export default /* glsl */`
uniform vec3 diffuse;
uniform vec3 emissive;
uniform float opacity;
varying vec3 vLightFront;
varying vec3 vIndirectFront;
#ifdef DOUBLE_SIDED
varying vec3 vLightBack;
varying vec3 vIndirectBack;
#endif
#include
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void main() {
#include
vec4 diffuseColor = vec4( diffuse, opacity );
ReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );
vec3 totalEmissiveRadiance = emissive;
#include
#include
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#include
// accumulation
#ifdef DOUBLE_SIDED
reflectedLight.indirectDiffuse += ( gl_FrontFacing ) ? vIndirectFront : vIndirectBack;
#else
reflectedLight.indirectDiffuse += vIndirectFront;
#endif
#include
reflectedLight.indirectDiffuse *= BRDF_Diffuse_Lambert( diffuseColor.rgb );
#ifdef DOUBLE_SIDED
reflectedLight.directDiffuse = ( gl_FrontFacing ) ? vLightFront : vLightBack;
#else
reflectedLight.directDiffuse = vLightFront;
#endif
reflectedLight.directDiffuse *= BRDF_Diffuse_Lambert( diffuseColor.rgb ) * getShadowMask();
// modulation
#include
vec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + totalEmissiveRadiance;
#include
gl_FragColor = vec4( outgoingLight, diffuseColor.a );
#include
#include
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#include
}
`;