@babylonjs/core/ShadersWGSL/ShadersInclude/pbrBlockSubSurface.js

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// Do not edit.
import { ShaderStore } from "../../Engines/shaderStore.js";
const name = "pbrBlockSubSurface";
const shader = `struct subSurfaceOutParams
{specularEnvironmentReflectance: vec3f,
#ifdef SS_REFRACTION
finalRefraction: vec3f,
surfaceAlbedo: vec3f,
#ifdef SS_LINKREFRACTIONTOTRANSPARENCY
alpha: f32,
#endif
refractionOpacity: f32,
#endif
#ifdef SS_TRANSLUCENCY
transmittance: vec3f,
translucencyIntensity: f32,
#ifdef REFLECTION
refractionIrradiance: vec3f,
#endif
#endif
#if DEBUGMODE>0
#ifdef SS_THICKNESSANDMASK_TEXTURE
thicknessMap: vec4f,
#endif
#ifdef SS_REFRACTION
environmentRefraction: vec4f,
refractionTransmittance: vec3f
#endif
#endif
};
#ifdef SUBSURFACE
#ifdef SS_REFRACTION
#define pbr_inline
fn sampleEnvironmentRefraction(
ior: f32
,thickness: f32
,refractionLOD: f32
,normalW: vec3f
,vPositionW: vec3f
,viewDirectionW: vec3f
,view: mat4x4f
,vRefractionInfos: vec4f
,refractionMatrix: mat4x4f
,vRefractionMicrosurfaceInfos: vec4f
,alphaG: f32
#ifdef SS_REFRACTIONMAP_3D
,refractionSampler: texture_cube<f32>
,refractionSamplerSampler: sampler
#ifndef LODBASEDMICROSFURACE
,refractionLowSampler: texture_cube<f32>
,refractionLowSamplerSampler: sampler
,refractionHighSampler: texture_cube<f32>
,refractionHighSamplerSampler: sampler 
#endif
#else
,refractionSampler: texture_2d<f32>
,refractionSamplerSampler: sampler
#ifndef LODBASEDMICROSFURACE
,refractionLowSampler: texture_2d<f32>
,refractionLowSamplerSampler: sampler
,refractionHighSampler: texture_2d<f32>
,refractionHighSamplerSampler: sampler 
#endif
#endif
#ifdef ANISOTROPIC
,anisotropicOut: anisotropicOutParams
#endif
#ifdef REALTIME_FILTERING
,vRefractionFilteringInfo: vec2f
#endif
#ifdef SS_USE_LOCAL_REFRACTIONMAP_CUBIC
,refractionPosition: vec3f
,refractionSize: vec3f
#endif
)->vec4f {var environmentRefraction: vec4f= vec4f(0.,0.,0.,0.);
#ifdef ANISOTROPIC
var refractionVector: vec3f=refract(-viewDirectionW,anisotropicOut.anisotropicNormal,ior);
#else
var refractionVector: vec3f=refract(-viewDirectionW,normalW,ior);
#endif
#ifdef SS_REFRACTIONMAP_OPPOSITEZ
refractionVector.z*=-1.0;
#endif
#ifdef SS_REFRACTIONMAP_3D
#ifdef SS_USE_LOCAL_REFRACTIONMAP_CUBIC
refractionVector=parallaxCorrectNormal(vPositionW,refractionVector,refractionSize,refractionPosition);
#endif
refractionVector.y=refractionVector.y*vRefractionInfos.w;var refractionCoords: vec3f=refractionVector;refractionCoords= (refractionMatrix* vec4f(refractionCoords,0)).xyz;
#else
#ifdef SS_USE_THICKNESS_AS_DEPTH
var vRefractionUVW: vec3f= (refractionMatrix*(view* vec4f(vPositionW+refractionVector*thickness,1.0))).xyz;
#else
var vRefractionUVW: vec3f= (refractionMatrix*(view* vec4f(vPositionW+refractionVector*vRefractionInfos.z,1.0))).xyz;
#endif
var refractionCoords: vec2f=vRefractionUVW.xy/vRefractionUVW.z;refractionCoords.y=1.0-refractionCoords.y;
#endif
#ifdef LODBASEDMICROSFURACE
