This change allows us to download a copy of the standalone glslang
validator during gclient runhooks. This decouples run_code_generation
from the version of glslang stored in source tree. This prevents the
error where a developer would run into a code generation conflict due
to a change in version of glslang.

Currently only the Windows version is stored in the tree. A follow-up
CL will add Linux. The validator will only initially support Windows
or Linux.

Documentation for the script is located in tools/glslang/README.md.
This CL also updates the Vulkan shader generation script to use the
new binary for Windows.

Bug: angleproject:3333
Change-Id: Ia6146a283a2bcfdf84c42411d6b5d8bae136bf1b
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1553823
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>

This tool can allow you to browser markdown files in the repository
locally. Run tools/md_browser/md_browser.py and navigate to
localhost:8080. It will point you to the root README.md. From there
you can put in relative links to navigate to your new or changed
markdown files.

Bug: angleproject:3333
Change-Id: I5b4d608e2ad7408280868eb6561f95f3e55d8e8f
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1556696Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

Bug: angleproject:2361
Change-Id: Icca49086d95ddb0d2d50e5ba71ae9b748eeabf3f
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1545203Reviewed-by: Jonah Ryan-Davis <jonahr@google.com>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>

Manual roll to unblock the autoroller stuck on presubmit failure.

Bug: None
Change-Id: I97094add66a42154309addea43fe6aa5e1411c43
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1556694Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>

The test was previously either masking every three aspect (color, depth
and stencil) or none.  This was not exercising every clear path in the
Vulkan backend.

Bug: angleproject:3241
Change-Id: Ief4085ea302ec17bffe30b1f8510ae357fd01290
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1551523
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Yuly Novikov <ynovikov@chromium.org>

Image clear's masked clear path using a draw call was using this feature
to clear the depth buffer, but this feature is not available on ARM and
some Qualcomm devices.

This change adds a push constant to the vertex shader used in this call
to export the depth clear value, removing the need to rely on depth
clamping.

Bug: angleproject:3241
Change-Id: I565cd5f731c441820e0702e51dfdf02d0bc7de06
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1551522
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Tobin Ehlis <tobine@google.com>

Previously, masked stencil clear was done by clearing every stencil bit
to the ClearValue & Mask.  The correct behavior as implemented in this
change is to clear only the bits that are set in Mask.  This can only be
done through a draw call, with ClearValue as the stencil reference, and
Mask as the stencil write mask.

Note: this change relies on the depthClamp Vulkan feature which is not
available on ARM.

Bug: angleproject:3241
Change-Id: I0a181c32f881ee813f144e7bdd6f42c8ea6f1966
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1548442
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Tobin Ehlis <tobine@google.com>

Plumb the physical HW's subPixelPrecisionBits limit to be returned in
the query for GL_SUBPIXEL_BITS. Default value remains 4 for all other
backends.

Bug: angleproject:3351
Change-Id: I5564e5090e7211b8daeaa91ea30eceb23c5ea227
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1553967Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Commit-Queue: Tobin Ehlis <tobine@google.com>

Determine the destination internalFormat correctly.

dEQP-EGL.functional.image.modify.renderbuffer_rgb565_tex_subimage_rgb8
dEQP-EGL.functional.image.modify.renderbuffer_rgba4_tex_subimage_rgba8
dEQP-EGL.functional.image.modify.tex_rgb565_tex_subimage_rgb8
dEQP-EGL.functional.image.modify.tex_rgba4_tex_subimage_rgba8
dEQP-EGL.functional.image.modify.tex_rgba8_tex_subimage_rgba5_a1
dEQP-EGL.functional.image.modify.tex_rgba8_tex_subimage_rgba4
dEQP-EGL.functional.image.modify.tex_rgba5_a1_tex_subimage_rgba8
dEQP-EGL.functional.image.modify.tex_rgba5_a1_tex_subimage_rgba4
dEQP-EGL.functional.image.modify.tex_rgba4_tex_subimage_rgba8
dEQP-EGL.functional.image.modify.tex_rgba4_tex_subimage_rgba5_a1
dEQP-EGL.functional.image.modify.renderbuffer_rgba4_tex_subimage_rgba8
dEQP-EGL.functional.image.modify.renderbuffer_rgba4_tex_subimage_rgba5_a1
dEQP-EGL.functional.image.modify.renderbuffer_rgb5_a1_tex_subimage_rgba8
dEQP-EGL.functional.image.modify.renderbuffer_rgb5_a1_tex_subimage_rgba4

Bug: angleproject:3170
Change-Id: Ic9870390b2d4a0dcbe561efd3fb1597faadb7d79
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1524404
Commit-Queue: Tim Van Patten <timvp@google.com>
Reviewed-by: Geoff Lang <geofflang@chromium.org>

https://chromium.googlesource.com/external/github.com/KhronosGroup/SPIRV-Tools.git/+log/e2ddb9371edb..e8c2d95ed45f


Created with:
  gclient setdep -r ./third_party/spirv-tools/src@e8c2d95ed45f

The AutoRoll server is located here: https://autoroll.skia.org/r/spirv-tools-angle-autoroll

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.


