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2025-01-14Implement specialization constant support in numthreads / local_size (#5963)Julius Ikkala
* Allow using specialization constants in numthreads attribute * Add support for GLSL local_size_x_id syntax * Fix overeager specialization constant parsing * Add diagnostics for specialization constant numthreads * Remove unused variable * Fix local_size_x_id not finding existing specialization constant * Allow materializeGetWorkGroupSize to reference specialization constants * Use SpvOpExecutionModeId for modes that require it * Cleanup specialization constant numthreads code * Add tests for specialization constant work group sizes * Fix implicit Slang::Int -> int32_t cast * Fix querying thread group size in reflection API --------- Co-authored-by: Yong He <yonghe@outlook.com>
2025-01-14Fix #5354, change diagnostic definition error message and expect output in ↵wij
test (#6067) Co-authored-by: Yong He <yonghe@outlook.com>
2025-01-14Fix simplify if-else (#6077)cheneym2
* Fix simplify if-else The if-else optimization observes that at if at least one true/false block is merely an unconditional jump to the after block, that the whole if-else can be replaced with a jump to the after block. But it's important to copy the phi arguments from the aforementioned unconditional jump, rather than what is present in the 'true' block, since the 'true' block might actually just be the after block itself. Below, the ifElse() would be replaced with an unconditional jump to block %39, but with the `phi` arguments copied from the branch to %29, which is an unrelated block. ifElse(%38, %39, %40, %39) block %40: unconditionalBranch(%39) block %39: unconditionalBranch(%29, 0 : Float) block %29( [nameHint("ret")] param %ret : Float): Fixes issue #5972 * format code --------- Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com> Co-authored-by: Yong He <yonghe@outlook.com>
2025-01-13Don't initialize temp var for out parameters. (#6076)Sai Praveen Bangaru
2025-01-10Fix CUDA reflection for acceleration structure handle size. (#6055)Yong He
2025-01-10Fix `markNonContextParamsAsSideEffectFree`. (#6054)Yong He
2025-01-10WGSL: Convert signed vector shift amounts to unsigned (#6023)Anders Leino
* WGSL: Fixes for signed shift amounts - Handle the case of vector shift amounts - Closes #5985 - Move handling of scalar case from emit to legalization - Add tests for bitshifts. * Move the binary operator legalization function to a common place * Metal: Legalize binary operations Closes #6029. * Fix Metal filecheck test The int shift amounts are now converted to unsigned. * format code --------- Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com> Co-authored-by: Yong He <yonghe@outlook.com>
2025-01-10Fix potential test failures due to SPIRV validation failure (#6047)Jay Kwak
There are a few tests that are currently passing but could fail when conditions change little bit. When slang-test runs with `test-server`, the spirv validation fails and the test gets reported as failed even though they are actually passing. To avoid the potential problem, this commit adds an empty entry point. Co-authored-by: Yong He <yonghe@outlook.com>
2025-01-10Fix Metal type layout reflection for nested parameter blocks. (#6042)Yong He
2025-01-10Initial implementation of SP#015 `DescriptorHandle<T>`. (#6028)Yong He
* Initial implementation of `ResourcePtr<T>`. * Update docs * Fix build error. * Add more discussion. * Update documentation. * Update TOC. * Fix. * Fix. * Add test case for custom `getResourceFromBindlessHandle`. * Add namehint to generated descriptor heap param. * Fix. * Fix. * format code * Rename to `DescriptorHandle`, and add `T.Handle` alias. * Fix compiler error. * Fix. * Fix build. * Renames. * Fix documentation. * Documentation fix. --------- Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com>
2025-01-10Add exhaustive associativity test for WGSL (#6056)Anders Leino
This closes #6005.
