mirror of
https://github.com/X0nk/Bliss-Shader.git
synced 2024-12-22 17:47:34 +08:00
578 lines
18 KiB
GLSL
578 lines
18 KiB
GLSL
// #version 120
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#extension GL_EXT_gpu_shader4 : enable
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varying vec4 lmtexcoord;
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varying vec4 color;
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varying vec4 normalMat;
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varying vec3 binormal;
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uniform sampler2D normals;
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varying vec3 tangent;
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varying vec4 tangent_other;
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varying vec3 viewVector;
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varying float dist;
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#include "lib/settings.glsl"
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#include "/lib/res_params.glsl"
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uniform sampler2D texture;
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uniform sampler2D noisetex;
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uniform sampler2DShadow shadow;
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uniform sampler2D gaux2;
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uniform sampler2D gaux1;
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uniform sampler2D depthtex1;
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uniform vec4 lightCol;
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uniform float nightVision;
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uniform vec3 sunVec;
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uniform float frameTimeCounter;
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uniform float lightSign;
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uniform float near;
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uniform float far;
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uniform float moonIntensity;
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uniform float sunIntensity;
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uniform vec3 sunColor;
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uniform vec3 nsunColor;
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uniform vec3 upVec;
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uniform float sunElevation;
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uniform float fogAmount;
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uniform vec2 texelSize;
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uniform float rainStrength;
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uniform float skyIntensityNight;
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uniform float skyIntensity;
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flat varying vec3 WsunVec;
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uniform mat4 gbufferPreviousModelView;
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uniform vec3 previousCameraPosition;
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uniform int framemod8;
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uniform sampler2D specular;
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uniform int frameCounter;
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uniform int isEyeInWater;
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#include "lib/Shadow_Params.glsl"
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#include "lib/color_transforms.glsl"
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#include "lib/projections.glsl"
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#include "lib/sky_gradient.glsl"
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#include "lib/waterBump.glsl"
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#include "lib/clouds.glsl"
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#include "lib/stars.glsl"
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#include "lib/volumetricClouds.glsl"
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const vec2[8] offsets = vec2[8](vec2(1./8.,-3./8.),
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vec2(-1.,3.)/8.,
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vec2(5.0,1.)/8.,
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vec2(-3,-5.)/8.,
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vec2(-5.,5.)/8.,
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vec2(-7.,-1.)/8.,
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vec2(3,7.)/8.,
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vec2(7.,-7.)/8.);
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float interleaved_gradientNoise(float temporal){
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vec2 coord = gl_FragCoord.xy;
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float noise = fract(52.9829189*fract(0.06711056*coord.x + 0.00583715*coord.y)+temporal);
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return noise;
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}
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vec3 srgbToLinear2(vec3 srgb){
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return mix(
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srgb / 12.92,
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pow(.947867 * srgb + .0521327, vec3(2.4) ),
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step( .04045, srgb )
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);
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}
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vec3 blackbody2(float Temp)
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{
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float t = pow(Temp, -1.5);
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float lt = log(Temp);
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vec3 col = vec3(0.0);
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col.x = 220000.0 * t + 0.58039215686;
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col.y = 0.39231372549 * lt - 2.44549019608;
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col.y = Temp > 6500. ? 138039.215686 * t + 0.72156862745 : col.y;
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col.z = 0.76078431372 * lt - 5.68078431373;
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col = clamp(col,0.0,1.0);
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col = Temp < 1000. ? col * Temp * 0.001 : col;
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return srgbToLinear2(col);
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}
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float blueNoise(){
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return fract(texelFetch2D(noisetex, ivec2(gl_FragCoord.xy)%512, 0).a + 1.0/1.6180339887 * frameCounter);
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}
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float invLinZ (float lindepth){
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return -((2.0*near/lindepth)-far-near)/(far-near);
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}
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float ld(float dist) {
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return (2.0 * near) / (far + near - dist * (far - near));
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}
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vec3 nvec3(vec4 pos){
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return pos.xyz/pos.w;
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}
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vec4 nvec4(vec3 pos){
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return vec4(pos.xyz, 1.0);
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}
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vec3 rayTrace(vec3 dir,vec3 position,float dither, float fresnel, bool inwater){
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float quality = mix(15,SSR_STEPS,fresnel);
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vec3 clipPosition = toClipSpace3(position);
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float rayLength = ((position.z + dir.z * far*sqrt(3.)) > -near) ?
