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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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24
shaders/dimensions/composite.fsh
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@ -153,6 +153,19 @@ void GriAndEminShadowFix(
#include "/lib/Shadow_Params.glsl"
const float PI = 3.141592653589793238462643383279502884197169;
vec2 tapLocation_simple(
int samples, int totalSamples, float rotation, float rng
){
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);
}
void main() {
/* DRAWBUFFERS:3 */
vec2 texcoord = gl_FragCoord.xy*texelSize;
@ -238,13 +251,18 @@ void main() {
float diffthreshM = diffthresh*mult*d0*k/20.;
float avgDepth = 0.0;
int seed = (frameCounter%40000) * 2 + (1+frameCounter);
float samplePos = fract(R2_samples(seed).x + blueNoise(gl_FragCoord.xy).x) * 1.61803398874;
// int seed = (frameCounter%40000) * 2 + (1+frameCounter);
// float samplePos = fract(R2_samples(seed).x + blueNoise(gl_FragCoord.xy).x) * 1.61803398874;
int seed = (frameCounter%40000) + frameCounter*2;
float samplePos = fract(R2_samples(seed).y + blueNoise(gl_FragCoord.xy).y);
float noise = 0.5+blueNoise();
for(int i = 0; i < VPS_Search_Samples; i++){
vec2 offsetS = tapLocation_alternate(i+1, i/VPS_Search_Samples, 7, 20, samplePos) * noise;
// vec2 offsetS = tapLocation_alternate(i+1, i/VPS_Search_Samples, 7, 20, samplePos) * noise;
vec2 offsetS = tapLocation_simple(i, 7, 9, samplePos);
float weight = 3.0 + (i+blueNoise() ) *rdMul/SHADOW_FILTER_SAMPLE_COUNT*shadowMapResolution*distortFactor/2.7;