TOOLS/emboss.fp

   1 !!ARBfp1.0
   2 # Custom YUV->RGB conversion program for MPlayer's -vo gl.
   3 # Copyleft (C) Reimar Döffinger, 2005
   4 # Licensed under the GNU GPL v2 or later
   5 # Usage: mplayer -vo gl:yuv=4:customprog=emboss.fp
   6 # This is an emboss effect.
   7 PARAM sizes = program.env[0];
   8 TEMP res, yuv, pos, tmp;
   9 TEX yuv.r, fragment.texcoord[0], texture[0], 2D;
  10 MAD pos, sizes.xyxy, {-0.5, 0, 0, -0.8660}, fragment.texcoord[0].xyxy;
  11 TEX tmp.r, pos.xyxy, texture[0], 2D;
  12 MAD yuv.r, yuv.rrrr, {2}, -tmp.rrrr;
  13 TEX tmp.r, pos.zwzw, texture[0], 2D;
  14 SUB yuv.r, yuv.rrrr, tmp.rrrr;
  15 TEX yuv.g, fragment.texcoord[1], texture[1], 2D;
  16 TEX yuv.b, fragment.texcoord[2], texture[2], 2D;
  17 # now do the normal YUV -> RGB conversion but with 0.5 offset
  18 MAD res, yuv.rrrr, {1.164, 1.164, 1.164, 0}, {-0.37416, 1.03133, -0.58599, 0.125};
  19 MAD res.rgb, yuv.gggg, {0, -0.391, 2.018, 0}, res;
  20 MAD res.rgb, yuv.bbbb, {1.596, -0.813, 0, 0}, res;
  21 # do gamma texture lookup
  22 TEX res.r, res.raaa, texture[3], 2D;
  23 ADD res.a, res.a, 0.25;
  24 TEX res.g, res.gaaa, texture[3], 2D;
  25 ADD res.a, res.a, 0.25;
  26 TEX res.b, res.baaa, texture[3], 2D;
  27 # move res into result, this allows easily commenting out some parts.
  28 MOV result.color, res;
  29 END