var lod=refractionLOD*vRefractionMicrosurfaceInfos.y+vRefractionMicrosurfaceInfos.z;
#ifdef SS_LODINREFRACTIONALPHA
var automaticRefractionLOD: f32=UNPACK_LOD(textureSample(refractionSampler,refractionSamplerSampler,refractionCoords).a);var requestedRefractionLOD: f32=max(automaticRefractionLOD,lod);
#else
var requestedRefractionLOD: f32=lod;
#endif
#if defined(REALTIME_FILTERING) && defined(SS_REFRACTIONMAP_3D)
environmentRefraction= vec4f(radiance(alphaG,refractionSampler,refractionSamplerSampler,refractionCoords,vRefractionFilteringInfo),1.0);
#else
environmentRefraction=textureSampleLevel(refractionSampler,refractionSamplerSampler,refractionCoords,requestedRefractionLOD);
#endif
#else
var lodRefractionNormalized: f32=saturate(refractionLOD/log2(vRefractionMicrosurfaceInfos.x));var lodRefractionNormalizedDoubled: f32=lodRefractionNormalized*2.0;var environmentRefractionMid: vec4f=textureSample(refractionSampler,refractionSamplerSampler,refractionCoords);if (lodRefractionNormalizedDoubled<1.0){environmentRefraction=mix(
textureSample(refractionHighSampler,refractionHighSamplerSampler,refractionCoords),
environmentRefractionMid,
lodRefractionNormalizedDoubled
);} else {environmentRefraction=mix(
environmentRefractionMid,
textureSample(refractionLowSampler,refractionLowSamplerSampler,refractionCoords),
lodRefractionNormalizedDoubled-1.0
);}
#endif
var refraction=environmentRefraction.rgb;
#ifdef SS_RGBDREFRACTION
refraction=fromRGBD(environmentRefraction);
#endif
#ifdef SS_GAMMAREFRACTION
refraction=toLinearSpaceVec3(environmentRefraction.rgb);
#endif
return vec4f(refraction,environmentRefraction.a);}
#endif
#define pbr_inline
fn subSurfaceBlock(
vSubSurfaceIntensity: vec3f
,vThicknessParam: vec2f
,vTintColor: vec4f
,normalW: vec3f
,specularEnvironmentReflectance: vec3f
#ifdef SS_THICKNESSANDMASK_TEXTURE
,thicknessMap: vec4f
#endif
#ifdef SS_REFRACTIONINTENSITY_TEXTURE
,refractionIntensityMap: vec4f
#endif
#ifdef SS_TRANSLUCENCYINTENSITY_TEXTURE
,translucencyIntensityMap: vec4f
#endif
#ifdef REFLECTION
#ifdef SS_TRANSLUCENCY
,reflectionMatrix: mat4x4f
#ifdef USESPHERICALFROMREFLECTIONMAP
#if !defined(NORMAL) || !defined(USESPHERICALINVERTEX)
,irradianceVector_: vec3f
#endif
#if defined(REALTIME_FILTERING)
,reflectionSampler: texture_cube<f32>
,reflectionSamplerSampler: sampler
,vReflectionFilteringInfo: vec2f
#ifdef IBL_CDF_FILTERING
,icdfSampler: texture_2d<f32>
,icdfSamplerSampler: sampler
#endif
#endif
#endif
#ifdef USEIRRADIANCEMAP
#ifdef REFLECTIONMAP_3D
,irradianceSampler: texture_cube<f32>
,irradianceSamplerSampler: sampler
#else
,irradianceSampler: texture_2d<f32>
,irradianceSamplerSampler: sampler
#endif
#endif
#endif
#endif
#if defined(SS_REFRACTION) || defined(SS_TRANSLUCENCY)
,surfaceAlbedo: vec3f
#endif
#ifdef SS_REFRACTION
,vPositionW: vec3f
,viewDirectionW: vec3f
,view: mat4x4f
,vRefractionInfos: vec4f
,refractionMatrix: mat4x4f
,vRefractionMicrosurfaceInfos: vec4f
,vLightingIntensity: vec4f
#ifdef SS_LINKREFRACTIONTOTRANSPARENCY
