This library comes from Chromium's base, and is useful for many use
cases in ANGLE. It can replace the custom MRU code we use in the
RenderStateCache. It will also be useful for implementing a program
binary cache.

BUG=angleproject:2044

Change-Id: Iba166fe380d7ed4e3123428b0227b9d299f756d1
Reviewed-on: https://chromium-review.googlesource.com/516384
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>

The binding point of uniform blocks can be specified in shaders with
this CL. See spec ESSL 3.10, section 4.4.4, page 58 for more info.

dEQP-GLES31.functional.ubo.* still can't completely pass as
the missing of arrays-of-arrays feature. Neither can
dEQP-GLES31.functional.layout_binding.ubo.* due to the incomplete
implementation of program interface APIs.

TEST=angle_end2end_tests:UniformBufferTest
BUG=angleproject:1442

Change-Id: If95d468fc109834a132b9b817730d3fdc3a615da
Reviewed-on: https://chromium-review.googlesource.com/483848
Commit-Queue: Jie A Chen <jie.a.chen@intel.com>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Olli Etuaho <oetuaho@nvidia.com>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>

Initializing globals is done by the DeferGlobalInitializers AST
transformation, which makes sure that the global variable init
proceeds in the correct order. This is important since some global
variables may use other uninitialized globals in their initializers.

The global variable init is only done in case the WebGL shader spec is
being followed. This avoids adding global initializers twice in case
the same shader goes through multiple translations, assuming only one
of them is a WebGL shader translation.

BUG=angleproject:1966
TEST=angle_end2end_tests, WebGL conformance tests

Change-Id: Iea701d3ae40edc906abd87303f2aa27fd23bf55a
Reviewed-on: https://chromium-review.googlesource.com/509689
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>

This was causing a very large performance regression in Texture
re-binding. Instead pass by const &, which should be fine, since
values in std::map (and unordered_map) are not reallocated when the
map changes.

Also make the SharedResource type non-copyable, and add an explicit
makeCopy method for when we need to clone the shared pointer.

BUG=angleproject:2034
BUG=chromium:727318

Change-Id: I39508a6ca4b41e4da31fe68899caa4464138cada
Reviewed-on: https://chromium-review.googlesource.com/517670
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>

Lift some test suppressions for bugs that have been fixed in the
NVIDIA driver a good while ago.

Also improve code style in some suppressions - prefer IsOSX() and
IsLinux() to using ifdefs.

BUG=angleproject:1305
TEST=angle_end2end_tests

Change-Id: Ia069f5b9696000c901956d2952801d5f5c339a11
Reviewed-on: https://chromium-review.googlesource.com/518168Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>

This will allow us to more easily take advantage of Chromium's
MRUCache class.

BUG=angleproject:2044

Change-Id: I3fad82fc825861dc1c2095f25da83159da76e76b
Reviewed-on: https://chromium-review.googlesource.com/517359Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

In some cases we would hash or memcmp against structs with bools or
other non-filled data. This could have implementation differences,
and may have been causing cache errors on Clang.

BUG=chromium:721648
BUG=angleproject:2044

Change-Id: I981a1e6e8d50a33f7fade568497b72b919accfce
Reviewed-on: https://chromium-review.googlesource.com/516383Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

Adds a CPU readback and conversion path when the destination texture is
not renderable.

BUG=angleproject:1932

Change-Id: I71461ca991dc10dd636ff38e1ae20db2be0f8d63
Reviewed-on: https://chromium-review.googlesource.com/508308
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>

Because of the platform refactor in abf38572 we broke the way
the tests override the D3D workarounds for the tiny depth/stencil bug.

This change passes a pointer to the platform directly in the EGL init
logic, which solves this issue. It also removes all decltype code in
the platform header which might fix the UBSAN problem we were seeing
previously.

Also change a present mode selection error into a warning in the Vk
back-end, since this was being triggered on AMD, but is safe.

BUG=angleproject:2042

Change-Id: Ibbd0c69ce11a840cf4b33c616f56020001e553aa
Reviewed-on: https://chromium-review.googlesource.com/513519Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

This cleans up the allocation and deallocation of Blend, DepthStencil,
Rasterizer, and Sampler states.

This patch introduces a LazyResource2 class, basically a replacement
for LazyResource, which will be removed once the refactor is done.

