!!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=edgedetect.fp # This is some custom edge-detect like effect. # Try adjusting the gamma! # program.env[0].xy contains the size of one source texel TEMP res, yuv, pos, tmp, sizes; SWZ sizes, program.env[0], x, y, 0, 0; TEX yuv.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, yuv.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; 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 but include effect strength # multiplication by 2 and 0.5 offset MAD res, yuv.rrrr, {2.328, 2.328, 2.328, 0}, {-0.37416, 1.03133, -0.58599, 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