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add RTAO and SSGI in the nether and end

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Xonk
2023-07-31 23:31:56 -04:00
parent 21e20c2d7a
commit ec7a73fefa
6 changed files with 375 additions and 90 deletions
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196
shaders/world-1/composite2.fsh
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@ -101,21 +101,25 @@ float triangularize(float dither)
dither = center*inversesqrt(abs(center));
return clamp(dither-fsign(center),0.0,1.0);
}
// float interleaved_gradientNoise(float temp){
// return fract(52.9829189*fract(0.06711056*gl_FragCoord.x + 0.00583715*gl_FragCoord.y)+temp);
// }
// float interleaved_gradientNoise(){
// vec2 coord = gl_FragCoord.xy;
// float noise = fract(52.9829189*fract(0.06711056*coord.x + 0.00583715*coord.y));
// return noise;
// }
float interleaved_gradientNoise(){
vec2 coord = gl_FragCoord.xy + (frameCounter%40000);
// vec2 coord = gl_FragCoord.xy + frameTimeCounter;
// vec2 coord = gl_FragCoord.xy + (frameCounter%40000);
vec2 coord = gl_FragCoord.xy + frameTimeCounter;
// vec2 coord = gl_FragCoord.xy;
float noise = fract( 52.9829189 * fract( (coord.x * 0.06711056) + (coord.y * 0.00583715)) );
return noise ;
}
vec2 R2_dither(){
vec2 alpha = vec2(0.75487765, 0.56984026);
return vec2(fract(alpha.x * gl_FragCoord.x + alpha.y * gl_FragCoord.y + 1.0/1.6180339887 * frameCounter), fract((1.0-alpha.x) * gl_FragCoord.x + (1.0-alpha.y) * gl_FragCoord.y + 1.0/1.6180339887 * frameCounter));
}
float blueNoise(){
return fract(texelFetch2D(noisetex, ivec2(gl_FragCoord.xy)%512, 0).a + 1.0/1.6180339887 * (frameCounter*0.5+0.5) );
}
vec4 blueNoise(vec2 coord){
return texelFetch2D(colortex6, ivec2(coord)%512 , 0) ;
}
vec3 fp10Dither(vec3 color,float dither){
const vec3 mantissaBits = vec3(6.,6.,5.);
vec3 exponent = floor(log2(color));
@ -141,22 +145,6 @@ vec2 decodeVec2(float a){
const float constant2 = 256. / 255.;
return fract( a * constant1 ) * constant2 ;
}
// float linZ(float depth) {
// return (2.0 * near) / (far + near - depth * (far - near));
// // l = (2*n)/(f+n-d(f-n))
// // f+n-d(f-n) = 2n/l
// // -d(f-n) = ((2n/l)-f-n)
// // d = -((2n/l)-f-n)/(f-n)
// }
// float invLinZ (float lindepth){
// return -((2.0*near/lindepth)-far-near)/(far-near);
// }
// vec3 toClipSpace3(vec3 viewSpacePosition) {
// return projMAD(gbufferProjection, viewSpacePosition) / -viewSpacePosition.z * 0.5 + 0.5;
// }
@ -181,13 +169,7 @@ vec3 BilateralFiltering(sampler2D tex, sampler2D depth,vec2 coord,float frDepth,
return vec3(sampled.x,sampled.yz/sampled.w);
}
float blueNoise(){
return fract(texelFetch2D(noisetex, ivec2(gl_FragCoord.xy)%512, 0).a + 1.0/1.6180339887 * frameCounter);
}
float R2_dither(){
vec2 alpha = vec2(0.75487765, 0.56984026);
return fract(alpha.x * gl_FragCoord.x + alpha.y * gl_FragCoord.y);
}
vec3 toShadowSpaceProjected(vec3 p3){
p3 = mat3(gbufferModelViewInverse) * p3 + gbufferModelViewInverse[3].xyz;
p3 = mat3(shadowModelView) * p3 + shadowModelView[3].xyz;
@ -307,10 +289,6 @@ void waterVolumetrics(inout vec3 inColor, vec3 rayStart, vec3 rayEnd, float estE
inColor += vL;
}
vec4 blueNoise(vec2 coord){
return texelFetch2D(colortex6, ivec2(coord )%512 , 0);
}
void Emission(
inout vec3 Lighting,
vec3 Albedo,
@ -383,6 +361,81 @@ void ScreenSpace_SSS(inout float sss, vec3 fragpos, vec2 noise, vec3 normal){
vec3 rayTrace_GI(vec3 dir,vec3 position,float dither, float quality){
vec3 clipPosition = toClipSpace3(position);
float rayLength = ((position.z + dir.z * far*sqrt(3.)) > -near) ?
