This is prohibited by the GLSL ES spec:
"In addition, all identifiers containing two consecutive underscores (__) are reserved for use by underlying
software layers. Defining such a name in a shader does not itself result in an error, but may result in
unintended behaviors that stem from having multiple definitions of the same name."
(https://registry.khronos.org/OpenGL/specs/es/3.1/GLSL_ES_Specification_3.10.withchanges.pdf, section 3.7).
However, while glslang validation will not give an error on this, NVidia
ES drivers will. So I've added a Dawn end2end test instead of a WGSL test.
Bug: tint:1944
Change-Id: I4b965af00039ca7a232bc11be884483f8e02ccf6
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/134140
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Stephen White <senorblanco@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
perfmon is struggling with the number of benchmarks x CLs in flight.
Remove some of the less useful benchmarks.
Change-Id: Ib01432e990c437dbc5ef2445da23d4beaf087f68
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/134501
Kokoro: Kokoro <noreply+kokoro@google.com>
Auto-Submit: Ben Clayton <bclayton@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: James Price <jrprice@google.com>
When an initializer is present, use type inference instead of
explicitly typing `var` and `let` declarations. This reduces the size
of the generated WGSL and improves readability.
Change-Id: I241ee2108279b550735945940f2b62bbbd493708
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/132142
Commit-Queue: David Neto <dneto@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Auto-Submit: James Price <jrprice@google.com>
Reviewed-by: David Neto <dneto@google.com>
Change-Id: I4f8ff98b980d9dd9a89e7e4407f6e1cbd1eaaf0a
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/132320
Kokoro: Ben Clayton <bclayton@google.com>
Auto-Submit: Ben Clayton <bclayton@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Reviewed-by: James Price <jrprice@google.com>
An OpName decoration for a result ID may end up unintentionally
shadowing a WGSL builtin function.
Fixed: tint:1932
Change-Id: I1b1302629c69b7bdf7a0a0c97d3ad6ce3d0d587b
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/132080
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: James Price <jrprice@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
Unwrap sem::Materialize as well as sem::Load when looking for users of
a renamed declaration.
Fixed: tint:1934
Change-Id: I7d5ade1f902dbdb4cf3b4f7552b78359f5b3ea9a
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/132060
Commit-Queue: James Price <jrprice@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
When traverseing an accessor expression, stop as soon as we hit a
source object that has a constant value. This prevents us from trying
to emit expressions that have abstract types and no materialization
nodes.
Bug: chromium:1442551
Change-Id: I8296ae58e63624e647052cdf966dbff15630a4d8
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/132040
Auto-Submit: James Price <jrprice@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
This makes the generated WGSL more concise and readable.
Change-Id: I78a722b9a86264d3bbf219445628dc5597cbfd62
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/132141
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: James Price <jrprice@google.com>
Reviewed-by: David Neto <dneto@google.com>
This makes the generated WGSL more concise and readable.
Change-Id: Ia486a74796a4029aaac1c4d051d304d05f1d5ea2
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/132140
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: David Neto <dneto@google.com>
Commit-Queue: James Price <jrprice@google.com>
The BuiltinPolyfill transform expects the DirectVariableAccess transform
to run after it, but this regressed as part of
https://dawn-review.googlesource.com/c/dawn/+/122203
Add unit test along with e2e 1926.wgsl test.
Bug: tint:1926
Change-Id: I5107453ce152b12e6f2f36930846e1fffa775708
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/131020
Reviewed-by: James Price <jrprice@google.com>
Commit-Queue: Antonio Maiorano <amaiorano@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Allow the resolver to understand builtin structures, like
__frexp_result_f16. This allows backend transforms to declare the types,
even if they're "untypable" by the user.
