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Bliss-Shader/shaders/composite2.fsh
Xonk a9be7b0da5 Revert "More jitter DOF stuff" 
This reverts commit 92943470f4.
2023-01-15 23:50:43 -05:00

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GLSL
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#version 120
//Render sky, volumetric clouds, direct lighting
#extension GL_EXT_gpu_shader4 : enable
#include "lib/settings.glsl"
const bool colortex5MipmapEnabled = true;
// const bool colortex4MipmapEnabled = true;
\
const bool shadowHardwareFiltering = true;
flat varying vec4 lightCol; //main light source color (rgb),used light source(1=sun,-1=moon)
flat varying vec3 ambientUp;
flat varying vec3 ambientLeft;
flat varying vec3 ambientRight;
flat varying vec3 ambientB;
flat varying vec3 ambientF;
flat varying vec3 ambientDown;
flat varying vec3 avgAmbient;
flat varying vec3 WsunVec;
flat varying vec2 TAA_Offset;
flat varying float tempOffsets;
/*
const int colortex12Format = RGBA16F; //Final output, transparencies id (gbuffer->composite4)
const int colortex11Format = RGBA16F; //Final output, transparencies id (gbuffer->composite4)
const int colortex15Format = RGBA16F; //Final output, transparencies id (gbuffer->composite4)
*/
uniform sampler2D colortex0;//clouds
uniform sampler2D colortex1;//albedo(rgb),material(alpha) RGBA16
// uniform sampler2D colortex4;//Skybox
uniform sampler2D colortex3;
uniform sampler2D colortex5;
uniform sampler2D colortex7; // normal
uniform sampler2D colortex6; // Noise
uniform sampler2D colortex8; // specular
// uniform sampler2D colortex9; // specular
uniform sampler2D colortex10; // specular
uniform sampler2D colortex11; // specular
uniform sampler2D colortex12; // specular
uniform sampler2D colortex13; // specular
uniform sampler2D colortex14; // specular
uniform sampler2D colortex15; // specular
uniform sampler2D colortex16; // specular
uniform sampler2D depthtex1;//depth
uniform sampler2D depthtex0;//depth
uniform sampler2D noisetex;//depth
uniform sampler2DShadow shadow;
varying vec4 normalMat;
uniform int heldBlockLightValue;
uniform int frameCounter;
uniform int isEyeInWater;
uniform float far;
uniform float nightVision;
uniform float near;
uniform float frameTimeCounter;
uniform float rainStrength;
uniform mat4 gbufferProjection;
uniform mat4 gbufferProjectionInverse;
uniform mat4 gbufferModelViewInverse;
uniform mat4 gbufferPreviousModelView;
uniform mat4 gbufferPreviousProjection;
uniform vec3 previousCameraPosition;
uniform mat4 shadowModelView;
uniform mat4 shadowProjection;
uniform mat4 gbufferModelView;
// uniform float viewWidth;
// uniform float viewHeight;
uniform float aspectRatio;
uniform vec2 texelSize;
uniform vec3 cameraPosition;
uniform vec3 sunVec;
uniform ivec2 eyeBrightnessSmooth;
uniform ivec2 eyeBrightness;
// uniform int worldTime;
#define diagonal3(m) vec3((m)[0].x, (m)[1].y, m[2].z)
#define projMAD(m, v) (diagonal3(m) * (v) + (m)[3].xyz)
vec3 toScreenSpace(vec3 p) {
vec4 iProjDiag = vec4(gbufferProjectionInverse[0].x, gbufferProjectionInverse[1].y, gbufferProjectionInverse[2].zw);
vec3 p3 = p * 2. - 1.;
vec4 fragposition = iProjDiag * p3.xyzz + gbufferProjectionInverse[3];
return fragposition.xyz / fragposition.w;
}
vec3 toScreenSpacePrev(vec3 p) {
vec4 iProjDiag = vec4(gbufferProjectionInverse[0].x, gbufferProjectionInverse[1].y, gbufferProjectionInverse[2].zw);
vec3 p3 = p * 2. - 1.;
vec4 fragposition = iProjDiag * p3.xyzz + gbufferProjectionInverse[3];
return fragposition.xyz / fragposition.w;
}
vec3 worldToView(vec3 p3) {
vec4 pos = vec4(p3, 0.0);
pos = gbufferModelView * pos;
return pos.xyz;
}
float ld(float dist) {
return (2.0 * near) / (far + near - dist * (far - near));
}
vec3 ld(vec3 dist) {
return (2.0 * near) / (far + near - dist * (far - near));
}
vec3 srgbToLinear2(vec3 srgb){
return mix(
srgb / 12.92,
pow(.947867 * srgb + .0521327, vec3(2.4) ),
step( .04045, srgb )
);
}
vec3 blackbody2(float Temp)
{
float t = pow(Temp, -1.5);
float lt = log(Temp);
vec3 col = vec3(0.0);
col.x = 220000.0 * t + 0.58039215686;
col.y = 0.39231372549 * lt - 2.44549019608;
col.y = Temp > 6500. ? 138039.215686 * t + 0.72156862745 : col.y;
col.z = 0.76078431372 * lt - 5.68078431373;
col = clamp(col,0.0,1.0);
col = Temp < 1000. ? col * Temp * 0.001 : col;
return srgbToLinear2(col);
}
vec3 normVec (vec3 vec){
return vec*inversesqrt(dot(vec,vec));
}
vec3 viewToWorld(vec3 viewPosition) {
vec4 pos;
pos.xyz = viewPosition;
pos.w = 0.0;
pos = gbufferModelViewInverse * pos;
return pos.xyz;
}
// #include "lib/settings.glsl"
// #include "lib/biome_specifics.glsl"
#include "lib/res_params.glsl"
#include "lib/Shadow_Params.glsl"
#include "lib/color_transforms.glsl"
#include "lib/sky_gradient.glsl"
#include "lib/stars.glsl"
#include "lib/volumetricClouds.glsl"
#include "lib/waterBump.glsl"
#include "lib/specular.glsl"
// #include "/lib/climate_settings.glsl"
float lengthVec (vec3 vec){
return sqrt(dot(vec,vec));
}
#define fsign(a) (clamp((a)*1e35,0.,1.)*2.-1.)
