@babylonjs/core
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158 lines • 10.6 kB
JavaScript
// Do not edit.
import { ShaderStore } from "../../Engines/shaderStore.js";
const name = "openpbrDirectLighting";
const shader = `
{vec3 slab_diffuse=vec3(0.,0.,0.);vec3 slab_translucent=vec3(0.,0.,0.);vec3 slab_glossy=vec3(0.,0.,0.);float specularFresnel=0.0;vec3 specularColoredFresnel=vec3(0.,0.,0.);vec3 slab_metal=vec3(0.,0.,0.);vec3 slab_coat=vec3(0.,0.,0.);float coatFresnel=0.0;vec3 slab_fuzz=vec3(0.,0.,0.);float fuzzFresnel=0.0;
slab_diffuse=computeHemisphericDiffuseLighting(preInfo{X},lightColor{X}.rgb,light{X}.vLightGround);
slab_diffuse=computeAreaDiffuseLighting(preInfo{X},lightColor{X}.rgb);
slab_diffuse=computeDiffuseLighting(preInfo{X},lightColor{X}.rgb);
slab_diffuse*=computeProjectionTextureDiffuseLighting(projectionLightTexture{X},textureProjectionMatrix{X},vPositionW);
float fuzzNdotH=max(dot(fuzzNormalW,preInfo{X}.H),0.0);vec3 fuzzBrdf=getFuzzBRDFLookup(fuzzNdotH,sqrt(fuzz_roughness));
float thin_film_desaturation_scale=(thin_film_ior-1.0)*sqrt(thin_film_thickness*0.001);
slab_glossy=computeAreaSpecularLighting(preInfo{X},light{X}.vLightSpecular.rgb,baseConductorReflectance.F0,baseConductorReflectance.F90);
{
slab_glossy=computeAnisotropicSpecularLighting(preInfo{X},viewDirectionW,normalW,
baseGeoInfo.anisotropicTangent,baseGeoInfo.anisotropicBitangent,baseGeoInfo.anisotropy,
0.0,lightColor{X}.rgb);
slab_glossy=computeSpecularLighting(preInfo{X},normalW,vec3(1.0),vec3(1.0),specular_roughness,lightColor{X}.rgb);
specularFresnel=fresnelSchlickGGX(preInfo{X}.VdotH,baseDielectricReflectance.F0,baseDielectricReflectance.F90);specularColoredFresnel=specularFresnel*specular_color;
vec3 thinFilmDielectricFresnel=evalIridescence(thin_film_outside_ior,thin_film_ior,preInfo{X}.VdotH,thin_film_thickness,baseDielectricReflectance.coloredF0);thinFilmDielectricFresnel=mix(thinFilmDielectricFresnel,vec3(dot(thinFilmDielectricFresnel,vec3(0.3333))),thin_film_desaturation_scale);specularColoredFresnel=mix(specularColoredFresnel,thinFilmDielectricFresnel*specular_color,thin_film_weight*thin_film_ior_scale);
}
vec3 forwardScatteredLight=vec3(0.0);
{preLightingInfo preInfoTrans=preInfo{X};
preInfoTrans.roughness=sqrt(sqrt(max(refractionAlphaG,0.05)));
preInfoTrans.roughness=transmission_roughness;
if (preInfoTrans.NdotLUnclamped<=0.0) {specularFresnel=0.0;specularColoredFresnel=specularFresnel*specular_color;}
vec3 refractNormalW=viewDirectionW;
vec3 refractNormalW=normalW;
preInfoTrans.NdotL=0.5*max(dot(-refractNormalW,preInfoTrans.L),0.0)+0.5;
float diff=min(dispersion_iors[2]-dispersion_iors[0],max(dispersion_iors[0]-1.0,1.0));dispersion_iors[2]+=diff;dispersion_iors[0]-=diff;for (int i=0; i<3; i++) {float eta=1.0/dispersion_iors[i];
float eta=1.0;
float eta=1.0/specular_ior;
preInfoTrans.H=preInfoTrans.L+min(eta,0.95)*viewDirectionW;float len2=dot(preInfoTrans.H,preInfoTrans.H);if (len2<1e-6) {preInfoTrans.H=preInfoTrans.L;} else {preInfoTrans.H=preInfoTrans.H*inversesqrt(len2);}
preInfoTrans.H=-preInfoTrans.H;
