scatter-fragment.glsl

#include <fog_pars_fragment>

varying vec4 vertex_color;
varying vec3 vertex_position;
varying vec2 vertex_uv;

#ifdef USE_TEXTURE
uniform sampler2D texture;
uniform sampler2D texture_previous;
uniform float animation_time_texture;
#endif


void main(void) {
#ifdef USE_RGB
    gl_FragColor = vertex_color;
#else
 #ifdef AS_LINE
    gl_FragColor = vertex_color;
 #else
  #ifdef USE_SPRITE
   #ifdef USE_TEXTURE
    gl_FragColor = mix(texture2D(texture_previous, vertex_uv), texture2D(texture, vertex_uv), animation_time_texture);
   #else
    gl_FragColor = vertex_color;
   #endif
  #else
    vec3 fdx = dFdx( vertex_position );
    vec3 fdy = dFdy( vertex_position );
    vec3 normal = normalize( cross( fdx, fdy ) );
    float diffuse = dot( normal, vec3( 0.0, 0.0, 1.0 ) );

    gl_FragColor = vec4(clamp(diffuse, 0.2, 1.) * vertex_color.rgb, vertex_color.a);
  #endif
 #endif
#endif
	#include <fog_fragment>
}