float triangularize(float dither)
{
float center = dither*2.0-1.0;
dither = center*inversesqrt(abs(center));
return clamp(dither-fsign(center),0.0,1.0);
}
float interleaved_gradientNoise(){
// 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 ;
}
float blueNoise(){
return fract(texelFetch2D(noisetex, ivec2(gl_FragCoord.xy)%512, 0).a + 1.0/1.6180339887 * frameCounter);
}
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));
return color + dither*exp2(-mantissaBits)*exp2(exponent);
}
vec3 decode (vec2 encn){
vec3 n = vec3(0.0);
encn = encn * 2.0 - 1.0;
n.xy = abs(encn);
n.z = 1.0 - n.x - n.y;
n.xy = n.z <= 0.0 ? (1.0 - n.yx) * sign(encn) : encn;
return clamp(normalize(n.xyz),-1.0,1.0);
}
vec2 decodeVec2(float a){
const vec2 constant1 = 65535. / vec2( 256., 65536.);
const float constant2 = 256. / 255.;
return fract( a * constant1 ) * constant2 ;
}
vec2 tapLocation(int sampleNumber,int nb, float nbRot,float jitter,float distort){
float alpha0 = sampleNumber/nb;
float alpha = (sampleNumber+jitter)/nb;
float angle = jitter*6.28 + alpha * 84.0 * 6.28;
float sin_v, cos_v;
sin_v = sin(angle);
cos_v = cos(angle);
return vec2(cos_v, sin_v)*sqrt(alpha);
}
vec3 toShadowSpaceProjected(vec3 p3){
p3 = mat3(gbufferModelViewInverse) * p3 + gbufferModelViewInverse[3].xyz;
p3 = mat3(shadowModelView) * p3 + shadowModelView[3].xyz;
p3 = diagonal3(shadowProjection) * p3 + shadowProjection[3].xyz;
return p3;
}
vec2 R2_samples(int n){
vec2 alpha = vec2(0.75487765, 0.56984026);
return fract(alpha * n);
}
vec2 tapLocation(int sampleNumber, float spinAngle,int nb, float nbRot,float r0){
float alpha = (float(sampleNumber*1.0f + r0) * (1.0 / (nb)));
float angle = alpha * (nbRot * 3.14) + spinAngle*3.14;
float ssR = alpha;
float sin_v, cos_v;
sin_v = sin(angle);
cos_v = cos(angle);
return vec2(cos_v, sin_v)*ssR;
}
void waterVolumetrics(inout vec3 inColor, vec3 rayStart, vec3 rayEnd, float estEndDepth, float estSunDepth, float rayLength, float dither, vec3 waterCoefs, vec3 scatterCoef, vec3 ambient, vec3 lightSource, float VdotL){
inColor *= exp(-rayLength * waterCoefs); //No need to take the integrated value
int spCount = rayMarchSampleCount;
vec3 start = toShadowSpaceProjected(rayStart);
vec3 end = toShadowSpaceProjected(rayEnd);
vec3 dV = (end-start);
//limit ray length at 32 blocks for performance and reducing integration error
//you can't see above this anyway
float maxZ = min(rayLength,32.0)/(1e-8+rayLength);
dV *= maxZ;
vec3 dVWorld = -mat3(gbufferModelViewInverse) * (rayEnd - rayStart) * maxZ;
rayLength *= maxZ;
float dY = normalize(mat3(gbufferModelViewInverse) * rayEnd).y * rayLength;
estEndDepth *= maxZ;
estSunDepth *= maxZ;
vec3 absorbance = vec3(1.0);
vec3 vL = vec3(0.0);
float phase = 2*mix(phaseg(VdotL, 0.4),phaseg(VdotL, 0.8),0.5);
float expFactor = 11.0;
vec3 progressW = gbufferModelViewInverse[3].xyz+cameraPosition;
for (int i=0;i<spCount;i++) {
float d = (pow(expFactor, float(i+dither)/float(spCount))/expFactor - 1.0/expFactor)/(1-1.0/expFactor);
float dd = pow(expFactor, float(i+dither)/float(spCount)) * log(expFactor) / float(spCount)/(expFactor-1.0);
vec3 spPos = start.xyz + dV*d;
progressW = gbufferModelViewInverse[3].xyz+cameraPosition + d*dVWorld;
//project into biased shadowmap space
float distortFactor = calcDistort(spPos.xy);
vec3 pos = vec3(spPos.xy*distortFactor, spPos.z);
float sh = 1.0;
if (abs(pos.x) < 1.0-0.5/2048. && abs(pos.y) < 1.0-0.5/2048){
pos = pos*vec3(0.5,0.5,0.5/6.0)+0.5;
sh = shadow2D( shadow, pos).x;
}
#ifdef VOLUMETRIC_CLOUDS
#ifdef CLOUDS_SHADOWS
vec3 campos = (progressW)-319;
// get cloud position
vec3 cloudPos = campos*Cloud_Size + WsunVec/abs(WsunVec.y) * (2250 - campos.y*Cloud_Size);
// get the cloud density and apply it
float cloudShadow = getCloudDensity(cloudPos, 1);
// cloudShadow = exp(-cloudShadow*sqrt(cloudDensity)*50);
cloudShadow = clamp(exp(-cloudShadow*6),0.0,1.0);
sh *= cloudShadow;
#endif
#endif
vec3 ambientMul = exp(-max(estEndDepth * d,0.0) * waterCoefs );
vec3 sunMul = exp(-max(estSunDepth * d,0.0) * waterCoefs);
// vec3 light = (sh * lightSource*8./150./3.0 * phase * sunMul + ambientMul * ambient)*scatterCoef;
// vec3 ambientMul = exp(-max(estEyeDepth - dVWorld * d,0.0) * waterCoefs);
// vec3 sunMul = exp(-max((estEyeDepth - dVWorld * d) ,0.0)/abs(refractedSunVec.y) * waterCoefs)*cloudShadow;
vec3 light = (sh * lightSource * phase * sunMul + (ambientMul*ambient) )*scatterCoef;
vL += (light - light * exp(-waterCoefs * dd * rayLength)) / waterCoefs *absorbance;
absorbance *= exp(-dd * rayLength * waterCoefs);
}
inColor += vL;
}
float waterCaustics(vec3 wPos, vec3 lightSource) { // water waves
vec2 pos = wPos.xz + (lightSource.xz/lightSource.y*wPos.y);
if(isEyeInWater==1) pos = wPos.xz - (lightSource.xz/lightSource.y*wPos.y); // fix the fucky
vec2 movement = vec2(-0.035*frameTimeCounter);
float caustic = 0.0;
float weightSum = 0.0;
float radiance = 2.39996;
mat2 rotationMatrix = mat2(vec2(cos(radiance), -sin(radiance)), vec2(sin(radiance), cos(radiance)));
const vec2 wave_size[4] = vec2[](
vec2(64.),
vec2(32.,16.),
vec2(16.,32.),
vec2(48.)
