The following dEQP cases can pass with
https://chromium-review.googlesource.com/c/1207216:

dEQP-GLES31.functional.texture.gather.basic.2d_array.rgba8.texture_swizzle.*
dEQP-GLES31.functional.texture.gather.offset.implementation_offset.2d_array.rgba8.texture_swizzle.*

Bug: angleproject:2826
Test: dEQP-GLES31.functional.texture.gather.basic.2d_array.rgba8.texture_swizzle.*
      dEQP-GLES31.functional.texture.gather.offset.implementation_offset.2d_array.rgba8.texture_swizzle.*

Change-Id: Iaf6c4ca5abff1a7ae97d47a0d323bead38a7d8c1
Reviewed-on: https://chromium-review.googlesource.com/c/1267659Reviewed-by: Jiajia Qin <jiajia.qin@intel.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Jiawei Shao <jiawei.shao@intel.com>

This switch can be cached in a very fast packed map. The map contents
only change if different extensions are exposed. This reduces the
number of instructions we hit in ValidateBindTexture.

Bug: angleproject:2763
Change-Id: I6ba8a4124d85e4c193d0dee3e03e50713d51b1f4
Reviewed-on: https://chromium-review.googlesource.com/c/1262739
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Yuly Novikov <ynovikov@google.com>

Bug: angleproject:2763
Change-Id: Ib8193e7ff5ee7763b92f4775fb7e9adaa51c9305
Reviewed-on: https://chromium-review.googlesource.com/c/1262738
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Yuly Novikov <ynovikov@google.com>

The old implementation missed considering compute program would also enter
into applyActiveAttribLocationsMask. However, there was no bindVertexArray
before updateAttribEnabled which resulted the previous VAO state was modified
in unknown. And that's why ComputeBoids example wouldn't work correctly.

This change adds a checking to not enter propagateProgramToVAO if it's a
compute program since compute shader doesn't have vertex attributes. And
an ASSERT is added to make sure that the right VAO is bound when
updateAttribEnabled is called in applyActiveAttribLocationsMask.

Bug: angleproject:2810

Change-Id: I6e77853498a527ef3b755bbb1da5826a9134b164
Reviewed-on: https://chromium-review.googlesource.com/c/1226227Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Commit-Queue: Jiajia Qin <jiajia.qin@intel.com>

This covers most of the hot paths used in draw calls. Gives in the
order of a 5% reduction in draw call overhead.

Bug: angleproject:2491
Change-Id: I2d53afb1163eaceed61fb9cd9ce6c1267c85c0fa
Reviewed-on: https://chromium-review.googlesource.com/c/1258149Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

Replace these with ANGLE_CHECK_*_ALLOC and ANGLE_CHECK_*_MATH depending
on the specific error type.

Bug: angleproject:2491
Change-Id: Ic4395101fe701c563ae2b92aa2c55c93b934a7de
Reviewed-on: https://chromium-review.googlesource.com/c/1262737Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Frank Henigman <fjhenigman@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

To minimize system impact, have feature configuration utility
live in it's own library.

Bug=angleproject:2418

Change-Id: Ic8e3862965e515ded7e1a6078a7b9f8b92878818
Reviewed-on: https://chromium-review.googlesource.com/c/1269822Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Yuly Novikov <ynovikov@google.com>
Commit-Queue: Courtney Goeltzenleuchter <courtneygo@google.com>

Begin and end queries insert an execution barrier in the command graph
to ensure the commands around them are not reordered w.r.t to the query.

Also, these commands cannot be recorded in separate secondary command
buffers.  Therefore, special-function nodes are created to perform the
begin and end query calls on the final primary command buffer.

Bug: angleproject:2855
Change-Id: Ie216dfdd6a2009deaaf744fd15d2db6899dd93e9
Reviewed-on: https://chromium-review.googlesource.com/c/1259762Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>

Some of these are targeting our workaround for a mac bug. The bug was
that the driver was somehow modifying output attachments that the
program wasn't writing to. A new test shows a bug where we wouldn't
re-sync the state properly after a clear.

Also adds more pretty printing for GLColor.

Bug: angleproject:2872
Change-Id: I5485893b5f1b269c5407678db27978a789f7acc6
Reviewed-on: https://chromium-review.googlesource.com/c/1269255
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>

To match behavior of ALOGV in Android system code, disable output
in release builds.

Bug=angleproject:2418

Change-Id: I657ec366249f9d5defe9b05fe298099c47389580
Reviewed-on: https://chromium-review.googlesource.com/c/1269819Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Ian Elliott <ianelliott@google.com>
Commit-Queue: Courtney Goeltzenleuchter <courtneygo@google.com>

If the Vulkan backend is available, use it on Android.
This way ANGLE built for the ANGLE apk always uses Vulkan.
ANGLE built for use in Chrome keeps GL. At least for now.

