Without DXGI, EnumDisplayDevices is the only way to get the
primary device. Previously the code would work on most configs
with a combination of AMD, Intel and NVIDIA GPUs but would fail
on more esoteric system. Like our try bots that have Matrox GPUs.

BUG=angleproject:1874
BUG=angleproject:2137

Change-Id: Ie2dfbb559001ccad2fd5b8a8fd6436e0fba9d003
Reviewed-on: https://chromium-review.googlesource.com/651629Reviewed-by: Geoff Lang <geofflang@chromium.org>

This would drastically slow down some framebuffer updates.

BUG=angleproject:1155

Change-Id: Ibff428c49bd5127a101bce46cc1df355f4542ccf
Reviewed-on: https://chromium-review.googlesource.com/649986
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>

This allows the dirty objects to notify the context if something
needs to be communicated down to the ContextImpl. In this case it
means a dirty Texture can notify the Context that it needs to re-apply
texture bindings.

BUG=angleproject:1387

Change-Id: I162115e51112d1c27c0dab621d1b3d14446af96d
Reviewed-on: https://chromium-review.googlesource.com/648052Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

Discovered some of these while investigating Texture dirty bits.

BUG=angleproject:1387

Change-Id: I8b170462bfd283e4b0f9d47b7f7ddbaa7957914d
Reviewed-on: https://chromium-review.googlesource.com/648051Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

BUG=angleproject:2122

Change-Id: I99eed52b1f12004f0bab3f94bd3acddda8dafd69
Reviewed-on: https://chromium-review.googlesource.com/650526Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>

This change adds GL_KHR_robust_buffer_access_behavior support.
The old change is in https://chromium-review.googlesource.com/c/angle/angle/+/607413

BUG=755897, angleproject:1393, angleproject:1463

Change-Id: I04a1132c3ae8d3a766194df61c4ff7bf0b084f03
Reviewed-on: https://chromium-review.googlesource.com/640750
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>

A branch is added in the geometry shader to select either the
viewport, or texture layer which is being rendered to based on the
value of a uniform in the driver constant buffer. Using this approach
there is no need for separate programs for side-by-side and layered
rendering.

BUG=angleproject:2062
TEST=angle_end2end_tests

Change-Id: I66701164ff02a851c13695d5409f8ad350534e69
Reviewed-on: https://chromium-review.googlesource.com/645547
Commit-Queue: Martin Radev <mradev@nvidia.com>
Reviewed-by: Olli Etuaho <oetuaho@nvidia.com>

We're removing this bot as redundant now in Chromium.

Change-Id: I35f00bff4e62780609f869c447839aa48b74b46c
R: jmadill@chromium.org
Bug: crbug.com/743212
Reviewed-on: https://chromium-review.googlesource.com/648654Reviewed-by: Jamie Madill <jmadill@chromium.org>

BUG=angleproject:1671
Change-Id: I58dd30d0aaffd1a776aa14a04011cbdd72181bf2
Reviewed-on: https://chromium-review.googlesource.com/648356
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>

BUG=angleproject:1387

Change-Id: If3fc67f99716b2e5e6a8b0ffd139a07a06cdcab8
Reviewed-on: https://chromium-review.googlesource.com/648050Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

Uses more of the type info table for updates.
Also special-case clamping when uniform count == 1.

Improves the speed of the d3d11 uniform stress test by ~20%.

BUG=angleproject:1390

Change-Id: I6707c67db84c94a28b1519b0bbee5d28fe38b189
Reviewed-on: https://chromium-review.googlesource.com/646828Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

BUG=2122

Change-Id: I82bed7215142b62b321c9676972386b74a9efa92
Reviewed-on: https://chromium-review.googlesource.com/604211
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>

A code-gen bug was found in 15.3.2 (VC++ 2017 Update 3.2) that causes
test failures due to one loop being skipped. Attempts to disable
optimizations for just the affected function failed so optimizations
must be disabled at the end of the source file, which seems to cause all
template functions and compiler generated functions to have
optimizations disabled. A VS bug has been filed and cross-linked.

