Files
Eclipse-Shader/shaders/lib/Shadows.glsl
T
2025-07-08 01:55:32 +02:00

26 lines
1.0 KiB
GLSL

// Emin's and Gri's combined ideas to stop peter panning and light leaking, also has little shadowacne so thats nice
// https://www.complementary.dev/reimagined
// https://github.com/gri573
void GriAndEminShadowFix(
inout vec3 WorldPos,
vec3 FlatNormal,
float VanillaAO,
float SkyLightmap,
float transition
){
float zoomLevel = 1.0-(transition*transition*transition*transition*0.5+0.5);
if(SkyLightmap < 0.1 && isEyeInWater != 1) WorldPos = WorldPos - ( fract(WorldPos+cameraPosition - WorldPos*0.0001)*zoomLevel - zoomLevel*0.5);
}
void applyShadowBias(inout vec3 projectedShadowPosition, in vec3 playerPos, in vec3 geoNormals){
// Calculate the bias size according to the 1:1 ratio of one shadow texel to one full block
const float biasSize = (shadowDistance / shadowMapResolution*2.0) * 2.0;
float biasDistanceFactor = length(projectedShadowPosition.xy);
biasDistanceFactor = 1.0 + biasDistanceFactor * ((16.0*8.0) / shadowDistance) * 0.1;
projectedShadowPosition += (mat3(shadowModelView) * geoNormals) * biasSize * 0.15 * biasDistanceFactor;
}