Bug=angleproject:2418

Change-Id: Ic7796c74821a44b856a596d31b3de09e7ca47ede
Reviewed-on: https://chromium-review.googlesource.com/c/1265504Reviewed-by: Ian Elliott <ianelliott@google.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Yuly Novikov <ynovikov@google.com>
Commit-Queue: Courtney Goeltzenleuchter <courtneygo@google.com>

Some dead code and duplicate data are cleaned up from the compiler.
Several parameters can be accessed directly from ShBuiltInResources
instead of creating a copy in TCompiler.

This also encapsulates some TCompiler member functions as private and
changes the remaining unprefixed TCompiler member variable names to
start with the m prefix.

BUG=angleproject:2068
TEST=angle_unittests

Change-Id: I6690aaf538b17e0f45460660272a21f82f1808a0
Reviewed-on: https://chromium-review.googlesource.com/c/1267503Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>

When EOpIndexDirect/EOpIndexIndirect/EOpIndexDirectStruct/TIntermSwizzle
appear in [] in ssbo access chain, we should transfer the process of them to
OutputHLSL.

For example:
    instance.v[gl_GlobalInvocationID.x] = data;
    // becomes
    float_Store(dx_instance, 0 + 16 * gl_GlobalInvocationID.x, _data);

    instance.v[s.index[0].x] = data;
    // becomes
    float_Store(dx_instance, 0 + 16 * _s.index[0].x, _data);

Bug: angleproject:1951
Change-Id: I333e238400a10a799a6294f8759cf9c4ef2451c8
Reviewed-on: https://chromium-review.googlesource.com/c/1250661Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jiajia Qin <jiajia.qin@intel.com>

This patch implements translating textureGather[Offset] into HLSL
when the sampler is a shadow sampler. The related HLSL function
should be GatherCmp().

According to the definition of textureGatherOffset():
([ESSL 3.1] Chapter 8.9.3 Page 138)
- gvec4 textureGatherOffset(gsampler2D sampler, vec2 P,
  ivec2 offset, [,int comp])
- vec4 textureGatherOffset(sampler2DShadow sampler, vec2 P,
  float refZ, ivec2 offset)
We need to add parameter "refZ" before "offset" when the sampler
is a shadow sampler.

Bug: angleproject:2826
Test: dEQP-GLES31.functional.texture.gather.basic.2d.depth32f.*
     dEQP-GLES31.functional.texture.gather.basic.2d_array.depth32f.*
     dEQP-GLES31.functional.texture.gather.basic.cube.depth32f.*
     dEQP-GLES31.functional.texture.gather.offset.min_required_offset.2d.depth32f.*
     dEQP-GLES31.functional.texture.gather.offset.min_required_offset.2d_array.depth32f.*
     dEQP-GLES31.functional.texture.gather.offset.implementation_offset.2d.depth32f.*
     dEQP-GLES31.functional.texture.gather.offset.implementation_offset.2d_array.depth32f.*

Change-Id: I9a7d095dd3cfa41aaefd14d012ed1f309abfc6d5
Reviewed-on: https://chromium-review.googlesource.com/c/1244081
Commit-Queue: Jiawei Shao <jiawei.shao@intel.com>
Reviewed-by: Jiajia Qin <jiajia.qin@intel.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>

Bug: angleproject:2567

Change-Id: Ia7dfa54f7201866b9d7c0ce5d9cccae06c785542
Reviewed-on: https://chromium-review.googlesource.com/c/1265500Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Yuly Novikov <ynovikov@google.com>
Commit-Queue: Yuly Novikov <ynovikov@google.com>

The default framebuffer is initialized with just one drawbuffer slot
so the number of drawbuffers needs to be validated before checking if
a buffer is attached.

BUG=angleproject:2831
TEST=angle_end2end_tests

Change-Id: I960c39357853d1cd4575b06a992cff33223ab3df
Reviewed-on: https://chromium-review.googlesource.com/c/1264518
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
Reviewed-by: Geoff Lang <geofflang@chromium.org>

Example failure:
https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/Mac%20FYI%20Experimental%20Retina%20Release%20(NVIDIA)/2115

BUG=angleproject:1085

Change-Id: Ifc07282b7ca586bd6346831e08cee963c9eaab54
Reviewed-on: https://chromium-review.googlesource.com/c/1263903Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Geoff Lang <geofflang@chromium.org>

Adds explicit error handling to a few scoped state handler classes.
Otherwise mostly mechanical refactoring.