(-near -position.z) / dir.z : far*sqrt(3.);
vec3 direction = normalize(toClipSpace3(position+dir*rayLength)-clipPosition); //convert to clip space
direction.xy = normalize(direction.xy);
//get at which length the ray intersects with the edge of the screen
vec3 maxLengths = (step(0.,direction)-clipPosition) / direction;
float mult = maxLengths.y;
vec3 stepv = direction * mult / quality*vec3(RENDER_SCALE,1.0) * dither;
vec3 spos = clipPosition*vec3(RENDER_SCALE,1.0) ;
spos.xy += TAA_Offset*texelSize*0.5/RENDER_SCALE;
float biasdist = clamp(position.z*position.z/50.0,1,2); // shrink sample size as distance increases
for(int i = 0; i < int(quality); i++){
spos += stepv;
float sp = sqrt(texelFetch2D(colortex4,ivec2(spos.xy/texelSize/4),0).w/65000.0);
float currZ = linZ(spos.z);
if( sp < currZ) {
float dist = abs(sp-currZ)/currZ;
if (abs(dist) < biasdist*0.05) return vec3(spos.xy, invLinZ(sp))/vec3(RENDER_SCALE,1.0);
}
spos += stepv;
}
return vec3(1.1);
}
vec3 RT(vec3 dir, vec3 position, float noise, float stepsizes){
float dist = 1.0 + clamp(position.z*position.z/50.0,0,2); // shrink sample size as distance increases
float stepSize = stepsizes / dist;
int maxSteps = STEPS;
vec3 clipPosition = toClipSpace3(position);
float rayLength = ((position.z + dir.z * sqrt(3.0)*far) > -sqrt(3.0)*near) ?
(-sqrt(3.0)*near -position.z) / dir.z : sqrt(3.0)*far;
vec3 end = toClipSpace3(position+dir*rayLength) ;
vec3 direction = end-clipPosition ; //convert to clip space
float len = max(abs(direction.x)/texelSize.x,abs(direction.y)/texelSize.y)/stepSize;
//get at which length the ray intersects with the edge of the screen
vec3 maxLengths = (step(0.,direction)-clipPosition) / direction;
float mult = min(min(maxLengths.x,maxLengths.y),maxLengths.z)*2000.0;
vec3 stepv = direction/len;
int iterations = min(int(min(len, mult*len)-2), maxSteps);
//Do one iteration for closest texel (good contact shadows)
vec3 spos = clipPosition*vec3(RENDER_SCALE,1.0) ;
spos.xy += TAA_Offset*texelSize*0.5*RENDER_SCALE;
spos += stepv/(stepSize/2);
float distancered = 1.0 + clamp(position.z*position.z/50.0,0,2); // shrink sample size as distance increases
for(int i = 0; i < iterations; i++){
if (spos.x < 0.0 || spos.y < 0.0 || spos.z < 0.0 || spos.x > 1.0 || spos.y > 1.0 || spos.z > 1.0) return vec3(1.1);
spos += stepv*noise;
float sp = sqrt(texelFetch2D(colortex4,ivec2(spos.xy/ texelSize/4),0).w/65000.0);
float currZ = linZ(spos.z);
if( sp < currZ) {
float dist = abs(sp-currZ)/currZ;
if (dist <= 0.1) return vec3(spos.xy, invLinZ(sp))/vec3(RENDER_SCALE,1.0);
}
}
return vec3(1.1);
}
vec3 cosineHemisphereSample(vec2 Xi, float roughness){
float r = sqrt(Xi.x);
float theta = 2.0 * 3.14159265359 * Xi.y;
@ -392,6 +445,7 @@ vec3 cosineHemisphereSample(vec2 Xi, float roughness){
return vec3(x, y, sqrt(clamp(1.0 - Xi.x,0.,1.)));
}
vec3 TangentToWorld(vec3 N, vec3 H, float roughness){
