SwiftShader should be able to build on Fuchsia, but it would
hit a collision error if added as a dependency in Fuchsia,
so the same logic currently used on MacOS could also be used
to avoid the collision on Fuchsia.

Change-Id: I9ac216dfc2180165a82bd5ae81c843ee4aea7ce6
Reviewed-on: https://swiftshader-review.googlesource.com/19328Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Sergey Ulanov <sergeyu@chromium.org>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>

The parameters of the matrix constructor form an aggregate node that
was passed directly to the constructor of the structure, instead of
creating a one-element aggregate containing the matrix.

https://github.com/mc-imperial/shader-compiler-bugs/issues/74

Bug swiftshader:56

Change-Id: Iff9a2d8dc60d79a0dde28f2aad76407028486ec8
Reviewed-on: https://swiftshader-review.googlesource.com/19308Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

It appears that not only render targets, but also samplers that use
IOSurfaces require SwiftShader to perform synchronized draws,
otherwise it seems like using a shared IOSurface's CPU memory is
unsafe and can cause crashes in Layout Tests.

Bug chromium:846693

Change-Id: I0ce24700d34c657ac2447ceb2f6f837bfa3a9a58
Reviewed-on: https://swiftshader-review.googlesource.com/19288Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>

Change-Id: If953be0cce3cd11b833d9646e10ede0b31732729
Reviewed-on: https://swiftshader-review.googlesource.com/19248Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

Change-Id: I0984f43de3846428c30232192c7ba83342b1debd
Reviewed-on: https://swiftshader-review.googlesource.com/19228Reviewed-by: Krzysztof Kosiński <krzysio@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>
Tested-by: Nicolas Capens <nicolascapens@google.com>

Bug chromium:849217

Change-Id: I69d2269c117500d21e5d0860aed0acea212948ba
Reviewed-on: https://swiftshader-review.googlesource.com/19268Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

Added missing function declaration.

Change-Id: I52ddb666d70733187242906d298fb986f413756a
Reviewed-on: https://swiftshader-review.googlesource.com/19208Reviewed-by: Alexis Hétu <sugoi@google.com>
Tested-by: Alexis Hétu <sugoi@google.com>

Because of the way SwiftShader is integrated into Chromium on MacOS,
a synchronization issue exists when Chromium attempts to use an
IOSurface before SwiftShader is done rendering into it. In order to
solve this, all draw calls that end up rendering into an IOSurface
must be synchronized within SwiftShader and can't yield to Chromium
until rendering is complete.

Bug chromium:847094

Change-Id: If2dba4fa998e7437ec414d3b4aff9e8b19ecc128
Reviewed-on: https://swiftshader-review.googlesource.com/19188Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>

Fixes "error: conditional expression is ambiguous; 'sw::Float' can be
converted to 'RValue<sw::Float>' and vice versa".

Change-Id: I2bd21036803dc54ce212df61a7520b7276b94b2a
Reviewed-on: https://swiftshader-review.googlesource.com/19168Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Tested-by: Nicolas Capens <nicolascapens@google.com>

The numeric imprecision can accumulate quickly and cause visible
sampling errors.

Bug chromium:848238

Change-Id: Ie41c10a0462e5b5e5c3ed5f7329ece00dab3f7f9
Reviewed-on: https://swiftshader-review.googlesource.com/19148Reviewed-by: Alexis Hétu <sugoi@google.com>
Tested-by: Nicolas Capens <nicolascapens@google.com>

On Windows, GLAPI defaults to __declspec(dllimport), while GLAPICALL is
empty, leading to declaration mismatches. Either should be empty for
the unit tests since we link statically, for all platforms.

Change-Id: I2dde0ca35108678fd9767895e0120ee4b0d7030f
Reviewed-on: https://swiftshader-review.googlesource.com/19128Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

GLAPI is the desktop OpenGL equivalent of OpenGL ES's GL_APICALL macro.
They need to be consistent to prevent CLang from producing errors when
compiling with -Werror,-Winconsistent-dllimport.

