| 1 |
- {"ast":null,"code":"// Do not edit.\nimport { ShaderStore } from \"../Engines/shaderStore.js\";\nconst name = \"iblShadowVoxelTracingPixelShader\";\nconst shader = `#define PI 3.1415927\nvarying vUV: vec2f;\n#define DISABLE_UNIFORMITY_ANALYSIS\nvar depthSampler: texture_2d<f32>;var worldNormalSampler : texture_2d<f32>;var blueNoiseSampler: texture_2d<f32>;var icdfxSamplerSampler: sampler;var icdfxSampler: texture_2d<f32>;var icdfySamplerSampler: sampler;var icdfySampler: texture_2d<f32>;var voxelGridSamplerSampler: sampler;var voxelGridSampler: texture_3d<f32>;uniform shadowParameters: vec4f;\n#define SHADOWdirs uniforms.shadowParameters.x\n#define SHADOWframe uniforms.shadowParameters.y\n#define SHADOWenvRot uniforms.shadowParameters.w\nuniform voxelBiasParameters : vec4f;\n#define highestMipLevel uniforms.voxelBiasParameters.z\nuniform sssParameters: vec4f;\n#define SSSsamples uniforms.sssParameters.x\n#define SSSstride uniforms.sssParameters.y\n#define SSSmaxDistance uniforms.sssParameters.z\n#define SSSthickness uniforms.sssParameters.w\nuniform shadowOpacity: vec4f;uniform projMtx: mat4x4f;uniform viewMtx: mat4x4f;uniform invProjMtx: mat4x4f;uniform invViewMtx: mat4x4f;uniform wsNormalizationMtx: mat4x4f;uniform invVPMtx: mat4x4f;\n#define PI 3.1415927\n#define GOLD 0.618034\nstruct AABB3f {m_min: vec3f,\nm_max: vec3f,};struct Ray {orig: vec3f,\ndir: vec3f,\ndir_rcp: vec3f,\nt_min: f32,\nt_max: f32,};fn make_ray(origin: vec3f,direction: vec3f,tmin: f32,\ntmax: f32)->Ray {var ray: Ray;ray.orig=origin;ray.dir=direction;ray.dir_rcp=1.0f/direction;ray.t_min=tmin;ray.t_max=tmax;return ray;}\nfn ray_box_intersection(aabb: AABB3f,ray: Ray ,\ndistance_near: ptr<function,f32>,distance_far: ptr<function,f32>)->bool{var tbot: vec3f=ray.dir_rcp*(aabb.m_min-ray.orig);var ttop: vec3f=ray.dir_rcp*(aabb.m_max-ray.orig);var tmin: vec3f=min(ttop,tbot);var tmax: vec3f=max(ttop,tbot);*distance_near=max(ray.t_min,max(tmin.x,max(tmin.y,tmin.z)));*distance_far=min(ray.t_max,min(tmax.x,min(tmax.y,tmax.z)));return *distance_near<=*distance_far;}\n#if VOXEL_MARCH_DIAGNOSTIC_INFO_OPTION\nstruct VoxelMarchDiagnosticInfo {heat: f32,\nvoxel_intersect_coords: vec3i,};\n#endif\nfn hash(i: u32)->u32 {var temp=i ^ (i>>16u);temp*=0x7FEB352Du;temp ^= temp>>15u;temp*=0x846CA68Bu;temp ^= temp>>16u;return temp;}\nfn uintBitsToFloat(x: u32)->f32 {return bitcast<f32>(x);}\nfn uint2float(i: u32)->f32 {return uintBitsToFloat(0x3F800000u | (i>>9u))-1.0;}\nfn uv_to_normal(uv: vec2f)->vec3f {var N: vec3f;var uvRange: vec2f=uv;var theta: f32=uvRange.x*2.0*PI;var phi: f32=uvRange.y*PI;N.x=cos(theta)*sin(phi);N.z=sin(theta)*sin(phi);N.y=cos(phi);return N;}\nfn plasticSequence(rstate: u32)->vec2f {return vec2f(uint2float(rstate*3242174889u),\nuint2float(rstate*2447445414u));}\nfn goldenSequence(rstate: u32)->f32 {return uint2float(rstate*2654435769u);}\nfn distanceSquared(a: vec2f,b: vec2f)->f32 {var diff: vec2f=a-b;return dot(diff,diff);}\nfn genTB(N: vec3f,T: ptr<function,vec3f>,B: ptr<function,vec3f>) {var s: f32=select(1.0,-1.0,N.z<0.0);var a: f32=-1.0/(s+N.z);var b: f32=N.x*N.y*a;*T= vec3f(1.0+s*N.x*N.x*a,s*b,-s*N.x);*B= vec3f(b,s+N.y*N.y*a,-N.y);}\nfn lessThan(x: vec3f,y: vec3f)->vec3<bool> {return x<y;}\n#ifdef VOXEL_MARCH_DIAGNOSTIC_INFO_OPTION\nfn anyHitVoxels(ray_vs: Ray,\nvoxel_march_diagnostic_info: