gm self-tests: add 565 mode testing, in addition to 8888 mode

gm self-tests: add 565 mode testing, in addition to 8888 mode
Committed: https://code.google.com/p/skia/source/detail?r=7489

[epoger, 2013-01-30 20:06:02]

I'd like to add 565 testing before moving further with
https://codereview.appspot.com/7238043/ ('output max-pixel-err if we're
comparing against known PNG files.')

[epoger, 2013-01-30 20:07:26]

+rmistry in CC

[reed1, 2013-01-30 20:44:15]

I am unfamiliar with this area. Can eric or ravi be the reviewer?

[epoger, 2013-01-30 20:46:23]

Sure, one of those guys can be the reviewer...

But my question for you, Mike: is it reasonable/good to keep gm working for 565
images?  Are there other configs (besides 8888 and 565) that are important for
gm to work for?

[reed1, 2013-01-30 20:47:09]

On 2013/01/30 20:46:23, epoger wrote:
> Sure, one of those guys can be the reviewer...
> 
> But my question for you, Mike: is it reasonable/good to keep gm working for
565
> images?  Are there other configs (besides 8888 and 565) that are important for
> gm to work for?

No other configs are important at the moment. only 8888 and 565

[robertphillips, 2013-01-30 20:51:22]

gpu?

[EricB, 2013-01-30 20:55:53]

I'm not terribly familiar with this either, but given that it's duplicating the
8888 code, I feel okay about LGTM-ing it.

[rmistry, 2013-01-30 21:00:02]

LGTM as well

[epoger, 2013-01-30 21:04:53]

On 2013/01/30 20:51:22, robertphillips wrote:
> gpu?

As far as I know, when running in gpu modes the bitmap is read back into an 8888
canvas.  Mike, is that right?

[reed1, 2013-01-30 21:05:32]

On 2013/01/30 21:04:53, epoger wrote:
> On 2013/01/30 20:51:22, robertphillips wrote:
> > gpu?
> 
> As far as I know, when running in gpu modes the bitmap is read back into an
8888
> canvas.  Mike, is that right?

Roger dodger