9 * Copyright (C) 2007 David A. Schleef <ds@schleef.org>
10 * Copyright (C) 2008 Julien Isorce <julien.isorce@gmail.com>
11 * Copyright (C) 2008 Filippo Argiolas <filippo.argiolas@gmail.com>
13 * This library is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU Library General Public
15 * License as published by the Free Software Foundation; either
16 * version 2 of the License, or (at your option) any later version.
18 * This library is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
21 * Library General Public License for more details.
23 * You should have received a copy of the GNU Library General Public
24 * License along with this library; if not, write to the
25 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
26 * Boston, MA 02111-1307, USA.
29 #extension GL_ARB_texture_rectangle : enable
30 uniform sampler2DRect tex;
32 float fx,fy,r,g,b,r2,g2,b2,y1,y2,u,v;
33 fx = gl_TexCoord[0].x;
34 fy = gl_TexCoord[0].y;
35 r=texture2DRect(tex,vec2(fx*2.0,fy)).r;
36 g=texture2DRect(tex,vec2(fx*2.0,fy)).g;
37 b=texture2DRect(tex,vec2(fx*2.0,fy)).b;
38 r2=texture2DRect(tex,vec2(fx*2.0+1.0,fy)).r;
39 g2=texture2DRect(tex,vec2(fx*2.0+1.0,fy)).g;
40 b2=texture2DRect(tex,vec2(fx*2.0+1.0,fy)).b;
41 y1=0.299011*r + 0.586987*g + 0.114001*b;
42 y2=0.299011*r2 + 0.586987*g2 + 0.114001*b2;
43 u=-0.148246*r -0.29102*g + 0.439266*b;
44 v=0.439271*r - 0.367833*g - 0.071438*b ;
45 y1=0.858885*y1 + 0.0625;
46 y2=0.858885*y2 + 0.0625;
49 /* "%s" replaced with "y2,u,y1,v" in conversion to piglit (yuy2 version) */
50 gl_FragColor=vec4(y2,u,y1,v);