src/modules/engines/gl_common/shader/yuv_frag.shd

   1 #ifdef GL_ES
   2 precision mediump float;
   3 #endif
   4 uniform sampler2D tex, texu, texv;
   5 varying vec4 col;
   6 varying vec2 tex_c, tex_c2, tex_c3;
   7 void main()
   8 {
   9    const mat4 yuv2rgb = mat4( 1.16400,  1.16400,  1.16400, 0.00000,
  10                               0.00000, -0.34410,  1.77200, 0.00000,
  11                               1.40200, -0.71410,  0.00000, 0.00000,
  12                              -0.77380,  0.45630, -0.95880, 1.00000);
  13    gl_FragColor = (yuv2rgb * vec4(texture2D(tex, tex_c.xy).r,
  14                                   texture2D(texu, tex_c2.xy).r,
  15                                   texture2D(texv, tex_c3.xy).r, 1.0)) * col;
  16 }