,alpha: f32
#endif
#ifdef SS_LODINREFRACTIONALPHA
,NdotVUnclamped: f32
#endif
#ifdef SS_LINEARSPECULARREFRACTION
,roughness: f32
#endif
,alphaG: f32
#ifdef SS_REFRACTIONMAP_3D
,refractionSampler: texture_cube<f32>
,refractionSamplerSampler: sampler
#ifndef LODBASEDMICROSFURACE
,refractionLowSampler: texture_cube<f32>
,refractionLowSamplerSampler: sampler
,refractionHighSampler: texture_cube<f32>
,refractionHighSamplerSampler: sampler 
#endif
#else
,refractionSampler: texture_2d<f32>
,refractionSamplerSampler: sampler
#ifndef LODBASEDMICROSFURACE
,refractionLowSampler: texture_2d<f32>
,refractionLowSamplerSampler: sampler
,refractionHighSampler: texture_2d<f32>
,refractionHighSamplerSampler: sampler 
#endif
#endif
#ifdef ANISOTROPIC
,anisotropicOut: anisotropicOutParams
#endif
#ifdef REALTIME_FILTERING
,vRefractionFilteringInfo: vec2f
#endif
#ifdef SS_USE_LOCAL_REFRACTIONMAP_CUBIC
,refractionPosition: vec3f
,refractionSize: vec3f
#endif
#ifdef SS_DISPERSION
,dispersion: f32
#endif
#endif
#ifdef SS_TRANSLUCENCY
,vDiffusionDistance: vec3f
,vTranslucencyColor: vec4f
#ifdef SS_TRANSLUCENCYCOLOR_TEXTURE
,translucencyColorMap: vec4f
#endif
#endif
)->subSurfaceOutParams
{var outParams: subSurfaceOutParams;outParams.specularEnvironmentReflectance=specularEnvironmentReflectance;
#ifdef SS_REFRACTION
var refractionIntensity: f32=vSubSurfaceIntensity.x;
#ifdef SS_LINKREFRACTIONTOTRANSPARENCY
refractionIntensity*=(1.0-alpha);outParams.alpha=1.0;
#endif
#endif
#ifdef SS_TRANSLUCENCY
var translucencyIntensity: f32=vSubSurfaceIntensity.y;
#endif
#ifdef SS_THICKNESSANDMASK_TEXTURE
#ifdef SS_USE_GLTF_TEXTURES
var thickness: f32=thicknessMap.g*vThicknessParam.y+vThicknessParam.x;
#else
var thickness: f32=thicknessMap.r*vThicknessParam.y+vThicknessParam.x;
#endif
#if DEBUGMODE>0
outParams.thicknessMap=thicknessMap;
#endif
#if defined(SS_REFRACTION) && defined(SS_REFRACTION_USE_INTENSITY_FROM_THICKNESS)
#ifdef SS_USE_GLTF_TEXTURES
refractionIntensity*=thicknessMap.r;
#else
refractionIntensity*=thicknessMap.g;
#endif
#endif
#if defined(SS_TRANSLUCENCY) && defined(SS_TRANSLUCENCY_USE_INTENSITY_FROM_THICKNESS)
#ifdef SS_USE_GLTF_TEXTURES
translucencyIntensity*=thicknessMap.a;
#else
translucencyIntensity*=thicknessMap.b;
#endif
#endif
#else
var thickness: f32=vThicknessParam.y;
#endif
#if defined(SS_REFRACTION) && defined(SS_REFRACTIONINTENSITY_TEXTURE)
#ifdef SS_USE_GLTF_TEXTURES
refractionIntensity*=refractionIntensityMap.r;
#else
refractionIntensity*=refractionIntensityMap.g;
#endif
#endif
#if defined(SS_TRANSLUCENCY) && defined(SS_TRANSLUCENCYINTENSITY_TEXTURE)
#ifdef SS_USE_GLTF_TEXTURES
translucencyIntensity*=translucencyIntensityMap.a;
#else
translucencyIntensity*=translucencyIntensityMap.b;
#endif
#endif
#ifdef SS_TRANSLUCENCY
thickness=maxEps(thickness);var translucencyColor: vec4f=vTranslucencyColor;
#ifdef SS_TRANSLUCENCYCOLOR_TEXTURE
translucencyColor*=translucencyColorMap;
#endif
