This general enum can encapsulate different formats between
GL/Vulkan/D3D9/D3D11/etc so we can use them in common routines like
PackPixels. It also can help us get rid of the ANGLEX enums which
we use to represent internal formats not present in GL.

It is currently used for Textures/Renderbuffers/Surfaces, but can
also be extended in the future to cover things like vertex formats.
It mirrors something like a DXGI_FORMAT in D3D11 or VkFormat.

BUG=angleproject:1455

Change-Id: I467d7b36d8fc92bb45239d56b9243d06f4e29378
Reviewed-on: https://chromium-review.googlesource.com/365413Reviewed-by: Zhenyao Mo <zmo@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

This call is a no-op. The shader parser is intended to almost always
recover from errors, so including it doesn't clarify the code either.
It's simpler to remove it entirely.

BUG=angleproject:911
TEST=angle_unittests

Change-Id: I0feae097c2807c8e9559672e7a3d50a2fc4fbdea
Reviewed-on: https://chromium-review.googlesource.com/367040
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>

Support is added for the compute shader special variables given in
OpenGL GLSL ES 3.1 Revision 4, 7.1.3 Compute Shader Special Variables.
Unit tests are added for legal and illegal usage of the special
variables.

BUG=angleproject:1442

TEST=angle_unittests

Change-Id: Idb25811c15c4044c55c611c0e73ef26eb5b3e9d7
Reviewed-on: https://chromium-review.googlesource.com/366661
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>

Support is added for compute shader compilation. There is a small
extension to the parser so that 'local_size_x = ', 'local_size_y = '
and 'local_size_z = ' are supported as layout qualifiers.

A few shader compilation tests are added and one which checks the AST
whether the layout qualifiers are properly parsed.

BUG=angleproject:1442

TEST=angle_unittests
TEST=angle_end2end_tests

Change-Id: I67283797d1cf13fa4ac47faa2a6e66d93a2db867
Reviewed-on: https://chromium-review.googlesource.com/362300Reviewed-by: Olli Etuaho <oetuaho@nvidia.com>
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>

This CL stores the d3d11::TextureFormat by reference in the texture
storage. Adding the internalFormat to the TextureFormat allows us
to store a single ref instead of three per TextureStorage11.

Also store the format sets in a d3d11::TextureFormat by-ref instead
of by-pointer, making the code a bit cleaner.

BUG=angleproject:1455

Change-Id: I3c0e966d948c694435577d7d45dc0cd156480cdb
Reviewed-on: https://chromium-review.googlesource.com/365412Reviewed-by: Olli Etuaho <oetuaho@nvidia.com>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

Previously we were just dumping any unexpected errors here. Fix this
by passing in the RT explicitly in the constructor, although we still
store the EGLImage pointer in case the RT changes.

BUG=angleproject:1455

Change-Id: Ie4d4a07c3a7b3a5ccc0a43c4e80bfc6ee43a676b
Reviewed-on: https://chromium-review.googlesource.com/365411Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

It's better to maintain the code outside of a generator script. It
gives easier formatting and updating.

BUG=angleproject:1455

Change-Id: I2b4383f1ed01545004de10024d03879201e2bf41
Reviewed-on: https://chromium-review.googlesource.com/365410Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

This mirrors https://codereview.chromium.org/2206973002

BUG=628823

Change-Id: Ifd71d67df174cac3f90097c809fc91046699bed8
Reviewed-on: https://chromium-review.googlesource.com/366790Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>

This will let us use ANGLE formats to describe a format layout rather
than a Renderer-specific usage. This in turn will let us use ANGLE
formats for other Renderers, as a universal thing.

BUG=angleproject:1455

Change-Id: I56492cb809d4ef6ac4b962cb12affbc853bbdaa0
Reviewed-on: https://chromium-review.googlesource.com/365269Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

Some warnings were enabled only in standalone builds. Enabling them in
the GN config will prevent standalone build breakage and also make
some potentially harmful warnings more visible to non-Windows devs.

BUG=angleproject:1449

Change-Id: I11fe9bac957864d37af37b3860a22fcbd91946ac
Reviewed-on: https://chromium-review.googlesource.com/360961Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Olli Etuaho <oetuaho@nvidia.com>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

BUG=angleproject:1442

Change-Id: I07b32d4c1f1a95f136bf922e78053e0de41c1633
Reviewed-on: https://chromium-review.googlesource.com/366083Reviewed-by: Geoff Lang <geofflang@chromium.org>

BUG=None

Change-Id: Ia2b59916ebb0de5a09c1f039200d6c8885dd294c
Reviewed-on: https://chromium-review.googlesource.com/365940Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

BUG=

Change-Id: I1cdaa61fa00cc418b3c0b4d9e8270e780ff0d8a6
Reviewed-on: https://chromium-review.googlesource.com/365737Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>

The patch adds all shader built-in constants.

BUG=angleproject:1442

TEST=angle_unittests
TEST=angle_end2end_tests

Change-Id: I81cae479d6506a8faa2dce023d5fcc2c1291d521
Reviewed-on: https://chromium-review.googlesource.com/364460Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>

Introduce an AST traverser that can move the evaluation of certain
types of loop conditions and loop expressions inside the loop. This
way subsequent AST transformations don't have to worry about cases
where they have to insert new statements to implement a loop condition
or expression.