ptr<function,VoxelMarchDiagnosticInfo>)->bool {\n#else\nfn anyHitVoxels(ray_vs: Ray)->bool {\n#endif\nvar stack=array<i32,24>(); \nvar invD: vec3f=ray_vs.dir_rcp;var D: vec3f=ray_vs.dir;var O: vec3f=ray_vs.orig;var negD=vec3i(lessThan(D, vec3f(0,0,0)));var voxel0: i32=negD.x | (negD.y<<1) | (negD.z<<2);var t0: vec3f=-O*invD;var t1=(vec3f(1.0)-O)*invD;var maxLod: i32= i32(highestMipLevel);var stackLevel: i32=0;\n#if VOXEL_MARCH_DIAGNOSTIC_INFO_OPTION\nvar steps: u32=0u;\n#endif\nstack[stackLevel]=maxLod<<24;stackLevel++;while (stackLevel>0) {stackLevel=stackLevel-1;var elem: i32=stack[stackLevel];var Coords: vec4i =\nvec4i(elem & 0xFF,(elem>>8) & 0xFF,(elem>>16) & 0xFF,elem>>24);if (Coords.w==0) {\n#if VOXEL_MARCH_DIAGNOSTIC_INFO_OPTION\n*voxel_march_diagnostic_info.heat= f32(steps)/24.0;\n#endif\nreturn true;}\n#if VOXEL_MARCH_DIAGNOSTIC_INFO_OPTION\n++steps;\n#endif\nvar invRes: f32=exp2(f32(Coords.w-maxLod));var bbmin: vec3f=invRes*vec3f(Coords.xyz+negD);var bbmax: vec3f=invRes*vec3f(Coords.xyz-negD+vec3i(1));var mint: vec3f=mix(t0,t1,bbmin);var maxt: vec3f=mix(t0,t1,bbmax);var midt: vec3f=0.5*(mint+maxt);mint.x=max(0.0,mint.x);midt.x=max(0.0,midt.x);var nodeMask: u32= u32(\nround(textureLoad(voxelGridSampler,Coords.xyz,Coords.w).x*255.0));Coords.w--;var voxelBit: u32=u32(voxel0);Coords=vec4i((Coords.xyz<<vec3u(1))+negD,Coords.w);var packedCoords: i32 =\nCoords.x | (Coords.y<<8) | (Coords.z<<16) | (Coords.w<<24);if (max(mint.x,max(mint.y,mint.z))<min(midt.x,min(midt.y,midt.z)) &&\n((1u<<voxelBit) & nodeMask) != 0) {stack[stackLevel]=packedCoords;stackLevel++;}\nvoxelBit ^= 0x1;packedCoords ^= 0x00001;if (max(midt.x,max(mint.y,mint.z))<min(maxt.x,min(midt.y,midt.z)) &&\n((1u<<voxelBit) & nodeMask) != 0) {stack[stackLevel]=packedCoords;stackLevel++;}\nvoxelBit ^= 0x2;packedCoords ^= 0x00100;if (max(midt.x,max(midt.y,mint.z))<min(maxt.x,min(maxt.y,midt.z)) &&\n((1u<<voxelBit) & nodeMask) != 0) {stack[stackLevel]=packedCoords;stackLevel++;}\nvoxelBit ^= 0x1;packedCoords ^= 0x00001;if (max(mint.x,max(midt.y,mint.z))<min(midt.x,min(maxt.y,midt.z)) &&\n((1u<<voxelBit) & nodeMask) != 0) {stack[stackLevel]=packedCoords;stackLevel++;}\nvoxelBit ^= 0x4;packedCoords ^= 0x10000;if (max(mint.x,max(midt.y,midt.z))<min(midt.x,min(maxt.y,maxt.z)) &&\n((1u<<voxelBit) & nodeMask) != 0) {stack[stackLevel]=packedCoords;stackLevel++;}\nvoxelBit ^= 0x1;packedCoords ^= 0x00001;if (max(midt.x,max(midt.y,midt.z))<min(maxt.x,min(maxt.y,maxt.z)) &&\n((1u<<voxelBit) & nodeMask) != 0) {stack[stackLevel]=packedCoords;stackLevel++;}\nvoxelBit ^= 0x2;packedCoords ^= 0x00100;if (max(midt.x,max(mint.y,midt.z))<min(maxt.x,min(midt.y,maxt.z)) &&\n((1u<<voxelBit) & nodeMask) != 0) {stack[stackLevel]=packedCoords;stackLevel++;}\nvoxelBit ^= 0x1;packedCoords ^= 0x00001;if (max(mint.x,max(mint.y,midt.z))<min(midt.x,min(midt.y,maxt.z)) &&\n((1u<<voxelBit) & nodeMask) != 0) {stack[stackLevel]=packedCoords;stackLevel++;}}\n#if VOXEL_MARCH_DIAGNOSTIC_INFO_OPTION\n*voxel_march_diagnostic_info.heat= f32(steps)/24.0;\n#endif\nreturn false;}\nfn linearizeDepth(depth: f32,near: f32,far: f32)->f32 {return (near*far)/(far-depth*(far-near));}\nfn screenSpaceShadow(csOrigin: vec3f,csDirection: vec3f,csZBufferSize: vec2f,\nnearPlaneZ: f32,farPlaneZ: f32,noise: f32)->f32 {\n#ifdef RIGHT_HANDED\nvar csZDir : f32=-1.0;\n#else \nvar csZDir : f32=1.0;\n#endif\nvar ssSamples: f32=SSSsamples;var ssMaxDist: f32=SSSmaxDistance;var ssStride: f32=SSSstride;var ssThickness: f32=SSSthickness;var rayLength: f32 =\nselect(ssMaxDist,(nearPlaneZ-csOrigin.z)/csDirection.z,\ncsZDir*(csOrigin.z+ssMaxDist*csDirection.z)<csZDir*nearPlaneZ);var csEndPoint: vec3f=csOrigin+rayLength*csDirection;var H0: vec4f=uniforms.projMtx*vec4f(csOrigin,1.0);var H1: vec4f=uniforms.projMtx*vec4f(csEndPoint,1.0);var Z0=vec2f(csOrigin.z ,1.0)/H0.w;var Z1=vec2f(csEndPoint.z,1.0)/H1.w;var P0=csZBufferSize*(0.5*H0.xy*Z0.y+0.5);var P1=csZBufferSize*(0.5*H1.xy*Z1.y+0.5);P1+= vec2f(select(0.0,0.01,distanceSquared(P0,P1)<0.0001));var delta: vec2f=P1-P0;var permute: bool=false;if (abs(delta.x)<abs(delta.y)) {permute=true;P0=P0.yx;P1=P1.yx;delta=delta.yx;}\nvar stepDirection: f32=sign(delta.x);var invdx: f32=stepDirection/delta.x;var dP: vec2f=ssStride* vec2f(stepDirection,invdx*delta.y);var dZ: vec2f=ssStride*invdx*(Z1-Z0);var opacity: f32=0.0;var P: vec2f=P0+noise*dP;var Z: vec2f=Z0+noise*dZ;var end: f32=P1.x*stepDirection;var rayZMax=csZDir*Z.x/Z.y;var sceneDepth=rayZMax;Z+=dZ;for (var stepCount: f32=0.0; \nopacity<1.0 && P.x*stepDirection<end && sceneDepth>0.0 && stepCount<ssSamples;stepCount+=1) { \nvar coords=vec2i(select(P,P.yx,permute));sceneDepth=textureLoad(depthSampler,coords,0).x;sceneDepth=linearizeDepth(sceneDepth,nearPlaneZ,farPlaneZ);sceneDepth=csZDir*sceneDepth;if (sceneDepth<=0.0) {break;}\nvar rayZMin: f32=rayZMax;rayZMax=csZDir*Z.x/Z.y;opacity+=max(opacity,step(rayZMax,sceneDepth+ssThickness)*step(sceneDepth,rayZMin));P+=dP;Z+=dZ;}\nreturn opacity;}\n#if VOXEL_MARCH_DIAGNOSTIC_INFO_OPTION\nfn voxelShadow(wsOrigin: vec3f,wsDirection: vec3f,wsNormal: vec3f,\nDitherNoise: vec2f,\nvoxel_march_diagnostic_info: ptr<function,VoxelMarchDiagnosticInfo>)->f32 {\n#else\nfn voxelShadow(wsOrigin: vec3f,wsDirection: vec3f,wsNormal: vec3f,\nDitherNoise: vec2f)->f32 {\n#endif\nvar vxResolution: f32=f32(textureDimensions(voxelGridSampler,0).x);var T: vec3f;var B: vec3f;genTB(wsDirection,&T,&B);var DitherXY: vec2f=sqrt(DitherNoise.x)* vec2f(cos(2.0*PI*DitherNoise.y),\nsin(2.0*PI*DitherNoise.y));var Dithering : vec3f=(uniforms.voxelBiasParameters.x*wsNormal +\nuniforms.voxelBiasParameters.y*wsDirection +\nDitherXY.x*T+DitherXY.y*B) /\nvxResolution;var O: vec3f=0.5*wsOrigin+0.5+Dithering;var ray_vs=make_ray(O,wsDirection,0.0,10.0);var voxel_aabb: AABB3f;voxel_aabb.m_min=vec3f(0);voxel_aabb.m_max=vec3f(1);var near: f32=0;var far: f32=0;if (!ray_box_intersection(voxel_aabb,ray_vs,&near,&far)) {return 0.0;}\nray_vs.t_min=max(ray_vs.t_min,near);ray_vs.t_max=min(ray_vs.t_max,far);\n#if VOXEL_MARCH_DIAGNOSTIC_INFO_OPTION\nreturn select(0.0f,1.0f,anyHitVoxels(ray_vs,voxel_march_diagnostic_info));\n#else\nreturn select(0.0f,1.0f,anyHitVoxels(ray_vs));\n#endif\n}\n@fragment\nfn main(input: FragmentInputs)->FragmentOutputs {var nbDirs=u32(SHADOWdirs);var frameId=u32(SHADOWframe);var envRot: f32=SHADOWenvRot;var Resolution: vec2f= vec2f(textureDimensions(depthSampler,0));var currentPixel=vec2i(fragmentInputs.vUV*Resolution);var GlobalIndex =\n(frameId*u32(Resolution.y)+u32(currentPixel.y))*u32(Resolution.x) +\nu32(currentPixel.x);var N : vec3f=textureLoad(worldNormalSampler,currentPixel,0).xyz;if (length(N)<0.01) {fragmentOutputs.color=vec4f(1.0,1.0,0.0,1.0);return