+#if CB_CR_SAME_TEXTURE
+#if CB_CR_OFFSETS_EQUAL
+ ycbcr.yz = tex2D(PREFIX(tex_cbcr), tc + PREFIX(cb_offset)).xy;
+#else
+ ycbcr.y = tex2D(PREFIX(tex_cbcr), tc + PREFIX(cb_offset)).x;
+ ycbcr.z = tex2D(PREFIX(tex_cbcr), tc + PREFIX(cr_offset)).x;
+#endif
+#else