);
for (int i = 0; i < 4; i++){
pos = rotationMatrix * pos;
vec2 speed = movement;
float waveStrength = 1.0;
if( i == 0) {
speed *= 0.15;
waveStrength = 2.0;
}
float small_wave = texture2D(noisetex, pos / wave_size[i] + speed ).b * waveStrength;
caustic += max( 1.0-sin( 1.0-pow( 0.5+sin( small_wave*3.0 )*0.5, 25.0) ), 0);
weightSum -= exp2(caustic*0.1);
}
return caustic / weightSum;
}
float rayTraceShadow(vec3 dir,vec3 position,float dither){
const float quality = 16.;
vec3 clipPosition = toClipSpace3(position);
//prevents the ray from going behind the camera
float rayLength = ((position.z + dir.z * far*sqrt(3.)) > -near) ?
(-near -position.z) / dir.z : far*sqrt(3.) ;
vec3 direction = toClipSpace3(position+dir*rayLength)-clipPosition; //convert to clip space
direction.xyz = direction.xyz/max(abs(direction.x)/texelSize.x,abs(direction.y)/texelSize.y); //fixed step size
vec3 stepv = direction *3. * clamp(MC_RENDER_QUALITY,1.,2.0)*vec3(RENDER_SCALE,1.0);
vec3 spos = clipPosition*vec3(RENDER_SCALE,1.0);
spos.xy += (TAA_Offset*(texelSize/4))*RENDER_SCALE ;
spos += stepv;
for (int i = 0; i < int(quality); i++) {
spos += stepv*(dither*0.2 +0.8) *0.5;
// spos += stepv;
float sp = texture2D(depthtex1,spos.xy).x;
if( sp < spos.z) {
float dist = abs(linZ(sp)-linZ(spos.z))/linZ(spos.z);
if (dist < 0.015 ) return 0.0;
}
}
return 1.0;
}
vec2 tapLocation_alternate(
int sampleNumber,
float spinAngle,
int nb,
float nbRot,
float r0
){
float alpha = (float(sampleNumber*1.0f + r0) * (1.0 / (nb)));
float angle = alpha * (nbRot * 3.14) ;
float ssR = alpha + spinAngle*3.14;
float sin_v, cos_v;
sin_v = sin(angle);
cos_v = cos(angle);
return vec2(cos_v, sin_v)*ssR;
}
vec2 hash21(float p)
{
vec3 p3 = fract(vec3(p) * vec3(.1031, .1030, .0973));
p3 += dot(p3, p3.yzx + 33.33);
return fract((p3.xx+p3.yz)*p3.zy);
}
vec2 vogel_disk_7[7] = vec2[](
vec2(0.2506005557551467 , -0.08481388042204699) ,
vec2(-0.3579961502930998 , 0.22787736539225004) ,
vec2(0.035586177529474045, -0.6801399443380787) ,
vec2(0.4135705583782951 , 0.4763465923710499) ,
vec2(-0.8061879331972175 , -0.2244701335533563) ,
vec2(0.7312484456783402 , -0.560572449689252) ,
vec2(-0.26682165385093876, 0.8457724502394341)
);
void ssAO(inout vec3 lighting, vec3 fragpos,float mulfov, vec2 noise, vec3 normal, vec2 texcoord, vec3 ambientCoefs, vec2 lightmap, float sunlight){
ivec2 pos = ivec2(gl_FragCoord.xy);
const float tan70 = tan(70.*3.14/180.);
float dist = 1.0 + clamp(fragpos.z*fragpos.z/50.0,0,2); // shrink sample size as distance increases
float mulfov2 = gbufferProjection[1][1]/(tan70 * dist);
float maxR2 = fragpos.z*fragpos.z*mulfov2*2.*5/50.0;
float rd = mulfov2 * 0.1 ;
//pre-rotate direction
float n = 0.0;
float occlusion = 0.0;
vec2 acc = -(TAA_Offset*(texelSize/2))*RENDER_SCALE ;
int seed = (frameCounter%40000)*2 + (1+frameCounter);
float randomDir = fract(R2_samples(seed).y + noise.x ) * 1.61803398874 ;
vec3 NormalSpecific = viewToWorld(normal);
for (int j = 0; j < 7 ;j++) {
vec2 sp = tapLocation_alternate(j, 0.0, 7, 20, randomDir);
// vec2 sp = vogel_disk_7[j];
// float thing = sp.y < 0.0 && clamp(floor(abs(NormalSpecific.y)*2.0),0.0,1.0) < 1.0 ? rd * 10: rd;
// vec2 sampleOffset = sp*thing;
// vec2 sampleOffset2 = sp*rd ;
// sampleOffset = min(sampleOffset, sampleOffset2);
vec2 sampleOffset = sp*rd;
ivec2 offset = ivec2(gl_FragCoord.xy + sampleOffset*vec2(viewWidth,viewHeight*aspectRatio)*RENDER_SCALE);
if (offset.x >= 0 && offset.y >= 0 && offset.x < viewWidth*RENDER_SCALE.x && offset.y < viewHeight*RENDER_SCALE.y ) {
vec3 t0 = toScreenSpace(vec3(offset*texelSize+acc+0.5*texelSize,texelFetch2D(depthtex1,offset,0).x) * vec3(1.0/RENDER_SCALE, 1.0) );
vec3 vec = t0.xyz - fragpos;
float dsquared = dot(vec,vec);
if (dsquared > 1e-5){
if (dsquared < maxR2){
float NdotV = clamp(dot(vec*inversesqrt(dsquared), normalize(normal)),0.,1.);
occlusion += NdotV * clamp(1.0-dsquared/maxR2,0.0,1.0);
// float NdotV2 = clamp(dot(vec*inversesqrt(dsquared), normalize(RPnormal)),0.,1.);
// occlusion.y += NdotV2 * clamp(1.0-dsquared/maxR2,0.0,1.0);
}
n += 1;
}
}
}
// occlusion *= mix(2.5, 2.0 , clamp(floor(abs(NormalSpecific.y)*2.0),0.0,1.0));
occlusion = max(1.0 - (occlusion*2.0)/n, 0.0);
// float skylight = clamp(abs(ambientCoefs.y+1),0.5,1.25) * clamp(abs(ambientCoefs.y+0.5),1.0,1.25);
float skylight = clamp(abs(ambientCoefs.y+1),0.5,2.0) ;
// lighting *= 0.5;
lighting *= mix(1.0,skylight,1);
lighting = lighting*max(occlusion,pow(lightmap.x,4));
}
vec3 DoContrast(vec3 Color){
float Contrast = log(50.0);
return clamp(mix(vec3(0.5), Color, Contrast) ,0,255);
}
