// Do not edit.
import { ShaderStore } from "../../Engines/shaderStore.js";
const name = "pbrBlockSubSurface";
const shader = `struct subSurfaceOutParams
{vec3 specularEnvironmentReflectance;
#ifdef SS_REFRACTION
vec3 finalRefraction;vec3 surfaceAlbedo;
#ifdef SS_LINKREFRACTIONTOTRANSPARENCY
float alpha;
#endif
#ifdef REFLECTION
float refractionFactorForIrradiance;
#endif
#endif
#ifdef SS_TRANSLUCENCY
vec3 transmittance;float translucencyIntensity;
#ifdef REFLECTION
vec3 refractionIrradiance;
#endif
#endif
#if DEBUGMODE>0
#ifdef SS_THICKNESSANDMASK_TEXTURE
vec4 thicknessMap;
#endif
#ifdef SS_REFRACTION
vec4 environmentRefraction;vec3 refractionTransmittance;
#endif
#endif
};
#ifdef SUBSURFACE
#ifdef SS_REFRACTION
#define pbr_inline
#define inline
vec4 sampleEnvironmentRefraction(
in float ior
,in float thickness
,in float refractionLOD
,in vec3 normalW
,in vec3 vPositionW
,in vec3 viewDirectionW
,in mat4 view
,in vec4 vRefractionInfos
,in mat4 refractionMatrix
,in vec4 vRefractionMicrosurfaceInfos
,in float alphaG
#ifdef SS_REFRACTIONMAP_3D
,in samplerCube refractionSampler
#ifndef LODBASEDMICROSFURACE
,in samplerCube refractionSamplerLow
,in samplerCube refractionSamplerHigh
#endif
#else
,in sampler2D refractionSampler
#ifndef LODBASEDMICROSFURACE
,in sampler2D refractionSamplerLow
,in sampler2D refractionSamplerHigh
#endif
#endif
#ifdef ANISOTROPIC
,in anisotropicOutParams anisotropicOut
#endif
#ifdef REALTIME_FILTERING
,in vec2 vRefractionFilteringInfo
#endif
#ifdef SS_USE_LOCAL_REFRACTIONMAP_CUBIC
,in vec3 refractionPosition
,in vec3 refractionSize
#endif
) {vec4 environmentRefraction=vec4(0.,0.,0.,0.);
#ifdef ANISOTROPIC
vec3 refractionVector=refract(-viewDirectionW,anisotropicOut.anisotropicNormal,ior);
#else
vec3 refractionVector=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;vec3 refractionCoords=refractionVector;refractionCoords=vec3(refractionMatrix*vec4(refractionCoords,0));
#else
#ifdef SS_USE_THICKNESS_AS_DEPTH
vec3 vRefractionUVW=vec3(refractionMatrix*(view*vec4(vPositionW+refractionVector*thickness,1.0)));
#else
vec3 vRefractionUVW=vec3(refractionMatrix*(view*vec4(vPositionW+refractionVector*vRefractionInfos.z,1.0)));
#endif
vec2 refractionCoords=vRefractionUVW.xy/vRefractionUVW.z;refractionCoords.y=1.0-refractionCoords.y;
#endif
#ifdef LODBASEDMICROSFURACE
refractionLOD=refractionLOD*vRefractionMicrosurfaceInfos.y+vRefractionMicrosurfaceInfos.z;
#ifdef SS_LODINREFRACTIONALPHA
float automaticRefractionLOD=UNPACK_LOD(sampleRefraction(refractionSampler,refractionCoords).a);float requestedRefractionLOD=max(automaticRefractionLOD,refractionLOD);
#else
float requestedRefractionLOD=refractionLOD;
#endif
#if defined(REALTIME_FILTERING) && defined(SS_REFRACTIONMAP_3D)
environmentRefraction=vec4(radiance(alphaG,refractionSampler,refractionCoords,vRefractionFilteringInfo),1.0);
#else
environmentRefraction=sampleRefractionLod(refractionSampler,refractionCoords,requestedRefractionLOD);