BUG=angleproject:2034

Change-Id: I4fa759ae479807ff69a629f89a08b01800ba3f66
Reviewed-on: https://chromium-review.googlesource.com/503627
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>

Texture attachments need to validate that the attached mip level is within
the [baseLevel,maxLevel] range and that the texture is complete if the
attached mip level is not the base level.

BUG=722684

Change-Id: I859766506b295638572b75a0e2e9fed168be047a
Reviewed-on: https://chromium-review.googlesource.com/506928Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Geoff Lang <geofflang@chromium.org>

Guarantee that local variables are initialized before they are used
in GLSL output. In HLSL output all variables were already being
initialized.

Locals are initialized using an AST transform. The local variable init
can only be run after some simplification of the AST, so that it is
able to handle complex cases like:

for (int i[2], j = i[0]; i[0] < 3; ++i[0]) {
}

If we're dealing with ESSL 1.00 which lacks array constructors, in
this kind of case the uninitialized array initialization code needs to
be hoisted out of the loop init statement, and the code also needs to
make sure that j's initializer is run after i is initialized.

Another complex case involves nameless structs. This can be an issue
also in ESSL 3.00 and above:

for (struct { float f; } s; s.f < 1.0; ++s.f) {
}

Since the struct doesn't have a name, its constructor can not be used.
We solve this by initializing the struct members individually,
similarly to how arrays are initialized in ESSL 1.00.

Initializing local variables is disabled on Mac and Android for now.
On Mac, invalid behavior was exposed in the WebGL 2.0 tests when
enabling it. On Android, the dEQP test runs failed for an unknown
reason. Bugs have been opened to resolve these issues later.

BUG=angleproject:1966
TEST=angle_end2end_tests, WebGL conformance tests

Change-Id: Ic06927f5b6cc9619bc82c647ee966605cd80bab2
Reviewed-on: https://chromium-review.googlesource.com/504728
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>

We now allocate and release all buffer resources from a single place,
allowing us to allocate junk memory, clear on init, and track the
currently allocated buffer memory.

BUG=angleproject:2034

Change-Id: Id60b63a7f77bc369dfc494a7587ab06c8d34a8e2
Reviewed-on: https://chromium-review.googlesource.com/503253Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

Re-land with protection against div-by-zero in samples compatibility
check.

BUG=722684

Change-Id: I3d5c310d1f2cb4d8b92d80492435855c3c4ad807
Reviewed-on: https://chromium-review.googlesource.com/517427Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Geoff Lang <geofflang@chromium.org>

Support is added according to the proposal for WEBGL_multiview. When
the multiview extension is enabled in an ESSL 1.00 shader, num_views
can be specified using a layout qualifier. To support this, enabling
the multiview extension makes "layout" a keyword rather than an
identifier in ESSL 1.00.

The type of gl_ViewID_OVR is also different in case of ESSL 1.00: it
has to be a signed integer, since unsigned integers are not supported
in ESSL 1.00.

Some existing tests for multiview shaders are extended in this patch.
The changes make sure that vertex shader "in" qualifier is still
allowed in ESSL 3.00 multiview shaders, since this patch adds code to
disallow it in ESSL 1.00 multiview shaders.

BUG=angleproject:1669
TEST=angle_unittests

Change-Id: I65dbbbebabdb24cf0bb647d40aa80cebf713c4f7
Reviewed-on: https://chromium-review.googlesource.com/506088Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>

This reverts commit ff77c359.

Reason for revert: Breaks FramebufferMixedSamplesTest on Android NVIDIA

BUG=angleproject:2045

Original change's description:
> Refactor multisample framebuffer completeness checks.
> 
> BUG=722684
> 
> Change-Id: Iebe6968ebd693e7f051394a040eac1cf6f539e6e
> Reviewed-on: https://chromium-review.googlesource.com/508221
> Reviewed-by: Geoff Lang <geofflang@chromium.org>
> Reviewed-by: Jamie Madill <jmadill@chromium.org>
> Commit-Queue: Geoff Lang <geofflang@chromium.org>
> 

TBR=fjhenigman@chromium.org,geofflang@chromium.org,jmadill@chromium.org
# Not skipping CQ checks because original CL landed > 1 day ago.
BUG=722684

Change-Id: I1abab021ba73b218cbbe60d4e7bfdaae56955c64
Reviewed-on: https://chromium-review.googlesource.com/517390Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Geoff Lang <geofflang@chromium.org>

This consolidates all texture allocation into ResourceManager11.
It removes a lot of error checking and resource management code.
In a few places we're storing some redundant information, like in
TextureStorage11, we might store the Format pointer in two places,
or the Texture's size.

