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
   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, y, u, v, xdiff, ydiff, pos, tmp;
   9 TEX y, fragment.texcoord[0], texture[0], 2D;
  10 SUB pos, fragment.texcoord[0], sizes.xwww;
  11 TEX tmp, pos, texture[0], 2D;
  12 SUB xdiff, y, tmp;
  13 MAD xdiff, xdiff, {0.5, 0.5, 0.5, 0}, {0.5, 0.5, 0.5, 0};
  14 SUB pos, fragment.texcoord[0], sizes.wyww;
  15 TEX tmp, pos, texture[0], 2D;
  16 SUB ydiff, y, tmp;
  17 MAD res, ydiff, {0.8660, 0.8660, 0.8660, 0}, xdiff;
  18 # now do the normal YUV -> RGB conversion
  19 MAD res, res, {1.164, 1.164, 1.164, 0}, {-0.87416, 0.53133, -1.08599, 0};
  20 TEX u, fragment.texcoord[1], texture[1], 2D;
  21 MAD res, u, {0, -0.391, 2.018, 0}, res;
  22 TEX v, fragment.texcoord[2], texture[2], 2D;
  23 MAD res, v, {1.596, -0.813, 0, 0}, res;
  24 # do gamma texture lookup
  25 ADD res.a, res.a, 0.125;
  26 TEX res.r, res.raaa, texture[3], 2D;
  27 ADD res.a, res.a, 0.25;
  28 TEX res.g, res.gaaa, texture[3], 2D;
  29 ADD res.a, res.a, 0.25;
  30 TEX res.b, res.baaa, texture[3], 2D;
  31 # move res into result, this allows easily commenting out some parts.
  32 ADD result.color, res, {0, 0, 0, 0};
  33 END