#endif
#else
float lodRefractionNormalized=saturate(refractionLOD/log2(vRefractionMicrosurfaceInfos.x));float lodRefractionNormalizedDoubled=lodRefractionNormalized*2.0;vec4 environmentRefractionMid=sampleRefraction(refractionSampler,refractionCoords);if (lodRefractionNormalizedDoubled<1.0){environmentRefraction=mix(
sampleRefraction(refractionSamplerHigh,refractionCoords),
environmentRefractionMid,
lodRefractionNormalizedDoubled
);} else {environmentRefraction=mix(
environmentRefractionMid,
sampleRefraction(refractionSamplerLow,refractionCoords),
lodRefractionNormalizedDoubled-1.0
);}
#endif
#ifdef SS_RGBDREFRACTION
environmentRefraction.rgb=fromRGBD(environmentRefraction);
#endif
#ifdef SS_GAMMAREFRACTION
environmentRefraction.rgb=toLinearSpace(environmentRefraction.rgb);
#endif
return environmentRefraction;}
#endif
#define pbr_inline
#define inline
void subSurfaceBlock(
in vec3 vSubSurfaceIntensity,
in vec2 vThicknessParam,
in vec4 vTintColor,
in vec3 normalW,
in vec3 specularEnvironmentReflectance,
#ifdef SS_THICKNESSANDMASK_TEXTURE
in vec4 thicknessMap,
#endif
#ifdef SS_REFRACTIONINTENSITY_TEXTURE
in vec4 refractionIntensityMap,
#endif
#ifdef SS_TRANSLUCENCYINTENSITY_TEXTURE
in vec4 translucencyIntensityMap,
#endif
#ifdef REFLECTION
#ifdef SS_TRANSLUCENCY
in mat4 reflectionMatrix,
#ifdef USESPHERICALFROMREFLECTIONMAP
#if !defined(NORMAL) || !defined(USESPHERICALINVERTEX)
in vec3 irradianceVector_,
#endif
#if defined(REALTIME_FILTERING)
in samplerCube reflectionSampler,
in vec2 vReflectionFilteringInfo,
#endif
#endif
#ifdef USEIRRADIANCEMAP
#ifdef REFLECTIONMAP_3D
in samplerCube irradianceSampler,
#else
in sampler2D irradianceSampler,
#endif
#endif
#endif
#endif
#if defined(SS_REFRACTION) || defined(SS_TRANSLUCENCY)
in vec3 surfaceAlbedo,
#endif
#ifdef SS_REFRACTION
in vec3 vPositionW,
in vec3 viewDirectionW,
in mat4 view,
in vec4 vRefractionInfos,
in mat4 refractionMatrix,
in vec4 vRefractionMicrosurfaceInfos,
in vec4 vLightingIntensity,
#ifdef SS_LINKREFRACTIONTOTRANSPARENCY
in float alpha,
#endif
#ifdef SS_LODINREFRACTIONALPHA
in float NdotVUnclamped,
#endif
#ifdef SS_LINEARSPECULARREFRACTION
in float roughness,
#endif
in float alphaG,
#ifdef SS_REFRACTIONMAP_3D
in samplerCube refractionSampler,
#ifndef LODBASEDMICROSFURACE
in samplerCube refractionSamplerLow,
in samplerCube refractionSamplerHigh,
#endif
#else
in sampler2D refractionSampler,
#ifndef LODBASEDMICROSFURACE
in sampler2D refractionSamplerLow,
in sampler2D refractionSamplerHigh,
#endif
#endif
#ifdef ANISOTROPIC
in anisotropicOutParams anisotropicOut,
#endif
#ifdef REALTIME_FILTERING
in vec2 vRefractionFilteringInfo,
#endif
#ifdef SS_USE_LOCAL_REFRACTIONMAP_CUBIC
in vec3 refractionPosition,
in vec3 refractionSize,
#endif
#ifdef SS_DISPERSION
in float dispersion,
#endif
#endif
#ifdef SS_TRANSLUCENCY
in vec3 vDiffusionDistance,
#endif
out subSurfaceOutParams outParams
)
{outParams.specularEnvironmentReflectance=specularEnvironmentReflectance;
