@babylonjs/core/Shaders/ShadersInclude/lightsFragmentFunctions.js

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// Do not edit.
import { ShaderStore } from "../../Engines/shaderStore.js";
import "./ltcHelperFunctions.js";
const name = "lightsFragmentFunctions";
const shader = `struct lightingInfo
{vec3 diffuse;
#ifdef SPECULARTERM
vec3 specular;
#endif
#ifdef NDOTL
float ndl;
#endif
};lightingInfo computeLighting(vec3 viewDirectionW,vec3 vNormal,vec4 lightData,vec3 diffuseColor,vec3 specularColor,float range,float glossiness) {lightingInfo result;vec3 lightVectorW;float attenuation=1.0;if (lightData.w==0.)
{vec3 direction=lightData.xyz-vPositionW;attenuation=max(0.,1.0-length(direction)/range);lightVectorW=normalize(direction);}
else
{lightVectorW=normalize(-lightData.xyz);}
float ndl=max(0.,dot(vNormal,lightVectorW));
#ifdef NDOTL
result.ndl=ndl;
#endif
result.diffuse=ndl*diffuseColor*attenuation;
#ifdef SPECULARTERM
vec3 angleW=normalize(viewDirectionW+lightVectorW);float specComp=max(0.,dot(vNormal,angleW));specComp=pow(specComp,max(1.,glossiness));result.specular=specComp*specularColor*attenuation;
#endif
return result;}
float getAttenuation(float cosAngle,float exponent) {return max(0.,pow(cosAngle,exponent));}
float getIESAttenuation(float cosAngle,sampler2D iesLightSampler) {float angle=acos(cosAngle)/PI;return texture2D(iesLightSampler,vec2(angle,0.)).r;}
lightingInfo basicSpotLighting(vec3 viewDirectionW,vec3 lightVectorW,vec3 vNormal,float attenuation,vec3 diffuseColor,vec3 specularColor,float glossiness) {lightingInfo result; 
float ndl=max(0.,dot(vNormal,lightVectorW));
#ifdef NDOTL
result.ndl=ndl;
#endif
result.diffuse=ndl*diffuseColor*attenuation;
#ifdef SPECULARTERM
vec3 angleW=normalize(viewDirectionW+lightVectorW);float specComp=max(0.,dot(vNormal,angleW));specComp=pow(specComp,max(1.,glossiness));result.specular=specComp*specularColor*attenuation;
#endif
return result;}
lightingInfo computeIESSpotLighting(vec3 viewDirectionW,vec3 vNormal,vec4 lightData,vec4 lightDirection,vec3 diffuseColor,vec3 specularColor,float range,float glossiness,sampler2D iesLightSampler) { 
vec3 direction=lightData.xyz-vPositionW;vec3 lightVectorW=normalize(direction);float attenuation=max(0.,1.0-length(direction)/range);float dotProduct=dot(lightDirection.xyz,-lightVectorW);float cosAngle=max(0.,dotProduct);if (cosAngle>=lightDirection.w)
{ 
attenuation*=getIESAttenuation(dotProduct,iesLightSampler);return basicSpotLighting(viewDirectionW,lightVectorW,vNormal,attenuation,diffuseColor,specularColor,glossiness);}
lightingInfo result;result.diffuse=vec3(0.);
#ifdef SPECULARTERM
result.specular=vec3(0.);
#endif
#ifdef NDOTL
result.ndl=0.;
#endif
return result;}
lightingInfo computeSpotLighting(vec3 viewDirectionW,vec3 vNormal,vec4 lightData,vec4 lightDirection,vec3 diffuseColor,vec3 specularColor,float range,float glossiness) {vec3 direction=lightData.xyz-vPositionW;vec3 lightVectorW=normalize(direction);float attenuation=max(0.,1.0-length(direction)/range);float cosAngle=max(0.,dot(lightDirection.xyz,-lightVectorW));if (cosAngle>=lightDirection.w)
{ 
attenuation*=getAttenuation(cosAngle,lightData.w);return basicSpotLighting(viewDirectionW,lightVectorW,vNormal,attenuation,diffuseColor,specularColor,glossiness);}
lightingInfo result;result.diffuse=vec3(0.);
#ifdef SPECULARTERM
result.specular=vec3(0.);
#endif
#ifdef NDOTL
result.ndl=0.;
#endif
return result;}
lightingInfo computeHemisphericLighting(vec3 viewDirectionW,vec3 vNormal,vec4 lightData,vec3 diffuseColor,vec3 specularColor,vec3 groundColor,float glossiness) {lightingInfo result;float ndl=dot(vNormal,lightData.xyz)*0.5+0.5;
#ifdef NDOTL
result.ndl=ndl;
#endif
result.diffuse=mix(groundColor,diffuseColor,ndl);
#ifdef SPECULARTERM
vec3 angleW=normalize(viewDirectionW+lightData.xyz);float specComp=max(0.,dot(vNormal,angleW));specComp=pow(specComp,max(1.,glossiness));result.specular=specComp*specularColor;
#endif
return result;}
#define inline
vec3 computeProjectionTextureDiffuseLighting(sampler2D projectionLightSampler,mat4 textureProjectionMatrix,vec3 posW){vec4 strq=textureProjectionMatrix*vec4(posW,1.0);strq/=strq.w;vec3 textureColor=texture2D(projectionLightSampler,strq.xy).rgb;return textureColor;}
#if defined(AREALIGHTUSED) && defined(AREALIGHTSUPPORTED)
#include<ltcHelperFunctions>
uniform sampler2D areaLightsLTC1Sampler;uniform sampler2D areaLightsLTC2Sampler;
#define inline
lightingInfo computeAreaLighting(sampler2D ltc1,sampler2D ltc2,vec3 viewDirectionW,vec3 vNormal,vec3 vPosition,vec3 lightPosition,vec3 halfWidth,vec3 halfHeight,vec3 diffuseColor,vec3 specularColor,float roughness) 
{lightingInfo result;areaLightData data=computeAreaLightSpecularDiffuseFresnel(ltc1,ltc2,viewDirectionW,vNormal,vPosition,lightPosition,halfWidth,halfHeight,roughness);
#ifdef SPECULARTERM
vec3 fresnel=( specularColor*data.Fresnel.x+( vec3( 1.0 )-specularColor )*data.Fresnel.y );result.specular+=specularColor*fresnel*data.Specular;
#endif
result.diffuse+=diffuseColor*data.Diffuse;return result;}
#endif
`;
// Sideeffect
if (!ShaderStore.IncludesShadersStore[name]) {
    ShaderStore.IncludesShadersStore[name] = shader;
}
/** @internal */
export const lightsFragmentFunctions = { name, shader };
//# sourceMappingURL=lightsFragmentFunctions.js.map