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(-near -position.z) / dir.z : far*sqrt(3.);
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vec3 direction = normalize(toClipSpace3(position+dir*rayLength)-clipPosition); //convert to clip space
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direction.xy = normalize(direction.xy);
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//get at which length the ray intersects with the edge of the screen
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vec3 maxLengths = (step(0.,direction)-clipPosition) / direction;
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float mult = min(min(maxLengths.x,maxLengths.y),maxLengths.z);
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vec3 stepv = direction * mult / quality*vec3(RENDER_SCALE,1.0);
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vec3 spos = clipPosition*vec3(RENDER_SCALE,1.0) + stepv*dither;
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float minZ = clipPosition.z;
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float maxZ = spos.z+stepv.z*0.5;
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spos.xy += offsets[framemod8]*texelSize*0.5/RENDER_SCALE;
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float dist = 1.0 + clamp(position.z*position.z/50.0,0,2); // shrink sample size as distance increases
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for (int i = 0; i <= int(quality); i++) {
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#ifdef USE_QUARTER_RES_DEPTH
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// decode depth buffer
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float sp = sqrt(texelFetch2D(gaux1,ivec2(spos.xy/texelSize/4),0).w/65000.0);
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sp = invLinZ(sp);
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if(sp <= max(maxZ,minZ) && sp >= min(maxZ,minZ)) return vec3(spos.xy/RENDER_SCALE,sp);
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#else
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float sp = texelFetch2D(depthtex1,ivec2(spos.xy/texelSize),0).r;
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if(sp <= max(maxZ,minZ) && sp >= min(maxZ,minZ)) return vec3(spos.xy/RENDER_SCALE,sp);
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#endif
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spos += stepv;
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//small bias
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minZ = maxZ-(0.0001/dist)/ld(spos.z);
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if(inwater) minZ = maxZ-0.0004/ld(spos.z);
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maxZ += stepv.z;
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}
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return vec3(1.1);
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}
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float facos(float sx){
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float x = clamp(abs( sx ),0.,1.);
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float a = sqrt( 1. - x ) * ( -0.16882 * x + 1.56734 );
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return sx > 0. ? a : pi - a;
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}
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float bayer2(vec2 a){
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a = floor(a);
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return fract(dot(a,vec2(0.5,a.y*0.75)));
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}
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float cdist(vec2 coord) {
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return max(abs(coord.s-0.5),abs(coord.t-0.5))*2.0;
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}
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#define PW_DEPTH 0.0 //[0.5 1.0 1.5 2.0 2.5 3.0]
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#define PW_POINTS 1 //[2 4 6 8 16 32]
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#define bayer4(a) (bayer2( .5*(a))*.25+bayer2(a))
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#define bayer8(a) (bayer4( .5*(a))*.25+bayer2(a))
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#define bayer16(a) (bayer8( .5*(a))*.25+bayer2(a))
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#define bayer32(a) (bayer16(.5*(a))*.25+bayer2(a))
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#define bayer64(a) (bayer32(.5*(a))*.25+bayer2(a))
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#define bayer128(a) fract(bayer64(.5*(a))*.25+bayer2(a))
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vec3 getParallaxDisplacement(vec3 posxz, float iswater,float bumpmult,vec3 viewVec) {
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float waveZ = mix(20.0,0.25,iswater);
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float waveM = mix(0.0,4.0,iswater);
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vec3 parallaxPos = posxz;
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vec2 vec = viewVector.xy * (1.0 / float(PW_POINTS)) * 22.0 * PW_DEPTH;
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float waterHeight = getWaterHeightmap(posxz.xz, waveM, waveZ, iswater) ;
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parallaxPos.xz += waterHeight * vec;
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return parallaxPos;
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}
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vec2 tapLocation(int sampleNumber,int nb, float nbRot,float jitter,float distort)
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{
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float alpha = (sampleNumber+jitter)/nb;
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float angle = jitter*6.28 + alpha * nbRot * 6.28;
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float sin_v, cos_v;
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sin_v = sin(angle);
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cos_v = cos(angle);