#ifdef SS_REFRACTION
float refractionIntensity=vSubSurfaceIntensity.x;
#ifdef SS_LINKREFRACTIONTOTRANSPARENCY
refractionIntensity*=(1.0-alpha);outParams.alpha=1.0;
#endif
#endif
#ifdef SS_TRANSLUCENCY
float translucencyIntensity=vSubSurfaceIntensity.y;
#endif
#ifdef SS_THICKNESSANDMASK_TEXTURE
#if defined(SS_USE_GLTF_TEXTURES)
float thickness=thicknessMap.g*vThicknessParam.y+vThicknessParam.x;
#else
float thickness=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)
#if defined(SS_USE_GLTF_TEXTURES)
refractionIntensity*=thicknessMap.r;
#else
refractionIntensity*=thicknessMap.g;
#endif
#endif
#if defined(SS_TRANSLUCENCY) && defined(SS_TRANSLUCENCY_USE_INTENSITY_FROM_THICKNESS)
translucencyIntensity*=thicknessMap.b;
#endif
#else
float thickness=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)
translucencyIntensity*=translucencyIntensityMap.b;
#endif
#ifdef SS_TRANSLUCENCY
thickness=maxEps(thickness);vec3 transmittance=transmittanceBRDF_Burley(vTintColor.rgb,vDiffusionDistance,thickness);transmittance*=translucencyIntensity;outParams.transmittance=transmittance;outParams.translucencyIntensity=translucencyIntensity;
#endif
#ifdef SS_REFRACTION
vec4 environmentRefraction=vec4(0.,0.,0.,0.);
#ifdef SS_HAS_THICKNESS
float ior=vRefractionInfos.y;
#else
float ior=vRefractionMicrosurfaceInfos.w;
#endif
#ifdef SS_LODINREFRACTIONALPHA
float refractionAlphaG=alphaG;refractionAlphaG=mix(alphaG,0.0,clamp(ior*3.0-2.0,0.0,1.0));float refractionLOD=getLodFromAlphaG(vRefractionMicrosurfaceInfos.x,refractionAlphaG,NdotVUnclamped);
#elif defined(SS_LINEARSPECULARREFRACTION)
float refractionRoughness=alphaG;refractionRoughness=mix(alphaG,0.0,clamp(ior*3.0-2.0,0.0,1.0));float refractionLOD=getLinearLodFromRoughness(vRefractionMicrosurfaceInfos.x,refractionRoughness);
#else
float refractionAlphaG=alphaG;refractionAlphaG=mix(alphaG,0.0,clamp(ior*3.0-2.0,0.0,1.0));float refractionLOD=getLodFromAlphaG(vRefractionMicrosurfaceInfos.x,refractionAlphaG);
#endif
float refraction_ior=vRefractionInfos.y;
#ifdef SS_DISPERSION
float realIOR=1.0/refraction_ior;float iorDispersionSpread=0.04*dispersion*(realIOR-1.0);vec3 iors=vec3(1.0/(realIOR-iorDispersionSpread),refraction_ior,1.0/(realIOR+iorDispersionSpread));for (int i=0; i<3; i++) {refraction_ior=iors[i];
#endif
vec4 envSample=sampleEnvironmentRefraction(refraction_ior,thickness,refractionLOD,normalW,vPositionW,viewDirectionW,view,vRefractionInfos,refractionMatrix,vRefractionMicrosurfaceInfos,alphaG
#ifdef SS_REFRACTIONMAP_3D
,refractionSampler
#ifndef LODBASEDMICROSFURACE
,refractionSamplerLow
,refractionSamplerHigh
#endif
#else
,refractionSampler
#ifndef LODBASEDMICROSFURACE
,refractionSamplerLow
,refractionSamplerHigh
#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.rgb*=vRefractionInfos.x;
#endif
#ifdef SS_REFRACTION
vec3 refractionTransmittance=vec3(refractionIntensity);
#ifdef SS_THICKNESSANDMASK_TEXTURE