void ssDO(inout vec3 lighting, vec3 fragpos,float mulfov, vec2 noise, vec3 normal, vec3 RPnormal, vec2 texcoord, vec3 ambientCoefs, vec2 lightmap, float sunlight){
const int Samples = 7;
vec3 Radiance = vec3(0);
float occlusion = 0.0;
ivec2 pos = ivec2(gl_FragCoord.xy);
const float tan70 = tan(70.*3.14/180.);
// float dist = 1.0 + clamp(fragpos.z*fragpos.z/50.0,0,2); // shrink sample size as distance increases
float mulfov2 = gbufferProjection[1][1]/(tan70 );
float maxR2 = fragpos.z*fragpos.z*mulfov2*2.*5/50.0;
float rd = mulfov2 * 0.1 ;
vec2 acc = -(TAA_Offset*(texelSize/2))*RENDER_SCALE ;
vec3 NormalSpecific = viewToWorld(normal);
for (int j = 0; j < Samples ;j++) {
vec2 sp = tapLocation_alternate(j, 0.0, 7, 20, blueNoise());
float thing = sp.y < 0.0 && clamp(floor(abs(NormalSpecific.y)*2.0),0.0,1.0) < 1.0 ? rd * 10: rd;
vec2 sampleOffset = sp*thing;
vec2 sampleOffset2 = sp*rd ;
sampleOffset = sampleOffset2;
ivec2 offset = ivec2(gl_FragCoord.xy + sampleOffset*vec2(viewWidth,viewHeight*aspectRatio)*RENDER_SCALE);
if (offset.x >= 0 && offset.y >= 0 && offset.x < viewWidth*RENDER_SCALE.x && offset.y < viewHeight*RENDER_SCALE.y ) {
vec3 t0 = toScreenSpace(vec3(offset*texelSize+acc+0.5*texelSize,texelFetch2D(depthtex1,offset,0).x) * vec3(1.0/RENDER_SCALE, 1.0) );
vec3 vec = t0.xyz - fragpos;
float dsquared = dot(vec,vec);
float NdotV2 = clamp(dot(vec*inversesqrt(dsquared), normalize(RPnormal)),0.,1.);
if (dsquared < maxR2){
// float NdotV = clamp(dot(vec*inversesqrt(dsquared), normalize(normal)),0.,1.);
// occlusion += NdotV * clamp(1.0-dsquared/maxR2,0.0,1.0);
vec3 previousPosition = mat3(gbufferModelViewInverse) * t0 + 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 += NdotV2*texture2D(colortex5,previousPosition.xy).rgb ;
}
}
}
}
lighting = vec3(1) + Radiance/Samples;
}
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);
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 <= 0.075) 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;
float x = r * cos(theta);
float y = r * sin(theta);
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));
vec3 B = cross(N, T);
return vec3((T * H.x) + (B * H.y) + (N * H.z));
}
void rtAO(inout vec3 lighting, vec3 normal, vec2 noise, vec3 fragpos, float lightmap, float inShadow){
int nrays = 4;
float occlude = 0.0;
float indoor = clamp(pow(lightmap,2)*2,0.0,AO_Strength);
for (int i = 0; i < nrays; i++){
int seed = (frameCounter%40000)*nrays+i;
vec2 ij = fract(R2_samples(seed) + noise.rg);
vec3 rayDir = TangentToWorld( normal, normalize(cosineHemisphereSample(ij,1.0)) ,1.0) ;
#ifdef HQ_SSGI
vec3 rayHit = rayTrace_GI( mat3(gbufferModelView) * rayDir, fragpos, blueNoise(), 30.); // ssr rt
#else
vec3 rayHit = RT(mat3(gbufferModelView)*rayDir, fragpos, blueNoise(), 24.); // choc sspt
#endif
// vec3 lightDir = normalize(vec3(0.2,0.8,0.2));
// float skyLightDir = dot(rayDir,lightDir); // the positons where the occlusion happens
float skyLightDir = rayDir.y > 0.0 ? 1.0 : max(rayDir.y,1.0-indoor); // the positons where the occlusion happens
// if (rayHit.z > 1.0) occlude += skyLightDir;
occlude += normalize(rayHit.z - 1.0) / (1.1-rayDir.y);
}
// occlude = mix( occlude,1, inShadow);
// occlude = occlude*0.5 + 0.5;
// lighting *= 2.5;
lighting *= occlude/nrays;
}
// void rtGI(inout vec3 lighting, vec3 normal,vec2 noise,vec3 fragpos, float lightmap, vec3 albedo, float inShadow){
// int nrays = RAY_COUNT;
// vec3 intRadiance = vec3(0.0);
// vec3 occlude = vec3(0.0);
// lighting *= 1.50;
// float indoor = clamp(pow(lightmap,2)*2,0.0,AO_Strength);
// 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
// float skyLightDir = rayDir.y > 0.0 ? 1.0 : max(rayDir.y,1.0-indoor); // the positons where the occlusion happens
// if (rayHit.z < 1.){
// 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)
// intRadiance = DoContrast(texture2D(colortex5,previousPosition.xy).rgb) ;
// else
// intRadiance += lighting*skyLightDir; // make sure ambient light exists but at screen edges when you turn
// }else{
// intRadiance += lighting*skyLightDir;
// }
// }
// lighting = intRadiance/nrays;
// }
void rtGI(inout vec3 lighting, vec3 normal,vec2 noise,vec3 fragpos, float lightmap, vec3 albedo, float inShadow){
int nrays = RAY_COUNT;
vec3 intRadiance = vec3(0.0);
vec3 occlusion = vec3(0.0);
vec3 sunlight =vec3(0);
// lighting *= 1.50;
float indoor = clamp(pow(lightmap,2)*2,0.0,AO_Strength);
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
// float skyLightDir = rayDir.y > 0.0 ? 1.0 : max(rayDir.y,1.0-indoor); // the positons where the occlusion happens
// vec3 AO = lighting * (normalize(rayHit.z - 1.0) / (1.1-rayDir.y));