fragmentOutputs;}\nvar normalizedRotation: f32=envRot/(2.0*PI);var depth : f32=textureLoad(depthSampler,currentPixel,0).x;\n#ifndef IS_NDC_HALF_ZRANGE\ndepth=depth*2.0-1.0;\n#endif\nvar temp : vec2f=(vec2f(currentPixel)+vec2f(0.5))*2.0/Resolution -\nvec2f(1.0);var VP : vec4f=uniforms.invProjMtx*vec4f(temp.x,-temp.y,depth,1.0);VP/=VP.w;N=normalize(N);var noise\n: vec3f =\ntextureLoad(blueNoiseSampler,currentPixel & vec2i(0xFF),0).xyz;noise.z=fract(noise.z+goldenSequence(frameId*nbDirs));\n#ifdef VOXEL_MARCH_DIAGNOSTIC_INFO_OPTION\nvar heat: f32=0.0f;\n#endif\nvar shadowAccum: f32=0.0;var specShadowAccum: f32=0.0;var sampleWeight : f32=0;for (var i: u32=0; i<nbDirs; i++) {var dirId: u32=nbDirs*GlobalIndex+i;var L: vec4f;{var r: vec2f=plasticSequence(frameId*nbDirs+i);r=fract(r+ vec2f(2.0)*abs(noise.xy- vec2f(0.5)));var T: vec2f;T.x=textureSampleLevel(icdfxSampler,icdfxSamplerSampler,vec2f(r.x,0.0),0.0).x;T.y=textureSampleLevel(icdfySampler,icdfySamplerSampler,vec2f(T.x,r.y),0.0).x;T.x-=normalizedRotation;L= vec4f(uv_to_normal(T),0);\n#ifndef RIGHT_HANDED\nL.z*=-1.0;\n#endif\n}\nvar edge_tint_const=-0.001;var cosNL: f32=dot(N,L.xyz);var opacity: f32=select(0.0,1.0,cosNL<edge_tint_const);if (cosNL>edge_tint_const) {var VP2: vec4f=VP;VP2.y*=-1.0;var unormWP : vec4f=uniforms.invViewMtx*VP2;var WP: vec3f=(uniforms.wsNormalizationMtx*unormWP).xyz;var vxNoise: vec2f =\nvec2f(uint2float(hash(dirId*2)),uint2float(hash(dirId*2+1)));\n#ifdef VOXEL_MARCH_DIAGNOSTIC_INFO_OPTION\nVoxelMarchDiagnosticInfo voxel_march_diagnostic_info;opacity=max(opacity,\nuniforms.shadowOpacity.x*voxelShadow(WP,L.xyz,N,vxNoise,\nvoxel_march_diagnostic_info));heat+=voxel_march_diagnostic_info.heat;\n#else\nopacity =\nmax(opacity,uniforms.shadowOpacity.x*voxelShadow(WP,L.xyz,N,vxNoise));\n#endif\nvar VL : vec3f=(uniforms.viewMtx*L).xyz;\n#ifdef RIGHT_HANDED\nvar nearPlaneZ: f32=-2.0*uniforms.projMtx[3][2]/(uniforms.projMtx[2][2]-1.0); \nvar farPlaneZ: f32=-uniforms.projMtx[3][2]/(uniforms.projMtx[2][2]+1.0);\n#else\nvar nearPlaneZ: f32=-2.0*uniforms.projMtx[3][2]/(uniforms.projMtx[2][2]+1.0); \nvar farPlaneZ: f32=-uniforms.projMtx[3][2]/(uniforms.projMtx[2][2]-1.0);\n#endif\nvar ssShadow: f32=uniforms.shadowOpacity.y *\nscreenSpaceShadow(VP2.xyz,VL,Resolution,nearPlaneZ,farPlaneZ,\nabs(2.0*noise.z-1.0));opacity=max(opacity,ssShadow);shadowAccum+=min(1.0-opacity,cosNL);sampleWeight+=cosNL;var VR : vec3f=-(uniforms.viewMtx*vec4f(reflect(-L.xyz,N),0.0)).xyz;specShadowAccum+=max(1.0-(opacity*pow(VR.z,8.0)),0.0);}\nnoise.z=fract(noise.z+GOLD);}\n#ifdef VOXEL_MARCH_DIAGNOSTIC_INFO_OPTION\nfragmentOutputs.color =\nvec4f(shadowAccum/sampleWeight,specShadowAccum/sampleWeight,heat/sampleWeight,1.0);\n#else\nfragmentOutputs.color=vec4f(shadowAccum/sampleWeight,specShadowAccum/sampleWeight,0.0,1.0);\n#endif\n}`;\n// Sideeffect\nShaderStore.ShadersStoreWGSL[name] = shader;\n/** @internal */\nexport const iblShadowVoxelTracingPixelShaderWGSL = {\n name,\n shader\n};","map":{"version":3,"names":["ShaderStore","name","shader","ShadersStoreWGSL","iblShadowVoxelTracingPixelShaderWGSL"],"sources":["F:/workspace/202226701027/huinongbao-app/node_modules/@babylonjs/core/ShadersWGSL/iblShadowVoxelTracing.fragment.js"],"sourcesContent":["// Do not edit.