#ifdef GL_ES
#ifdef GL_FRAGMENT_PRECISION_HIGH
precision highp float;
#else
precision mediump float;
#endif
#endif
uniform sampler2D tex, texu, texv;
varying vec4 col;
varying vec2 tex_c, tex_c2, tex_c3;
void main()
{
   const mat4 yuv2rgb = mat4( 1.16400,  1.16400,  1.16400, 0.00000,
                              0.00000, -0.34410,  1.77200, 0.00000,
                              1.40200, -0.71410,  0.00000, 0.00000,
                             -0.77380,  0.45630, -0.95880, 1.00000);
   gl_FragColor = (yuv2rgb * vec4(texture2D(tex, tex_c.xy).r,
                                  texture2D(texu, tex_c2.xy).r,
                                  texture2D(texv, tex_c3.xy).r, 1.0)) * col;
}