Bug: chromium:1430309
Change-Id: I392709118182a058f737ccf1b7b46fc6b0b7264d
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/129482
Kokoro: Ben Clayton <bclayton@google.com>
Reviewed-by: Dan Sinclair <dsinclair@chromium.org>
Commit-Queue: Ben Clayton <bclayton@google.com>
When an OpConstantComposite result is used by multiple instructions,
declare it as a module-scope `const` instead of inlining the constant
at each use site. This fixes an issue whereby the spirv-reader was
massively inflating the size of the WGSL it produces, which was caught
via an OOM fuzzer bug.
Bug: oss-fuzz:57795
Change-Id: Iac8c6a2147a7e2ebfddbaacae9fcb1dbe0b59e9d
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/128881
Auto-Submit: James Price <jrprice@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: David Neto <dneto@google.com>
Commit-Queue: David Neto <dneto@google.com>
When `invariant` is enabled on MSL was was incorrectly setting
`@invariant` instead of `[[invariant]]`. We test with metal1.2 which
does not have invariant, so this only showed up when using metal2.1 or
higher.
Bug: chromium:1439273
Change-Id: Iab866608195e697b0370d465f350b25277d904a3
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/128880
Commit-Queue: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
When referencing a pointer parameter with a 'let', but not using that
let.
Also fix a bunch of places where we used the old names for the pointer
transforms.
Bug: chromium:1433499
Change-Id: I8decefeacd6150bd6f7637f80e62b9cb62936235
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/127540
Kokoro: Kokoro <noreply+kokoro@google.com>
Auto-Submit: Ben Clayton <bclayton@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
D3D11 only supports HLSL SM5.0 which doesn't support `space`
(binding group in WGSL). So for D3D11, only one binding group will be
used, and tint will not emit `space` for HLSL, so shaders can be used
with D3D11.
Bug: dawn:1705
Change-Id: Ie0e9868137f10762c5243e188d76f5e41879c2bc
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/125080
Commit-Queue: Peng Huang <penghuang@chromium.org>
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Ben Clayton <bclayton@google.com>
min16float is not required to convert its input to an 16-bit float.
Instead, use f32tof16, and f16tof32.
This is also required to be able to enable the IEEE strictness option on
FXC, otherwise FXC emits an error X4028: expression has a minimum
precision type and cannot be marked precise
Bug: tint:1887
Change-Id: I2268c9336b8e873b36e6532984838054fe4dedbd
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/125920
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
In order to avoid declaring too many function parameters, we
previously modified this transform to redeclare private variables that
are only used inside a single function as function-scope
variables. This was broken as it meant that their values did not
persist across multiple calls to the same function.
Instead, wrap all private variables in a structure and pass it around
as a pointer.
Fixed: tint:1875
Change-Id: I83f5eb1071d57b9c6af56d6cf21b3a32c6e94260
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/124800
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: James Price <jrprice@google.com>
This CL updates the generators to receive the exteral texture options
instead of generating them.
Bug: tint:1855 chromium:1421379
Change-Id: Ib38b902aa441e33d394f947d753075ca6a8fe73b
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/123260
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
Conversion can happen for structure materialization (modf, frexp).
If both structure members are the same type and value, then a constant::Splat will be constructed, which needs to handle conversion.
Bug: chromium:1417515
Change-Id: Iadd14ce00b8d5c22226c601ec5af9a84e6c0c5cf
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/122900
Reviewed-by: James Price <jrprice@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
And vectors of those types.
Fixed: tint:1866
Change-Id: Ic0b5061232c5eb5a67d43dde1cd9599c580f4388
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/123201
Reviewed-by: Dan Sinclair <dsinclair@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: David Neto <dneto@google.com>
Commit-Queue: Ben Clayton <bclayton@chromium.org>
Kokoro: Ben Clayton <bclayton@chromium.org>
WGSL states that `f32` is a IEEE-754 binary32. mediump precision guarantees are much smaller than highp, and using mediump can break code generated by tint.