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return vec2(cos_v, sin_v)*sqrt(alpha);
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}
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//Low discrepancy 2D sequence, integration error is as low as sobol but easier to compute : http://extremelearning.com.au/unreasonable-effectiveness-of-quasirandom-sequences/
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vec2 R2_samples(int n){
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vec2 alpha = vec2(0.75487765, 0.56984026);
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return fract(alpha * n);
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}
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vec4 hash44(vec4 p4)
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{
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p4 = fract(p4 * vec4(.1031, .1030, .0973, .1099));
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p4 += dot(p4, p4.wzxy+33.33);
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return fract((p4.xxyz+p4.yzzw)*p4.zywx);
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}
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vec3 TangentToWorld(vec3 N, vec3 H)
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{
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vec3 UpVector = abs(N.z) < 0.999 ? vec3(0.0, 0.0, 1.0) : vec3(1.0, 0.0, 0.0);
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vec3 T = normalize(cross(UpVector, N));
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vec3 B = cross(N, T);
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return vec3((T * H.x) + (B * H.y) + (N * H.z));
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}
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float GGX (vec3 n, vec3 v, vec3 l, float r, float F0) {
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r*=r;r*=r;
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vec3 h = l + v;
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float hn = inversesqrt(dot(h, h));
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float dotLH = clamp(dot(h,l)*hn,0.,1.);
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float dotNH = clamp(dot(h,n)*hn,0.,1.);
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float dotNL = clamp(dot(n,l),0.,1.);
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float dotNHsq = dotNH*dotNH;
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float denom = dotNHsq * r - dotNHsq + 1.;
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float D = r / (3.141592653589793 * denom * denom);
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float F = F0 + (1. - F0) * exp2((-5.55473*dotLH-6.98316)*dotLH);
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float k2 = .25 * r;
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return dotNL * D * F / (dotLH*dotLH*(1.0-k2)+k2);
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}
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vec3 applyBump(mat3 tbnMatrix, vec3 bump){
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float bumpmult = 1.0;
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bump = bump * vec3(bumpmult, bumpmult, bumpmult) + vec3(0.0f, 0.0f, 1.0f - bumpmult);
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return normalize(bump*tbnMatrix);
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}
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#define fsign(a) (clamp((a)*1e35,0.,1.)*2.-1.)
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float triangularize(float dither)
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{
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float center = dither*2.0-1.0;
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dither = center*inversesqrt(abs(center));
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return clamp(dither-fsign(center),0.0,1.0);
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}
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vec3 fp10Dither(vec3 color,float dither){
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const vec3 mantissaBits = vec3(6.,6.,5.);
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vec3 exponent = floor(log2(color));
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return color + dither*exp2(-mantissaBits)*exp2(exponent);
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}
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float R2_dither(){
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vec2 alpha = vec2(0.75487765, 0.56984026);
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return fract(alpha.x * gl_FragCoord.x + alpha.y * gl_FragCoord.y + 1.0/1.6180339887 * frameCounter) ;
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}
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float interleaved_gradientNoise(){
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vec2 coord = gl_FragCoord.xy + (frameCounter%40000);
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// vec2 coord = gl_FragCoord.xy + frameTimeCounter;
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// vec2 coord = gl_FragCoord.xy;
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float noise = fract( 52.9829189 * fract( (coord.x * 0.06711056) + (coord.y * 0.00583715)) );
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return noise ;
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}
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//encoding by jodie
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float encodeVec2(vec2 a){
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const vec2 constant1 = vec2( 1., 256.) / 65535.;
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vec2 temp = floor( a * 255. );
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return temp.x*constant1.x+temp.y*constant1.y;
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}
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float encodeVec2(float x,float y){
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return encodeVec2(vec2(x,y));
