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attribute vec3 position;
#ifdef WIDTH
attribute float width;
#endif
#ifdef NORMAL
attribute vec3 normal;
#endif
attribute float materialIndex;
#ifdef COLOR
attribute vec4 color;
#endif
uniform mat3 normMat;
uniform mat4 viewMat;
uniform mat4 projViewMat;
#ifdef NORMAL
#ifndef ORTHOGRAPHIC
varying vec3 ViewPosition;
#endif
varying vec3 Normal;
#endif
varying vec4 diffuse;
varying vec3 specular;
varying float roughness,metallic,fresnel0;
varying vec4 emissive;
struct Material {
vec4 diffuse,emissive,specular;
vec4 parameters;
};
uniform Material Materials[Nmaterials];
void main(void)
{
vec4 v=vec4(position,1.0);
gl_Position=projViewMat*v;
#ifdef NORMAL
#ifndef ORTHOGRAPHIC
ViewPosition=(viewMat*v).xyz;
#endif
Normal=normalize(normal*normMat);
Material m;
#ifdef TRANSPARENT
m=Materials[int(abs(materialIndex))-1];
emissive=m.emissive;
if(materialIndex >= 0.0) {
diffuse=m.diffuse;
} else {
diffuse=color;
#if nlights == 0
emissive += color;
#endif
}
#else
m=Materials[int(materialIndex)];
emissive=m.emissive;
#ifdef COLOR
diffuse=color;
#if nlights == 0
emissive += color;
#endif
#else
diffuse=m.diffuse;
#endif
#endif
specular=m.specular.rgb;
vec4 parameters=m.parameters;
roughness=1.0-parameters[0];
metallic=parameters[1];
fresnel0=parameters[2];
#else
emissive=Materials[int(materialIndex)].emissive;
#endif
#ifdef WIDTH
gl_PointSize=width;
#endif
}
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