BUG=angleproject:2034

Change-Id: I9369e76925a67632c444c662e5667c5ed7875547
Reviewed-on: https://chromium-review.googlesource.com/503252Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

Precision emulation rounding function calls and vector/matrix dynamic
indexing function calls now get a flag that indicates that running the
function body does not have side effects. This avoids triggering
asserts in OutputHLSL when these internal function calls end up on the
right hand side of a non-unfolded logical operator.

BUG=chromium:724870
TEST=angle_unittests

Change-Id: Id1a2b6b744f6a04c6cdb86a8f4109ccc12bc70b9
Reviewed-on: https://chromium-review.googlesource.com/516705Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>

BUG=722684

Change-Id: Iebe6968ebd693e7f051394a040eac1cf6f539e6e
Reviewed-on: https://chromium-review.googlesource.com/508221Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Geoff Lang <geofflang@chromium.org>

BUG=chromium:723069

Change-Id: I2b3c9be297c2b65955e31f393756ca266cc7c60b
Reviewed-on: https://chromium-review.googlesource.com/514436Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

This will allow us to use EGLAttrib and pass pointers as Display
init parameters if necessary.

BUG=angleproject:2042

Change-Id: Ib0f85d71bc9d3dff2db9453012f40303f3c3bd7c
Reviewed-on: https://chromium-review.googlesource.com/513518Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

This will make staging texture tracking easier.

BUG=angleproject:2034

Change-Id: I2f0418cc5784100bf6fba59b4bda1b2dd9dc18d1
Reviewed-on: https://chromium-review.googlesource.com/503251Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

Some non-renderable texture formats remain unimplemented.

BUG=angleproject:1932

Change-Id: Id206432d6e26a70fc0e84478a4e43e9eefadcf2f
Reviewed-on: https://chromium-review.googlesource.com/491948
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>

We will need the Renderer pointer for resource allocation, so
pass it around instead of storing the device and context.

BUG=angleproject:2034

Change-Id: Iaf271913f88c5402895aa81de310aa22fcd72cc4
Reviewed-on: https://chromium-review.googlesource.com/509930Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

We were not correctly checking for a zero-size buffer, which should
not trigger allocating a scratch buffer.

BUG=angleproject:1635

Change-Id: Iac0a3d8f1eeeb7b39c59eec411bec78a4f21bcd3
Reviewed-on: https://chromium-review.googlesource.com/513478Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

Precision emulation for compound assignment used to set the wrong type
for the compound assignment nodes, which could cause an assert to
trigger. The wrong rounding function was also being called in the lowp
rounded compound assignment function.

BUG=chromium:699479
TEST=angle_unittests

Change-Id: I60b4cb3bf1830e8249511c13037348bb2423e5b9
Reviewed-on: https://chromium-review.googlesource.com/514045Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>

This change also moves all SRV storage to use the custom smart
pointer classes in ResourceManager11. Every single SRV is now
allocated in ResourceManager11. For TextureStorage11 and
RenderTarget11, we use a shared pointer type since the SRVs use
shared ownership by both classes.

BUG=angleproject:2034

Change-Id: I90666fbbbc23ff10870b7401f3da09ef79258136
Reviewed-on: https://chromium-review.googlesource.com/503250Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

This prevents Chrome's about:gpu from being filled with bad shaders,
and instead only prints the relevant error lines.

BUG=None

Change-Id: I75fcd2ef920d2ed7b98e8668c487b0921faf4c0b
Reviewed-on: https://chromium-review.googlesource.com/513417Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

When ANGLE is used with Chromium, having two copies of safe numerics
code in namespace base causes ODR violations.