vec3 volumeAlbedo=computeColorAtDistanceInMedia(vTintColor.rgb,vTintColor.w);refractionTransmittance*=cocaLambert(volumeAlbedo,thickness);
#elif defined(SS_LINKREFRACTIONTOTRANSPARENCY)
float maxChannel=max(max(surfaceAlbedo.r,surfaceAlbedo.g),surfaceAlbedo.b);vec3 volumeAlbedo=saturate(maxChannel*surfaceAlbedo);environmentRefraction.rgb*=volumeAlbedo;
#else
vec3 volumeAlbedo=computeColorAtDistanceInMedia(vTintColor.rgb,vTintColor.w);refractionTransmittance*=cocaLambert(volumeAlbedo,vThicknessParam.y);
#endif
#ifdef SS_ALBEDOFORREFRACTIONTINT
environmentRefraction.rgb*=surfaceAlbedo.rgb;
#endif
outParams.surfaceAlbedo=surfaceAlbedo*(1.-refractionIntensity);
#ifdef REFLECTION
outParams.refractionFactorForIrradiance=(1.-refractionIntensity);
#endif
#ifdef UNUSED_MULTIPLEBOUNCES
vec3 bounceSpecularEnvironmentReflectance=(2.0*specularEnvironmentReflectance)/(1.0+specularEnvironmentReflectance);outParams.specularEnvironmentReflectance=mix(bounceSpecularEnvironmentReflectance,specularEnvironmentReflectance,refractionIntensity);
#endif
refractionTransmittance*=1.0-outParams.specularEnvironmentReflectance;
#if DEBUGMODE>0
outParams.refractionTransmittance=refractionTransmittance;
#endif
outParams.finalRefraction=environmentRefraction.rgb*refractionTransmittance*vLightingIntensity.z;
#if DEBUGMODE>0
outParams.environmentRefraction=environmentRefraction;
#endif
#endif
#if defined(REFLECTION) && defined(SS_TRANSLUCENCY)
#if defined(NORMAL) && defined(USESPHERICALINVERTEX) || !defined(USESPHERICALFROMREFLECTIONMAP)
vec3 irradianceVector=vec3(reflectionMatrix*vec4(normalW,0)).xyz;
#ifdef REFLECTIONMAP_OPPOSITEZ
irradianceVector.z*=-1.0;
#endif
#ifdef INVERTCUBICMAP
irradianceVector.y*=-1.0;
#endif
#else
vec3 irradianceVector=irradianceVector_;
#endif
#if defined(USESPHERICALFROMREFLECTIONMAP)
#if defined(REALTIME_FILTERING)
vec3 refractionIrradiance=irradiance(reflectionSampler,-irradianceVector,vReflectionFilteringInfo);
#else
vec3 refractionIrradiance=computeEnvironmentIrradiance(-irradianceVector);
#endif
#elif defined(USEIRRADIANCEMAP)
#ifdef REFLECTIONMAP_3D
vec3 irradianceCoords=irradianceVector;
#else
vec2 irradianceCoords=irradianceVector.xy;
#ifdef REFLECTIONMAP_PROJECTION
irradianceCoords/=irradianceVector.z;
#endif
irradianceCoords.y=1.0-irradianceCoords.y;
#endif
vec4 refractionIrradiance=sampleReflection(irradianceSampler,-irradianceCoords);
#ifdef RGBDREFLECTION
refractionIrradiance.rgb=fromRGBD(refractionIrradiance);
#endif
#ifdef GAMMAREFLECTION
refractionIrradiance.rgb=toLinearSpace(refractionIrradiance.rgb);
#endif
#else
vec4 refractionIrradiance=vec4(0.);
#endif
refractionIrradiance.rgb*=transmittance;
#ifdef SS_ALBEDOFORTRANSLUCENCYTINT
refractionIrradiance.rgb*=surfaceAlbedo.rgb;
#endif
outParams.refractionIrradiance=refractionIrradiance.rgb;
#endif
}
#endif
`;
// Sideeffect
ShaderStore.IncludesShadersStore[name] = shader;
/** @internal */
export const pbrBlockSubSurface = { name, shader };
//# sourceMappingURL=pbrBlockSubSurface.js.map