Change-Id: Iceb73f42f52628a31aba7ce18fe60221529f890c
Reviewed-on: https://swiftshader-review.googlesource.com/19108Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

https://github.com/KhronosGroup/EGL-Registry/pull/43 made eglplatform.h
include X11 headers on Mac OS, which aren't pre-installed and breaks
the Chrome build.

https://github.com/KhronosGroup/EGL-Registry/issues/52

Change-Id: I73e3c11244a07e269684323ce76cc9700fe9c1aa
Reviewed-on: https://swiftshader-review.googlesource.com/19088Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

Fixing https://github.com/KhronosGroup/OpenGL-Registry/pull/149 and
https://github.com/KhronosGroup/OpenGL-Registry/pull/183 enabled
including desktop OpenGL headers without conflicts, so we no longer
have to define enums for ARB extensions ourselves.

Change-Id: I4f2e2d3b79a6f5cacf53f2a8ace78b6d124cb5d1
Reviewed-on: https://swiftshader-review.googlesource.com/19029Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

Change-Id: If56e711f15236397ac0f8b15f4ca182a7b1e7c49
Reviewed-on: https://swiftshader-review.googlesource.com/19028Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

This allows compilers targeting the MS ABI to select the
correct inheritance model for the member function pointer field
DrawCall::setupPrimitives using the complete type of Renderer. It
will allow us to enable the new Clang flag -fcomplete-member-pointers
globally.

Bug: chromium:847724
Change-Id: Ied5859ec2f5d38b3ccf51608527506caec53f470
Reviewed-on: https://swiftshader-review.googlesource.com/19068Tested-by: Peter Collingbourne <pcc@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>

delete[] should be called on memory allocated with new[].

Change-Id: Ic21e270a7aa0e6e15132cbc3c454ea4f1e0222ea
Reviewed-on: https://swiftshader-review.googlesource.com/19048Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

Loops were no longer getting unrolled because we analyzed the entire
loop, not just the body, for changes to the index variable. Also, the
logic was inverted. Also, be conservative about loops with return
statements not being unrollable.

Bug chromium:845103

Change-Id: I5957e17f7b985ae90b10053216b6945f3f64338e
Reviewed-on: https://swiftshader-review.googlesource.com/19008Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

Previously we only copied the GLSL shader compiler's info log on
failure. This hid any warnings or debug info from the application.

Bug chromium:845103

Change-Id: Ia1877a405db2017d327dfc68037596fbda1579fa
Reviewed-on: https://swiftshader-review.googlesource.com/19009Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

Previously only dynamic indexing of uniforms was supported.

Since this is essentially a gather operation within the register file,
it is slow. We optimize the common case of using the loop index
variable as relative address, where the index value would be the same
for all shader invocations running in lock-step across SIMD lanes.

Bug chromium:845103
Bug skia:7846

Change-Id: Idb36b512dd560d740ac9088691b633ff3a1561c1
Reviewed-on: https://swiftshader-review.googlesource.com/18968Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

This allows to address the registers with a vector of indices.

Also rename 'dynamic' register files to 'indirect addressable', to
disambiguate from 'dynamic indexing' at the shader level. Indexing with
a uniform does not require gather/scatter operations, but does require
indirect addressing.

Bug chromium:845103
Bug skia:7846

Change-Id: I3c42be33def66328688f2900c61c80246bf1e584
Reviewed-on: https://swiftshader-review.googlesource.com/18989Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

Loops can only be unrolled if their loop index variable is not being
modified in the loop body.

Also check that the increment step of the loop operates on the initial
index variable.

Also remove some UNIMPLEMENTED's that were benign.

