!!ARBfp1.0
PARAM objectColor = program.local[0];
TEMP base;
TEMP mask;
TEMP color;

// Combine base texture and color, using mask texture
TEX base, fragment.texcoord[0], texture[0], 2D;
TEX mask, fragment.texcoord[0], texture[1], 2D;
#if USE_OBJECTCOLOR
  LRP color.rgb, mask, objectColor, base;
#else
  LRP color.rgb, mask, fragment.color, base;
#endif

#if IGNORE_LOS
  MOV result.color.rgb, color;
#else
  // Multiply RGB by LOS texture (red channel)
  TEMP los;
  TEX los, fragment.texcoord[1], texture[2], 2D;
  SUB los.r, los.r, 0.03;
  MUL los.r, los.r, 0.97;
  MUL result.color.rgb, color, los.r;
#endif

// Use alpha from base texture, combined with the object color/fragment alpha.
#if USE_OBJECTCOLOR
  MUL result.color.a, objectColor.a, base.a;
#else
  MUL result.color.a, fragment.color.a, base.a;
#endif

END