if (rayHit.z < 1){
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){
intRadiance = DoContrast(texture2D(colortex5,previousPosition.xy).rgb ) ;
}
}
occlusion = lighting * (normalize(rayHit.z - 1.0)/(1.1-rayDir.y));
// sunlight = lightCol.rgb * min( normalize(rayHit.z - 1.0) / (1.001-dot(rayDir,WsunVec) ) ,0.1) ;
// if (rayHit.z < 1.){
// 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){
// intRadiance += DoContrast(texture2D(colortex5,previousPosition.xy).rgb) ;
// }else{
// intRadiance += lighting;
// }
// // occlude += 1.0;
// }else{
// intRadiance += lighting;
// }
// occlude = (lighting/nrays)*(normalize(rayHit.z - 1.0) / (1.1-rayDir.y));
}
lighting = occlusion + intRadiance/nrays;
}
float GetCloudShadow(vec3 eyePlayerPos){
vec3 p3 = (eyePlayerPos + cameraPosition) - Cloud_Height;
vec3 cloudPos = p3*Cloud_Size + WsunVec/abs(WsunVec.y) * ((3250 - 3250*0.35) - p3.y*Cloud_Size) ;
float shadow = getCloudDensity(cloudPos, 1);
// float shadow = (getCloudDensity(cloudPos, 1) + HighAltitudeClouds(cloudPos)) / 2.0;
shadow = clamp(exp(-shadow*6),0.0,1.0);
// float timething = (worldTime%24000)*1.0;
// float fadestart_evening = clamp(1.0 - clamp(timething-11500.0 ,0.0,2000.0)/1000. ,0.0,1.0);
// float fadeend_evening = clamp( clamp(14000.0-timething ,0.0,2000.0)/1000. ,0.0,1.0);
// float fadestart_morning = clamp(clamp(23500.0-timething ,0.0,2000.0)/1000. ,0.0,1.0);
// float fadeend_morning = clamp(1.0 - clamp(timething-200.0 ,0.0,2000.0)/1000. ,0.0,1.0);
// float TheSettingSun = fadeend_morning;
return shadow ;
}
void SubsurfaceScattering(inout float SSS, float Scattering, float Density, float LabDenisty){
#ifdef LabPBR_subsurface_scattering
float labcurve = pow(LabDenisty,LabSSS_Curve);
SSS = clamp(exp( -(10 - LabDenisty*7) * sqrt(Scattering) ), 0.0, labcurve);
if (abs(Scattering-0.1) < 0.0004 ) SSS = labcurve;
#else
SSS = clamp(exp( -Density * sqrt(Scattering) ), 0.0, 1.0);
if (abs(Scattering-0.1) < 0.0004 ) SSS = 1.0;
#endif
}
float densityAtPosSNOW(in vec3 pos){
pos /= 18.;
pos.xz *= 0.5;
vec3 p = floor(pos);
vec3 f = fract(pos);
f = (f*f) * (3.-2.*f);
vec2 uv = p.xz + f.xz + p.y * vec2(0.0,193.0);
vec2 coord = uv / 512.0;
vec2 xy = texture2D(noisetex, coord).yx;
return mix(xy.r,xy.g, f.y);
}
// 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,
bool Entities
){
float DistanceOffset = clamp(0.1 + length(WorldPos) / (shadowMapResolution*0.20), 0.0,1.0) ;
vec3 Bias = FlatNormal * DistanceOffset; // adjust the bias thingy's strength as it gets farther away.
// stop lightleaking
if(SkyLightmap < 0.1 && !Entities) {
WorldPos += mix(Bias, 0.5 * (0.5 - fract(WorldPos + cameraPosition + FlatNormal*0.01 ) ), VanillaAO) ;
}else{
WorldPos += Bias;
}
}
//////////////////////////////VOID MAIN//////////////////////////////
//////////////////////////////VOID MAIN//////////////////////////////
//////////////////////////////VOID MAIN//////////////////////////////
//////////////////////////////VOID MAIN//////////////////////////////
//////////////////////////////VOID MAIN//////////////////////////////
void main() {
vec2 texcoord = gl_FragCoord.xy*texelSize;
float dirtAmount = Dirt_Amount;
vec3 waterEpsilon = vec3(Water_Absorb_R, Water_Absorb_G, Water_Absorb_B);
vec3 dirtEpsilon = vec3(Dirt_Absorb_R, Dirt_Absorb_G, Dirt_Absorb_B);
vec3 totEpsilon = dirtEpsilon*dirtAmount + waterEpsilon;
vec3 scatterCoef = dirtAmount * vec3(Dirt_Scatter_R, Dirt_Scatter_G, Dirt_Scatter_B) / pi;
vec2 tempOffset=TAA_Offset;
#ifdef AEROCHROME_MODE
totEpsilon *= 10.0;
scatterCoef *= 0.1;
#endif
float noise = blueNoise();
float z0 = texture2D(depthtex0,texcoord).x;
float z = texture2D(depthtex1,texcoord).x;
vec3 fragpos = toScreenSpace(vec3(texcoord/RENDER_SCALE-vec2(tempOffset)*texelSize*0.5,z));
vec3 p3 = mat3(gbufferModelViewInverse) * fragpos;
vec3 np3 = normVec(p3);
p3 += gbufferModelViewInverse[3].xyz;
float iswaterstuff = texture2D(colortex7,texcoord).a ;
bool iswater = iswaterstuff > 0.99;
vec4 SpecularTex = texture2D(colortex8,texcoord);
vec4 data = texture2D(colortex1,texcoord); // terraom
vec4 dataUnpacked0 = vec4(decodeVec2(data.x),decodeVec2(data.y));
vec4 dataUnpacked1 = vec4(decodeVec2(data.z),decodeVec2(data.w));
vec4 dataUnpacked2 = vec4(decodeVec2(data.z),decodeVec2(data.w));
vec3 albedo = toLinear(vec3(dataUnpacked0.xz,dataUnpacked1.x));
vec4 translucentCol = texture2D(colortex13,texcoord); // translucents
vec3 normal = decode(dataUnpacked0.yw);
vec4 normalAndAO = texture2D(colortex15,texcoord);
float vanilla_AO = normalAndAO.a;
normalAndAO.a = clamp(pow(normalAndAO.a*5,4),0,1);
