2 * Copyright (C) 2010-2013 Team XBMC
5 * This Program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2, or (at your option)
10 * This Program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with XBMC; see the file COPYING. If not, see
17 * <http://www.gnu.org/licenses/>.
21 precision mediump float;
22 uniform sampler2D m_sampY;
23 uniform sampler2D m_sampU;
24 uniform sampler2D m_sampV;
28 uniform float m_alpha;
29 uniform mat4 m_yuvmat;
30 uniform float m_stepX;
31 uniform float m_stepY;
41 float temp1 = mod(m_cordY.y, 2*m_stepY);
47 offsetY.y -= (temp1 - m_stepY/2 + float(m_field)*m_stepY);
48 offsetU.y -= (temp1 - m_stepY/2 + float(m_field)*m_stepY)/2;
49 offsetV.y -= (temp1 - m_stepY/2 + float(m_field)*m_stepY)/2;
51 yuv.rgba = vec4(texture2D(m_sampY, offsetY).r, texture2D(m_sampU, offsetU).r, texture2D(m_sampV, offsetV).r, 1.0);