2025-01-09Add CalculateLevelOfDetail* overloads for comparison samplers (#6018)Darren Wihandi
* add CalculateLevelOfDetail* intrinsics for comparison samplers * fix dx12 test * fix metallib test * fix merge conflict --------- Co-authored-by: Yong He <yonghe@outlook.com>
2025-01-09Support a storage class, NodePayloadAMDX, for SPIRV work-graphs (#6052)Jay Kwak
In order to unblock experiments with SPIRV work-graphs, Slang needs to support the storage class, `NodePayloadAMDX`. Note that this commit is only to support a storage class, `NodePayloadAMDX`. There are many parts required for work-graphs hasn't been implemented yet. The implementation of `DispatchNodeInputRecord` is not required, but it is implemented mostly for a testing purpose. Closes #6049 Co-authored-by: Yong He <yonghe@outlook.com>
2025-01-10Fix implicit string conversion breaking NativeStrings (#6035)Julius Ikkala
* Fix implicit string conversion breaking NativeStrings * Allow string literals to coerce to either string type * Add test for CPU string passing --------- Co-authored-by: Yong He <yonghe@outlook.com>
2025-01-09[Auto-diff] Overhaul auto-diff type tracking + Overhaul dynamic dispatch for ↵Sai Praveen Bangaru
differentiable functions (#5866) * Overhauled the auto-diff system for dynamic dispatch * More fixes * remove intermediate dumps * Update slang-ast-type.h * More fixes + add a workaround for existential no-diff * Update reverse-control-flow-3.slang * remove dumps * remove more dumps * Delete working-reverse-control-flow-3.hlsl * Cleanup comments + unused variables * More comment cleanup * Add support for lowering `DiffPairType(TypePack)` & `MakePair(MakeValuePack, MakeValuePack)` * Fix array of issues in Falcor tests. * Update slang-ir-autodiff-pairs.cpp * More fixes for Falcor image tests * Small fixups. --------- Co-authored-by: Yong He <yonghe@outlook.com>
2025-01-08Add parentheses to make precedence explicit (#6030)Anders Leino
* Add parentheses to make precedence explicit Add parentheses for a few cases that Dawn/Tint (WGSL compiler) complains about. Closes #6005. * format code --------- Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com> Co-authored-by: Yong He <yonghe@outlook.com>
2025-01-08Add SampleCmpLevel intrinsics (#6004)Darren Wihandi
* add SampleCmpLevel intrinsics * update tests * fix typo * fix broken glsl test * refactor SampleCmpLevelZero * fix metallib test * fix broken test on dx12 --------- Co-authored-by: Yong He <yonghe@outlook.com>
2025-01-07Lower varying parameters as pointers instead of SSA values. (#5919)Yong He
* Add executable test on matrix-typed vertex input. * Fix emit logic of matrix layout qualifier. * Pass fragment shader varying input by constref to allow EvaluateAttributeAtCentroid etc. to be implemented correctly.
2025-01-07 Check whether array element is fully specialized (#6000)kaizhangNV
* Check whether array element is fully specialized close #5776 When we start specialize a "specialize" IR, we should make sure all the elements are fully specialized, but we miss checking the elements of an array. This change will check the it. * add test * add all wrapper types into the check * add utility function to check if the type is wrapper type --------- Co-authored-by: zhangkai <zhangkai@zhangkais-MacBook-Pro.local> Co-authored-by: Yong He <yonghe@outlook.com>
2025-01-07Fix some robustness issues in the examples (#5984)Anders Leino
* examples: Make hello-world example exit gracefully if VK cannot be initialized - Check if VK API function pointers are valid before using them - Return 0 and exit if VK initialization fails - Enable hello-world example * examples: Fixes for ray-tracing examples - Assert that accelleration structure buffer is not nullptr - Check if buffer creation succeeded before proceeding - This makes initialization not hang, but it still fails. Therefore, the test expectations are just updated to point to another issue. - Enable ray-tracing tests on Windows
2025-01-07Use disassemble API from SPIRV-Tools (#6001)Jay Kwak
* Use disassemble API from SPIRV-Tools This commit uses C API version of SPIRV disassemble function rather than calling spirv-dis.exe. This allows us to use a correct version of SPIRV disassble function that Slangc.exe is using. The implementation is mostly copied from external/spirv-tools/tools/dis/dis.cpp, which is a source file for building spirv-dis.exe. This commit also includes a fix for a bug in RPC communication to `test-server`. When an RPC connection to `test-server.exe` is reused and the second test abruptly fails due to a compile error or SPIRV validation error, the output from the first test run was incorrectly reused as the output for the second test. This commit resets the RPC result before waiting for the response so that even when the RPC connection is erratically disconnected, the result from the previous run will not be reused incorrectly. Some of the tests appear to be relying on this type of behavior. By using an option, `-skip-spirv-validation`, the RPC connection will continue without an interruption.
2025-01-02Correct IR generation for no-diff pointer type (#5976)kaizhangNV
* Correct IR generation for no-diff pointer type Close #5805 There is an issue on checking whether a pointer type parameter is no_diff, we should first check whether this parameter is an Attribute type first, then check the data type. In the back-propagate pass, for the pointer type parameter, we should load this parameter to a temp variable, then pass it to the primal function call. Otherwise, the temp variable will no be initialized, which will cause the following calculation wrong.