Bug: angleproject:2753
Change-Id: I2bf969a68f45880902b6e7902297c1340a76a1c4
Reviewed-on: https://chromium-review.googlesource.com/c/1255647Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

Using x = {}; before filling out each field, we can be sure any missing
field is 0 initialized.  This in turn helps us not have to specify
certain fields that are generally unused (at the moment), such
as pNext.

Bug: angleproject:2860
Change-Id: Ia1fa2db3ecfb316673a02ac0c5e13e47e055a19f
Reviewed-on: https://chromium-review.googlesource.com/c/1259764Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>

Correctly sized void arrays can be needed after parsing has recovered
from an error and the code is trying to evaluate the constant value of
a node. Since now we just have a generic EOpConstruct op instead of
different ops for different types, we can simply remove the special
handling for void arrays in CreateZeroNode to create the arrays in the
correct size.

BUG=chromium:890581
TEST=angle_unittests

Change-Id: I48d96c9ef1d695cd8583a845fd4bd24a7aaf535c
Reviewed-on: https://chromium-review.googlesource.com/c/1264515Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>

Bug: angleproject:2491
Change-Id: Ief728b9c50ee2e1925a9b286c52c8ccda6b14fd2
Reviewed-on: https://chromium-review.googlesource.com/c/1255646
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Yuly Novikov <ynovikov@google.com>
Reviewed-by: Frank Henigman <fjhenigman@chromium.org>

Instead of returning a small struct from LinkProgram calls we use
angle::Result. Linking can have 3 cases:

- the link was successful -> angle::Result::Continue
- the link failed -> angle::Result::Incomplete
- there was an internal error -> angle::Result::Stop

Note that any unexpected Incomplete is still an error. Each function
that accepts Incomplete must check explicitly.

This is the last user of ErrorOrResult.

Bug: angleproject:2491
Change-Id: Idba23be27efe4b561720a4bdd8fe486b40779497
Reviewed-on: https://chromium-review.googlesource.com/c/1255645
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Yuly Novikov <ynovikov@google.com>

This adds GLES3 API support for EXT_blend_func_extended. The patch
includes the API entrypoints, validation and also implementation on
the desktop GL backend.

Instead of having built-in fragment color variables, ESSL 3.00 has
custom output variables, which can now be bound to either primary or
secondary output color locations. The "index" set to a custom output
variable determines whether it's used a primary or secondary blending
source color.

The shader layout qualifier takes precedence over the bind call. This
is not specified in the EXT spec, but is specified in desktop OpenGL
specs.

BUG=angleproject:1085
TEST=angle_end2end_tests

Change-Id: Ia24e8e5dadcc165e5e8fbd7c653c7fab6217db88
Reviewed-on: https://chromium-review.googlesource.com/c/1249361
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
Reviewed-by: Geoff Lang <geofflang@chromium.org>

This saves a lot of extra work when updating a Texture.

Bug: angleproject:2763
Change-Id: I87e310ef4f847713123bd24711e1166949ff95d2
Reviewed-on: https://chromium-review.googlesource.com/c/1254043Reviewed-by: Yuly Novikov <ynovikov@google.com>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

Instead of deferring this work, we can process it immediately. We have
access to the information we need in the prior and current states so
can optimize the update more effectively.

Bug: angleproject:2763
Change-Id: I77482b0ea490fddf403ccc4a4f32665301fd6e7a
Reviewed-on: https://chromium-review.googlesource.com/c/1254042Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

BUG=angleproject:2867

Change-Id: Ie14848bb464eea7f84d0ce523dff2cddf7a185d4
Reviewed-on: https://chromium-review.googlesource.com/c/1260256Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Frank Henigman <fjhenigman@chromium.org>

An incorrect validation is preventing work on queries:

https://github.com/KhronosGroup/Vulkan-ValidationLayers/issues/269

Bug: angleproject:2855
Change-Id: I0454b74f714e69efcfa56e42ff751ffffacaf78c
Reviewed-on: https://chromium-review.googlesource.com/c/1258085Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>

In CL #1207216, the #include in blit11 and shader file name had
capitilization mismatches, which caused a clang error. This fixes the
issue.

Bug: angleproject:2762
Change-Id: I4760843beedaabfb83228e40289efaa6a767dec3
Reviewed-on: https://chromium-review.googlesource.com/c/1262017
Commit-Queue: Brandon1 Jones <brandon1.jones@intel.com>
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>

Adds copyTexture3DANGLE and copySubTexture3DANGLE that adds copy
operations on volumetric textures.

Bug: angleproject:2762
Test: angle_end2end_tests

Change-Id: I0076989c2b7ed69abfc73143c325065bdb06a360
Reviewed-on: https://chromium-review.googlesource.com/c/1207216
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>

DEBUG was useful for developing and turning on the code, but it's too
verbose to be used with the Android Q release.

