sRGB text fake-gamma progress

sRGB text fake-gamma progress:

Determine if we should use fake-gamma based on the render target format
and paint parameters (ie will gamma-correct blending happen?). Plumb that
down to the appropriate places in the bitmap text rendering for now.

Still need to alter the behavior of the DF text renderer (using the same
cue, most likely?). Also, this still doesn't account for the contrast
hack. The end result of this change is a pleasant normalizing of weight
when viewing text in the gpusrgb config. (Dark text gets heavier, light
text gets lighter).

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1865953003

Committed: https://skia.googlesource.com/skia/+/32f7782706fbf692c613457a74d080e18e27b15a

[Brian Osman, 2016-04-06 20:13:04]

Description was changed from

==========
sRGB fixes for text fake-gamma.

Determine if we should use fake-gamma based on the render target format
and paint parameters (will gamma-correct blending happen?). Plumb that
down to the appropriate places in the bitmap text rendering for now. May
use that to alter the behavior of DF text eventually.

BUG=skia:
==========

to

==========
sRGB fixes for text fake-gamma.

Determine if we should use fake-gamma based on the render target format
and paint parameters (will gamma-correct blending happen?). Plumb that
down to the appropriate places in the bitmap text rendering for now. May
use that to alter the behavior of DF text eventually.

BUG=skia:
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
==========

[Brian Osman, 2016-04-06 20:51:20]

Description was changed from

==========
sRGB fixes for text fake-gamma.

Determine if we should use fake-gamma based on the render target format
and paint parameters (will gamma-correct blending happen?). Plumb that
down to the appropriate places in the bitmap text rendering for now. May
use that to alter the behavior of DF text eventually.

BUG=skia:
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
==========

to

==========
sRGB text fake-gamma progress:

Determine if we should use fake-gamma based on the render target format
and paint parameters (ie will gamma-correct blending happen?). Plumb that
down to the appropriate places in the bitmap text rendering for now.

Still need to alter the behavior of the DF text renderer (using the same
cue, most likely?). Also, this still doesn't account for the contrast
hack. The end result of this change is a pleasant normalizing of weight
when viewing text in the gpusrgb config. (Dark text gets heavier, light
text gets lighter).

BUG=skia:
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
==========

[Brian Osman, 2016-04-06 20:51:46]

brianosman@google.com changed reviewers:
+ bsalomon@google.com, bungeman@google.com, jvanverth@google.com

[Brian Osman, 2016-04-06 20:54:00]

The CQ bit was checked by brianosman@google.com to run a CQ dry run

[commit-bot: I haz the power, 2016-04-06 20:54:05]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1865953003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1865953003/1

[bungeman-skia, 2016-04-06 21:05:19]

Passing the right setting around (instead of hard-coding it) seems like a good
idea to me, so that part lgtm. I defer to Jim on if the setting being computed
is the right one (though if it looks right, it's probably right).

[commit-bot: I haz the power, 2016-04-06 21:09:50]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-04-06 21:09:51]

Dry run: This issue passed the CQ dry run.

[jvanverth1, 2016-04-07 13:22:28]

On 2016/04/06 21:05:19, bungeman1 wrote:
> Passing the right setting around (instead of hard-coding it) seems like a good
> idea to me, so that part lgtm. I defer to Jim on if the setting being computed
> is the right one (though if it looks right, it's probably right).

The setting looks right. As far as enabling this for SDF text, the quick answer
is to pass that param into GrAtlasTextBatch::setupDfProcessor, and if fake gamma
is off set the correction values to 0. The cache that SDF text uses always has
fake gamma disabled.

[Brian Osman, 2016-04-07 13:24:42]

The CQ bit was checked by brianosman@google.com

[commit-bot: I haz the power, 2016-04-07 13:24:48]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1865953003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1865953003/1

[commit-bot: I haz the power, 2016-04-07 13:25:48]

Description was changed from

==========
sRGB text fake-gamma progress:

Determine if we should use fake-gamma based on the render target format
and paint parameters (ie will gamma-correct blending happen?). Plumb that
down to the appropriate places in the bitmap text rendering for now.

Still need to alter the behavior of the DF text renderer (using the same
cue, most likely?). Also, this still doesn't account for the contrast
hack. The end result of this change is a pleasant normalizing of weight
when viewing text in the gpusrgb config. (Dark text gets heavier, light
text gets lighter).

BUG=skia:
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
==========

to

==========
sRGB text fake-gamma progress:

Determine if we should use fake-gamma based on the render target format
and paint parameters (ie will gamma-correct blending happen?). Plumb that
down to the appropriate places in the bitmap text rendering for now.

Still need to alter the behavior of the DF text renderer (using the same
cue, most likely?). Also, this still doesn't account for the contrast
hack. The end result of this change is a pleasant normalizing of weight
when viewing text in the gpusrgb config. (Dark text gets heavier, light
text gets lighter).

BUG=skia:
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...

Committed:
https://skia.googlesource.com/skia/+/32f7782706fbf692c613457a74d080e18e27b15a
==========

[commit-bot: I haz the power, 2016-04-07 13:25:49]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/32f7782706fbf692c613457a74d080e18e27b15a