WebKit support for EXT_occlusion_query.

WebKit support for EXT_occlusion_query.

BUG=117768
TEST=none

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=126662

[nduca, 2012-03-13 17:48:15]

LGTM but lets resolve the question of extension name for the "chromium fence."

+apatrick for OWNERS

[apatrick_chromium, 2012-03-13 18:21:27]

https://chromiumcodereview.appspot.com/9693045/diff/8/webkit/gpu/webgraphicsc...
File webkit/gpu/webgraphicscontext3d_in_process_impl.cc (right):

https://chromiumcodereview.appspot.com/9693045/diff/8/webkit/gpu/webgraphicsc...
webkit/gpu/webgraphicscontext3d_in_process_impl.cc:1642: glGenQueriesARB(1, &o);
If glGenQueriesARB fails, o will be uninitialized.

[google-reveman, 2012-03-13 18:56:24]

On Tue, Mar 13, 2012 at 2:21 PM,  <apatrick@chromium.org> wrote:
>
>
https://chromiumcodereview.appspot.com/9693045/diff/8/webkit/gpu/webgraphicsc...
> File webkit/gpu/webgraphicscontext3d_in_process_impl.cc (right):
>
>
https://chromiumcodereview.appspot.com/9693045/diff/8/webkit/gpu/webgraphicsc...
> webkit/gpu/webgraphicscontext3d_in_process_impl.cc:1642:
> glGenQueriesARB(1, &o);
> If glGenQueriesARB fails, o will be uninitialized.

yes, but it's consistent with the other create*() functions and I'm
not sure conditionals based on available extensions belong in that
file.

>
> https://chromiumcodereview.appspot.com/9693045/

[apatrick_chromium, 2012-03-13 19:27:42]

I was looking at createFramebuffer which initializes o to zero before calling
glGenFramebuffers. I guess the others like createTexture don't. LGTM.