vec3 FlatNormals = normalAndAO.rgb * 2.0 - 1.0;
vec3 geometryNormal = normalize(cross(dFdx(p3), dFdy(p3)));
#ifdef Horrible_slope_normals
vec3 slope_normal = normalize(clamp(normal, geometryNormal*2.0 - 1.0,geometryNormal*2.0 + 1.0));
#else
vec3 slope_normal = normal;
#endif
vec2 lightmap = dataUnpacked1.yz;
bool translucent = abs(dataUnpacked1.w-0.5) <0.01; // Strong translucency
bool translucent2 = abs(dataUnpacked1.w-0.6) <0.01; // Weak translucency
bool translucent3 = abs(dataUnpacked1.w-0.55) <0.01; // all blocks
bool translucent4 = abs(dataUnpacked1.w-0.65) <0.01; // Weak translucency
bool entities = abs(dataUnpacked1.w-0.45) <0.01;
bool hand = abs(dataUnpacked1.w-0.75) < 0.01;
bool blocklights = abs(dataUnpacked1.w-0.8) <0.01;
vec3 filtered = vec3(1.412,1.0,0.0);
if (!hand) filtered = texture2D(colortex3,texcoord).rgb;
float Diffuse_final = 1.0;
vec3 ambientCoefs = slope_normal/dot(abs(slope_normal),vec3(1.));
float cloudShadow = 1.0;
vec3 color = vec3(0.0);
vec3 skyTEX = skyFromTex(np3,colortex4)/150. ;
float lightleakfix = clamp(eyeBrightness.y/240.0 + lightmap.y,0.0,1.0);
if ( z >= 1.) { //sky
vec4 cloud = texture2D_bicubic(colortex0,texcoord*CLOUDS_QUALITY);
color += stars(np3);
#ifndef ambientLight_only
// #ifdef Allow_Vanilla_sky
// vec3 SkyTextured = toLinear(texture2D(colortex12,texcoord).rgb);
// color += SkyTextured * (lightCol.a == 1 ? lightCol.rgb : 0.75 + blackbody2(Moon_temp)) * sqrt(luma(SkyTextured));
// #else
color += drawSun(dot(lightCol.a * WsunVec, np3),0, lightCol.rgb/150.,vec3(0.0)) ; // sun
color += drawSun(dot(lightCol.a * -WsunVec, np3),0, blackbody2(Moon_temp)/500.,vec3(0.0)); // moon
// #endif
#endif
color *= clamp(normalize(np3-0.02).y*5.0,0.0,1.0); // fade from the approximated base of the cloud plane, so it doesnt peek under it.
color += skyTEX;
color = color*cloud.a+cloud.rgb;
gl_FragData[0].rgb = clamp(fp10Dither(color * 5.0,triangularize(noise)),0.0,65000.);
}else{//land
////// ----- direct ----- //////
vec3 Direct_lighting = vec3(1.0);
vec3 directLightCol = lightCol.rgb;
float NdotL = dot(slope_normal,WsunVec);
float diffuseSun = clamp((-15 + NdotL*255.0) / 240.0 ,0.0,1.0);
float shading = clamp(1.0 - filtered.b,0.0,1.0);
if (abs(filtered.y-0.1) < 0.0004 && !iswater) shading = clamp((lightmap.y-0.85)*25,0,1);
float SSS = 0.0;
float LabSSS = clamp((-65.0 + SpecularTex.z * 255.0) / 190.0 ,0.0,1.0);
float SSS_strength = 0.0;
float scattering = 0.0;
if (diffuseSun > 0.001) {
GriAndEminShadowFix(p3, viewToWorld(FlatNormals), normalAndAO.a, lightmap.y, entities);
// p3 += getShadowBias(p3,FlatNormals, diffuseSun, lightmap.y, normalAndAO.a);
vec3 projectedShadowPosition = mat3(shadowModelView) * p3 + shadowModelView[3].xyz;
projectedShadowPosition = diagonal3(shadowProjection) * projectedShadowPosition + shadowProjection[3].xyz;
//apply distortion
float distortFactor = calcDistort(projectedShadowPosition.xy);
projectedShadowPosition.xy *= distortFactor;
//do shadows only if on shadow map
if (abs(projectedShadowPosition.x) < 1.0-1.5/shadowMapResolution && abs(projectedShadowPosition.y) < 1.0-1.5/shadowMapResolution && abs(projectedShadowPosition.z) < 6.0){
float diffthresh = 0.0;
if(hand && eyeBrightness.y/240. > 0.0) diffthresh = 0.0003;
projectedShadowPosition = projectedShadowPosition * vec3(0.5,0.5,0.5/6.0) + vec3(0.5);
shading = 0.0;
float rdMul = filtered.x*distortFactor*d0*k/shadowMapResolution;
for(int i = 0; i < SHADOW_FILTER_SAMPLE_COUNT; i++){
if(hand) noise = 0.0;
vec2 offsetS = tapLocation(i,SHADOW_FILTER_SAMPLE_COUNT,1.618,noise,0.0);
float weight = 1.0+(i+noise)*rdMul/SHADOW_FILTER_SAMPLE_COUNT*shadowMapResolution;
float isShadow = shadow2D(shadow,vec3(projectedShadowPosition + vec3(rdMul*offsetS,-diffthresh*weight))).x;
shading += isShadow/SHADOW_FILTER_SAMPLE_COUNT;
}
}
}
#ifdef CAVE_LIGHT_LEAK_FIX
if (isEyeInWater == 0 || (iswater && isEyeInWater == 1) ) shading = mix(0.0, shading, lightleakfix);
#endif
#ifdef Sub_surface_scattering
#ifdef Variable_Penumbra_Shadows
if (translucent) SSS_strength = 3; // strong sss
else if (translucent2) SSS_strength = 5; /// weak sss
else if (translucent3) SSS_strength = 5; // misc sss
else if (translucent4) SSS_strength = 10; // mob sss
else SSS_strength = -1; // anything less than zero is no SSS
bool hasSSS = SSS_strength > 0.0 || LabSSS > 0.0 ;
if(hasSSS) SubsurfaceScattering(SSS, filtered.y, SSS_strength, LabSSS) ;
if (isEyeInWater == 0) SSS *= lightleakfix; // light leak fix
#endif
if (!hand){
if (abs(filtered.y-0.1) < 0.0004 && ( !translucent || !translucent2 || !translucent3 || !translucent4 ) ) SSS = 0.0;
