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
9PARAM strength = {0.5};
10TEMP res, yuv, pos, tmp, sizes, center;
11SWZ sizes, program.env[0], x, y, 0, 0;
12TEX center.r, fragment.texcoord[0], texture[0], 2D;
13ADD pos, fragment.texcoord[0].xyxy, sizes.xwwy; # texels to the right and below
14TEX tmp.r, pos.xyxy, texture[0], 2D;
15MAD yuv.r, center.rrrr, {4}, -tmp.rrrr;
16TEX tmp.r, pos.zwzw, texture[0], 2D;
17SUB yuv.r, yuv.rrrr, tmp.rrrr;
18SUB pos, fragment.texcoord[0].xyxy, sizes.xwwy; # texels to the left and above
19TEX tmp.r, pos.xyxy, texture[0], 2D;
20SUB yuv.r, yuv.rrrr, tmp.rrrr;
21TEX tmp.r, pos.zwzw, texture[0], 2D;
22SUB yuv.r, yuv.rrrr, tmp.rrrr;
23MAD yuv.r, yuv.rrrr, strength, center.rrrr;
24TEX yuv.g, fragment.texcoord[1], texture[1], 2D;
25TEX yuv.b, fragment.texcoord[2], texture[2], 2D;
26# now do the normal YUV -> RGB conversion
27MAD res, yuv.rrrr,  {1.164, 1.164, 1.164, 0}, {-0.87416, 0.53133, -1.08599, 0.125};
28MAD res.rgb, yuv.gggg, {0, -0.391, 2.018, 0}, res;
29MAD res.rgb, yuv.bbbb, {1.596, -0.813, 0, 0}, res;
30# do gamma texture lookup
31TEX res.r, res.raaa, texture[3], 2D;
32ADD res.a, res.a, 0.25;
33TEX res.g, res.gaaa, texture[3], 2D;
34ADD res.a, res.a, 0.25;
35TEX res.b, res.baaa, texture[3], 2D;
36# move res into result, this allows easily commenting out some parts.
37MOV result.color, res;
38END
39