var transmittance: vec3f=transmittanceBRDF_Burley(translucencyColor.rgb,vDiffusionDistance,thickness);transmittance*=translucencyIntensity;outParams.transmittance=transmittance;outParams.translucencyIntensity=translucencyIntensity;
#endif
#ifdef SS_REFRACTION
var environmentRefraction: vec4f= vec4f(0.,0.,0.,0.);
#ifdef SS_HAS_THICKNESS
var ior: f32=vRefractionInfos.y;
#else
var ior: f32=vRefractionMicrosurfaceInfos.w;
#endif
#ifdef SS_LODINREFRACTIONALPHA
var refractionAlphaG: f32=alphaG;refractionAlphaG=mix(alphaG,0.0,clamp(ior*3.0-2.0,0.0,1.0));var refractionLOD: f32=getLodFromAlphaGNdotV(vRefractionMicrosurfaceInfos.x,refractionAlphaG,NdotVUnclamped);
#elif defined(SS_LINEARSPECULARREFRACTION)
var refractionRoughness: f32=alphaG;refractionRoughness=mix(alphaG,0.0,clamp(ior*3.0-2.0,0.0,1.0));var refractionLOD: f32=getLinearLodFromRoughness(vRefractionMicrosurfaceInfos.x,refractionRoughness);
#else
var refractionAlphaG: f32=alphaG;refractionAlphaG=mix(alphaG,0.0,clamp(ior*3.0-2.0,0.0,1.0));var refractionLOD: f32=getLodFromAlphaG(vRefractionMicrosurfaceInfos.x,refractionAlphaG);
#endif
var refraction_ior: f32=vRefractionInfos.y;
#ifdef SS_DISPERSION
var realIOR: f32=1.0/refraction_ior;var iorDispersionSpread: f32=0.04*dispersion*(realIOR-1.0);var iors: vec3f= vec3f(1.0/(realIOR-iorDispersionSpread),refraction_ior,1.0/(realIOR+iorDispersionSpread));for (var i: i32=0; i<3; i++) {refraction_ior=iors[i];
#endif
var envSample: vec4f=sampleEnvironmentRefraction(refraction_ior,thickness,refractionLOD,normalW,vPositionW,viewDirectionW,view,vRefractionInfos,refractionMatrix,vRefractionMicrosurfaceInfos,alphaG
#ifdef SS_REFRACTIONMAP_3D
,refractionSampler
,refractionSamplerSampler
#ifndef LODBASEDMICROSFURACE
,refractionLowSampler
,refractionLowSamplerSampler
,refractionHighSampler
,refractionHighSamplerSampler
#endif
#else
,refractionSampler
,refractionSamplerSampler
#ifndef LODBASEDMICROSFURACE
,refractionLowSampler
,refractionLowSamplerSampler
,refractionHighSampler
,refractionHighSamplerSampler
#endif
#endif
#ifdef ANISOTROPIC
,anisotropicOut
#endif
#ifdef REALTIME_FILTERING
,vRefractionFilteringInfo
#endif
#ifdef SS_USE_LOCAL_REFRACTIONMAP_CUBIC
,refractionPosition
,refractionSize
#endif
);
#ifdef SS_DISPERSION
environmentRefraction[i]=envSample[i];}
#else
environmentRefraction=envSample;
#endif
environmentRefraction=vec4f(environmentRefraction.rgb*vRefractionInfos.x,environmentRefraction.a);
#endif
#ifdef SS_REFRACTION
var refractionTransmittance: vec3f= vec3f(refractionIntensity);
#ifdef SS_THICKNESSANDMASK_TEXTURE
var volumeAlbedo: vec3f=computeColorAtDistanceInMedia(vTintColor.rgb,vTintColor.w);refractionTransmittance*=cocaLambertVec3(volumeAlbedo,thickness);
#elif defined(SS_LINKREFRACTIONTOTRANSPARENCY)
var maxChannel: f32=max(max(surfaceAlbedo.r,surfaceAlbedo.g),surfaceAlbedo.b);var volumeAlbedo: vec3f=saturateVec3(maxChannel*surfaceAlbedo);environmentRefraction=vec4f(environmentRefraction.rgb*volumeAlbedo,environmentRefraction.a);
#else
