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-!!ARBfp1.0
-# Custom YUV->RGB conversion program for MPlayer's -vo gl.
-# Copyleft (C) Reimar Döffinger, 2005
-# Licensed under the GNU GPL v2 or later
-# Usage: mplayer -vo gl:yuv=4:customprog=edgeenh.fp
-# This is some custom edge-enhancement like effect.
-# Try adjusting the gamma!
-# program.env[0].xy contains the size of one source texel
-PARAM strength = {0.5};
-TEMP res, yuv, pos, tmp, sizes, center;
-SWZ sizes, program.env[0], x, y, 0, 0;
-TEX center.r, fragment.texcoord[0], texture[0], 2D;
-ADD pos, fragment.texcoord[0].xyxy, sizes.xwwy; # texels to the right and below
-TEX tmp.r, pos.xyxy, texture[0], 2D;
-MAD yuv.r, center.rrrr, {4}, -tmp.rrrr;
-TEX tmp.r, pos.zwzw, texture[0], 2D;
-SUB yuv.r, yuv.rrrr, tmp.rrrr;
-SUB pos, fragment.texcoord[0].xyxy, sizes.xwwy; # texels to the left and above
-TEX tmp.r, pos.xyxy, texture[0], 2D;
-SUB yuv.r, yuv.rrrr, tmp.rrrr;
-TEX tmp.r, pos.zwzw, texture[0], 2D;
-SUB yuv.r, yuv.rrrr, tmp.rrrr;
-MAD yuv.r, yuv.rrrr, strength, center.rrrr;
-TEX yuv.g, fragment.texcoord[1], texture[1], 2D;
-TEX yuv.b, fragment.texcoord[2], texture[2], 2D;
-# now do the normal YUV -> RGB conversion
-MAD res, yuv.rrrr, {1.164, 1.164, 1.164, 0}, {-0.87416, 0.53133, -1.08599, 0.125};
-MAD res.rgb, yuv.gggg, {0, -0.391, 2.018, 0}, res;
-MAD res.rgb, yuv.bbbb, {1.596, -0.813, 0, 0}, res;
-# do gamma texture lookup
-TEX res.r, res.raaa, texture[3], 2D;
-ADD res.a, res.a, 0.25;
-TEX res.g, res.gaaa, texture[3], 2D;
-ADD res.a, res.a, 0.25;
-TEX res.b, res.baaa, texture[3], 2D;
-# move res into result, this allows easily commenting out some parts.
-MOV result.color, res;
-END