> On Dec 1, 2015, at 3:56 AM, Hai Nguyen <[email protected]> wrote:
>
> Hi Mark,
>
> Thanks for the explanation. Very helpful. I just recently tested this on
> Canary Chrome as well. Pretty much the same exact issue. Was curious about
> how GLSL ES3 gets translated into GLSL WebGL2? I didn't realize that varying
> was still used in GLSL WebGL2.
Sorry for my lack of clarity. The bare “2.0” I mentioned referred to OpenGL ES
2.0 where, of course, GLSL 1.00 uses only varying and #version must be 100.
The answer to your question is, it is and it isn’t. WebGL 2.0/OpenGL ES 3.0
support both GLSL 1.00 and GLSL 3.00. If you are using GLSL 1.00 then “varying"
must obviously still be used. However if you use GLSL 3.00 “varying" is an
error and “in” or “out” must be used.
Regards
-Mark
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