The Subzero JIT only supports constants in the second operand of
arithmetic operations, not the first. It assumes constant folding
already took place (true for NaCl which takes LLVM IR as input).
Reactor has constant folding as part of the static C++ compilation,
but the Optimizer may substitute the first operand for a constant
(i.e. constant propagation).

Addressing it in the Optimizer by not performing the substitution
is not trivial because we'd have to check each use. And it would
cost run-time performance. Ideally we'd have a pass for
legalization/optimization which performs constant folding.

For now, avoid hitting 'unreachable' code in Subzero by multiplying
constants at the Reactor level.

Fixes regression caused by https://swiftshader-review.googlesource.com/22910

Bug chromium:904265
Bug swiftshader:14

Change-Id: Ifdc72ac997ad5d71c1f7006259f54f3d715cb613
Reviewed-on: https://swiftshader-review.googlesource.com/c/22930Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>

GLSL textureSize() calls that use a sampler that is not a uniform,
should not use the index of the register as the texture unit index.
Instead the index is the value stored in the register itself.

Bug chromium:904265

Change-Id: Iee1058e789daae15248ae5ffa940a0155dca61b5
Reviewed-on: https://swiftshader-review.googlesource.com/c/22910Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

- Replaced sw::Viewport with VkViewport

Bug b/118386749

Change-Id: I2446883ba9e5623753322fc417386394a3fe370c
Reviewed-on: https://swiftshader-review.googlesource.com/c/22909Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>

This cl exposes the bare minimum in terms of format requirements
in order to support Vulkan 1.1.

Fixes all failures in: dEQP-VK.api.info.format_properties.*

Bug b/117974925

Change-Id: Ia84b1b13430faffeb840e118b09b9f3e352c8cc9
Reviewed-on: https://swiftshader-review.googlesource.com/c/22888Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>

- Replaced BlendFactor with VkBlendFactor
- Replaced BlendOperation with VkBlendOp

Bug b/118386749

Change-Id: I25031c044af05b1922d031db9e82c52bb785def5
Reviewed-on: https://swiftshader-review.googlesource.com/c/22850Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>

Implements support for VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FEATURES_2 and
other structure types used during Vulkan 1.1 device creation.

Bug b/117974925

Change-Id: Ic23067f145322a814ccda7dd44a087d7a4020e3d
Reviewed-on: https://swiftshader-review.googlesource.com/c/22689Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

vkGetInstanceProcAddr must return NULL when the instance parameter is
NULL, except for a few global functions.

vkGetDeviceProcAddr must return NULL for any non-device-level functions.

Fixes dEQP-VK.api.version_check.entry_points

Bug b/116336664

Change-Id: I446edb0b8c4b94938e0ab77913c8ad391d490f4f
Reviewed-on: https://swiftshader-review.googlesource.com/c/22688Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

<memory.h> isn't actually an official standard C header.
memcpy() is defined in <string.h> / <cstring>.

Change-Id: I578e3a8ea741934e594049e359b906665de80134
Reviewed-on: https://swiftshader-review.googlesource.com/c/22649Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

This adds the Pastel driver ID.

https://github.com/KhronosGroup/Vulkan-Docs
revision 256a1ef66182b2d458148f2fdea183557ea3f507

Bug b/116336664

Change-Id: I3d227eaff99b6bd8402b0808cfad7501438e9e65
Reviewed-on: https://swiftshader-review.googlesource.com/c/22648Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

SwiftShader can now be tested directly with dEQP, without using the
system's Vulkan loader or layers.

Bug b/116336664

Change-Id: I08816b5fb893d048c3dfe325ff54f44c646b250f
Reviewed-on: https://swiftshader-review.googlesource.com/c/22868Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

Unaligned accesses are undefined behavior, but they're common in our
ELF binary patching code for variable length instruction sets (namely
x86).

We can use memcpy() and rely on target-specific compiler optimizations
to make it efficient. Utility functions and classes were added to aid
readability.

Bug b/119823623

Change-Id: I8a82672a0d18d1e1783f580eb629f8cc09a009cd
Reviewed-on: https://swiftshader-review.googlesource.com/c/22828Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

Accessing members of a null pointer is undefined behavior, even when
only used to obtain the address again. So use a non-zero value as the
base pointer address instead. 32 was chosen to provide sufficient
alignment guarantees.

Bug b/119823623

Change-Id: Ia6d24dd6c2740261948860c45eb35cc489a3a827
Reviewed-on: https://swiftshader-review.googlesource.com/c/22788Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

Replaced LogicalOperation with VkLogicOp.