Bug chromium:845103
Bug chromium:843867
Bug skia:7846

Change-Id: Ib2b39f2d58763f0299ce7f6f75a8a75e6bdc7963
Reviewed-on: https://swiftshader-review.googlesource.com/18988Reviewed-by: Alexis Hétu <sugoi@google.com>
Tested-by: Nicolas Capens <nicolascapens@google.com>

Change-Id: Icdeb96a3044ddf215a59ab832703bb447d85c3ab
Reviewed-on: https://swiftshader-review.googlesource.com/18948Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

Change-Id: I3cd5b2514149c5bf44dfab483eda415082da7793
Reviewed-on: https://swiftshader-review.googlesource.com/18928Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

This usage is not explicitly specified in EXT_texture_filter_anisotropic,
but in practice all notable ES 3.0 implementations treat maximum anisotropy
as sampler state. Furthermore, it's already accepted as a valid sampler
parameter by ValidateSamplerObjectParameter in Context.cpp.

This avoids a crash when calling
glSamplerParameteri(sampler, GL_TEXTURE_MAX_ANISOTROPY_EXT, 1.f);

Bug: b/79951966
Change-Id: I4013f621781fc74a0fbfbf14ab326871fbb87b7c
Reviewed-on: https://swiftshader-review.googlesource.com/18908Reviewed-by: Alexis Hétu <sugoi@google.com>
Tested-by: Krzysztof Kosiński <krzysio@google.com>

We assume the pixels of an image can be addressed with a signed 32-bit
offset, including any padding. For a 3D image it's possible to exceed
this without exceeding the per-dimension limits. Lowering the per-
dimension limit so the allocation is always less than 2 GiB makes them
unreasonably small, so instead we must check the total size.

Use 1 GiB as the soft limit in OpenGL.

Bug chromium:835299

Change-Id: I9c5184002c1710e3923b549f8c21e7f6a516e1c7
Reviewed-on: https://swiftshader-review.googlesource.com/18869Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Tested-by: Nicolas Capens <nicolascapens@google.com>

This eliminates the duplication between pitchB() and size(), and
ensures that the latter is the full allocation size.

Bug chromium:835299

Change-Id: Icf555ad497fb3b92fd00e9a3e6ced6810b2d310d
Reviewed-on: https://swiftshader-review.googlesource.com/18789Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

OpenGL has separate implementation-defined texture size limits, for
3D textures and array textures. For now just give them the same value.

Bug chromium:835299

Change-Id: Ifaf537511f016e21992388f56598d5ec12a393b8
Reviewed-on: https://swiftshader-review.googlesource.com/18788Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

https://gitlab.khronos.org/opengl/API/issues/72 was resolved to treat
these cases as a no-op and not generate an error.

Bug chromium:825545

Change-Id: Ic4cfbc728156bb88a6dc70486ae57c3e12ea43ae
Reviewed-on: https://swiftshader-review.googlesource.com/18870Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

The format comparison for blitting from a multisampled buffer
was not ES2 specific, so the ES3 check was removed. That had
been added to fix blitting to the backbuffer on MacOS, which
is now instead fixed by allowing BGRA8 and RGBA8 to be
accepted interchangeably as draw and read formats.

Fixes dEQP-GLES3.functional.negative_api.buffer.blit_framebuffer_multisample

Change-Id: Id577372791007a780c542b0986378147e1e7bc1b
Reviewed-on: https://swiftshader-review.googlesource.com/18888Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Tested-by: Alexis Hétu <sugoi@google.com>

atan(0, <negative>) was returning 0 instead of PI. Did a simple
fix in the arctan() function and added an associated unit test.

Change-Id: Idbbdaf099b5104e3aaa2868ca8fd806c6c735981
Reviewed-on: https://swiftshader-review.googlesource.com/18868Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>

This extension works the same as OpenGL ES 3.0 vertex arrays, but requires
entry points with the OES suffix.

Change-Id: I82b92bbcec078f88becee6f3b37eb7e8256a1233
Reviewed-on: https://swiftshader-review.googlesource.com/18808Tested-by: Krzysztof Kosiński <krzysio@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>

The cl "Fix Linux build." broke swiftshader_unittests on Linux and
MacOS. Reverting part of that cl to fix swiftshader_unittests, and
hopefully keep the part of the cl that fixed the build originally.

