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>
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>
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>
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>
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>
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>
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>
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>
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>
This makes the output value consistent between different platforms.
Change-Id: I4f94da4deac6998c4b809b03ed3b8f58d32bb1b0
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/121501
Commit-Queue: James Price <jrprice@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Change the DecomposeMemoryAccess to behave more like the DirectVariableAccess transform, in that it'll inline the access of buffer variable into the load / store helper functions, instead of passing the array down.
This avoids large array copies observed with FXC, which can have *severe* performance costs.
Fixed: tint:1819
Change-Id: I52eb3f908813f72ab9da446743e24a2637158309
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/121460
Kokoro: Kokoro <noreply+kokoro@google.com>
Auto-Submit: Ben Clayton <bclayton@google.com>
Reviewed-by: James Price <jrprice@google.com>
Commit-Queue: James Price <jrprice@google.com>
UV plane's coord should be half of that of Y plane for NV12.
Bug: chromium:1415832
Change-Id: Icee851e61eca1f7da291285100f8edcce482b511
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/119860
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Jie A Chen <jie.a.chen@intel.com>
Commit-Queue: Jie A Chen <jie.a.chen@intel.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
This CL makes the builtin argument resolve as a shadowable enumerator
expression.
Bug: tint:1841
Bug: tint:1845
Change-Id: I2aaa2c63025752f25c113cf2fb38f4d91c2c16c2
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/120680
Kokoro: Ben Clayton <bclayton@google.com>
Reviewed-by: Dan Sinclair <dsinclair@chromium.org>
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: James Price <jrprice@google.com>
Polyfill this for the SPIR-V, HLSL and GLSL backends by replacing bgra8unorm with rgba8unorm, and swizzling.
Bug: tint:1804
Change-Id: I36638202840d7313001dff6c5b60dcb948988c34
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/117204
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
The HLSL `sign` method returns an `int` result (scalar or vector). The
WGSL `sign` expects the result to be the same type as the argument. This
CL injects a cast to the correct type after the `sign` call in the HLSL
generated source.
Bug: tint:1795
Change-Id: I51fed24b5b8b752b6b27fdfb5dd47eb803902793
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/116692
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Fix unit and WGSL test results.
Bug: dawn:1301
Change-Id: Idfe046bdb211c8db9724e02c2f9dfb12d04d5c2a
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/114800
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Stephen White <senorblanco@chromium.org>
Accept any type in the intrinsics definition, and then manually
validate that there are no atomics in the type. Add manual E2E tests
for composite types.
Use the BuiltinPolyfill transform to implement it for all backends.
Update the uniformity analysis with special-case tags for the builtin.
Fixed: tint:1780
Change-Id: I95786dff4df70a0b16ed1c53b853b5d0ec6bc501
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/114862
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: James Price <jrprice@google.com>
Kokoro: James Price <jrprice@google.com>
Do more math on the CPU to avoid per-fragment ALU operations.
Use a mat3x2 instead of mat2x3 to avoid padding.
Fixed: dawn:1614
Change-Id: Ib0e0f7d44ed9aa16eaca712f6553214fad141feb
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/116060
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Brandon1 Jones <brandon1.jones@intel.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Change-Id: I3e2d0f4e00e10ea221c1a760775550f4a0374b3b
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/114420
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Stephen White <senorblanco@chromium.org>
We use WGSL to visualize the AST. Make sure we don't hide anything.
Bug: tint:1776
Change-Id: Iedd7ca797fb745d9db7d0aba8a5718039241afbb
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/112602
Reviewed-by: Dan Sinclair <dsinclair@chromium.org>
Commit-Queue: Ben Clayton <bclayton@google.com>
Kokoro: Ben Clayton <bclayton@google.com>
Auto-Submit: Ben Clayton <bclayton@google.com>
This CL fix the extractBits polyfill, used for D3D12 backend on windows.
With this patch the related CTS would get pass.
Fixed: tint:1775
Change-Id: I15636bb55af502fff773c19f03b4c3c9e99b63fd
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/112207
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Zhaoming Jiang <zhaoming.jiang@intel.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Adds functionality to Dawn and Tint to rotate and flip-Y external
textures through the shader transform. Tests are included.
Bug: chromium:1316671
Change-Id: I40a6b67eaeb2a348f469e4879eeb585bc40537b2
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/110181
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Brandon1 Jones <brandon1.jones@intel.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
This CL adds const-eval for the `normalize` builtin.
Bug: tint:1581
Change-Id: I6d5ba3e0ba507921137ca90c4caefa9daf88f735
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/111740
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
This CL adds const-eval for the `fma` builtin.
Bug: tint:1581
Change-Id: Ia4df818fec9d5d969b364b2c165400d787a9e275
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/111584
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
This CL adds const-eval for the `distance` builtin.
Bug: tint:1581
Change-Id: Iee3af6474ace8e7baa230156f582f0a372f77cb7
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/111583
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
This CL adds const-eval for the `inverseSqrt` builtin.
Bug: tint:1581
Change-Id: Ieef063416a8033b5fac9396e30c76c20b3360a90
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/111581
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
Stephen White
James Price
Antonio Maiorano
Ben Clayton
Peng Huang
dan sinclair
jchen10
Brandon Jones
Zhaoming Jiang