Revert of cmaa, gpu: use R8 image texture when GL_NV_image_formats is available.

Revert of cmaa, gpu: use R8 image texture when GL_NV_image_formats is available. (patchset #4 id:60001 of https://codereview.chromium.org/2693653002/ )

Reason for revert:
This breaks:
https://build.chromium.org/p/chromium.gpu/builders/Linux%20Debug%20%28NVIDIA%...

Error from the output:
[4533:4533:0307/120003.054303:1731388651:ERROR:gles2_cmd_apply_framebuffer_attachment_cmaa_intel.cc(647)]
ApplyFramebufferAttachmentCMAAINTEL: shader compilation failed:
GL_FRAGMENT_SHADER shader compilation failed: 0(1) : error C0000: syntax error,
unexpected $undefined at token "<undefined>"
0(1) : error C0155: integer constant overflow
0(4) : warning C7022: unrecognized profile specifier "highp"
0(4) : warning C7022: unrecognized profile specifier "precision"

Original issue's description:
> cmaa, gpu: use R8 image texture when GL_NV_image_formats is available.
> 
> Recently Mesa supports GL_NV_image_formats extension for r8 image texture for ES 3.1.
> https://bugs.freedesktop.org/show_bug.cgi?id=98480
> So CMAA can use R8 texture, instead of RGBA8.
> 
> In addition, CMAA implementation checks R8 support tests, and it slows down GPU
> initialization. Remove all unnecessary tests and just check certain extensions.
> 
> BUG=535198, 642290
> CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel
> 
> Review-Url: https://codereview.chromium.org/2693653002
> Cr-Commit-Position: refs/heads/master@{#455170}
> Committed: https://chromium.googlesource.com/chromium/src/+/8d2609f6aa6f0a9f8ae238b8af06770337d726eb

TBR=dongseong.hwang@chromium.org,piman@chromium.org,kbr@chromium.org,machenbach@chromium.org,dongseong.hwang@intel.com
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=535198, 642290
Review-Url: https://codereview.chromium.org/2738213003
Cr-Commit-Position: refs/heads/master@{#455805}
Committed: https://chromium.googlesource.com/chromium/src/+/870bce2d5e6ed3ba5d7b513b69d55fdb26efc2d6

[Zhenyao Mo, 2017-03-09 17:27:04]

The CQ bit was checked by zmo@chromium.org

[Zhenyao Mo, 2017-03-09 17:27:04]

Created Revert of cmaa, gpu: use R8 image texture when GL_NV_image_formats is
available.

[commit-bot: I haz the power, 2017-03-09 17:27:23]

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, 2017-03-09 18:39:28]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1489080424397390, "parent_rev":
"a0b781364f298dd4ec0a8d531a0da17fa4938b0a", "commit_rev":
"870bce2d5e6ed3ba5d7b513b69d55fdb26efc2d6"}

[commit-bot: I haz the power, 2017-03-09 18:40:08]

Description was changed from

==========
Revert of cmaa, gpu: use R8 image texture when GL_NV_image_formats is available.
(patchset #4 id:60001 of https://codereview.chromium.org/2693653002/ )

Reason for revert:
This breaks:
https://build.chromium.org/p/chromium.gpu/builders/Linux%20Debug%20%28NVIDIA%...

Error from the output:
[4533:4533:0307/120003.054303:1731388651:ERROR:gles2_cmd_apply_framebuffer_attachment_cmaa_intel.cc(647)]
ApplyFramebufferAttachmentCMAAINTEL: shader compilation failed:
GL_FRAGMENT_SHADER shader compilation failed: 0(1) : error C0000: syntax error,
unexpected $undefined at token "<undefined>"
0(1) : error C0155: integer constant overflow
0(4) : warning C7022: unrecognized profile specifier "highp"
0(4) : warning C7022: unrecognized profile specifier "precision"

Original issue's description:
> cmaa, gpu: use R8 image texture when GL_NV_image_formats is available.
> 
> Recently Mesa supports GL_NV_image_formats extension for r8 image texture for
ES 3.1.
> https://bugs.freedesktop.org/show_bug.cgi?id=98480
> So CMAA can use R8 texture, instead of RGBA8.
> 
> In addition, CMAA implementation checks R8 support tests, and it slows down
GPU
> initialization. Remove all unnecessary tests and just check certain
extensions.
> 
> BUG=535198, 642290
>
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel
> 
> Review-Url: https://codereview.chromium.org/2693653002
> Cr-Commit-Position: refs/heads/master@{#455170}
> Committed:
https://chromium.googlesource.com/chromium/src/+/8d2609f6aa6f0a9f8ae238b8af06...

TBR=dongseong.hwang@chromium.org,piman@chromium.org,kbr@chromium.org,machenba...
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=535198, 642290
==========

to

==========
Revert of cmaa, gpu: use R8 image texture when GL_NV_image_formats is available.
(patchset #4 id:60001 of https://codereview.chromium.org/2693653002/ )

Reason for revert:
This breaks:
https://build.chromium.org/p/chromium.gpu/builders/Linux%20Debug%20%28NVIDIA%...

Error from the output:
[4533:4533:0307/120003.054303:1731388651:ERROR:gles2_cmd_apply_framebuffer_attachment_cmaa_intel.cc(647)]
ApplyFramebufferAttachmentCMAAINTEL: shader compilation failed:
GL_FRAGMENT_SHADER shader compilation failed: 0(1) : error C0000: syntax error,
unexpected $undefined at token "<undefined>"
0(1) : error C0155: integer constant overflow
0(4) : warning C7022: unrecognized profile specifier "highp"
0(4) : warning C7022: unrecognized profile specifier "precision"

Original issue's description:
> cmaa, gpu: use R8 image texture when GL_NV_image_formats is available.
> 
> Recently Mesa supports GL_NV_image_formats extension for r8 image texture for
ES 3.1.
> https://bugs.freedesktop.org/show_bug.cgi?id=98480
> So CMAA can use R8 texture, instead of RGBA8.
> 
> In addition, CMAA implementation checks R8 support tests, and it slows down
GPU
> initialization. Remove all unnecessary tests and just check certain
extensions.
> 
> BUG=535198, 642290
>
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel
> 
> Review-Url: https://codereview.chromium.org/2693653002
> Cr-Commit-Position: refs/heads/master@{#455170}
> Committed:
https://chromium.googlesource.com/chromium/src/+/8d2609f6aa6f0a9f8ae238b8af06...

TBR=dongseong.hwang@chromium.org,piman@chromium.org,kbr@chromium.org,machenba...
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=535198, 642290

Review-Url: https://codereview.chromium.org/2738213003
Cr-Commit-Position: refs/heads/master@{#455805}
Committed:
https://chromium.googlesource.com/chromium/src/+/870bce2d5e6ed3ba5d7b513b69d5...
==========

[commit-bot: I haz the power, 2017-03-09 18:40:09]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/870bce2d5e6ed3ba5d7b513b69d5...