#ifndef SCREENSPACE_CONTACT_SHADOWS
if (abs(filtered.y-0.1) < 0.0004 && ( translucent || translucent2 || translucent4 ) ) SSS = clamp((lightmap.y-0.87)*25,0,1) * clamp(pow(1+dot(WsunVec,normal),25),0,1);
#else
vec3 vec = lightCol.a*sunVec;
float screenShadow = rayTraceShadow(vec, fragpos, interleaved_gradientNoise());
#ifdef Variable_Penumbra_Shadows
shading = min(screenShadow, shading);
if (abs(filtered.y-0.1) < 0.0004 && ( translucent || translucent2 ) ) SSS = shading;
// #else
#endif
#endif
}
#ifdef Variable_Penumbra_Shadows
SSS = clamp(SSS, diffuseSun*shading, 1.0);
SSS = (phaseg(clamp(dot(np3, WsunVec),0.0,1.0), 0.5) * 10.0 + 1.0 ) * SSS ;
#endif
#else
SSS = 0.0;
#endif
#ifdef VOLUMETRIC_CLOUDS
#ifdef CLOUDS_SHADOWS
cloudShadow = GetCloudShadow(p3);
shading *= cloudShadow;
SSS *= cloudShadow;
#endif
#endif
Diffuse_final = diffuseSun * shading ;
////// ----- indirect ----- //////
vec3 Indirect_lighting = vec3(1.0);
// vec3 ambientLight = vec3(0.0);
vec3 ambientLight = avgAmbient * 2.0;
vec3 custom_lightmap = texture2D(colortex4, (vec2(lightmap.x, pow(lightmap.y,2))*15.0+0.5+vec2(0.0,19.))*texelSize).rgb*8./150./3.; // y = torch
custom_lightmap.x = max(custom_lightmap.x, Diffuse_final * 8./150./3. ); // make it so that sunlight color is the same even where ambient light is dark
// apply ambient light to the sky lightmap and do adjustments
ambientLight = ambientLight * custom_lightmap.x + custom_lightmap.z;
if( (isEyeInWater == 1 && !iswater) ) ambientLight = avgAmbient * 8./150./3.;
ambientLight *= ambient_brightness;
// add torch lightmap to ambientlight and do adjustments
vec3 Lightsources = custom_lightmap.y * vec3(TORCH_R,TORCH_G,TORCH_B);
if(hand) Lightsources *= 0.15;
// if(blocklights) Lightsources *= 0.3;
if(custom_lightmap.y > 10.0) Lightsources *= 0.3;
// Lightsources *= 0.0;
ambientLight += Lightsources;
// debug for direct or ambient
#ifdef ambientLight_only
directLightCol = vec3(0);
#endif
#ifdef ambientLight_only
Indirect_lighting = vec3(0);
#endif
#if indirect_effect == 0
ambientLight *= 1.0 - exp2(-5 * pow(1-vanilla_AO,3)) ;
float skylight = clamp(abs(ambientCoefs.y+1),0.35,2.0) ;
ambientLight *= skylight;
#endif
#if indirect_effect == 1
// ambientLight *= mix(1.0 - exp2(-5 * pow(1-vanilla_AO,2)), 1.0, diffuseSun*shading) ;
if (!hand) ssAO(ambientLight, fragpos, 1.0, blueNoise(gl_FragCoord.xy).rg, FlatNormals , texcoord, ambientCoefs, lightmap.xy, diffuseSun*shading ) ;
#endif
#if indirect_effect == 2
if (!hand) rtAO(ambientLight, slope_normal, blueNoise(gl_FragCoord.xy).rg, fragpos, lightmap.y, diffuseSun*shading);
#endif
#if indirect_effect == 3
if (!hand) rtGI(ambientLight, slope_normal, blueNoise(gl_FragCoord.xy).rg, fragpos, lightmap.y, (directLightCol/127.0), diffuseSun*shading);
#endif
#if indirect_effect == 4
if (!hand) ssDO(ambientLight, fragpos, 1.0, blueNoise(gl_FragCoord.xy).rg, FlatNormals, worldToView(slope_normal) , texcoord, ambientCoefs, lightmap.xy, diffuseSun*shading ) ;
#endif
vec3 waterabsorb_speculars = vec3(1);
if ((iswater && isEyeInWater == 0) || (!iswater && isEyeInWater == 1) || iswaterstuff == 1.0){
vec3 fragpos0 = toScreenSpace(vec3(texcoord/RENDER_SCALE-vec2(tempOffset)*texelSize*0.5,z0));
float Vdiff = distance(fragpos,fragpos0);
float VdotU = np3.y;
float estimatedDepth = Vdiff * abs(VdotU); //assuming water plane
float estimatedDepth2 = Vdiff * abs(VdotU); //assuming water plane
if (isEyeInWater == 1){
Vdiff = length(fragpos);
estimatedDepth = clamp((15.5-lightmap.y*16.0)/15.5,0.,1.0);
estimatedDepth *= estimatedDepth*estimatedDepth*32.0;
#ifndef lightMapDepthEstimation
estimatedDepth = max(Water_Top_Layer - (cameraPosition.y+p3.y),0.0);
#endif
estimatedDepth2 = clamp((15.5-lightmap.y*16.0)/15.5,0.,1.0);
estimatedDepth2 *= estimatedDepth2*estimatedDepth2*32.0;
}
float estimatedSunDepth = estimatedDepth/abs(WsunVec.y); //assuming water plane
vec3 thething = exp2(-totEpsilon*estimatedSunDepth);
float estimatedSunDepth2 = estimatedDepth2/abs(WsunVec.y); //assuming water plane
vec3 thething2 = max(exp2(-totEpsilon*estimatedSunDepth2),0.01);
// water absorbtion for the sunlight. when this isnt active, the water fog is
if (isEyeInWater == 1) directLightCol *= thething*(0.91-pow(1.0-WsunVec.y,5.0)*0.86);
// allow the sun specular reflection to have water absorbtion when looking at it from outside the water
// waterabsorb_speculars.rgb = (iswater && isEyeInWater == 0) ? waterabsorb_speculars.rgb * thething*(0.91-pow(1.0-WsunVec.y,5.0)*0.86) : waterabsorb_speculars.rgb;
waterabsorb_speculars.rgb = waterabsorb_speculars.rgb*thething;
// caustics...