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}
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vec3 viewToWorld(vec3 viewPosition) {
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vec4 pos;
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pos.xyz = viewPosition;
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pos.w = 0.0;
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pos = gbufferModelViewInverse * pos;
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return pos.xyz;
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}
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vec3 worldToView(vec3 worldPos) {
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vec4 pos = vec4(worldPos, 0.0);
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pos = gbufferModelView * pos;
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return pos.xyz;
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}
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vec4 encode (vec3 n, vec2 lightmaps){
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n.xy = n.xy / dot(abs(n), vec3(1.0));
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n.xy = n.z <= 0.0 ? (1.0 - abs(n.yx)) * sign(n.xy) : n.xy;
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vec2 encn = clamp(n.xy * 0.5 + 0.5,-1.0,1.0);
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return vec4(encn,vec2(lightmaps.x,lightmaps.y));
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}
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float square(float x){
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return x*x;
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}
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float g(float NdotL, float roughness){
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float alpha = square(max(roughness, 0.02));
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return 2.0 * NdotL / (NdotL + sqrt(square(alpha) + (1.0 - square(alpha)) * square(NdotL)));
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}
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float gSimple(float dp, float roughness){
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float k = roughness + 1;
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k *= k/8.0;
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return dp / (dp * (1.0-k) + k);
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}
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vec3 GGX2(vec3 n, vec3 v, vec3 l, float r, vec3 F0,float fresnel) {
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float roughness = r;
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float alpha = square(roughness) + 1e-4; // when roughness is zero it fucks up
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vec3 h = normalize(l + v) * mix(1.000, 1.0025, pow(fresnel,2) );
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float dotLH = clamp(dot(h,l),0.,1.);
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float dotNH = clamp(dot(h,n),0.,1.);
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float dotNL = clamp(dot(n,l),0.,1.);
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float dotNV = clamp(dot(n,v),0.,1.);
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float dotVH = clamp(dot(h,v),0.,1.);
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float D = alpha / (0.0541592653589793*square(square(dotNH) * (alpha - 1.0) + 1.0));
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float G = gSimple(dotNV, roughness) * gSimple(dotNL, roughness);
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vec3 F = F0 + (1. - F0) * exp2((-5.55473*dotVH-6.98316)*dotVH);
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return dotNL * F * (G * D / (4 * dotNV * dotNL + 1e-7));
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}
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//////////////////////////////VOID MAIN//////////////////////////////
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//////////////////////////////VOID MAIN//////////////////////////////
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//////////////////////////////VOID MAIN//////////////////////////////
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//////////////////////////////VOID MAIN//////////////////////////////
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//////////////////////////////VOID MAIN//////////////////////////////
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/* RENDERTARGETS:2,7,1,11,13,14 */
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void main() {
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if (gl_FragCoord.x * texelSize.x < RENDER_SCALE.x && gl_FragCoord.y * texelSize.y < RENDER_SCALE.y ) {
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vec2 tempOffset=offsets[framemod8];
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float iswater = normalMat.w;
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vec3 fragC = gl_FragCoord.xyz*vec3(texelSize,1.0);
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vec3 fragpos = toScreenSpace(gl_FragCoord.xyz*vec3(texelSize/RENDER_SCALE,1.0)-vec3(vec2(tempOffset)*texelSize*0.5,0.0));
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gl_FragData[0] = texture2D(texture, lmtexcoord.xy,-5)*color;
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// float avgBlockLum = luma(texture2DLod(texture, lmtexcoord.xy,128).rgb*color.rgb);
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// gl_FragData[0].rgb = clamp((gl_FragData[0].rgb)*pow(avgBlockLum,-0.33)*0.85,0.0,1.0);
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vec3 albedo = toLinear(gl_FragData[0].rgb);
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#ifndef Vanilla_like_water
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if (iswater > 0.4) {
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albedo = vec3(1.0);
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gl_FragData[0] = vec4(0.42,0.6,0.7,0.7);
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}