preInfoTrans.VdotH=dot(viewDirectionW,preInfoTrans.H);
forwardScatteredLight[i]+=
forwardScatteredLight+=
computeAnisotropicSpecularLighting(preInfoTrans,viewDirectionW,refractNormalW,
baseGeoInfo.anisotropicTangent,baseGeoInfo.anisotropicBitangent,baseGeoInfo.anisotropy,
roughness_alpha_modified_for_scatter,lightColor{X}.rgb
computeSpecularLighting(preInfoTrans,-refractNormalW,vec3(1.0),vec3(1.0),roughness_alpha_modified_for_scatter,lightColor{X}.rgb
)[i];}
);
forwardScatteredLight=mix(forwardScatteredLight,0.25*preInfoTrans.attenuation*lightColor{X}.rgb,clamp(1.0-pow(baseGeoInfo.NdotV,roughness_alpha_modified_for_scatter),0.0,1.0));
forwardScatteredLight=max(slab_translucent_background.rgb,mix(slab_translucent_background.rgb,forwardScatteredLight,roughness_alpha_modified_for_scatter));
vec3 diffused_forward_scattered_light=scattered_light_from_irradiance_texture;
preInfoTrans.roughness=1.0;vec3 diffused_forward_scattered_light=computeSpecularLighting(preInfoTrans,normalW,vec3(1.0),vec3(1.0),1.0,lightColor{X}.rgb)*volume_absorption;
vec3 forward_scattered_light=forwardScatteredLight*transmission_tint*volumeParams.multi_scatter_color*volumeParams.multi_scatter_color;vec3 back_scattered_light=slab_diffuse*volumeParams.multi_scatter_color;slab_translucent=mix(back_scattered_light,forward_scattered_light,0.5+0.5*volumeParams.anisotropy);
vec3 back_scattered_normal=normalize(normalW+viewDirectionW);preInfoTrans.NdotL=max(dot(back_scattered_normal,preInfoTrans.L),0.0);preInfoTrans.NdotV=dot(back_scattered_normal,viewDirectionW);preInfoTrans.H=normalize(viewDirectionW+preInfoTrans.L);preInfoTrans.VdotH=clamp(dot(viewDirectionW,preInfoTrans.H),0.0,1.0);preInfoTrans.roughness=0.2;vec3 back_scattered_light=computeSpecularLighting(preInfoTrans,viewDirectionW,vec3(1.0),vec3(0.08),0.0,lightColor{X}.rgb);vec3 forward_scattered_light=(forwardScatteredLight*volume_absorption);vec3 iso_scattered_light=slab_diffuse;vec3 back_scattering=mix(forward_scattered_light,forward_scattered_light+back_scattered_light*backscatter_color,iso_scatter_density);vec3 iso_scattering=mix(forward_scattered_light,(diffused_forward_scattered_light+iso_scattered_light)*volumeParams.multi_scatter_color,iso_scatter_density);slab_translucent=mix(back_scattering,iso_scattering,back_to_iso_scattering_blend);slab_translucent=mix(slab_translucent,forward_scattered_light,iso_to_forward_scattering_blend)*transmission_tint;
slab_translucent=forwardScatteredLight*transmission_tint*volume_absorption;
}
slab_metal=computeAreaSpecularLighting(preInfo{X},light{X}.vLightSpecular.rgb,baseConductorReflectance.F0,baseConductorReflectance.F90);
{
vec3 coloredFresnel=getF82Specular(preInfo{X}.VdotH,baseConductorReflectance.coloredF0,baseConductorReflectance.coloredF90,specular_roughness);
vec3 coloredFresnel=fresnelSchlickGGX(preInfo{X}.VdotH,baseConductorReflectance.coloredF0,baseConductorReflectance.coloredF90);
