Remove unneeded pipeline barrier in vulkan

Remove unneeded pipeline barrier in vulkan

We don't need to syncronize the mapped memory writes to the buffer since
all CPU writes are already syncronized when we submit a command buffer. And we are using coherent memory for buffers so we don't need to call vkFlushMappedMemory

BUG=skia:

Committed: https://skia.googlesource.com/skia/+/f5f97dd7ab0a9d7cf781a8457926f9d48f4b637e

[egdaniel, 2016-08-29 20:09:35]

Description was changed from

==========
Remove unneeded pipeline barrier in vulkan

We don't need to syncronize the mapped memory writes to the buffer since
all CPU writes are already syncronized when we submit a command buffer.

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

to

==========
Remove unneeded pipeline barrier in vulkan

We don't need to syncronize the mapped memory writes to the buffer since
all CPU writes are already syncronized when we submit a command buffer. And we
are using coherent memory for buffers so we don't need to call
vkFlushMappedMemory

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

[egdaniel, 2016-08-29 20:09:45]

egdaniel@google.com changed reviewers:
+ jvanverth@google.com

[egdaniel, 2016-08-29 20:09:49]

The CQ bit was checked by egdaniel@google.com

[commit-bot: I haz the power, 2016-08-29 20:09:52]

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, 2016-08-29 20:09:54]

Note for Reviewers:
The CQ is waiting for an approval.
If you believe that the CL is not ready yet, or if you would like to L-G-T-M
with comments then please uncheck the CQ checkbox.

Waiting for LGTM from valid reviewer(s) till 2016-08-30 02:09 UTC

[jvanverth1, 2016-08-29 20:24:30]

lgtm

[commit-bot: I haz the power, 2016-08-29 20:42:57]

Description was changed from

==========
Remove unneeded pipeline barrier in vulkan

We don't need to syncronize the mapped memory writes to the buffer since
all CPU writes are already syncronized when we submit a command buffer. And we
are using coherent memory for buffers so we don't need to call
vkFlushMappedMemory

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

to

==========
Remove unneeded pipeline barrier in vulkan

We don't need to syncronize the mapped memory writes to the buffer since
all CPU writes are already syncronized when we submit a command buffer. And we
are using coherent memory for buffers so we don't need to call
vkFlushMappedMemory

BUG=skia:

Committed:
https://skia.googlesource.com/skia/+/f5f97dd7ab0a9d7cf781a8457926f9d48f4b637e
==========

[commit-bot: I haz the power, 2016-08-29 20:42:58]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/f5f97dd7ab0a9d7cf781a8457926f9d48f4b637e