var volumeAlbedo: vec3f=computeColorAtDistanceInMedia(vTintColor.rgb,vTintColor.w);refractionTransmittance*=cocaLambertVec3(volumeAlbedo,vThicknessParam.y);
#endif
#ifdef SS_ALBEDOFORREFRACTIONTINT
environmentRefraction=vec4f(environmentRefraction.rgb*surfaceAlbedo.rgb,environmentRefraction.a);
#endif
outParams.surfaceAlbedo=surfaceAlbedo;outParams.refractionOpacity=1.-refractionIntensity;
#ifdef LEGACY_SPECULAR_ENERGY_CONSERVATION
outParams.surfaceAlbedo*=outParams.refractionOpacity;
#endif
#ifdef UNUSED_MULTIPLEBOUNCES
var bounceSpecularEnvironmentReflectance: vec3f=(2.0*specularEnvironmentReflectance)/(1.0+specularEnvironmentReflectance);outParams.specularEnvironmentReflectance=mix(bounceSpecularEnvironmentReflectance,specularEnvironmentReflectance,refractionIntensity);
#endif
#if DEBUGMODE>0
outParams.refractionTransmittance=refractionTransmittance;
#endif
outParams.finalRefraction=environmentRefraction.rgb*refractionTransmittance*vLightingIntensity.z;outParams.finalRefraction*=vec3f(1.0)-specularEnvironmentReflectance;
#if DEBUGMODE>0
outParams.environmentRefraction=environmentRefraction;
#endif
#endif
#if defined(REFLECTION) && defined(SS_TRANSLUCENCY)
#if defined(NORMAL) && defined(USESPHERICALINVERTEX) || !defined(USESPHERICALFROMREFLECTIONMAP)
var irradianceVector: vec3f= (reflectionMatrix* vec4f(normalW,0)).xyz;
#ifdef REFLECTIONMAP_OPPOSITEZ
irradianceVector.z*=-1.0;
#endif
#ifdef INVERTCUBICMAP
irradianceVector.y*=-1.0;
#endif
#else
var irradianceVector: vec3f=irradianceVector_;
#endif
#if defined(USESPHERICALFROMREFLECTIONMAP)
#if defined(REALTIME_FILTERING)
var refractionIrradiance: vec3f=irradiance(reflectionSampler,reflectionSamplerSampler,-irradianceVector,vReflectionFilteringInfo,0.0,surfaceAlbedo,irradianceVector
#ifdef IBL_CDF_FILTERING
,icdfSampler
,icdfSamplerSampler
#endif
);
#else
var refractionIrradiance: vec3f=computeEnvironmentIrradiance(-irradianceVector);
#endif
#elif defined(USEIRRADIANCEMAP)
#ifdef REFLECTIONMAP_3D
var irradianceCoords: vec3f=irradianceVector;
#else
var irradianceCoords: vec2f=irradianceVector.xy;
#ifdef REFLECTIONMAP_PROJECTION
irradianceCoords/=irradianceVector.z;
#endif
irradianceCoords.y=1.0-irradianceCoords.y;
#endif
var temp: vec4f=textureSample(irradianceSampler,irradianceSamplerSampler,-irradianceCoords);var refractionIrradiance=temp.rgb;
#ifdef RGBDREFLECTION
refractionIrradiance=fromRGBD(temp).rgb;
#endif
#ifdef GAMMAREFLECTION
refractionIrradiance=toLinearSpaceVec3(refractionIrradiance);
#endif
#else
var refractionIrradiance: vec3f= vec3f(0.);
#endif
refractionIrradiance*=transmittance;
#ifdef SS_ALBEDOFORTRANSLUCENCYTINT
refractionIrradiance*=surfaceAlbedo.rgb;
#endif
outParams.refractionIrradiance=refractionIrradiance;
#endif
return outParams;}
#endif
`;
// Sideeffect
if (!ShaderStore.IncludesShadersStoreWGSL[name]) {
    ShaderStore.IncludesShadersStoreWGSL[name] = shader;
}
/** @internal */
export const pbrBlockSubSurfaceWGSL = { name, shader };
//# sourceMappingURL=pbrBlockSubSurface.js.map