vec3 thinFilmConductorFresnel=evalIridescence(thin_film_outside_ior,thin_film_ior,preInfo{X}.VdotH,thin_film_thickness,baseConductorReflectance.coloredF0);thinFilmConductorFresnel=mix(thinFilmConductorFresnel,vec3(dot(thinFilmConductorFresnel,vec3(0.3333))),thin_film_desaturation_scale);coloredFresnel=mix(coloredFresnel,specular_weight*thin_film_ior_scale*thinFilmConductorFresnel,thin_film_weight);
slab_metal=computeAnisotropicSpecularLighting(preInfo{X},viewDirectionW,normalW,baseGeoInfo.anisotropicTangent,baseGeoInfo.anisotropicBitangent,baseGeoInfo.anisotropy,0.0,lightColor{X}.rgb);
slab_metal=computeSpecularLighting(preInfo{X},normalW,vec3(1.0),coloredFresnel,specular_roughness,lightColor{X}.rgb);
}
slab_coat=computeAreaSpecularLighting(preInfoCoat{X},light{X}.vLightSpecular.rgb,coatReflectance.F0,coatReflectance.F90);
{
slab_coat=computeAnisotropicSpecularLighting(preInfoCoat{X},viewDirectionW,coatNormalW,
coatGeoInfo.anisotropicTangent,coatGeoInfo.anisotropicBitangent,coatGeoInfo.anisotropy,
0.0,lightColor{X}.rgb);
slab_coat=computeSpecularLighting(preInfoCoat{X},coatNormalW,vec3(coatReflectance.F0),vec3(1.0),coat_roughness,lightColor{X}.rgb);
float NdotH=max(dot(coatNormalW,preInfoCoat{X}.H),0.0);coatFresnel=fresnelSchlickGGX(NdotH,coatReflectance.F0,coatReflectance.F90);}
vec3 coatAbsorption=vec3(1.0);if (coat_weight>0.0) {float cosTheta_view=max(preInfoCoat{X}.NdotV,0.001);float cosTheta_light=max(preInfoCoat{X}.NdotL,0.001);float fresnel_view=coatReflectance.F0+(1.0-coatReflectance.F0)*pow(1.0-cosTheta_view,5.0);float fresnel_light=coatReflectance.F0+(1.0-coatReflectance.F0)*pow(1.0-cosTheta_light,5.0);float averageReflectance=(fresnel_view+fresnel_light)*0.5;float darkened_transmission=(1.0-averageReflectance)/(1.0+averageReflectance);darkened_transmission=mix(1.0,darkened_transmission,coat_darkening);float sin2=1.0-cosTheta_view*cosTheta_view;sin2=sin2/(coat_ior*coat_ior);float cos_t=sqrt(1.0-sin2);float coatPathLength=1.0/cos_t;vec3 colored_transmission=pow(coat_color,vec3(coatPathLength));coatAbsorption=mix(vec3(1.0),colored_transmission*darkened_transmission,coat_weight);}
fuzzFresnel=fuzzBrdf.z;vec3 fuzzNormalW=mix(normalW,coatNormalW,coat_weight);float fuzzNdotV=max(dot(fuzzNormalW,viewDirectionW.xyz),0.0);float fuzzNdotL=max(dot(fuzzNormalW,preInfo{X}.L),0.0);slab_fuzz=lightColor{X}.rgb*preInfo{X}.attenuation*evalFuzz(preInfo{X}.L,fuzzNdotL,fuzzNdotV,fuzzTangent,fuzzBitangent,fuzzBrdf);
vec3 fuzz_color=vec3(0.0);
total_direct_diffuse+=slab_diffuse;
vec3 material_dielectric_base=mix(slab_diffuse*base_color.rgb,slab_translucent,surface_translucency_weight);vec3 material_dielectric_gloss=material_dielectric_base*(1.0-specularFresnel)+slab_glossy*specularColoredFresnel;vec3 material_base_substrate=mix(material_dielectric_gloss,slab_metal,base_metalness);vec3 material_coated_base=layer(material_base_substrate,slab_coat,coatFresnel,coatAbsorption,vec3(1.0));material_surface_direct+=layer(material_coated_base,slab_fuzz,fuzzFresnel*fuzz_weight,vec3(1.0),fuzz_color);}
`;
// Sideeffect
if (!ShaderStore.IncludesShadersStore[name]) {
ShaderStore.IncludesShadersStore[name] = shader;
}
/** @internal */
export const openpbrDirectLighting = { name, shader };
//# sourceMappingURL=openpbrDirectLighting.js.map