textures/tranquility/concrete
{
   q3map_lightmapSize 1024 1024
   q3map_lightmapBrightness 4.0
   qer_editorImage textures/tranquility/concrete.tga
   {
      map textures/tranquility/concrete.tga
      rgbGen identity
   }
   {
      map $lightmap
      blendFunc filter
      rgbGen identityLighting
      tcGen lightmap
   }
}

void ColorToBytes( const float *color, byte *colorBytes, float scale )
{
   int      i;
   float   max, gamma;
   vec3_t   sample;
   
   
   /* ydnar: scaling necessary for simulating r_overbrightBits on external lightmaps */
   if( scale <= 0.0f )
      scale = 1.0f;
   
   /* make a local copy */
   VectorScale( color, scale, sample );
   
   /* muck with it */
   gamma = 1.0f / lightmapGamma;
   for( i = 0; i < 3; i++ )
   {
      /* handle negative light */
      if( sample[ i ] < 0.0f )
      {
         sample[ i ] = 0.0f;
         continue;
      }
      
      /* gamma */
      sample[ i ] = pow( sample[ i ] / 255.0f, gamma ) * 255.0f;
   }
   
   /* clamp with color normalization */
   max = sample[ 0 ];
   if( sample[ 1 ] > max )
      max = sample[ 1 ];
   if( sample[ 2 ] > max )
      max = sample[ 2 ];
   if( max > 255.0f )
      VectorScale( sample, (255.0f / max), sample );
   
   /* compensate for ingame overbrighting/bitshifting */
   VectorScale( sample, (1.0f / lightmapCompensate), sample );
   
   /* store it off */
   colorBytes[ 0 ] = sample[ 0 ];
   colorBytes[ 1 ] = sample[ 1 ];
   colorBytes[ 2 ] = sample[ 2 ];
}