BUG=759402

Change-Id: Ida765a47234a63bad48e6a4e910f3b82919d6be9
Reviewed-on: https://chromium-review.googlesource.com/647313Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Geoff Lang <geofflang@chromium.org>

Currently most uniform type info is determined by switching on the
uniform type. Some values are computed from other values, which can
result in three or more switch statements plus some multiplies or
other math. This patch attempts to improve the speed by pre computing
necessary values into constant static tables.

Improves performance by about 7% in a uniform stress test.

BUG=angleproject:1390

Change-Id: I29bef259a17f6d6536171ade4950e2d712bfd39c
Reviewed-on: https://chromium-review.googlesource.com/643791Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

BUG=angleproject:1651

Change-Id: I13c1a669d83098e22c0d7fb003d13beacc20c4ae
Reviewed-on: https://chromium-review.googlesource.com/623947Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
Commit-Queue: Geoff Lang <geofflang@chromium.org>

This prepares for accepting arbitrary expressions as the "this" node
of the array length method.

BUG=angleproject:2142
TEST=angle_unittests

Change-Id: I728adb6e76d2779dedbabfaeec7d096872e0d00d
Reviewed-on: https://chromium-review.googlesource.com/633945Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>

This simplifies uniform management in D3D11. It will also facilitate
further optimizations.

Improves performance in a uniforms stress test by ~13% on a test
machine. (UniformsBenchmark.Run/d3d11_null_400_vec4)

BUG=angleproject:1390

Change-Id: Iba2c15d420396aa8fb4e8c451cba2b4dde7b4b77
Reviewed-on: https://chromium-review.googlesource.com/623930Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

This migrates to the new generation style used in GLES2.

BUG=angleproject:1309

Change-Id: I43e9d33a0d7c5b1786452895855ff2bfbf82f139
Reviewed-on: https://chromium-review.googlesource.com/638311Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

BUG=None

Change-Id: I915c99f21dc879a8e63955cd6a3dd892d05bbf5f
Reviewed-on: https://chromium-review.googlesource.com/646590Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

This moves the uniform query to the back-end. In D3D, this requires
a bit more redesign, especially for matrix uniforms.

Gives about a 10% speed improvement in the GL/NULL uniforms stress
test on Windows (UniformsBenchmark.Run/gl_null_400_vec4).

BUG=angleproject:1390

Change-Id: Idac22a77118e9e94d2f28c585e31ff0bc785ba94
Reviewed-on: https://chromium-review.googlesource.com/623929
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>

Non-existent XFB varyings with the gl_ prefix used to pass linking on
the D3D11 backend. On a debug build they would cause an assert. Fix
these issues.

BUG=angleproject:2141
TEST=angle_end2end_tests

Change-Id: Iecc3d03823d02700d6b28c44d77df7a2f9e70a5b
Reviewed-on: https://chromium-review.googlesource.com/645747Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>

The prefix is unnecessary now that user-defined names are prefixed in
both GLSL and HLSL output. Removing the prefix makes compiler output
a bit simpler to read.

BUG=angleproject:2038
TEST=angle_unittests

Change-Id: I9ffc508f50d6146a2d85798875c88e2c385b83fe
Reviewed-on: https://chromium-review.googlesource.com/508730Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>

BUG=602737

Change-Id: I8c24985358dcd297cb437c501b7a3944e36d98de
Reviewed-on: https://chromium-review.googlesource.com/644210Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>

The patch adds D3D11 as a testable platform to the multiview performance
tests.

BUG=angleproject:2062
TEST=angle_perftests

Change-Id: I2266073860fd53f546ce9a414bc343b582c77f70
Reviewed-on: https://chromium-review.googlesource.com/645849Reviewed-by: Olli Etuaho <oetuaho@nvidia.com>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>

Now user-defined names are prefixed by _u in GLSL output in case name
hashing is not on. Internal names such as names of temporary variables
created in AST transformations are written out as such.

This makes handling of internal function names and internal variable
names consistent. It also removes the possibility of name conflicts
between user-defined names and internal names in case name hashing is
not on. In the same vein, it makes it safe to use GLSL reserved words
that are not reserved in ESSL as variable names in case name hashing
is not on.