vec3 UpVector = abs(N.z) < 0.999 ? vec3(0.0, 0.0, 1.0) : vec3(1.0, 0.0, 0.0);
vec3 T = normalize(cross(UpVector, N));
@ -399,7 +453,59 @@ vec3 TangentToWorld(vec3 N, vec3 H, float roughness){
return vec3((T * H.x) + (B * H.y) + (N * H.z));
}
vec2 R2_samples(int n){
vec2 alpha = vec2(0.75487765, 0.56984026);
return fract(alpha * n);
}
void ApplySSRT(inout vec3 lighting, vec3 normal,vec2 noise,vec3 fragpos, float lightmaps, vec3 torchcolor){
int nrays = RAY_COUNT;
vec3 radiance = vec3(0.0);
vec3 occlusion = vec3(0.0);
vec3 skycontribution = vec3(0.0);
for (int i = 0; i < nrays; i++){
int seed = (frameCounter%40000)*nrays+i;
vec2 ij = fract(R2_samples(seed) + noise );
vec3 rayDir = TangentToWorld(normal, normalize(cosineHemisphereSample(ij,1.0)) ,1.0);
#ifdef HQ_SSGI
vec3 rayHit = rayTrace_GI( mat3(gbufferModelView) * rayDir, fragpos, blueNoise(), 50.); // ssr rt
#else
vec3 rayHit = RT(mat3(gbufferModelView)*rayDir, fragpos, blueNoise(), 30.); // choc sspt
#endif
skycontribution = lighting;
if (rayHit.z < 1.){
#if indirect_effect == 4
vec3 previousPosition = mat3(gbufferModelViewInverse) * toScreenSpace(rayHit) + gbufferModelViewInverse[3].xyz + cameraPosition-previousCameraPosition;
previousPosition = mat3(gbufferPreviousModelView) * previousPosition + gbufferPreviousModelView[3].xyz;
previousPosition.xy = projMAD(gbufferPreviousProjection, previousPosition).xy / -previousPosition.z * 0.5 + 0.5;
if (previousPosition.x > 0.0 && previousPosition.y > 0.0 && previousPosition.x < 1.0 && previousPosition.x < 1.0){
radiance += (texture2D(colortex5,previousPosition.xy).rgb + skycontribution) * GI_Strength;
}else{
radiance += skycontribution;
}
#else
radiance += skycontribution;
#endif
occlusion += skycontribution * GI_Strength;
} else {
radiance += skycontribution;
}
}
occlusion *= AO_Strength;
lighting = max(radiance/nrays - occlusion/nrays, 0.0);
}
void main() {
float dirtAmount = Dirt_Amount;
vec3 waterEpsilon = vec3(Water_Absorb_R, Water_Absorb_G, Water_Absorb_B);
@ -481,9 +587,21 @@ void main() {
// do all ambient lighting stuff
vec3 Indirect_lighting = DoAmbientLighting_Nether(AmbientLightColor, vec3(TORCH_R,TORCH_G,TORCH_B), lightmap.x, normal, np3, p3 );
vec3 AO = vec3( exp( (vanilla_AO*vanilla_AO) * -5) ) ;
if(!hand) Indirect_lighting *= ssao(fragpos,noise,FlatNormals) * AO;
#if indirect_effect == 0
vec3 AO = vec3( exp( (vanilla_AO*vanilla_AO) * -5) ) ;
if(!hand) Indirect_lighting *= AO;
#endif
#if indirect_effect == 1
vec3 AO = vec3( exp( (vanilla_AO*vanilla_AO) * -5) ) ;
if(!hand) Indirect_lighting *= ssao(fragpos,noise,FlatNormals) * AO;
#endif
// RTAO and/or SSGI
#if indirect_effect == 3 || indirect_effect == 4
if (!hand) ApplySSRT(Indirect_lighting, normal, blueNoise(gl_FragCoord.xy).rg, fragpos, lightmap.x,vec3(TORCH_R,TORCH_G,TORCH_B));
#endif
// finalize
gl_FragData[0].rgb = Indirect_lighting * albedo;