This includes the revert of "Unfold short-circuiting operators in loop
conditions correctly". The new traverser covers the loop cases that
used to be handled in UnfoldShortCircuitToIf.

BUG=angleproject:1465
TEST=WebGL conformance tests,
     dEQP-GLES2.functional.shaders.*select_iteration_count*

Change-Id: I88e50e007e924d5884a217117690ac7fa2f96d38
Reviewed-on: https://chromium-review.googlesource.com/362570Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>

The newly added capability constants are handled in the corresponding
glGet functions. Also, getBooleani_v has been added.

BUG=angleproject:1442

TEST=angle_deqp_gtest_gles31_tests
--gtest_filter=*functional_state_query_integer_max_*
TEST=angle_deqp_gtest_gles31_tests
--gtest_filter=*state_query_indexed_max_compute_work_group_size*
TEST=angle_unittests
TEST=angle_end2end_tests

Change-Id: I846e006307563ae81d8b6c62cf261417e15186c7
Reviewed-on: https://chromium-review.googlesource.com/362270Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>

BUG=angleproject:1462

Change-Id: Ifdd714e2bc1f0a184f63f8ef162facce5286e935
Reviewed-on: https://chromium-review.googlesource.com/365233Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>

BUG=angleproject:1356

Change-Id: I70246762411dbeeb3e291e317854139a68d80070
Reviewed-on: https://chromium-review.googlesource.com/339434Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Geoff Lang <geofflang@chromium.org>

BUG=angleproject:1462

Change-Id: I549692583bbf35edc4e383f8fb7e0dff17c28594
Reviewed-on: https://chromium-review.googlesource.com/365234Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>

This will make applications aware of device loss on all EGL calls that
need to have an initialized display. For that purpose, we track the
device loss state at the egl::Display level instead of always querying
the implementation. This is correct because at device-loss at the
display level is non-recoverable. It also deduplicates the tracking
that would have to be done in all the EGL backends.

Changes made in this commit:
 - Cached device loss in egl::Display
 - Check isDeviceLost in ValidateDisplay
 - Changed EGL entry-points testing isDeviceLost to explicitely request
   a testDeviceLost
 - Add calls to ValidateDisplay to entry-points missing it
 - Removed unused virtual qualifiers for some robustness methods

BUG=angleproject:1463

Change-Id: I92bea81f2ecd5423c445cff31557a4d9783557d5
Reviewed-on: https://chromium-review.googlesource.com/365450Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>

This special format means we're using a depth/stencil format with only
the stencil channel being used. We can just use a normal D24S8 format
here, there's pretty much no difference.

BUG=angleproject:1455

Change-Id: Id304094b92814f38930209a703733190ad8e8410
Reviewed-on: https://chromium-review.googlesource.com/359086Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

The only difference between the NONRENDERABLE and normal versions of
the formats is the rtvFormat is blank for non-renderable. The only
place that I can see we check rtvFormat to make a decision is in
TextureStorage11::GetTextureBindFlags. The rtvFormat here isn't
necessary because we also check the 'renderTarget' flag, which won't
be true for compressed formats at any time.

BUG=angleproject:1455

Change-Id: Icbb438d336e67b80c44a0ab8de995a32b92e451e
Reviewed-on: https://chromium-review.googlesource.com/359085Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

This should make insertion much faster, which will improve the speed
of many BindBuffer calls.

BUG=angleproject:1458

Change-Id: I3f7ebc02cc481257be8b84773506b9ac9e3be677
Reviewed-on: https://chromium-review.googlesource.com/364221Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

This saves us looking up the FormatSet repeatedly.

BUG=angleproject:1455

Change-Id: I77890c1eb427e7d087ceaf194a5001b8b03585d4
Reviewed-on: https://chromium-review.googlesource.com/359084Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

BUG=621031

Change-Id: Ib4cdd88ecd58f617813a91379a8b8b518fba149b
Reviewed-on: https://chromium-review.googlesource.com/364910Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>

For some nested pow expressions, queueing two node replacements in the
same tree traversal would mangle tree, resulting in invalid code. Fix
this by iterating over the tree until no replacements are found, and
doing one replacement each iteration.

BUG=angleproject:851

Change-Id: Ie08ab23f4bfe3d5f32726856afc61ff1f3d6c789
Reviewed-on: https://chromium-review.googlesource.com/365400Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

BUG=angleproject:1298

Change-Id: Ibfbad8eb8ec824e377d8c1746a6691d6b689f498
Reviewed-on: https://chromium-review.googlesource.com/362601Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Geoff Lang <geofflang@chromium.org>

Entry points were generated using scripts which take the
new function declarations from gl31.h, find the newly added functions
and output the new function declarations and defitions.

