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tweak sampling for SSAO, shadow filters.

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Xonk
2023-10-11 16:28:28 -04:00
parent 2f92a6eff0
commit 87d25d0637
5 changed files with 63 additions and 15 deletions
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31
shaders/dimensions/all_translucent.fsh
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@ -138,17 +138,29 @@ vec3 applyBump(mat3 tbnMatrix, vec3 bump, float puddle_values){
return normalize(bump*tbnMatrix);
}
vec2 tapLocation(int sampleNumber,int nb, float nbRot,float jitter,float distort)
{
float alpha = (sampleNumber+jitter)/nb;
float angle = jitter*6.28 + alpha * nbRot * 6.28;
// vec2 tapLocation(int sampleNumber,int nb, float nbRot,float jitter,float distort)
// {
// float alpha = (sampleNumber+jitter)/nb;
// float angle = jitter*6.28 + alpha * nbRot * 6.28;
float sin_v, cos_v;
// float sin_v, cos_v;
sin_v = sin(angle);
cos_v = cos(angle);
// sin_v = sin(angle);
// cos_v = cos(angle);
return vec2(cos_v, sin_v)*sqrt(alpha);
// return vec2(cos_v, sin_v)*sqrt(alpha);
// }
vec2 tapLocation_simple(
int samples, int totalSamples, float rotation, float rng
){
const float PI = 3.141592653589793238462643383279502884197169;
float alpha = float(samples + rng) * (1.0 / float(totalSamples));
float angle = alpha * (rotation * PI);
float sin_v = sin(angle);
float cos_v = cos(angle);
return vec2(cos_v, sin_v) * sqrt(alpha);
}
@ -398,7 +410,8 @@ if (gl_FragCoord.x * texelSize.x < 1.0 && gl_FragCoord.y * texelSize.y < 1.0 )
int SampleCount = 7;
for(int i = 0; i < SampleCount; i++){
vec2 offsetS = tapLocation(i,SampleCount,1.618,noise,0.0);
// vec2 offsetS = tapLocation(i,SampleCount,1.618,noise,0.0);
vec2 offsetS = tapLocation_simple(i, 7, 9, noise) * 0.5;
float weight = 1.0+(i+noise)*rdMul/9.0*shadowMapResolution;
float isShadow = shadow2D(shadow, projectedShadowPosition + vec3(rdMul*offsetS, -diffthresh*weight)).x / SampleCount;