\nimport { ShaderStore } from \"../Engines/shaderStore.js\";\nconst name = \"iblShadowVoxelTracingPixelShader\";\nconst shader = `#define PI 3.1415927\nvarying vUV: vec2f;\n#define DISABLE_UNIFORMITY_ANALYSIS\nvar depthSampler: texture_2d<f32>;var worldNormalSampler : texture_2d<f32>;var blueNoiseSampler: texture_2d<f32>;var icdfxSamplerSampler: sampler;var icdfxSampler: texture_2d<f32>;var icdfySamplerSampler: sampler;var icdfySampler: texture_2d<f32>;var voxelGridSamplerSampler: sampler;var voxelGridSampler: texture_3d<f32>;uniform shadowParameters: vec4f;\n#define SHADOWdirs uniforms.shadowParameters.x\n#define SHADOWframe uniforms.shadowParameters.y\n#define SHADOWenvRot uniforms.shadowParameters.w\nuniform voxelBiasParameters : vec4f;\n#define highestMipLevel uniforms.voxelBiasParameters.z\nuniform sssParameters: vec4f;\n#define SSSsamples uniforms.sssParameters.x\n#define SSSstride uniforms.sssParameters.y\n#define SSSmaxDistance uniforms.sssParameters.z\n#define SSSthickness uniforms.sssParameters.w\nuniform shadowOpacity: vec4f;uniform projMtx: mat4x4f;uniform viewMtx: mat4x4f;uniform invProjMtx: mat4x4f;uniform invViewMtx: mat4x4f;uniform wsNormalizationMtx: mat4x4f;uniform invVPMtx: mat4x4f;\n#define PI 3.1415927\n#define GOLD 0.618034\nstruct AABB3f {m_min: vec3f,\nm_max: vec3f,};struct Ray {orig: vec3f,\ndir: vec3f,\ndir_rcp: vec3f,\nt_min: f32,\nt_max: f32,};fn make_ray(origin: vec3f,direction: vec3f,tmin: f32,\ntmax: f32)->Ray {var ray: Ray;ray.orig=origin;ray.dir=direction;ray.dir_rcp=1.0f/direction;ray.t_min=tmin;ray.t_max=tmax;return ray;}\nfn ray_box_intersection(aabb: AABB3f,ray: Ray ,\ndistance_near: ptr<function,f32>,distance_far: ptr<function,f32>)->bool{var tbot: vec3f=ray.dir_rcp*(aabb.m_min-ray.orig);var ttop: vec3f=ray.dir_rcp*(aabb.m_max-ray.orig);var tmin: vec3f=min(ttop,tbot);var tmax: vec3f=max(ttop,tbot);*distance_near=max(ray.t_min,max(tmin.x,max(tmin.y,tmin.z)));*distance_far=min(ray.t_max,min(tmax.x,min(tmax.y,tmax.z)));return *distance_near<=*distance_far;}\n#if VOXEL_MARCH_DIAGNOSTIC_INFO_OPTION\nstruct VoxelMarchDiagnosticInfo {heat: f32,\nvoxel_intersect_coords: vec3i,};\n#endif\nfn hash(i: u32)->u32 {var temp=i ^ (i>>16u);temp*=0x7FEB352Du;temp ^= temp>>15u;temp*=0x846CA68Bu;temp ^= temp>>16u;return temp;}\nfn uintBitsToFloat(x: u32)->f32 {return bitcast<f32>(x);}\nfn uint2float(i: u32)->f32 {return uintBitsToFloat(0x3F800000u | (i>>9u))-1.0;}\nfn uv_to_normal(uv: vec2f)->vec3f {var N: vec3f;var uvRange: vec2f=uv;var theta: f32=uvRange.x*2.0*PI;var phi: f32=uvRange.y*PI;N.x=cos(theta)*sin(phi);N.z=sin(theta)*sin(phi);N.y=cos(phi);return N;}\nfn plasticSequence(rstate: u32)->vec2f {return vec2f(uint2float(rstate*3242174889u),\nuint2float(rstate*2447445414u));}\nfn goldenSequence(rstate: u32)->f32 {return uint2float(rstate*2654435769u);}\nfn distanceSquared(a: vec2f,b: vec2f)->f32 {var diff: vec2f=a-b;return dot(diff,diff);}\nfn genTB(N: vec3f,T: ptr<function,vec3f>,B: ptr<function,vec3f>) {var s: f32=select(1.0,-1.0,N.z<0.0);var a: f32=-1.0/(s+N.z);var b: f32=N.x*N.y*a;*T= vec3f(1.0+s*N.x*N.x*a,s*b,-s*N.x);*B= vec3f(b,s+N.y*N.y*a,-N.y);}\nfn lessThan(x: vec3f,y: vec3f)->vec3<bool> {return x<y;}\n#ifdef VOXEL_MARCH_DIAGNOSTIC_INFO_OPTION\nfn anyHitVoxels(ray_vs: Ray,\nvoxel_march_diagnostic_info: ptr<function,VoxelMarchDiagnosticInfo>)->bool {\n#else\nfn anyHitVoxels(ray_vs: Ray)->bool {\n#endif\nvar stack=array<i32,24>(); \nvar invD: vec3f=ray_vs.dir_rcp;var D: vec3f=ray_vs.dir;var O: vec3f=ray_vs.orig;var negD=vec3i(lessThan(D, vec3f(0,0,0)));var voxel0: i32=negD.x | (negD.y<<1) | (negD.z<<2);var t0: vec3f=-O*invD;var t1=(vec3f(1.0)-O)*invD;var maxLod: i32= i32(highestMipLevel);var stackLevel: i32=0;\n#if VOXEL_MARCH_DIAGNOSTIC_INFO_OPTION\nvar steps: u32=0u;\n#endif\nstack[stackLevel]=maxLod<<24;stackLevel++;while (stackLevel>0) {stackLevel=stackLevel-1;var elem: i32=stack[stackLevel];var Coords: vec4i =\nvec4i(elem & 0xFF,(elem>>8) & 0xFF,(elem>>16) & 0xFF,elem>>24);if (Coords.w==0) {\n#if VOXEL_MARCH_DIAGNOSTIC_INFO_OPTION\n*voxel_march_diagnostic_info.heat= f32(steps)/24.0;\n#endif\nreturn true;}\n#if VOXEL_MARCH_DIAGNOSTIC_INFO_OPTION\n++steps;\n#endif\nvar invRes: f32=exp2(f32(Coords.w-maxLod));var bbmin: vec3f=invRes*vec3f(Coords.xyz+negD);var bbmax: vec3f=invRes*vec3f(Coords.xyz-negD+vec3i(1));var mint: vec3f=mix(t0,t1,bbmin);var maxt: vec3f=mix(t0,t1,bbmax);var midt: vec3f=0.5*(mint+maxt);mint.x=max(0.0,mint.x);midt.x=max(0.0,midt.x);var nodeMask: u32= u32(\nround(textureLoad(voxelGridSampler,Coords.xyz,Coords.w).x*255.0));Coords.w--;var voxelBit: u32=u32(voxel0);Coords=vec4i((Coords.xyz<<vec3u(1))+negD,Coords.w);var packedCoords: i32 =\nCoords.x | (Coords.y<<8) | (Coords.z<<16) | (Coords.w<<24);if (max(mint.x,max(mint.y,mint.z))<min(midt.x,min(midt.y,midt.z)) &&\n((1u<<voxelBit) & nodeMask) != 0) {stack[stackLevel]=packedCoords;stackLevel++;}\nvoxelBit ^= 0x1;packedCoords ^= 0x00001;if (max(midt.x,max(mint.y,mint.z))<min(maxt.x,min(midt.y,midt.z)) &&\n((1u<<voxelBit) & nodeMask) != 0) {stack[stackLevel]=packedCoords;stackLevel++;}\nvoxelBit ^= 0x2;packedCoords ^= 0x00100;if (max(midt.x,max(midt.y,mint.z))<min(maxt.x,min(maxt.y,midt.z)) &&\n((1u<<voxelBit) & nodeMask) != 0) {stack[stackLevel]=packedCoords;stackLevel++;}\nvoxelBit ^= 0x1;packedCoords ^= 0x00001;if (max(mint.x,max(midt.y,mint.z))<min(midt.x,min(maxt.y,midt.z)) &&\n((1u<<voxelBit) & nodeMask) != 0) {stack[stackLevel]=packedCoords;stackLevel++;}\nvoxelBit ^= 0x4;packedCoords ^= 0x10000;if (max(mint.x,max(midt.y,midt.z))<min(midt.x,min(maxt.y,maxt.z)) &&\n((1u<<voxelBit) & nodeMask) != 0) {stack[stackLevel]=packedCoords;stackLevel++;}\nvoxelBit ^= 0x1;packedCoords ^= 0x00001;if (max(midt.x,max(midt.y,midt.z))<min(maxt.x,min(maxt.y,maxt.z)) &&\n((1u<<voxelBit) & nodeMask) != 0) {stack[stackLevel]=packedCoords;stackLevel++;}\nvoxelBit ^= 0x2;packedCoords ^= 0x00100;if (max(midt.x,max(mint.y,midt.z))<min(maxt.x,min(midt.y,maxt.z)) &&\n((1u<<voxelBit) & nodeMask) != 0) {stack[stackLevel]=packedCoords;stackLevel++;}\nvoxelBit ^= 0x1;packedCoords ^= 0x00001;if (max(mint.x,max(mint.y,midt.z))<min(midt.x,min(midt.y,maxt.z)) &&\n((1u<<voxelBit) & nodeMask) != 0) {stack[stackLevel]=packedCoords;stackLevel++;}}\n#if VOXEL_MARCH_DIAGNOSTIC_INFO_OPTION\n*voxel_march_diagnostic_info.heat= f32(steps)/24.0;\n#endif\nreturn false;}\nfn linearizeDepth(depth: f32,near: f32,far: f32)->f32 {return (near*far)/(far-depth*(far-near));}\nfn screenSpaceShadow(csOrigin: vec3f,csDirection: vec3f,csZBufferSize: vec2f,\nnearPlaneZ: f32,farPlaneZ: f32,noise: f32)->f32 {\n#ifdef RIGHT_HANDED\nvar csZDir : f32=-1.0;\n#else \nvar csZDir : f32=1.0;\n#endif\nvar ssSamples: f32=SSSsamples;var