BUG=angleproject:1442
TEST=angle_unittests

Change-Id: I2d77eb4cc24873a31cb2745b7b82bf611d5058c6
Reviewed-on: https://chromium-review.googlesource.com/361291Reviewed-by: Olli Etuaho <oetuaho@nvidia.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>

BUG=angleproject:851

Change-Id: I50c3b3a4f00b27fed85f09509738513a441c7b5b
Reviewed-on: https://chromium-review.googlesource.com/363990Reviewed-by: Olli Etuaho <oetuaho@nvidia.com>
Reviewed-by: Zhenyao Mo <zmo@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

This is a simpler and more portable design. Thanks for Austin from MS.

BUG=angleproject:1452

Change-Id: I93e8f3fc61107f13c4b2c1cf7fbaf2bb7ccdfafb
Reviewed-on: https://chromium-review.googlesource.com/363041Reviewed-by: Austin Kinross <aukinros@microsoft.com>
Reviewed-by: Zhenyao Mo <zmo@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

Entry points were outside of the extern C block.

Change-Id: Ifbd159c59b850a90f728db9027c485661aa96bc8
Reviewed-on: https://chromium-review.googlesource.com/361720Reviewed-by: Olli Etuaho <oetuaho@nvidia.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>

ANGLE D3D11 uses a geometry shader to expand points into quads.
This led to an edge case with gl_PointCoord. When the user references
gl_PointCoord in the fragment shader but renders with GL_TRIANGLES or
other non-point primitives, gl_PointCoord is undefined, but ANGLE
would produce a link error. This would break some very odd edge-case
shaders (e.g. a shader that is used with both points and triangles).

We can fix this by simply adding a dummy PointCoord value to our
vertex shader is all cases. If the user renders points, we ignore the
PointCoord value passed to the geometry shader. If they render tris
or lines and use PointCoord, the shader signatures will match, and
PointCoord will even have a sane value of (0.5, 0.5).

BUG=angleproject:1380

Change-Id: I322155cd3801d0241cabc9bb639a5aaa502831b3
Reviewed-on: https://chromium-review.googlesource.com/362779
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Zhenyao Mo <zmo@chromium.org>
Commit-Queue: Zhenyao Mo <zmo@chromium.org>

Since the newer driver versions are required for WebGL 2 conformance,
we need a solution that can detect a driver version to know if we
should apply the workaround.

Use a modified copy of Chrome's Windows GPU driver detection code.
In the future we should extend this to a full module when we port
the command buffer workarounds.

BUG=angleproject:1452

Change-Id: I783d5726454671cc22585a2bf990c071d539aa9f
Reviewed-on: https://chromium-review.googlesource.com/361962Reviewed-by: Zhenyao Mo <zmo@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

BUG=angleproject:851

Change-Id: I68a47b8343a29e42c0a69ca3f2a6cb5054d03782
Reviewed-on: https://chromium-review.googlesource.com/362775Reviewed-by: Zhenyao Mo <zmo@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

This one was in a different blit function.

BUG=angleproject:1246

Change-Id: Ib571c10ddc30b3293f5c0d6bdb357b4cd3b52579
Reviewed-on: https://chromium-review.googlesource.com/362774Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Zhenyao Mo <zmo@chromium.org>

This introduced a flaky failure to the multisample resolve blit tests.
They would work sometimes if the state had set the correct viewport
previously, so it wasn't always evident there was a bug.

BUG=angleproject:1246

Change-Id: If16d574fb87484fcdc9b7cc6ecc0531ee4a8959d
Reviewed-on: https://chromium-review.googlesource.com/362699Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Zhenyao Mo <zmo@chromium.org>

If the GL_EXT_draw_buffers extension isn't explicitly enabled in the shader,
then gl_FragData is an array of size 1, not of size max_draw_buffers.

BUG=angleproject:1441
TEST=webgl2_conformance with --use-gl=angle

Change-Id: I2ead1457462bf1f396fda1f47022df6b54612e17
Reviewed-on: https://chromium-review.googlesource.com/362781Reviewed-by: Zhenyao Mo <zmo@chromium.org>
Commit-Queue: Zhenyao Mo <zmo@chromium.org>

Introduced in https://chromium-review.googlesource.com/362641
Eventually we'll switch to using the same sets of warnings
for standalone and GN ANGLE.

BUG=angleproject:1441

Change-Id: I6534b9f85b952ddf1d953342cf9c8ddc5de6614e
Reviewed-on: https://chromium-review.googlesource.com/362780Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

Now that we preserve the sized-ness information, we can validate
CopyTexSubImage and related methods correctly.

Fixed a lot of WebGL 2 tests when using ANGLE.

BUG=angleproject:1228

Change-Id: I959322c0a9bb16a2f16d60dce7cd1e63ca95b45a
Reviewed-on: https://chromium-review.googlesource.com/362618Reviewed-by: Zhenyao Mo <zmo@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

This has a few advantages: it preserves all the information of the
internal format, such as if it is sized or unsized. It also saves
looking up the format multiple times in the table, which should
improve speed in some cases.

The extra sized-ness information will allow us to perform the
correct validation in CopyTexSubImage calls.

BUG=angleproject:1228

Change-Id: I42954771b0a9a968f5d787b8cf6e0af721791855
Reviewed-on: https://chromium-review.googlesource.com/362626Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>