){
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return 1.0/(log(length(worldpos)*b+a)*k);
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} |