Change-Id: I3126a12f12ca7337f18c758db16dd3542dcfc226
Reviewed-on: https://swiftshader-review.googlesource.com/18848Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

On MacOS, a Surface constructor receiving the 'pitchPprovided'
parameter wasn't using it for the surface's external pitch,
which was causing an error when using the Image::getPitch()
function, which returns getExternalPitchB(). Image::getPitch()
is used within Image::loadImageData(), which is used by gl
functions like glTexImage2D() and glTexSubImage2D(). Both the
internal and external buffers now use the parameter to solve
this issue.

Bug b/19979104

Change-Id: I9762ed53b535ae9eb052f57ee1ceed8ee87cb29c
Reviewed-on: https://swiftshader-review.googlesource.com/18828Tested-by: Alexis Hétu <sugoi@google.com>
Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>

Texture rectangle coordinates were clamped in the [0, dim - 1] range,
but should have been sampled in the [0.5, dim - 0.5 range] according
to the spec (a related comment was added in the code).

Also, by having getAddressingModeW() return ADDRESSING_LAYER for
rectangle textures, the 3rd texture coordinate computation will be
skipped entirely, preventing the temporary variable 'fv' from being
overwritten.

Change-Id: I4bbc30b2a2b747eae2f2a1dfb710a986bff7849b
Reviewed-on: https://swiftshader-review.googlesource.com/18768Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>

Executable heap memory can confuse profiling tools. Use memfd_create
on Linux, if possible, to create a named anonymous memory region.

Only enabled if LINUX_ENABLE_NAMED_MMAP is defined.

Bug b/73721724

Change-Id: I420711e4f64725ae834ab54264038683e4c445fe
Reviewed-on: https://swiftshader-review.googlesource.com/17208Reviewed-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Ian Rogers <irogers@google.com>
Tested-by: Nicolas Capens <nicolascapens@google.com>

This fixes a undefined shift if the temporary register has an index
higher than 32 (also, we only have 16 samplers currently). For GLSL
we declare all actual sampler units during ASM output, so we don't
have to rely on analyzing the instructions afterwards (that is only
still relevant for Direct3D 8/9 shaders).

Change-Id: I11a58964d53fcc2c29e0ad923d9a4a4161a545f4
Reviewed-on: https://swiftshader-review.googlesource.com/18748Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

The EGL 1.4 spec description of eglChooseConfig states:
"If EGL_MAX_PBUFFER_WIDTH, EGL_MAX_PBUFFER_HEIGHT, EGL_MAX_PBUFFER_-
PIXELS, or EGL_NATIVE_VISUAL_ID are specified in attrib_list, then they
are ignored"

Change-Id: I9ec90eff692f9759aa54a0a10f1e57f2c244db7f
Reviewed-on: https://swiftshader-review.googlesource.com/18608Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

These enums don't have the same value, but this is only because of
desktop OpenGL and OpenGL ES having evolved separately. OpenGL ES 3.0
reconverged to use the enum name and value of desktop OpenGL.

Apps choosing between OpenGL ES 2.0 and 3.0 strictly speaking have to
use different enums, but many drivers already accept either enum so the
apps don't bother to differentiate them. Running them on a driver which
adheres more strictly to the (extension) specs would cause parameter
validation errors.

Additionally, native platform pixel formats such as
HAL_PIXEL_FORMAT_RGBA_FP16 on Android couldn't be mapped to GL_RGBA16F
with GL_HALF_FLOAT component types on an OpenGL ES 2.0 context if the
latter are considered OpenGL ES 3.0 only.

Change-Id: Ib66cba7444fe438c0e4a8a6454460773cf02236d
Reviewed-on: https://swiftshader-review.googlesource.com/18728Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>

We don't need protected visibility because we now have a version script
which hides all symbols except the ones we want to export.

Fixes ld linker errors:
 relocation R_X86_64_PC32 against protected symbol `libEGL_swiftshader' can not be used when making a shared object
 relocation R_X86_64_PC32 against protected symbol `libGLESv2_swiftshader' can not be used when making a shared object

Change-Id: I059c4b03f2523bf8caf08180b02a349d3cf7b2f2
Reviewed-on: https://swiftshader-review.googlesource.com/18708Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Corentin Wallez <cwallez@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>