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if (iswater > 0.9) {
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gl_FragData[0] = vec4(vec3(0.0),1./255.);
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}
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#endif
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#ifdef Vanilla_like_water
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if (iswater > 0.5) {
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gl_FragData[0].a = luma(albedo.rgb);
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albedo = color.rgb;
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}
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#endif
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gl_FragData[4] = vec4(albedo, gl_FragData[0].a);
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vec3 normal = normalMat.xyz;
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vec3 p3 = mat3(gbufferModelViewInverse) * fragpos + gbufferModelViewInverse[3].xyz;
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mat3 tbnMatrix = mat3(tangent.x, binormal.x, normal.x,
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tangent.y, binormal.y, normal.y,
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tangent.z, binormal.z, normal.z);
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if (iswater > 0.4){
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float bumpmult = 1.;
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vec3 posxz = p3+cameraPosition;
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posxz.xz-=posxz.y;
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vec3 bump;
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posxz.xyz = getParallaxDisplacement(posxz,iswater,bumpmult,normalize(tbnMatrix*fragpos));
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bump = normalize(getWaveHeight(posxz.xz,iswater));
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bump = bump * vec3(bumpmult, bumpmult, bumpmult) + vec3(0.0f, 0.0f, 1.0f - bumpmult);
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normal = normalize(bump * tbnMatrix);
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}else {
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vec3 normalTex = texture2D(normals, lmtexcoord.xy, Texture_MipMap_Bias).rgb;
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normalTex.xy = normalTex.xy*2.0-1.0;
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normalTex.z = clamp(sqrt(1.0 - dot(normalTex.xy, normalTex.xy)),0.0,1.0);
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normal = applyBump(tbnMatrix,normalTex);
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}
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vec4 data0 = vec4(1);
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vec4 data1 = clamp( encode(viewToWorld(normal), lmtexcoord.zw),0.0,1.0);
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gl_FragData[3] = vec4(encodeVec2(data0.x,data1.x), encodeVec2(data0.y,data1.y), encodeVec2(data0.z,data1.z), encodeVec2(data1.w,data0.w));
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gl_FragData[5] = vec4(encodeVec2(lmtexcoord.a,lmtexcoord.a), encodeVec2(lmtexcoord.a,lmtexcoord.a), encodeVec2(lmtexcoord.a,lmtexcoord.a), encodeVec2(lmtexcoord.a,lmtexcoord.a));
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float NdotL = lightSign*dot(normal,sunVec);
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float NdotU = dot(upVec,normal);
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float diffuseSun = clamp(NdotL,0.0f,1.0f);
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diffuseSun = clamp((-15 + diffuseSun*255.0) / 240.0 ,0.0,1.0);
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vec3 direct = texelFetch2D(gaux1,ivec2(6,37),0).rgb/127.0;
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#ifdef ambientLight_only
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direct = vec3(0);
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#endif
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float shading = 1.0;
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float cloudShadow = 1.0;
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//compute shadows only if not backface
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if (diffuseSun > 0.001) {
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vec3 p3 = mat3(gbufferModelViewInverse) * fragpos + gbufferModelViewInverse[3].xyz;
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vec3 projectedShadowPosition = mat3(shadowModelView) * p3 + shadowModelView[3].xyz;
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projectedShadowPosition = diagonal3(shadowProjection) * projectedShadowPosition + shadowProjection[3].xyz;
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//apply distortion
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float distortFactor = calcDistort(projectedShadowPosition.xy);
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projectedShadowPosition.xy *= distortFactor;
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//do shadows only if on shadow map
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if (abs(projectedShadowPosition.x) < 1.0-1.5/shadowMapResolution && abs(projectedShadowPosition.y) < 1.0-1.5/shadowMapResolution){
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const float threshMul = max(2048.0/shadowMapResolution*shadowDistance/128.0,0.95);
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float distortThresh = (sqrt(1.0-diffuseSun*diffuseSun)/diffuseSun+0.7)/distortFactor;
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float diffthresh = distortThresh/6000.0*threshMul;
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projectedShadowPosition = projectedShadowPosition * vec3(0.5,0.5,0.5/6.0) + vec3(0.5,0.5,0.5);
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shading = 0.0;
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float noise = blueNoise();
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float rdMul = 4.0/shadowMapResolution;