ssMaxDist: f32=SSSmaxDistance;var ssStride: f32=SSSstride;var ssThickness: f32=SSSthickness;var rayLength: f32 =\nselect(ssMaxDist,(nearPlaneZ-csOrigin.z)/csDirection.z,\ncsZDir*(csOrigin.z+ssMaxDist*csDirection.z)<csZDir*nearPlaneZ);var csEndPoint: vec3f=csOrigin+rayLength*csDirection;var H0: vec4f=uniforms.projMtx*vec4f(csOrigin,1.0);var H1: vec4f=uniforms.projMtx*vec4f(csEndPoint,1.0);var Z0=vec2f(csOrigin.z ,1.0)/H0.w;var Z1=vec2f(csEndPoint.z,1.0)/H1.w;var P0=csZBufferSize*(0.5*H0.xy*Z0.y+0.5);var P1=csZBufferSize*(0.5*H1.xy*Z1.y+0.5);P1+= vec2f(select(0.0,0.01,distanceSquared(P0,P1)<0.0001));var delta: vec2f=P1-P0;var permute: bool=false;if (abs(delta.x)<abs(delta.y)) {permute=true;P0=P0.yx;P1=P1.yx;delta=delta.yx;}\nvar stepDirection: f32=sign(delta.x);var invdx: f32=stepDirection/delta.x;var dP: vec2f=ssStride* vec2f(stepDirection,invdx*delta.y);var dZ: vec2f=ssStride*invdx*(Z1-Z0);var opacity: f32=0.0;var P: vec2f=P0+noise*dP;var Z: vec2f=Z0+noise*dZ;var end: f32=P1.x*stepDirection;var rayZMax=csZDir*Z.x/Z.y;var sceneDepth=rayZMax;Z+=dZ;for (var stepCount: f32=0.0; \nopacity<1.0 && P.x*stepDirection<end && sceneDepth>0.0 && stepCount<ssSamples;stepCount+=1) { \nvar coords=vec2i(select(P,P.yx,permute));sceneDepth=textureLoad(depthSampler,coords,0).x;sceneDepth=linearizeDepth(sceneDepth,nearPlaneZ,farPlaneZ);sceneDepth=csZDir*sceneDepth;if (sceneDepth<=0.0) {break;}\nvar rayZMin: f32=rayZMax;rayZMax=csZDir*Z.x/Z.y;opacity+=max(opacity,step(rayZMax,sceneDepth+ssThickness)*step(sceneDepth,rayZMin));P+=dP;Z+=dZ;}\nreturn opacity;}\n#if VOXEL_MARCH_DIAGNOSTIC_INFO_OPTION\nfn voxelShadow(wsOrigin: vec3f,wsDirection: vec3f,wsNormal: vec3f,\nDitherNoise: vec2f,\nvoxel_march_diagnostic_info: ptr<function,VoxelMarchDiagnosticInfo>)->f32 {\n#else\nfn voxelShadow(wsOrigin: vec3f,wsDirection: vec3f,wsNormal: vec3f,\nDitherNoise: vec2f)->f32 {\n#endif\nvar vxResolution: f32=f32(textureDimensions(voxelGridSampler,0).x);var T: vec3f;var B: vec3f;genTB(wsDirection,&T,&B);var DitherXY: vec2f=sqrt(DitherNoise.x)* vec2f(cos(2.0*PI*DitherNoise.y),\nsin(2.0*PI*DitherNoise.y));var Dithering : vec3f=(uniforms.voxelBiasParameters.x*wsNormal +\nuniforms.voxelBiasParameters.y*wsDirection +\nDitherXY.x*T+DitherXY.y*B) /\nvxResolution;var O: vec3f=0.5*wsOrigin+0.5+Dithering;var ray_vs=make_ray(O,wsDirection,0.0,10.0);var voxel_aabb: AABB3f;voxel_aabb.m_min=vec3f(0);voxel_aabb.m_max=vec3f(1);var near: f32=0;var far: f32=0;if (!ray_box_intersection(voxel_aabb,ray_vs,&near,&far)) {return 0.0;}\nray_vs.t_min=max(ray_vs.t_min,near);ray_vs.t_max=min(ray_vs.t_max,far);\n#if VOXEL_MARCH_DIAGNOSTIC_INFO_OPTION\nreturn select(0.0f,1.0f,anyHitVoxels(ray_vs,voxel_march_diagnostic_info));\n#else\nreturn select(0.0f,1.0f,anyHitVoxels(ray_vs));\n#endif\n}\n@fragment\nfn main(input: FragmentInputs)->FragmentOutputs {var nbDirs=u32(SHADOWdirs);var frameId=u32(SHADOWframe);var envRot: f32=SHADOWenvRot;var Resolution: vec2f= vec2f(textureDimensions(depthSampler,0));var currentPixel=vec2i(fragmentInputs.vUV*Resolution);var GlobalIndex =\n(frameId*u32(Resolution.y)+u32(currentPixel.y))*u32(Resolution.x) +\nu32(currentPixel.x);var N : vec3f=textureLoad(worldNormalSampler,currentPixel,0).xyz;if (length(N)<0.01) {fragmentOutputs.color=vec4f(1.0,1.0,0.0,1.0);return fragmentOutputs;}\nvar normalizedRotation: