TOOLS/edgeenh.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=edgeenh.fp
   6 # This is some custom edge-enhancement like effect.
   7 # Try adjusting the gamma!
   8 # program.env[0].xy contains the size of one source texel
   9 PARAM strength = {0.5};
  10 TEMP res, yuv, pos, tmp, sizes, center;
  11 SWZ sizes, program.env[0], x, y, 0, 0;
  12 TEX center.r, fragment.texcoord[0], texture[0], 2D;
  13 ADD pos, fragment.texcoord[0].xyxy, sizes.xwwy; # texels to the right and below
  14 TEX tmp.r, pos.xyxy, texture[0], 2D;
  15 MAD yuv.r, center.rrrr, {4}, -tmp.rrrr;
  16 TEX tmp.r, pos.zwzw, texture[0], 2D;
  17 SUB yuv.r, yuv.rrrr, tmp.rrrr;
  18 SUB pos, fragment.texcoord[0].xyxy, sizes.xwwy; # texels to the left and above
  19 TEX tmp.r, pos.xyxy, texture[0], 2D;
  20 SUB yuv.r, yuv.rrrr, tmp.rrrr;
  21 TEX tmp.r, pos.zwzw, texture[0], 2D;
  22 SUB yuv.r, yuv.rrrr, tmp.rrrr;
  23 MAD yuv.r, yuv.rrrr, strength, center.rrrr;
  24 TEX yuv.g, fragment.texcoord[1], texture[1], 2D;
  25 TEX yuv.b, fragment.texcoord[2], texture[2], 2D;
  26 # now do the normal YUV -> RGB conversion
  27 MAD res, yuv.rrrr,  {1.164, 1.164, 1.164, 0}, {-0.87416, 0.53133, -1.08599, 0.125};
  28 MAD res.rgb, yuv.gggg, {0, -0.391, 2.018, 0}, res;
  29 MAD res.rgb, yuv.bbbb, {1.596, -0.813, 0, 0}, res;
  30 # do gamma texture lookup
  31 TEX res.r, res.raaa, texture[3], 2D;
  32 ADD res.a, res.a, 0.25;
  33 TEX res.g, res.gaaa, texture[3], 2D;
  34 ADD res.a, res.a, 0.25;
  35 TEX res.b, res.baaa, texture[3], 2D;
  36 # move res into result, this allows easily commenting out some parts.
  37 MOV result.color, res;
  38 END