Use enclosing int rect for picture shader tiles

Use enclosing int rect for picture shader tiles

To avoid rounding to zero for very small tiles.

BUG=chromium:590447
R=reed@google.com
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1749763002

Committed: https://skia.googlesource.com/skia/+/85c6f9849ed72f859680e93e7d24e3f61ff280f9

[f(malita), 2016-02-29 16:32:24]

Description was changed from

==========
Enforce a minimum 1x1 picture shader tile size

Rounding seems correct in the general case, but not when the scalar tile
size rounds to zero.

BUG=chromium:590447
R=reed@google.com
==========

to

==========
Enforce a minimum 1x1 picture shader tile size

Rounding seems correct in the general case, but not when the scalar tile
size rounds to zero.

BUG=chromium:590447
R=reed@google.com
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
==========

[f(malita), 2016-02-29 16:33:39]

The CQ bit was checked by fmalita@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-02-29 16:33:42]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1749763002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1749763002/1

[f(malita), 2016-02-29 16:41:30]

On 2016/02/29 16:33:28, f(malita) wrote:
> Rounding seems correct in the general case

Actually, SkPictureShader compensates for tile size discrepancies - so maybe
using toCeil is more consistent.

[f(malita), 2016-02-29 16:41:35]

The CQ bit was checked by fmalita@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-02-29 16:41:44]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1749763002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1749763002/20001

[f(malita), 2016-02-29 16:45:04]

Description was changed from

==========
Enforce a minimum 1x1 picture shader tile size

Rounding seems correct in the general case, but not when the scalar tile
size rounds to zero.

BUG=chromium:590447
R=reed@google.com
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
==========

to

==========
Use enclosing int rect for picture shader tiles

To avoid rounding to zero for very small tiles.

BUG=chromium:590447
R=reed@google.com
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
==========

[f(malita), 2016-02-29 16:45:27]

The CQ bit was checked by fmalita@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-02-29 16:45:35]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1749763002/40001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1749763002/40001

[commit-bot: I haz the power, 2016-02-29 17:01:29]

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

[commit-bot: I haz the power, 2016-02-29 17:01:30]

Dry run: This issue passed the CQ dry run.

[reed1, 2016-02-29 17:11:19]

lgtm

[f(malita), 2016-02-29 17:16:16]

The CQ bit was checked by fmalita@chromium.org

[commit-bot: I haz the power, 2016-02-29 17:16:18]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1749763002/40001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1749763002/40001

[commit-bot: I haz the power, 2016-02-29 17:18:33]

Description was changed from

==========
Use enclosing int rect for picture shader tiles

To avoid rounding to zero for very small tiles.

BUG=chromium:590447
R=reed@google.com
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...
==========

to

==========
Use enclosing int rect for picture shader tiles

To avoid rounding to zero for very small tiles.

BUG=chromium:590447
R=reed@google.com
GOLD_TRYBOT_URL=
https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&is...

Committed:
https://skia.googlesource.com/skia/+/85c6f9849ed72f859680e93e7d24e3f61ff280f9
==========

[commit-bot: I haz the power, 2016-02-29 17:18:33]

Committed patchset #3 (id:40001) as
https://skia.googlesource.com/skia/+/85c6f9849ed72f859680e93e7d24e3f61ff280f9