BUG=449754

Change-Id: I686049e7d8926373d00dd17ec8142fa3c508b9c5
Reviewed-on: https://chromium-review.googlesource.com/513434Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

BUG=chromium:723856

Change-Id: I7481d3335111c697f77aa0ea673614e79b4a86f6
Reviewed-on: https://chromium-review.googlesource.com/513588Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

Allow CopyTexImageTest.SubDefaultFramebuffer and
CopyTexImageTest.DefaultFramebuffer to work with Mesa and GLX back end
by doing a clear before reading the framebuffer.

BUG=angleproject:2027

Change-Id: Ibb10369e3f5aceb60511fbed1d67a28132734b29
Reviewed-on: https://chromium-review.googlesource.com/507952Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>

The spec isn't very explicit about disallowing this, but conversions
from structs are not among the conversion constructors or specified
in any other way either.

BUG=angleproject:2036
TEST=angle_unittests

Change-Id: I23f2ceda1d1348cec0d3bba38a7a013275ff84eb
Reviewed-on: https://chromium-review.googlesource.com/514002
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>

Otherwise we may run into a name conflict issue if the shader code is
run through the translator twice, since neither user-defined function
names or internal function names are currently being prefixed in GLSL
output. This could be fixed by prefixing user-defined variables in
GLSL output, but this solution is much simpler.

BUG=angleproject:1966
TEST=angle_end2end_tests, WebGL conformance tests

Change-Id: I15c8de5a0a5e596fafe9f55e8d370345c790d5cc
Reviewed-on: https://chromium-review.googlesource.com/509688
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>

Apparently the current clang roll has fixed these already.

BUG=722345

Change-Id: I59f07f197fdfd1eb6e000390ee93d41938fe4d42
Reviewed-on: https://chromium-review.googlesource.com/510031
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>

Use "?:" as the operator string to make the error message clearer.

Update some comments to refer to specific revisions of the spec, since
there have been some spec changes in this area.

BUG=angleproject:2032

Change-Id: Ic5d128391bfa46187ad335228077f5eab9eac349
Reviewed-on: https://chromium-review.googlesource.com/500270Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>

This uses the new classes introduced in ResourceManager11. Smart
pointers mean we can use ANGLE_TRY in more places, and don't need
to manually release these views. There is now a single point in the
D3D11 back-end where depth stencil views are allocated.

BUG=angleproject:2034

Change-Id: If0de2529ece1298e8babf24c07cc4be9849cc4de
Reviewed-on: https://chromium-review.googlesource.com/503249Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Jamie Madill <jmadill@chromium.org>

This patch intends to solve several design issues by refactoring
the process of syncState in VertexArrayGL before implementing
ES3.1 feature Vertex Attrib Binding on the OpenGL back-end.
1. Use nullptr as the flag of using client memory pointer
2. Simplify comparisons in updateAttribPointer.
3. Put all code related to mFunctions->vertexAttrib*Pointer()
into an individual function
4. Remove redundant mStateManager->bindVertexArray() in all
update* functioins and only call it once in syncState().

BUG=angleproject:1593

Change-Id: I8f68534bb9291a601b9b77954d7281e5171c2b55
Reviewed-on: https://chromium-review.googlesource.com/465378
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>

Multiple insertions to the same parent can be handled as long as the
insertions don't have the same position as well. They're sorted in
reverse order so that insertions to greater indices get processed
first.

This helps to make some AST transformations faster - they don't need
multiple tree traversals and updateTree() steps anymore. The
SimplifyLoopConditions AST transformation is changed to only use a
single traversal.

BUG=angleproject:1966
TEST=angle_unittests, angle_end2end_tests,
     WebGL conformance tests,
     dEQP-GLES2.functional.shaders.*select_iteration_count*

Change-Id: I3183f2644ad58b282926093c77b204fb7e4e9b71
Reviewed-on: https://chromium-review.googlesource.com/506202Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>

It doesn't need to use a traverser, since all function definitions can
be found simply by iterating over the children of the root node.

BUG=angleproject:2040
TEST=angle_unittests

Change-Id: I18a98eff9710485c0cdce73e7fffe124f7d7afb2
Reviewed-on: https://chromium-review.googlesource.com/508791Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>

The names were wrong, so the test expectations weren't applying.

BUG=722345

Change-Id: Ic64abf08e512dbf3c297ee89a74b614cd4590b58
Reviewed-on: https://chromium-review.googlesource.com/508166Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Kenneth Russell <kbr@chromium.org>