- ycbcr.y = texture2D(PREFIX(tex_cb), tc + PREFIX(chroma_offset)).x;
- ycbcr.z = texture2D(PREFIX(tex_cr), tc + PREFIX(chroma_offset)).x;
+ ycbcr.y = texture2D(PREFIX(tex_cb), tc + PREFIX(cb_offset)).x;
+ ycbcr.z = texture2D(PREFIX(tex_cr), tc + PREFIX(cr_offset)).x;