This also makes the GLSL output more consistent with how names are
handled in HLSL output. Name hashing code is shared between
VariableInfo and OutputGLSLBase to ensure names are handled
consistently in both. The name that's used in the shader source for a
given interface variable is written out to ShaderVariable::mappedName.

An exception needs to be made for identifiers close to the length
limit, since adding any prefix would take them over the limit. But
they can be just written out as such, since we don't have any builtins
or ANGLE internal variables that have as long names and could create a
conflict.

BUG=angleproject:2139
BUG=angleproject:2038
TEST=angle_unittests, angle_end2end_tests, WebGL conformance tests

Change-Id: Id6ed052c4fab2d091227dc9a3668083053b67a38
Reviewed-on: https://chromium-review.googlesource.com/507647
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>

Because the ANGLE_multiview extension uses instancing to multiply
geometry for each view, Draw* calls with an active multiview program
have to be handled in the follwing way:
1) Convert non-instanced Draw calls to their instanced versions.
2) Multiply the number of instances in an instanced Draw call by the
number of views.
The patch also applies the viewport offsets to the viewport and scissor
rectangle and propagates the computed viewports and scissors to the
D3D11 runtime.

BUG=angleproject:2062
TEST=angle_end2end_tests

Change-Id: I8b4295c95c2cc0c1046c67e1fb1a782a46703292
Reviewed-on: https://chromium-review.googlesource.com/618331
Commit-Queue: Martin Radev <mradev@nvidia.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>

Relinking the active program can change its number of views and the
state has to be correspondingly adjusted.

BUG=angleproject:2062
TEST=angle_end2end_tests

Change-Id: I20102a428d7566a8cec5d81eeaa55980665812f4
Reviewed-on: https://chromium-review.googlesource.com/637994
Commit-Queue: Martin Radev <mradev@nvidia.com>
Reviewed-by: Olli Etuaho <oetuaho@nvidia.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>

In some cases, when the app would call glBufferSubData to do a small
data update in an existing vertex buffer, the sync code would not
flush out the data to the native D3D11 buffer from the temporary
staging buffer.

Fix this problem by notifying the VertexArray11 class when buffer
data is updated. Note that in the future we can improve this by
using a different update notification for when the buffer data changes
and when the underlying storage changes. For now take a very broad
approach.

BUG=angleproject:1156

Change-Id: I2e0fabc97c1f1d5a14d609247e61c602e9a5a85f
Reviewed-on: https://chromium-review.googlesource.com/644208Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

Lots of incidental fixes to formatting and naming.
Adds specific default return type overloads for ClientWaitSync and
GetUniformBlockIndex.

BUG=angleproject:1309

Change-Id: Id67cbc0b19fc2cb94c859ab8390f1ff36b1bbd25
Reviewed-on: https://chromium-review.googlesource.com/637203Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

This patch intends to fix a compile error in ANGLE GLSL compiler when
parsing an expression with inputs which has interpolation qualifiers
('flat', 'smooth' and 'centroid').

The compiler should report a compile error when a shader input with
interpolation qualifier is used as a l-value.

BUG=angleproject:2140
TEST=angle_unittests

Change-Id: I7c059d53bf001ac31d34519a98e5289797833ce7
Reviewed-on: https://chromium-review.googlesource.com/640075
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>

The patch fixes an unexposed bug in FramebufferGL which would pass
an incorrect multi-view state to StateManagerGL on texture detachment.
The bug is not exposed because upon a subsequent syncing step the
correct state is queried and restored from the framebuffer state.

BUG=angleproject:2062
TEST=angle_end2end_tests

Change-Id: Ie0e783c53e87497b3673ef87ab9c53c3c04054a7
Reviewed-on: https://chromium-review.googlesource.com/636369
Commit-Queue: Martin Radev <mradev@nvidia.com>
Reviewed-by: Olli Etuaho <oetuaho@nvidia.com>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>

Previously a pixel shader would have gl_ViewID_OVR as input only if it
were used in it. However, in a case with a user-specified varying and no
usage of gl_ViewID_OVR in the pixel shader, a link-time error would
occur whenever the geometry and pixel shaders were to be linked as the
order of parameters in the signatures would not match.
The patch addresses this by always having gl_ViewID_OVR declared as
pixel shader input if the OVR_multiview(2) shader extension is enabled.

