Improvements for circluar blurs in GPU backend.

Improvements for circluar blurs in GPU backend.

Use half plane approximation for small blur of a large circle. This reduces
the number of textures used and also avoids numerical issues with large
circle radii.


Make GrCircleGradientEffect use fixed sized textures.
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2242973002

Committed: https://skia.googlesource.com/skia/+/af68fa11ed61d8a14d9ca15996e2da6ca06795eb

[bsalomon, 2016-08-12 18:40:56]

Description was changed from

==========
Improvements for circluar blurs in GPU backend.

Use half plane approximation for small blur of a large circle. This reduces
the number of textures used and also avoids numerical issues with large
circle radii.


Make GrCircleGradientEffect use fixed sized textures.
==========

to

==========
Improvements for circluar blurs in GPU backend.

Use half plane approximation for small blur of a large circle. This reduces
the number of textures used and also avoids numerical issues with large
circle radii.


Make GrCircleGradientEffect use fixed sized textures.
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2242973002
==========

[robertphillips, 2016-08-15 22:06:27]

robertphillips@google.com changed reviewers:
+ robertphillips@google.com

[robertphillips, 2016-08-15 22:06:28]

lgtm

[robertphillips, 2016-08-15 22:06:34]

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

[commit-bot: I haz the power, 2016-08-15 22:06:41]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-08-15 22:19:17]

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

[commit-bot: I haz the power, 2016-08-15 22:19:19]

Dry run: Try jobs failed on following builders:
  Build-Win-MSVC-x86_64-Debug-Trybot on master.client.skia.compile (JOB_FAILED,
http://build.chromium.org/p/client.skia.compile/builders/Build-Win-MSVC-x86_6...)

[bsalomon, 2016-08-16 14:49:11]

The CQ bit was checked by bsalomon@google.com

[bsalomon, 2016-08-16 14:49:11]

The patchset sent to the CQ was uploaded after l-g-t-m from
robertphillips@google.com
Link to the patchset: https://codereview.chromium.org/2242973002/#ps100001
(title: "Fix double to float conversion on windows")

[commit-bot: I haz the power, 2016-08-16 14:49:17]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-08-16 16:25:00]

Description was changed from

==========
Improvements for circluar blurs in GPU backend.

Use half plane approximation for small blur of a large circle. This reduces
the number of textures used and also avoids numerical issues with large
circle radii.


Make GrCircleGradientEffect use fixed sized textures.
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2242973002
==========

to

==========
Improvements for circluar blurs in GPU backend.

Use half plane approximation for small blur of a large circle. This reduces
the number of textures used and also avoids numerical issues with large
circle radii.


Make GrCircleGradientEffect use fixed sized textures.
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2242973002

Committed:
https://skia.googlesource.com/skia/+/af68fa11ed61d8a14d9ca15996e2da6ca06795eb
==========

[commit-bot: I haz the power, 2016-08-16 16:25:02]

Committed patchset #6 (id:100001) as
https://skia.googlesource.com/skia/+/af68fa11ed61d8a14d9ca15996e2da6ca06795eb