Bumped num stages to 4 in preparation for AA clipping

Bumped num stages to 4 in preparation for AA clipping

[bsalomon, 2012-04-27 18:54:11]

LGTM, let's keep an eye on bench to see what happens... this affects the length
of the program cache key that is generated/hashed per-draw.

[TomH, 2012-04-27 18:57:09]

Ooh, yeah, that could be bad.

[robertphillips, 2012-04-27 19:00:26]

committed as r3783

[TomH, 2012-04-30 18:09:02]

Just to follow up on the bench question: Mac might have gotten slightly worse,
Windows is OK, and Linux is too noisy to tell. Overall looks like no problem.

[robertphillips, 2012-04-30 19:04:44]

I was watching these Friday afternoon and came to the same conclusions.

On Mon, Apr 30, 2012 at 2:09 PM, <tomhudson@google.com> wrote:

> Just to follow up on the bench question: Mac might have gotten slightly
> worse, Windows is OK, and Linux is too noisy to tell. Overall looks like
> no problem.
>
>
http://codereview.appspot.com/**6135046/<http://codereview.appspot.com/6135046/>
>

[junov1, 2012-04-30 22:46:07]

FYI, that patch just used-up the last available vertex attribute index for
platforms that are limited to 8.

On Mon, Apr 30, 2012 at 3:04 PM, Robert Phillips
<robertphillips@google.com>wrote:

> I was watching these Friday afternoon and came to the same conclusions.
>
>
> On Mon, Apr 30, 2012 at 2:09 PM, <tomhudson@google.com> wrote:
>
>> Just to follow up on the bench question: Mac might have gotten slightly
>> worse, Windows is OK, and Linux is too noisy to tell. Overall looks like
>> no problem.
>>
>>
http://codereview.appspot.com/**6135046/<http://codereview.appspot.com/6135046/>
>>
>
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