The patch does not provide any tests because draw commands are not yet
supported at this stage.

BUG=angleproject:2062
TEST=angle_end2end_tests

Change-Id: Ia154fd53cbf3847cfaf0504e4ec44632b9cd5327
Reviewed-on: https://chromium-review.googlesource.com/641151
Commit-Queue: Martin Radev <mradev@nvidia.com>
Reviewed-by: Olli Etuaho <oetuaho@nvidia.com>
Reviewed-by: Geoff Lang <geofflang@chromium.org>

In some cases we could end up with bufferSubData updates being left
in staging buffers during a draw call. Currently we rely on 
InputLayoutCache::applyVertexBuffers to flush all pending buffer
updates, but this could be done in VertexArray11::syncState, or
even in the draw call sync state.

BUG=angleproject:1156
BUG=chromium:759403

Change-Id: I7019425f874414bf5857b825ddae7e022750c759
Reviewed-on: https://chromium-review.googlesource.com/642057Reviewed-by: Jamie Madill <jmadill@chromium.org>

Adds validation for various cases.

Adds corresponding unit tests.

Change-Id: I9451d286bcf2d6fa32de495e5d0bdec1eb5c955d
Reviewed-on: https://chromium-review.googlesource.com/633157Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

We don't generally test for the default return values of function
calls that have validation errors, but the auto-gen script might
not have been returning things correctly. For GLint values, default to
returning -1 instead of zero.

BUG=angleproject:1309

Change-Id: I736b5a7ef9b50ca1509087fe933c4a4e526531d8
Reviewed-on: https://chromium-review.googlesource.com/636522Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

Assign consistent symbol ids to out base, index and value nodes that
get created in RemoveDynamicIndexing. Some utility functions in
RemoveDynamicIndexing have also now become unnecessary now that there
are better generic helpers and node constructors.

BUG=angleproject:1490
TEST=angle_unittests, angle_end2end_tests

Change-Id: I98891e448b85d51518dbf3156ec93f9661def57e
Reviewed-on: https://chromium-review.googlesource.com/580954Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>

Test case FramebufferTest_ES31.RenderingLimitToDefaultFBOSizeWithNoAttchments
failed on Intel gpu on D3D.

BUG=angleproject:1594

Change-Id: Icda5179513b697b41aeb39bffad23fdb1977b55f
Reviewed-on: https://chromium-review.googlesource.com/637750
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>

Passing invalid arguments to the multi-view end-points should not
generate an error if a texture is being detached from the framebuffer.

BUG=angleproject:2062
TEST=angle_end2end_tests

Change-Id: I22e1ed13b64db046724031d0189612d5e111dcac
Reviewed-on: https://chromium-review.googlesource.com/635166
Commit-Queue: Martin Radev <mradev@nvidia.com>
Reviewed-by: Olli Etuaho <oetuaho@nvidia.com>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>

linkValidateTransformFeedback needs to be run after packing varyings,
since it relies on nonexistent varyings being already handled.

BUG=angleproject:2141
TEST=angle_end2end_tests on debug

Change-Id: I6178348f05a19070a2d17caf90f732df9eb06b9d
Reviewed-on: https://chromium-review.googlesource.com/641152Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>

This will let us remove some of the uniform data management code in
the GL front-end, and simplify the GL back-end. It will also enable
us to implement uniform data more efficiently in the D3D11 back-end,
and probably Vulkan back-end later.

This also implements a new impl method for the ProgramGL class to
flag optimized-out uniforms as no longer used, post-link. This is
important because otherwise the optimized uniforms get assigned
valid locations, and then the getUniform calls are expected to
succeed.

We also use a workaround for uniform value queries for the GL
back-end. It seems as though some drivers (seen on NVIDIA and AMD)
may not properly clamp to the maximum representable integer value
when querying out-of-range floating point values. Work around this by
always calling the driver with the proper type and then casting the
value in ANGLE.

BUG=angleproject:1390

Change-Id: I03dc2382e7af52455c356a2bf3971a4d1bd46ec6
Reviewed-on: https://chromium-review.googlesource.com/616785
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>