TBR=syoussefi@google.com

Change-Id: Idc4d741c4ddd93a7a3ac8516572fbd38f47f2c6a
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1554562Reviewed-by: angle-autoroll <angle-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: angle-autoroll <angle-autoroll@skia-public.iam.gserviceaccount.com>

https://chromium.googlesource.com/external/github.com/KhronosGroup/SPIRV-Headers.git/+log/111a25e4ae45..2434b89345a5


Created with:
  gclient setdep -r ./third_party/spirv-headers/src@2434b89345a5

The AutoRoll server is located here: https://autoroll.skia.org/r/spirv-headers-angle-autoroll

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.


TBR=syoussefi@google.com

Change-Id: Ia36909b72970b177fbaf6074899469d673a27297
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1554561Reviewed-by: angle-autoroll <angle-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: angle-autoroll <angle-autoroll@skia-public.iam.gserviceaccount.com>

This adds entrypoints for the Linux variants of GL_EXT_memory_object &
GL_EXT_semaphore.

Bug: angleproject:3289

Change-Id: I40de40f27aa82cd9479d5913dac0a7493919bb8f
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1552026
Commit-Queue: Michael Spang <spang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>

This implements glCreateMemoryObjectsEXT, glDeleteMemoryObjectsEXT, and
glIsMemoryObjectEXT. It's not possible to do anything useful with them
yet.

Bug: angleproject:3289

Change-Id: I8882b657e9de564b5f97f8dea87838f67b1928f8
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1552025
Commit-Queue: Michael Spang <spang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>

This adds entrypoints for two new extensions that will be useful for
importing external Vulkan objects into ANGLE.

Bug: angleproject:3289

Change-Id: I206dc76eda5c6c8d836db7c6413c5544326aa722
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1552024
Commit-Queue: Michael Spang <spang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>

The Qualcomm bug workaround is changed such that clears still go through
the render pass loadOp, but the render pass is immediately closed.  This
allows us to remove a few fallback methods.

Bug: angleproject:2361
Change-Id: I24c3884a183f8bb40673e922773f70faffad848f
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1545524Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>

Previously we would store the unsized 'base' format as the internal
format. For instance for GL_COMPRESSED_RGB_S3TC_DXT1_EXT we would store
GL_RGB. With the new spec validation for TexSubImage it becomes clearer
to store the internal format of the compressed texture as the 'format'.

Bug: angleproject:3170
Change-Id: I7446418896eabd3d4f143e9cae4976889b973674
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1553379Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Tim Van Patten <timvp@google.com>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

Makes the files parsable as c++ files.

Bug: chromium:943709
Change-Id: I6f7d718f9773fe4a7f72828ee9cd56beb5577c66
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1545528Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

https://chromium.googlesource.com/external/github.com/KhronosGroup/glslang/+log/ef807f4bc543..1240db678cae


Created with:
  gclient setdep -r ./third_party/glslang/src@1240db678cae

The AutoRoll server is located here: https://autoroll.skia.org/r/glslang-angle-autoroll

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.


TBR=syoussefi@google.com

Change-Id: I9582981b9b1d2494f03e1c2fbd88a4c70d41a89c
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1552498Reviewed-by: angle-autoroll <angle-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: angle-autoroll <angle-autoroll@skia-public.iam.gserviceaccount.com>

Instead of using one draw call that clears all attachments, multiple
draw calls are issued that clear a single attachment each.  This allows
us to have a manageable number of variations for the ImageClear.frag
shader, now that non-float format support is introduced.

Bug: angleproject:3187
Change-Id: Ic0c1067a396250bd80f31d00cad5a272acff8be8
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1545523
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>

This allows issuing draw calls which only manipulate depth/stencil.

Bug: angleproject:3241
Change-Id: I62ab18a185ea5b234d3559f30c5b2b8ecb317bbb
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1550900
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>

Prints more info when a particular file is not found.

Bug: angleproject:3333
Change-Id: I11ceb0d319023cd1fd23fd25297e5367030342a0
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1550899Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

This should prevent CLs failing presubmit checks from landing.

Bug: angleproject:3288
Change-Id: I7d4ee56bd2cbe0089248d1737275aaeac8394d96
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1551839Reviewed-by: Jamie Madill <jmadill@chromium.org>

We were not properly adding the offset to compute the right bounds.

Bug: chromium:943709
Change-Id: I93e714b46dd366d5833fffa858ea3ab0322ffa92
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1548441
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Jonah Ryan-Davis <jonahr@google.com>

The tests crash on Nvidia in the driver.

Bug: 945415
Change-Id: I0f635eb5d99ecaeeaff055793b1b5fd3a314b055
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1548440
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>

Possible driver bug.

Bug: angleproject:3342
Change-Id: Ia171a7ac0d764859c4440b1fe2986aa931ff75c2
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1550799Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

https://chromium.googlesource.com/external/github.com/KhronosGroup/glslang/+log/e0d59bbe1857..ef807f4bc543


Created with:
  gclient setdep -r ./third_party/glslang/src@ef807f4bc543

The AutoRoll server is located here: https://autoroll.skia.org/r/glslang-angle-autoroll

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.