Bug b/118386749

Change-Id: I9776dd112e2a742cd73fba241e0659813cc974e7
Reviewed-on: https://swiftshader-review.googlesource.com/c/22849Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>

While implementing Pipeline Cache is optional, we still need a
placeholder object in order to return have a valid handle for
this object.

b/118386749

Change-Id: I18abb4196fbc99d3f639c1ba14ceb570ac11b365
Reviewed-on: https://swiftshader-review.googlesource.com/c/22729Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Tested-by: Alexis Hétu <sugoi@google.com>

Basic shell class for CommandPool

Bug b/119827933

Change-Id: Ibbc8ac641b168a15974fd4ff1803b5aff51f48a3
Reviewed-on: https://swiftshader-review.googlesource.com/c/22730Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>

The Vulkan sampler is simply a state, similar to the existing
sw::Sampler::State(), which will eventually be used by the
texture sampling code.

Bug b/119823006

Change-Id: Ib2f09683f82dbf5b5aacde1555ee850c76cda9e2
Reviewed-on: https://swiftshader-review.googlesource.com/c/22728Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>

- Replaced DepthCompareMode, StencilCompareMode and AlphaCompareMode
  by VkCompareOp.
- Replaced StencilOperation by VkStencilOp.

Bug b/118386749

Change-Id: I7dec0cff119012345865eb164599f086edf2c88a
Reviewed-on: https://swiftshader-review.googlesource.com/c/22768Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>

Surface::bytes() now supports all non-extension vulkan image formats.
Compressed formats are partially supported, the same way they were
for the OpenGL ES 3.0 implementation.

Bug b/118429780

Change-Id: Ica7f7d7184e9e00eeedfc76bc6b5c19e07aa3caf
Reviewed-on: https://swiftshader-review.googlesource.com/c/22568Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Tested-by: Alexis Hétu <sugoi@google.com>

To avoid format conversion issues and simplify the code, sw::Format
was replaced with VkFormat. sw::Format only contained formats with
exact 1:1 correspondence with an equivalent VkFormat, with the
exception of YUV formats, which will require a minor adjustment in
SamplerCore::sampleTexel().

Bug b/119620767

Change-Id: I8124cbc40e1031a5b233156a10e87c35f1334eef
Reviewed-on: https://swiftshader-review.googlesource.com/c/22549Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>

Basic shell class for RenderPass

Bug b/119620965

Change-Id: Ice98943587f363f8cf03eddd3cc4c504b899d682
Reviewed-on: https://swiftshader-review.googlesource.com/c/22612Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>

Basic shell class for Framebuffer

Bug b/119621736

Change-Id: Iaf5466d311efe011ea7bbd4a6e3ab2802474f98e
Reviewed-on: https://swiftshader-review.googlesource.com/c/22611Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>

Basic shell class for Image

Bug b/119620767

Change-Id: I75d37dd8c1a9b98264fe6dae68cd4753d6942103
Reviewed-on: https://swiftshader-review.googlesource.com/c/22610Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>

Basic shell class for ShaderModule

Bug b/118386749

Change-Id: Ia41957ba1ef3be179d20c37cea0227a9a4509c7b
Reviewed-on: https://swiftshader-review.googlesource.com/c/22609Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>

Basic shell classes for Pipeline, PipelineLayout

b/118386749

Change-Id: I1ec82d1bf2334d5e2cd338d96eff63f3714db198
Reviewed-on: https://swiftshader-review.googlesource.com/c/21888Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>

This library depends on a snapshot of LLVM that only works with C++11.

Bug: http://b/111067277
Test: Build with default cpp_std as C++17.
Change-Id: I40de7e2357afa3c16ceac7f50241a6d0437aba09
Reviewed-on: https://swiftshader-review.googlesource.com/c/22628Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Tested-by: Stephen Hines <srhines@google.com>

Moved MacOS specific frameworks from swiftshader_libGLESv2 to
swiftshader_libGLESv2_static to make sure the static version
also links properly.

Bug chromium:905648

Change-Id: I7736009abc378d634313028eb51aa0bb221c6419
Reviewed-on: https://swiftshader-review.googlesource.com/c/22608Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>

glDeleteQueries() instantly deletes all the es2::Query objects
passed as arguments to this function. If some of these queries
are still being used by the renderer, this will result in a use
after free error. To solve this issue, sw::Query is now a also
ref counted object.

Bug chromium:904714

Change-Id: Ic1d5781bbf1724d8d07936fd49c8a172dc3d9fd4
Reviewed-on: https://swiftshader-review.googlesource.com/c/22548Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>

VkPhysicalDeviceFeatures only contains VkBool32 members, and is also
described by the spec as a "structure that contains boolean indicators
of all the features to be enabled", as well as "For each feature, a
value of VK_TRUE specifies that the feature is supported on this
physical device, and VK_FALSE specifies that the feature is not
supported". Hence we can safely process it as an array of VkBool32.

This is also more likely to return false early when a requested feature
is not supported.