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for(int i = 0; i < 9; i++){
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vec2 offsetS = tapLocation(i,9, 1.618,noise,0.0);
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float weight = 1.0+(i+noise)*rdMul/9.0*shadowMapResolution;
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shading += shadow2D(shadow,vec3(projectedShadowPosition + vec3(rdMul*offsetS,-diffthresh*weight))).x/9.0;
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}
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direct *= shading;
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}
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#ifdef VOLUMETRIC_CLOUDS
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#ifdef CLOUDS_SHADOWS
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vec3 campos = (p3 + cameraPosition)-319 ;
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// get cloud position
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vec3 cloudPos = campos*Cloud_Size + WsunVec/abs(WsunVec.y) * (2250 - campos.y*Cloud_Size);
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// get the cloud density and apply it
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cloudShadow = getCloudDensity(cloudPos, 1);
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// cloudShadow = exp(-cloudShadow*sqrt(cloudDensity)*25);
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cloudShadow = clamp(exp(-cloudShadow*10),0,1);
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// make these turn to zero when occluded by the cloud shadow
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direct *= cloudShadow;
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#endif
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#endif
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}
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vec3 ambientLight = (texture2D(gaux1,(lmtexcoord.zw*15.+0.5)*texelSize).rgb * 2.0) * 8./150./3.;
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direct *= (iswater > 0.9 ? 0.2: 1.0)*diffuseSun*lmtexcoord.w;
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vec3 directLight = direct;
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vec3 color = vec3(0);
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color += ambientLight ;
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color += directLight;
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#ifdef Glass_Tint
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float alphashit = min(pow(gl_FragData[0].a,2.0),1.0);
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color *= alphashit;
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#endif
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color *= albedo;
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vec2 specularstuff = texture2D(specular, lmtexcoord.xy, Texture_MipMap_Bias).rg;
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specularstuff = iswater > 0.0 && specularstuff.r > 0.0 && specularstuff.g < 0.9 ? specularstuff : vec2(1.0,0.02);
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if (iswater > 0.0){
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float roughness = pow(1.0-specularstuff.r,2.0);
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float f0 = 0;
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|
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float F0 = f0;
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|
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vec3 reflectedVector = reflect(normalize(fragpos), normal);
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|
float normalDotEye = dot(normal, normalize(fragpos));
|
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float fresnel = pow(clamp(1.0 + normalDotEye,0.0,1.0), 5.0);
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|
|
|
// snells window looking thing
|
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if(isEyeInWater == 1 && iswater > 0.99) fresnel = clamp(pow(1.66 + normalDotEye,25),0.02,1.0);
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|
|
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fresnel = mix(F0, 1.0, fresnel);
|
|
float indoors = clamp((lmtexcoord.w-0.6)*5.0, 0.0,1.0);
|
|
vec3 wrefl = mat3(gbufferModelViewInverse)*reflectedVector;
|
|
|
|
vec3 sky_c = skyCloudsFromTex(wrefl,gaux1).rgb / 150. * 5. ;
|
|
sky_c.rgb *= indoors;
|
|
|
|
float visibilityFactor = clamp(exp2((pow(roughness,3.0) / F0) * -4),0,1);
|
|
|
|
sky_c = mix(sky_c,color,(1.0-indoors)) ;
|
|
|
|
vec4 reflection = vec4(0.);
|
|
#ifdef SCREENSPACE_REFLECTIONS
|
|
vec3 rtPos = rayTrace(reflectedVector,fragpos.xyz, interleaved_gradientNoise(), fresnel, isEyeInWater == 1);
|
|
if (rtPos.z <1.){
|
|
vec3 previousPosition = mat3(gbufferModelViewInverse) * toScreenSpace(rtPos) + 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) {
|
|
reflection.a = 1.0;
|
|
reflection.rgb = texture2D(gaux2,previousPosition.xy).rgb;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if(isEyeInWater == 1 ) sky_c.rgb = color.rgb*lmtexcoord.w;
|
|
|
|
reflection.rgb = mix(sky_c.rgb, reflection.rgb, reflection.a);
|
|
|
|
vec3 sunSpec = shading*directLight * GGX2(normal, -normalize(fragpos), lightSign*sunVec, roughness, vec3(f0), fresnel) ;
|
|
|
|
sunSpec *= max(cloudShadow-0.5,0.0);
|
|
|
|
vec3 reflected = reflection.rgb*fresnel + sunSpec ;
|
|
|
|
// reflected = vec3(0);
|
|
|
|
float alpha0 = gl_FragData[0].a;
|
|
// //correct alpha channel with fresnel
|
|
gl_FragData[0].a = -gl_FragData[0].a*fresnel+gl_FragData[0].a+fresnel;
|
|
gl_FragData[0].rgb = clamp(color/gl_FragData[0].a*alpha0*(1.0-fresnel)*0.1+reflected/gl_FragData[0].a*0.1,0.0,65100.0);
|
|
|
|
|
|
|
|
if (gl_FragData[0].r > 65000.) gl_FragData[0].rgba = vec4(0.);
|
|
|
|
#ifdef BorderFog
|
|
float fog = 1.0 - clamp( exp2(-pow(length(fragpos / far),10.)*3.0) ,0.0,1.0);
|
|
gl_FragData[0].a = mix(gl_FragData[0].a, 0.0, fog);
|
|
#endif
|
|
|
|
}
|
|
else
|
|
gl_FragData[0].rgb = color*.1;
|
|
|
|
gl_FragData[1] = vec4(albedo,iswater);
|
|
|
|
}
|
|
}
|