TBR=syoussefi@google.com

Change-Id: I6d65dfbb90b5b8deee9e90c873d5d2ac03a14afe
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1550141Reviewed-by: angle-autoroll <angle-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: angle-autoroll <angle-autoroll@skia-public.iam.gserviceaccount.com>

https://chromium.googlesource.com/external/github.com/KhronosGroup/SPIRV-Tools.git/+log/320a7de5c9a5..e2ddb9371edb


Created with:
  gclient setdep -r ./third_party/spirv-tools/src@e2ddb9371edb

The AutoRoll server is located here: https://autoroll.skia.org/r/spirv-tools-angle-autoroll

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.


TBR=syoussefi@google.com

Change-Id: Ib84307d822bafaec4d9185e75c830266d72bd6d3
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1550083Reviewed-by: angle-autoroll <angle-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: angle-autoroll <angle-autoroll@skia-public.iam.gserviceaccount.com>

This parallelizes the compiling and linking for compute shaders on
the D3D backend.

Bug: chromium:849576

Change-Id: Idd6b418cb9c2448209c15eab2756599f8ff7af4c
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1415725Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jie A Chen <jie.a.chen@intel.com>

Bug: angleproject:2764
Change-Id: I3fdab330b59ed996f68e3063debca29323a66cf0
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1542599
Commit-Queue: James Darpinian <jdarpinian@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>

Chaining of submit semaphores is only needed for window surfaces because they
are required for the first usage of the swap chain image and final present
of the image.

Move ownership of the submit semaphores from RendererVk to WindowSurfaceVk and
update all calls to finish and flush to be piped through a ContextVk which
tracks the currently bound window surface.

BUG=angleproject:2464

Change-Id: I4b3083124d7910a5dee297afc219e3a3f28057f2
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1542257
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>

Bug: angleproject:3336
Change-Id: If2075b3ed2fe0be95ab2ec9cd0398afef691dee8
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1548433Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

Refactors FramebufferVk::clear such that specific render targets could
be cleared, with clear values not necessarily set through glClearColor
etc.

FramebufferVk::clearWithRenderPassOp is modified so that loadOp and
clear values are set after the render pass has been registered in the
graph.  This allows multiple glClearBuffer calls to coalesce into the
same render pass.

glClearBuffer calls are then implemented simply as calls to the
refactored clear function with the appropriate parameters.

Bug: angleproject:3187
Change-Id: I2fdfcbea5bf244f63ec981b91caca47f5ee3cd3a
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1545204
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Tim Van Patten <timvp@google.com>

More flaky failures that were being hidden by test retries. Might take a
few more patches in order to disable test retries.

Bug: angleproject:3271
Bug: angleproject:1729
Change-Id: I97eb02d6e93892a04db8b09992f32c4c20dbd49b
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1549314Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jonah Ryan-Davis <jonahr@google.com>

BUG=948286

Change-Id: I85f44622efaf4f018d00046e4fc5dc0757f38539
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1545127Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Geoff Lang <geofflang@chromium.org>

This test is to ensure the upcoming Vulkan implementation can coalesce
all the calls into a single render pass clear.

Bug: angleproject:2361
Change-Id: I816907b3512715c1d3217689413b6c8e9842a37a
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1544973
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Yuly Novikov <ynovikov@chromium.org>

This test is to ensure the upcoming Vulkan implementation uses the right
colors for each render target.

Bug: angleproject:2361
Change-Id: Ibc6f8b474ac598a20d8cc9ac1c7fd18667370cbf
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1544972Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>

This file changes a lot less than git HEAD. And it should guard against
the same changes. Should reduce the instances of developer confusion
regarding run_code_generation being out of data.

Also update the presubmit check to print a more helpful message in the
case where the code does need to be regenerated.

Bug: angleproject:3333
Change-Id: I190dab5be50fc42512bdfc11c2d200f34f3b2092
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1545123
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Yuly Novikov <ynovikov@chromium.org>

The ci section is for continuous integration. This change should allow
for the presubmit tester to show up on the list of additional trybots.

Bug: angleproject:3288
Change-Id: I95ac359434557a76cb4f87a1d38aaec90879e406
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1545527Reviewed-by: Jamie Madill <jmadill@chromium.org>

Done after noticing a bug in the Vulkan backend where masked (and
possibly scissored) color clears were only clearing the first
attachment.

Bug: angleproject:2361
Change-Id: I471d337b1c3a3a5e17748690ae2222a6351773ac
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1544971Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>

This runs the run_presubmit canned recipe. It should work the same as
it would in Chromium or Dawn or most other repos. It should prevent
rollers and devs from landing several common types of dirty changes.

This CL adds the builder that then we can test manually before adding
it to the CQ.

Bug: angleproject:3288
Change-Id: I45e78669d0b6c34cef50ab9cb45c33a1b8bb6aca
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1548293Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>