f32=envRot/(2.0*PI);var depth : f32=textureLoad(depthSampler,currentPixel,0).x;\n#ifndef IS_NDC_HALF_ZRANGE\ndepth=depth*2.0-1.0;\n#endif\nvar temp : vec2f=(vec2f(currentPixel)+vec2f(0.5))*2.0/Resolution -\nvec2f(1.0);var VP : vec4f=uniforms.invProjMtx*vec4f(temp.x,-temp.y,depth,1.0);VP/=VP.w;N=normalize(N);var noise\n: vec3f =\ntextureLoad(blueNoiseSampler,currentPixel & vec2i(0xFF),0).xyz;noise.z=fract(noise.z+goldenSequence(frameId*nbDirs));\n#ifdef VOXEL_MARCH_DIAGNOSTIC_INFO_OPTION\nvar heat: f32=0.0f;\n#endif\nvar shadowAccum: f32=0.0;var specShadowAccum: f32=0.0;var sampleWeight : f32=0;for (var i: u32=0; i<nbDirs; i++) {var dirId: u32=nbDirs*GlobalIndex+i;var L: vec4f;{var r: vec2f=plasticSequence(frameId*nbDirs+i);r=fract(r+ vec2f(2.0)*abs(noise.xy- vec2f(0.5)));var T: vec2f;T.x=textureSampleLevel(icdfxSampler,icdfxSamplerSampler,vec2f(r.x,0.0),0.0).x;T.y=textureSampleLevel(icdfySampler,icdfySamplerSampler,vec2f(T.x,r.y),0.0).x;T.x-=normalizedRotation;L= vec4f(uv_to_normal(T),0);\n#ifndef RIGHT_HANDED\nL.z*=-1.0;\n#endif\n}\nvar edge_tint_const=-0.001;var cosNL: f32=dot(N,L.xyz);var opacity: f32=select(0.0,1.0,cosNL<edge_tint_const);if (cosNL>edge_tint_const) {var VP2: vec4f=VP;VP2.y*=-1.0;var unormWP : vec4f=uniforms.invViewMtx*VP2;var WP: vec3f=(uniforms.wsNormalizationMtx*unormWP).xyz;var vxNoise: vec2f =\nvec2f(uint2float(hash(dirId*2)),uint2float(hash(dirId*2+1)));\n#ifdef VOXEL_MARCH_DIAGNOSTIC_INFO_OPTION\nVoxelMarchDiagnosticInfo voxel_march_diagnostic_info;opacity=max(opacity,\nuniforms.shadowOpacity.x*voxelShadow(WP,L.xyz,N,vxNoise,\nvoxel_march_diagnostic_info));heat+=voxel_march_diagnostic_info.heat;\n#else\nopacity =\nmax(opacity,uniforms.shadowOpacity.x*voxelShadow(WP,L.xyz,N,vxNoise));\n#endif\nvar VL : vec3f=(uniforms.viewMtx*L).xyz;\n#ifdef RIGHT_HANDED\nvar nearPlaneZ: f32=-2.0*uniforms.projMtx[3][2]/(uniforms.projMtx[2][2]-1.0); \nvar farPlaneZ: f32=-uniforms.projMtx[3][2]/(uniforms.projMtx[2][2]+1.0);\n#else\nvar nearPlaneZ: f32=-2.0*uniforms.projMtx[3][2]/(uniforms.projMtx[2][2]+1.0); \nvar farPlaneZ: f32=-uniforms.projMtx[3][2]/(uniforms.projMtx[2][2]-1.0);\n#endif\nvar ssShadow: f32=uniforms.shadowOpacity.y *\nscreenSpaceShadow(VP2.xyz,VL,Resolution,nearPlaneZ,farPlaneZ,\nabs(2.0*noise.z-1.0));opacity=max(opacity,ssShadow);shadowAccum+=min(1.0-opacity,cosNL);sampleWeight+=cosNL;var VR : vec3f=-(uniforms.viewMtx*vec4f(reflect(-L.xyz,N),0.0)).xyz;specShadowAccum+=max(1.0-(opacity*pow(VR.z,8.0)),0.0);}\nnoise.z=fract(noise.z+GOLD);}\n#ifdef VOXEL_MARCH_DIAGNOSTIC_INFO_OPTION\nfragmentOutputs.color =\nvec4f(shadowAccum/sampleWeight,specShadowAccum/sampleWeight,heat/sampleWeight,1.0);\n#else\nfragmentOutputs.color=vec4f(shadowAccum/sampleWeight,specShadowAccum/sampleWeight,0.0,1.0);\n#endif\n}`;\n// Sideeffect\nShaderStore.ShadersStoreWGSL[name] = shader;\n/** @internal */\nexport const iblShadowVoxelTracingPixelShaderWGSL = { name, shader };\n"],"mappings":"AAAA;AACA,SAASA,WAAW,QAAQ,2BAA2B;AACvD,MAAMC,IAAI,GAAG,kCAAkC;AAC/C,MAAMC,MAAM,GAAG;AACf;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,EAAE;AACF;AACAF,WAAW,CAACG,gBAAgB,CAACF,IAAI,CAAC,GAAGC,MAAM;AAC3C;AACA,OAAO,MAAME,oCAAoC,GAAG;EAAEH,IAAI;EAAEC;AAAO,CAAC","ignoreList":[]},"metadata":{},"sourceType":"module","externalDependencies":[]}
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