Bug b/117974925

Change-Id: I106ba6abf5f29874cde91fdaafd1dd9560aabfa9
Reviewed-on: https://swiftshader-review.googlesource.com/c/22512Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Corentin Wallez <cwallez@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

When an unsupported structure type was encountered this would lead to an
infinite loop.

Bug b/117974925

Change-Id: I0ba68e80a162ee631ae122b765cf8ea1149b3a3b
Reviewed-on: https://swiftshader-review.googlesource.com/c/22510Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Corentin Wallez <cwallez@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

Bug b/117974925

Change-Id: I9c4553a1586e4f9e4a193b24f6c1b07749a7702a
Reviewed-on: https://swiftshader-review.googlesource.com/c/22509Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Corentin Wallez <cwallez@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

Generic system memory is cached on all known ARMv8 and x86 CPUs, so
advertise it as such.

Bug b/118383648

Change-Id: Ic757206a497fc299e1e76a939220092f7c0a124d
Reviewed-on: https://swiftshader-review.googlesource.com/c/22448Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Corentin Wallez <cwallez@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

Also always clear the UUIDs first so that shorter strings don't leave
data undefined.

Bug b/116336664

Change-Id: I77d5ae1514db5d68d540614b7c57c4872695ecca
Reviewed-on: https://swiftshader-review.googlesource.com/c/22490Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Corentin Wallez <cwallez@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

This enables running the unit tests without manually querying each entry
function. The compiler generates a .lib file for us which load the .dll
file and retrieves the entry functions.

Also fix project dependencies and DLL path.

Bug b/116336664

Change-Id: I4cbd80bd071a20058b034db8fb12e31f9af2e081
Reviewed-on: https://swiftshader-review.googlesource.com/c/22489Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Corentin Wallez <cwallez@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

The popup dialog for waiting for the debugger was missing a resource,
causing DllMain to fail and thus failure to load the DLL.

Bug b/116336664

Change-Id: Ic12af87f3eb272a1f1ba27917926dcd845d86977
Reviewed-on: https://swiftshader-review.googlesource.com/c/22528Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

Changed limits for lineWidth and pointSize so that they're unsupported.
This fixes all remaining failures in dEQP-VK.api.info.device

b/117974925

Change-Id: I228dcb5305f2bfe5bb053aa968cebcbb7afaee98
Reviewed-on: https://swiftshader-review.googlesource.com/c/22511Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>

For some reason, the Vulkan Loader prevents any dialog window from
popping up, which means that loading the SwiftShader Vulkan DLL in
Debug was always failing, unless a debugger was already attached
(as is the case when running from within Visual Studio). The
debugger wait dialog can still be easily enabled locally by setting
the DEBUGGER_WAIT_DIALOG environment variable.

Bug b/116336664

Change-Id: I7ce596c753506c806bf6b159685a72d0372f949a
Reviewed-on: https://swiftshader-review.googlesource.com/c/22488Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Tested-by: Alexis Hétu <sugoi@google.com>

This fixes Chromium (mips64el) cross-comile failure
for v8 snapshot for host.

Bug: b/115344057, b/117854176
Change-Id: I0a348701151b9db288a3de84ef22c23bbd007a80
Reviewed-on: https://swiftshader-review.googlesource.com/c/22408Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Tested-by: Milko Leporis <milko.leporis@mips.com>

A hang in Chromium on MacOS seems related to attempting to load
libGLES_CM repeatedly, since it doesn't exist. While dlopen()
probably shouldn't be this slow, it could also be related to a
sandboxing issue. In any case, this cl attempts to go around the
issue by never trying to load a library twice.

Bug chromium:904346

Change-Id: I65122f0fc9acb4f8db2a606437c61796464f72ad
Reviewed-on: https://swiftshader-review.googlesource.com/c/22468Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>

Some classes were given the following attribute:
[[clang::lto_visibility_public]]

This produces a warning in Visual Studio.

This was meant to allow these base classes to be visible
to both libEGL and libGLESv2. Vulkan will be a single DLL,
so this won't be an issue, so I simply removed both
instances of this attribute in the Vulkan project.

Change-Id: I6d1b0bb0ab5351d6b788917c0b876e9355505404
Reviewed-on: https://swiftshader-review.googlesource.com/c/22428Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>

4 basic things here:
- Set SwiftShader formats to match the equivalent Vulkan format,
  when available
- Removed SwiftShader formats with no exact match in Vulkan formats
- Added all currently unavailable Vulkan formats in comments in the
  list, possibly to be added later, when necessary
- Marked all mandatory sampled formats in the list (in comments)

Bug b/118429780

Change-Id: I7d7b661e64cb4aee9eb724c64664cee8271cc48c
Reviewed-on: https://swiftshader-review.googlesource.com/c/21808Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>