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Update stars.glsl

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cola98765 2024-03-29 20:49:44 +01:00 committed by GitHub
parent 0dd34d53d6
commit 955353a090
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1 changed files with 5 additions and 1 deletions
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shaders/lib/stars.glsl
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@ -41,7 +41,11 @@ float StableStarField( in vec2 vSamplePos, float fThreshhold )
float stars(vec3 viewPos){
vec2 uv = abs(viewPos.x) > abs(viewPos.y) && abs(viewPos.x) > abs(viewPos.z) ? viewPos.yz : abs(viewPos.y) > abs(viewPos.z) ? viewPos.xz : viewPos.xy;
//6 "faces" in 3 axis
vec2 uv = abs(viewPos.x) > abs(viewPos.y) && abs(viewPos.x) > abs(viewPos.z) ? viewPos.yz : abs(viewPos.y) > abs(viewPos.z) ? viewPos.xz + vec2(1,0) : viewPos.xy + vec2(0,1);
//together with offsets make sure that every face is unique
uv = viewPos.x > 0 ? uv : uv + vec2(1,1);
//scale it down to stars are not too small and too dense
uv *= 0.5;
return exp((1.0-StableStarField(uv*1000.,0.999)) * -10) * 3;