Change-Id: I8a129c4c8ac078c785e0d5d7d21f19ed6b3620b5
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/123400
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: Stephen White <senorblanco@chromium.org>
mix of ivec is not core until later GLSL versions.
Just polyfill in the writer with ternary ops.
Change-Id: Ia0c35bf95842e03ef8447019f3264d01c11fd384
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/123240
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: Stephen White <senorblanco@chromium.org>
Kokoro: Ben Clayton <bclayton@google.com>
Evaluate the LHS before the RHS.
Fixed: tint:1867
Change-Id: Ib63903ed4b1425007197a6da37f3bf54a495d88a
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/123120
Commit-Queue: Ben Clayton <bclayton@chromium.org>
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: James Price <jrprice@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
GLSL has the same behavior as MSL, in that -2147483648 is parsed as
a unary minus on '2147483648'. 2147483648 overflows an i32, so this
actually gets treated as -0.
Change-Id: Ibebd8b78a8840f18c438ed1d3d24dee486a65816
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/123202
Reviewed-by: Stephen White <senorblanco@chromium.org>
Commit-Queue: Ben Clayton <bclayton@google.com>
Commit-Queue: Ben Clayton <bclayton@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
... overloads for texture cube arrays
FXC is telling porkies, when it says "The array element count
of GetDimensions on TextureCubeArray objects is unavailable
on ps_5_1".
The actual issue, as identified by Teodor Tanasoaia at Mozilla,
is that the argument needs to be unsigned.
In fact, *all* the texture queries should have used an unsigned
scalar or vector for the output value. This has been broken
forever!
This reverts commit bd9f6e6684.
Change-Id: I3e217bec17c6fd203cff618b143ebef3d8a61927
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/122980
Auto-Submit: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Dan Sinclair <dsinclair@chromium.org>
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
This change overhauls the Robustness transform to support three modes,
per address space:
* ignore - Disable robustness checks for the address space
* clamp - Clamp indices / texture args to ensure they're in
bounds. This was the old behavior, and continues to
be the default.
* predicate - Condition all indexing / textureLoad / textureStore /
atomic* operations on the bounds check. If any
dependent value is out of bounds, then the operation
is skipped.
This change also fixes multiple expression evaluation of the texture
builtin 'level' argument.
Change-Id: I2e300ddff2c8d3183a9701f06985ce1b262baf2c
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/122343
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: James Price <jrprice@google.com>
Kokoro: Ben Clayton <bclayton@chromium.org>
Commit-Queue: Ben Clayton <bclayton@chromium.org>
It appears that FXC and DXC do some validation post dead-code-elimination.
These tests have been updated so that the return value is assigned to a storage buffer, ensuring that all validation is performed.
Many DXC tests are affected by https://github.com/microsoft/DirectXShaderCompiler/issues/5082, which have been SKIP'ed.
Fixed: tint:1859
Change-Id: I0001a9a9821846cd0855c3d8ce2bec79ab8e64ef
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/122662
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: James Price <jrprice@google.com>
Commit-Queue: James Price <jrprice@google.com>
Auto-Submit: Ben Clayton <bclayton@google.com>
Recent changes to DecomposeMemoryAccess meant we lost the dependency information between the user of a module-scope variable of the storage / uniform address space and the variable.
Add dependency information to ast::InternalAttribute so this can be tracked.
This change also means that symbol renaming after the DecomposeMemoryAccess should work.
Fixed: tint:1860
Change-Id: Icfa2925f95c2ac50702522df514cd11bde727546
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/122660
Reviewed-by: James Price <jrprice@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
The texture_storage_3d overload should allow for unsigned coordinates.
Change-Id: I6278571fb9dc7bba644a4ba88cce6b8bd7c790bf
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/122521
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: James Price <jrprice@google.com>
This CL updates the templates in the StringStream to match more types.
All of the internal `operator<<` methods have been converted over to
StringStream. The precision was increased in order to better match the
precision needed to read back as a double.
