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=edgedetect.fp 6# This is some custom edge-detect like effect. 7# Try adjusting the gamma! 8# program.env[0].xy contains the size of one source texel 9TEMP res, yuv, pos, tmp, sizes; 10SWZ sizes, program.env[0], x, y, 0, 0; 11TEX yuv.r, fragment.texcoord[0], texture[0], 2D; 12ADD pos, fragment.texcoord[0].xyxy, sizes.xwwy; # texels to the right and below 13TEX tmp.r, pos.xyxy, texture[0], 2D; 14MAD yuv.r, yuv.rrrr, {4}, -tmp.rrrr; 15TEX tmp.r, pos.zwzw, texture[0], 2D; 16SUB yuv.r, yuv.rrrr, tmp.rrrr; 17SUB pos, fragment.texcoord[0].xyxy, sizes.xwwy; # texels to the left and above 18TEX tmp.r, pos.xyxy, texture[0], 2D; 19SUB yuv.r, yuv.rrrr, tmp.rrrr; 20TEX tmp.r, pos.zwzw, texture[0], 2D; 21SUB yuv.r, yuv.rrrr, tmp.rrrr; 22TEX yuv.g, fragment.texcoord[1], texture[1], 2D; 23TEX yuv.b, fragment.texcoord[2], texture[2], 2D; 24# now do the normal YUV -> RGB conversion but include effect strength 25# multiplication by 2 and 0.5 offset 26MAD res, yuv.rrrr, {2.328, 2.328, 2.328, 0}, {-0.37416, 1.03133, -0.58599, 0.125}; 27MAD res.rgb, yuv.gggg, {0, -0.391, 2.018, 0}, res; 28MAD res.rgb, yuv.bbbb, {1.596, -0.813, 0, 0}, res; 29# do gamma texture lookup 30TEX res.r, res.raaa, texture[3], 2D; 31ADD res.a, res.a, 0.25; 32TEX res.g, res.gaaa, texture[3], 2D; 33ADD res.a, res.a, 0.25; 34TEX res.b, res.baaa, texture[3], 2D; 35# move res into result, this allows easily commenting out some parts. 36MOV result.color, res; 37END 38