//
// Fragment shader for procedural lighting
//
// Copyright (c) 2007 by Andrey Budko
//
// See gl_shader.c for license information
//

void DoFiltering()
{
  vec2 pixel_c  = vec2(rgbaBias) + vec2(rgbaScale) * texture2D(tex, texCoord).rg;

  final = vec4(texture2D(texColormap, vec2(pixel_c.r,  cm)).rgb, pixel_c.g);
}