Bug: tint:1686
Change-Id: Iaa15cf247f174967dd1014647ba5a74804997c22
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/122080
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
There's no good reason for this to be public.
Move it into the writers, and expose a 'disable_robustness' option to
turn it off. This can be expanded to hold more fine-grain control in the
future.
Change-Id: I6ea6e54a27b2ae0fbcba5fdf45539063045cc15a
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/122203
Commit-Queue: Ben Clayton <bclayton@google.com>
Kokoro: Ben Clayton <bclayton@google.com>
Reviewed-by: Dan Sinclair <dsinclair@chromium.org>
Auto-Submit: Ben Clayton <bclayton@google.com>
Reviewed-by: Austin Eng <enga@chromium.org>
When using HoistToDeclBefore on a for-loop initializer, the inserted
statement would be scoped outside the for-loop. This was incorrect.
Change-Id: I764d07068e907cc203145ac8d6f0110b1b73e667
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/122301
Commit-Queue: Ben Clayton <bclayton@chromium.org>
Kokoro: Ben Clayton <bclayton@chromium.org>
Reviewed-by: Dan Sinclair <dsinclair@chromium.org>
Hoisting them would cause premature materialization. This will only
happen in cases where we do not actually need to hoist (e.g. assigning
to a phony), so we can safely skip these.
Fixed: tint:1852
Change-Id: Ifcbe3e13496daa0a6aaceb58540e60cb037885ea
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/122104
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: James Price <jrprice@google.com>
This CL switches the GLSL Generator to use utils::StringStream. The line
writer is converted internally as well, although it converts to
`std::ostream` for now. This caused a couple of the MSL, HLSL and GLSL
tests to generate slightly fewer decimal points in a couple tests.
Bug: tint:1686
Change-Id: I9ec8c1a5ef49679fc1c9a9aece86ab3390e103fc
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/121880
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
In order to preserve padding properly for MSL, we need to use its
packed_vec type for all vec3 types in storage buffers, not just struct
members. This commit includes a complete rewrite of the PackedVec3
transform to achieve this. The key details are:
* An internal `__packed_vec3<>` type was added, which corresponds to a
`type::Vector` with an additional flag to indicate that it will be
emitted as packed vector.
* The `PackedVec3` transform replaces all vec3 types used in
host-shareable address spaces with the internal `__packed_vec3`
type. This includes vec3 types that appear as the store type of a
pointer.
* When used as an array element, these `__packed_vec3` types are
wrapped in a struct that contains a single `__packed_vec3`
member. This allows us to add an `@align()` attribute that ensures
that `array<vec3<T>>` still has the correct array element stride.
* When the `vec3<T>` appears as a struct member in the input program,
we apply the `@align()` to that member to ensure that we do not
change its offset.
* Matrix types with three rows that are used in memory are replaced
with an array of columns, where each column uses a `__packed_vec3`
inside an aligned wrapper structure as above.
* Accesses to host-shareable memory that involve any of these types
invoke a "pack" or "unpack" helper function to convert them to the
equivalent type that uses `__packed_vec3` or a regular `vec3` as
required.
* The `chromium_internal_relaxed_uniform_layout` extension is used to
avoid issues where modifying a type in the uniform address space
triggers stricter layout validation rules.
Bug: tint:1571
Fixed: tint:1837
Change-Id: Idaf2da2f5bcb2be00c85ec657edfb614186476bb
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/121200
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: James Price <jrprice@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
The PreservePadding transform now decomposes writes to matrices with
three rows into separate column vector writes, to avoid modifying
padding between columns.
Bug: tint:1571
Change-Id: If575f79bb87f52810783fd3338e2f3ce3228ab2e
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/121600
Auto-Submit: James Price <jrprice@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: James Price <jrprice@google.com>
Stephen White
Ben Clayton
James Price
Antonio Maiorano
dan sinclair
Peng Huang