Have SkRasterPipelineBlitter take over for 565 when it can.

Have SkRasterPipelineBlitter take over for 565 when it can.

This is an experiment / demo to have our 565 backend fold into
SkRasterPipelineBlitter as it grows more powerful.  I plan to follow up with
the same for the other 8888 format.

Blur mask filters look significantly different (better) after this change.
We keep the full 13-14-13 bits of precision for mask blits, where the old code
uses 11-11-10 bit intermediates.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2172343002

Committed: https://skia.googlesource.com/skia/+/8e4373f40be3362a2756c6522df3541253d0edb0

[mtklein_C, 2016-07-22 18:31:51]

Description was changed from

==========
Have SkRasterPipelineBlitter take over for 565 when it can.

This is an experiment / demo to have our 565 backend fold into
SkRasterPipelineBlitter as it grows more powerful.  I plan to follow up with
the same for the other 8888 format.

Blur mask filters look significantly different (better) after this change.
Why?

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

to

==========
Have SkRasterPipelineBlitter take over for 565 when it can.

This is an experiment / demo to have our 565 backend fold into
SkRasterPipelineBlitter as it grows more powerful.  I plan to follow up with
the same for the other 8888 format.

Blur mask filters look significantly different (better) after this change.
Why?

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2172343002
==========

[mtklein_C, 2016-07-22 18:33:27]

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

[commit-bot: I haz the power, 2016-07-22 18:33:37]

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, 2016-07-22 18:54:49]

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

[commit-bot: I haz the power, 2016-07-22 18:54:50]

Dry run: This issue passed the CQ dry run.

[mtklein_C, 2016-07-22 19:08:31]

mtklein@chromium.org changed reviewers:
+ reed@google.com

[mtklein_C, 2016-07-22 19:08:31]

Please note the logic I'm using for how to treat SkColor: (has color space) ?
sRGB : linear

[reed1, 2016-07-22 21:06:20]

lgtm

[mtklein_C, 2016-07-22 21:19:20]

Description was changed from

==========
Have SkRasterPipelineBlitter take over for 565 when it can.

This is an experiment / demo to have our 565 backend fold into
SkRasterPipelineBlitter as it grows more powerful.  I plan to follow up with
the same for the other 8888 format.

Blur mask filters look significantly different (better) after this change.
Why?

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2172343002
==========

to

==========
Have SkRasterPipelineBlitter take over for 565 when it can.

This is an experiment / demo to have our 565 backend fold into
SkRasterPipelineBlitter as it grows more powerful.  I plan to follow up with
the same for the other 8888 format.

Blur mask filters look significantly different (better) after this change.
We keep the full 13-14-13 bits of precision for mask blits, where the old code
uses 11-11-10 bit intermediates.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2172343002
==========

[mtklein_C, 2016-07-22 21:19:22]

The CQ bit was checked by mtklein@chromium.org

[commit-bot: I haz the power, 2016-07-22 21:19:33]

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, 2016-07-22 21:20:30]

Description was changed from

==========
Have SkRasterPipelineBlitter take over for 565 when it can.

This is an experiment / demo to have our 565 backend fold into
SkRasterPipelineBlitter as it grows more powerful.  I plan to follow up with
the same for the other 8888 format.

Blur mask filters look significantly different (better) after this change.
We keep the full 13-14-13 bits of precision for mask blits, where the old code
uses 11-11-10 bit intermediates.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2172343002
==========

to

==========
Have SkRasterPipelineBlitter take over for 565 when it can.

This is an experiment / demo to have our 565 backend fold into
SkRasterPipelineBlitter as it grows more powerful.  I plan to follow up with
the same for the other 8888 format.

Blur mask filters look significantly different (better) after this change.
We keep the full 13-14-13 bits of precision for mask blits, where the old code
uses 11-11-10 bit intermediates.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2172343002

Committed:
https://skia.googlesource.com/skia/+/8e4373f40be3362a2756c6522df3541253d0edb0
==========

[commit-bot: I haz the power, 2016-07-22 21:20:30]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/8e4373f40be3362a2756c6522df3541253d0edb0