Bug: angleproject:2794
Change-Id: I092567c25414cbba7f36ab94e191b1dcfe39fbcb
Reviewed-on: https://chromium-review.googlesource.com/c/1260102
Commit-Queue: Ian Elliott <ianelliott@google.com>
Reviewed-by: Courtney Goeltzenleuchter <courtneygo@google.com>

Only gl::LinkResult remains.

Bug: angleproject:2753
Change-Id: I5e9c68c11453e8ab9db4908451957d7b3db0b110
Reviewed-on: https://chromium-review.googlesource.com/c/1254044Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Frank Henigman <fjhenigman@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

This hides the logic for manipulating the current layout and barriers
into the image helper. This will make it easier to implement implicit
pipeline barriers. It allows us to remove the updateLayout() hack.

Bug: angleproject:2828
Change-Id: I3e59872e66064e6b105c1f398b4212fb3a6be1a7
Reviewed-on: https://chromium-review.googlesource.com/1255506
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>

This makes the vk::CommandBuffer class closer to an auto-generated
wrapper class.

Bug: angleproject:2828
Change-Id: I91ba03914a60d5612707dd240fcda25b86cf2c46
Reviewed-on: https://chromium-review.googlesource.com/1255505
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>

This is needed to pass dEQP conformance. Several of the harder dEQP
tests around this behaviour are excluded from the mustpass list. This
is presumably because the behaviours weren't implemented portably.
Nevertheless we need to support conformant behaviour for GLES 2.0
Contexts for the most simple uses.

This also leaves the error behaviour intact for WebGL specs.

Bug: angleproject:1335
Change-Id: Ia80b4f71475efa928488ee6c2ee35c566d4602d4
Reviewed-on: https://chromium-review.googlesource.com/c/1242013Reviewed-by: Olli Etuaho <oetuaho@nvidia.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

Generate GL_RGB565 internal format configs for Android VK. This allows
apps requesting such formats to map to the appropriate corresponding
Android internal pixel format.

Bug: angleproject:2863
Change-Id: I18f119d6554a601037a40db27234bf33e0ada438
Reviewed-on: https://chromium-review.googlesource.com/c/1258083
Commit-Queue: Tobin Ehlis <tobine@google.com>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>

This changes the program query to resolve the link if required. If the
validation layer is skipped the link is resolved in the gl::Context.
Resolving the link on program query allows us to avoid resolving the
link on most of the gl::Program query APIs.

This improves inlining and particularly affects uniform update. It
fixes a performance regression introduced by the parallel shader
linking extension. Gives a 17% increased score on a uniform benchmark.

Also fixes two missing cases of checking for the extension in our
validation code.

Note that some bugs might still exist when the validation layer is
disabled.

Bug: angleproject:2851
Change-Id: I5d725eede3fa147cedf2ce0129791b3412a97a61
Reviewed-on: https://chromium-review.googlesource.com/1255509
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Yuly Novikov <ynovikov@google.com>

This cleans up the code slightly and removes a few if checks.
Also fixes a potential edge case with ProgramBinary called on a program
that is in-use.

Bug: angleproject:2763
Change-Id: Ibe0ab20ed44f593bb6c2b0612871680a7df1a15f
Reviewed-on: https://chromium-review.googlesource.com/1254041Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Yuly Novikov <ynovikov@google.com>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

Dot files are a graph format that can be visualized with GraphViz.
Giving a small visualization output can help diagnose problems with
the graph. For example extra edges or incorrect dependencies.

Bug: angleproject:2379
Change-Id: I544cba11c5e33579b06fef2fb41bad60066a64e4
Reviewed-on: https://chromium-review.googlesource.com/1254383
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Tobin Ehlis <tobine@google.com>

This enum was validated but not implemented.

TEST=RequestExtensionTest.Queries

BUG=890689

Change-Id: I7285e45cef53b197d61cd0dfa9d2bacb70e23e64
Reviewed-on: https://chromium-review.googlesource.com/1255142Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Yuly Novikov <ynovikov@google.com>
Commit-Queue: Geoff Lang <geofflang@chromium.org>

This fixes format support tables in formatutils.cpp and formatutilsgl.cpp
to conform to the core and extension GLES specs,
for a large portion of the formats.
ExtsOnly SupportRequirement was enhanced to accept multiple sets of extensions.
Format is supported if all the extensions in one of the sets are available.

Also fixes determining support for extensions based on those formats.

And some fixes to tests which fail due to more strict format support.

Bug: angleproject:2567

Change-Id: I6050fff9c597f658fdcea2477bff59a603cdb7e8
Reviewed-on: https://chromium-review.googlesource.com/1105612Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Yuly Novikov <ynovikov@google.com>