float Direct_caustics = waterCaustics(mat3(gbufferModelViewInverse) * fragpos + gbufferModelViewInverse[3].xyz + cameraPosition, WsunVec);
float Ambient_Caustics = waterCaustics(mat3(gbufferModelViewInverse) * fragpos + gbufferModelViewInverse[3].xyz + cameraPosition, vec3(0.5, 1.0, 0.5));
// apply caustics to the sunlight
directLightCol *= 0.5 + max(pow(Direct_caustics*2,2),0.0);
// interpolate between normal ambient light to a different ambient light with caustics and water absorbtion
Ambient_Caustics = 0.5 + max(pow(Ambient_Caustics,2),0.0);
// vec3 underwater_ambient = max(Ambient_Caustics ,0.0) ;
// if( (isEyeInWater == 1 && iswater) || (isEyeInWater == 1 && !iswater) ) Indirect_lighting *= 8./150./3.*0.5;
if( isEyeInWater == 1 && !iswater ) Indirect_lighting = Indirect_lighting*thething + Indirect_lighting*Ambient_Caustics*thething2 + Lightsources ;
//combine all light sources
// Direct_lighting = max(Diffuse_final ,SSS) * (directLightCol/127.0);
// gl_FragData[0].rgb = (Indirect_lighting + Direct_lighting) * albedo;
}
#ifdef Seasons
#ifdef Snowy_Winter
float SnowPatches = densityAtPosSNOW(vec3(p3.x,p3.y/48.,p3.z)*250);
SnowPatches = 1.0 - clamp( exp(pow(SnowPatches,3.5) * -100.0) ,0,1);
SnowPatches *= clamp(sqrt(normal.y),0,1) * clamp(pow(lightmap.y,25)*25,0,1);
if(!hand && !iswater){
albedo = mix(albedo, vec3(0.8,0.9,1.0), SnowPatches);
SpecularTex.rg = mix(SpecularTex.rg, vec2(1,0.05), SnowPatches);
}
#endif
#endif
// do this after water and stuff is done because yea
Indirect_lighting = ambientLight;
//combine all light sources
Direct_lighting = (Diffuse_final + SSS) * (directLightCol/127.0) ;
// Direct_lighting = max(Diffuse_final ,SSS) * (directLightCol/127.0) ;
gl_FragData[0].rgb = (Indirect_lighting + Direct_lighting) * albedo;
#ifdef Specular_Reflections
vec3 fragpos_spec = toScreenSpace(gl_FragCoord.xyz*vec3(texelSize/RENDER_SCALE,1.0)-vec3(vec2(tempOffset)*texelSize*0.5,0.0));
vec3 p3_spec = mat3(gbufferModelViewInverse) * fragpos_spec;
vec3 np3_spec = normVec(p3_spec);
MaterialReflections(texcoord, gl_FragData[0].rgb, SpecularTex.r, SpecularTex.ggg, albedo, WsunVec, lightCol.rgb * waterabsorb_speculars, Diffuse_final , lightmap.y, slope_normal, np3, fragpos, vec3(blueNoise(gl_FragCoord.xy).rg, interleaved_gradientNoise()), hand);
#endif
#ifdef LabPBR_Emissives
gl_FragData[0].rgb = SpecularTex.a < 255.0/255.0 ? mix(gl_FragData[0].rgb, albedo * Emissive_Brightness , SpecularTex.a) + Direct_lighting*albedo : gl_FragData[0].rgb;
#endif
}
#ifdef Glass_Tint
// glass tint.
vec4 glassColor = texture2D(colortex13,texcoord);
#ifdef BorderFog
float fog = 1.0 - clamp( exp2(-pow(length(fragpos / far),10.)*4.0) ,0.0,1.0);
if(z < 1.0 && isEyeInWater == 0 && glassColor.a > 0.0) gl_FragData[0].rgb = mix(gl_FragData[0].rgb, skyTEX * 5.0, fog*lightleakfix ) ;
#endif
float colorstrength = 0.75;
glassColor.rgb *= 5.;
if(glassColor.a > 0.0 && !iswater && (iswaterstuff < 0.1 && iswaterstuff > 0.0 )) gl_FragData[0].rgb = gl_FragData[0].rgb*glassColor.rgb + gl_FragData[0].rgb * clamp(pow(1.0-luma(glassColor.rgb),5.),0,1);
#endif
if (iswater){
vec3 fragpos0 = toScreenSpace(vec3(texcoord/RENDER_SCALE-vec2(tempOffset)*texelSize*0.5,z0));
float Vdiff = distance(fragpos,fragpos0);
float VdotU = np3.y;
float estimatedDepth = Vdiff * abs(VdotU); //assuming water plane
float estimatedSunDepth = estimatedDepth/abs(WsunVec.y); //assuming water plane
float custom_lightmap_T = texture2D(colortex14, texcoord).x; // y = torch
vec3 ambientColVol = avgAmbient * 8./150./1.5 * max(custom_lightmap_T,0.0025);
vec3 lightColVol = lightCol.rgb * 8./127. * max(lightleakfix,0.0);
if (isEyeInWater == 0) waterVolumetrics(gl_FragData[0].rgb, fragpos0, fragpos, estimatedDepth, estimatedSunDepth, Vdiff, noise, totEpsilon, scatterCoef, ambientColVol, lightColVol, dot(np3, WsunVec));
}
/* RENDERTARGETS:3 */
}
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