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* Add parentheses to make precedence explicit
Add parentheses for a few cases that Dawn/Tint (WGSL compiler) complains about.
Closes #6005.
* format code
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Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com>
Co-authored-by: Yong He <yonghe@outlook.com>
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* Respect explicit bindings in wgsl emit.
* Implement explciit binding generation for metal and wgsl.
* Update toc.
* Fix warnings in tests.
* Fix tests.
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Co-authored-by: Ellie Hermaszewska <ellieh@nvidia.com>
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Closes https://github.com/shader-slang/slang/issues/5067
New tests, covering what's declared supported in the WGSL support docs
- tests/wgsl/semantic-coverage.slang
- tests/wgsl/semantic-depth.slang
- tests/wgsl/semantic-dispatch-thread-id.slang
- tests/wgsl/semantic-group-id.slang
- tests/wgsl/semantic-group-index.slang
- tests/wgsl/semantic-group-thread-id.slang
- tests/wgsl/semantic-instance-id.slang
- tests/wgsl/semantic-is-front-face.slang
- tests/wgsl/semantic-position.slang
- tests/wgsl/semantic-sample-index.slang
- tests/wgsl/semantic-vertex-id.slang
WGSL enabled existing tests:
- tests/compute/compile-time-loop.slang
- tests/compute/constexpr.slang
- tests/compute/discard-stmt.slang
- tests/metal/nested-struct-fragment-input.slang
- tests/metal/nested-struct-fragment-output.slang
- tests/metal/nested-struct-multi-entry-point-vertex.slang
- tests/metal/no-struct-vertex-output.slang
- tests/metal/sv_target-complex-1.slang
- tests/metal/sv_target-complex-2.slang
- tests/bugs/texture2d-gather.hlsl
- tests/render/cross-compile-entry-point.slang
- tests/render/nointerpolation.hlsl
- tests/render/render0.hlsl
- tests/render/cross-compile0.hlsl
- tests/render/imported-parameters.hlsl
- tests/render/unused-discard.hlsl
Can't be enabled due to missing wgsl features
- tests/compute/texture-sampling.slang
Co-authored-by: Yong He <yonghe@outlook.com>
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* Fix wgsl legalization around __ref parameter.
* Add intrinsic and test case.
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* [WGSL] Enable arbitrary arrays in uniform buffers.
* format code
* Undo irrelevant change and fixups.
* Update expected failure list.
* Fix.
* Rename.
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Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com>
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* Legalize the Entry-point for WGSL
The return type of the entry-point needs to be legalized when targeting
WGSL.
This commit flattens the nested-structs of the return type and the input
parameters of the entry-point.
Most of code is copied from the legalization code for Metal. The
following functions are exactly same to the implementation for Metal or
almost same.
- flattenInputParameters() : 136 lines
- reportUnsupportedSystemAttribute() : 7 lines
- ensureResultStructHasUserSemantic() : 46 lines
- struct MapStructToFlatStruct : 176 lines
- flattenNestedStructs() : 95 lines
- maybeFlattenNestedStructs() : 42 lines
- _replaceAllReturnInst() : 19 lines
- _returnNonOverlappingAttributeIndex() : 16 lines
- _replaceAttributeOfLayout() : 23 lines
- tryConvertValue() : 41 lines
- legalizeSystemValueParameters() : 11 lines
They need to be refactored to reduce the duplication later.
The test case, `tests/compute/assoctype-lookup.slang`, had a bug that
the compute shader was trying to use the varying input/output with the
user defined semantics.
This commit removes the user defined semantics, because the compute
shaders cannot use the user defined semantics.
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Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com>
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* Add support for write-only textures.
* Fix capabilities.
* Fix implementation.
* Fix.
* format code
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Co-authored-by: Ellie Hermaszewska <ellieh@nvidia.com>
Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com>
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* Overhaul docgen tool and setup CI to generate stdlib reference.
* Fix build error.
* Write parsed doc for all decls.
* fix.
* fix callout.
* Fix.
* Fix comment.
* Fix.
* Delete obsolete doc tests.
* Fix.
* Categorize functions and types.
* Fix CI.
* Update comments.
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* Use the assembly description as target when disassembling
I believe this is a bugfix.
It seems to have worked before because up until the WGSL case, the disassembler has been
the same executable as the one producing the binary to be disassembled.
* Add Tint as a downstream compiler
This closes issue #5104.
* Add downstream compiler for Tint.
* Tint is wrapped in a shared library, 'slang-tint' available from [1].
* The header file for slang-tint.dll is added in external/slang-tint-headers.
* Add some boilerplate for WGSL targets.
* Add an entry point test for WGSL.
[1] https://github.com/shader-slang/dawn/releases/tag/slang-tint-0
* Add WGSL_SPIRV as supported target for Glslang
* Add WebGPU support to slang-test
This helps to address issue #5051.
* Disable lots of crashing compute tests for 'wgpu'
This closes issue #5051.
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Co-authored-by: Yong He <yonghe@outlook.com>
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* Implement texture_storage_Xd in WGSL
This commit implements `texture_storage_Xd` in WGSL, which is similar
to RWTextureXD in HLSL.
It is intresting that `texture_storage_Xd` doesn't take the shader
type as its input argument at all.
Instead, it takes "texel format" enum value as its first template
parameter, which can be found here:
https://www.w3.org/TR/WGSL/#storage-texel-formats
As an example, `texture_storage_2d<rg32uint, read_write>` expects
vec4<u32> as a value type for `Load` and `Store`, where Z-component
will be ignored and treated as zero and W-component will be treated
always as 1. The type `u32` is inferred from the enum value `rg32uint`.
Note that the number of component is always fixed to 4 regardless how
many components are actually stored.
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* WGSL texture support for depth and multisampled
This commit fixes a few issues with WGSL texture intrinsics.
- static_assert-s are corrected.
- Gather functions work properly with depth textures
- Load functions work properly with depth textures and multisampled
textures
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This PR implements the texture gather functions for WGSL.
The pattern was very similar to how Metal was implemented.
Before copy and paste from the Metal implementation, I had to
clean up the Metal implementation to make it more readable
and maintainable.
Gather functions are available only for 2D and 3D textures.
Their `array` and `depth` variants may or may not be supported depending on the target.
`static_assert` ensures that Gather functions are available only for 2D and 3D textures.
Removed incorrect use of "$p" argument for targeting GLSL.
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* Implemented Combined-texture for WGSL
* Remove unnecessary comment
* Limit to std430 layout
* Fix compiler warning for unused variable
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Co-authored-by: Yong He <yonghe@outlook.com>
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This commit implements all of the texture intrinsics for WGSL except "Gather" and sampler-less.
They will be implemented in a separate PR.
A few things to note:
- texture sampling functions are available only for the fragment shader stage; not for compute
- WGSL doesn't have any functions similar to CalculateLevelOfDetail or CalculateLevelOfDetailUnclamped.
- WGSL doesn't have a function overlaoding for textureSample with "clamp" or "status" arguments.
- WGSL doesn't support Load operation with offset for texture_multisampled_XX and texture_storage_XX.
- WGSL supports only four types of depth textures: 2D, 2D_array, cube and cube_array.
- WGSL doesn't support "offset" variants for cube and cube_array.
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* Implement math intrinsics for WGSL
This commit implements math related intrinsics and a few others for
WGSL.
The implementation is based on the following doc,
https://www.w3.org/TR/WGSL
slang-test was looking for the downstream compiler for WGSL even though
it is not used.
This commit adds a minimal change to avoid the crash.
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