2025-01-01Fix reflection for metal vector [[id]] location. (#5943)Yong He
2024-12-31Fix `getInheritanceInfo` for `ExtractExistentialType`. (#5971)Yong He
2024-12-30Check for undefined %id in spirv_asm block. (#5966)Yong He
2024-12-30Add `RaytracingAccelerationStructure::__init(uint64_t)`. (#5967)Yong He
2024-12-30Check mismatching method parameter direction against interface declaration. ↵Yong He
(#5964)
2024-12-30Fix requirement candidate lookup to prefer decls in the same paraent as the ↵Yong He
inheritance decl. (#5965)
2024-12-28Implement HLSL pack/unpack math intrinsics (#5934)Darren Wihandi
2024-12-26Add packed 8bit builtin types (#5939)Darren Wihandi
* Add packed bytes builtin type * fix test
2024-12-21Fixed stage and result field names in json reflection (#5927)Stan
2024-12-20Check subscript/property accessor for differentiability. (#5922)Yong He
2024-12-20Fix crash during loop unrolling. (#5920)Yong He
2024-12-19Add base vertex and base instance system values (#5918)Darren Wihandi
* Add base vertex and base instance system values * Fixed incorrect stage in tests
2024-12-19Enable more examples in CI (#5915)Anders Leino
* CI: examples: Add support for filtering on platform * Add platform field to example run IDs - Remove the reflection-api entry for Windows. - Add 'aarch64' as platform for all 'macos' entries. - Add 'x86_64' as platform for all other entries. - This will implicitly enable all aarch64 tests for Linux. This helps to address issue #5520.
2024-12-19Add HLSL texture sample with status intrinsics (#5901)Darren Wihandi
* Implement HLSL texture sample with status intrinsics * fix test and cleanup --------- Co-authored-by: Yong He <yonghe@outlook.com>
2024-12-19Report error when generated spirv is empty. (#5899)Yong He
* Report error when generated spirv is empty. * format code --------- Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com> Co-authored-by: Ellie Hermaszewska <ellieh@nvidia.com>
2024-12-19Refresh list of failing examples (#5904)Anders Leino
This helps to address issue #5520.
2024-12-18Check decl nesting for namespaces. (#5910)Yong He
2024-12-18Support explicit `[vk::location(n)]` binding on metal/wgsl. (#5907)Yong He
2024-12-18Allow `Optional`, `Tuple` and `bool` to be used in varying input/output. (#5889)Yong He
* Allow `Optional` and `Tuple` to be used in varying input/output. * Fix. * format code * Fix. * Fix test. * Fix. * enhance test. * Fix. * format code --------- Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com>
2024-12-18Add slang example tests to CI (#5879)Anders Leino
* Examples: Don't proceed if 'initializeBase' fails * Examples: Only access gWindow if it's been initialized * Examples: Free memory from CommandLineToArgvW * Add example run step to CI Lots of examples are still unexpectedly failing, but is one small step towards addressing issue #5520.
2024-12-17Add verification logic on push and specialization constants. (#5887)Yong He
* Add verification logic on push and specialization constants. * format code --------- Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com>
2024-12-17Implement bitcast for 64-bit date type (#5895)kaizhangNV
Close #5470 * implement bitcast for 64-bit date type * Move 'ensurePrelude' to base class to remove duplication * Assert on 'double' type for Metal target, as Metal doesn't have 'double' support
2024-12-16Support matrix negation in metal backend. (#5891)Yong He
2024-12-15Enable exprs for all supported GLSL layout qualifiers (#5857)Darren
2024-12-12Bit extract (#5847)kaizhangNV
* promoting bitfield extraction and insertion to become intrinsics for internal compiler use * removing duplicate intrinsics from glsl.meta.slang * refactor: update function signatures of bitfield extraction and insertion to use uint as the parameter type for offset and bits. --------- Co-authored-by: Nate Morrical <natemorrical@gmail.com> Co-authored-by: Yong He <yonghe@outlook.com>
2024-12-12WGSL: Fix issue where global calls are generated (#5768)Anders Leino
* Split out SPIR-V -specific legalization of global functions This is a refactoring and should not affect generated code. * Move global inst inlining code into separate function This is a refactoring and should not affect generated code. * Take SPIR-V -specific parts out of GlobalInstInliningContext This is a refactoring and should not affect generated code. * Move 'inlineGlobalValues' to generic inlining context This is a refactoring and should not affect generated code. * Move 'setInsertBeforeOutsideASM' to generic inlining context This is a refactoring and should not affect generated code. * Move generic inlining context into own file This is a refactoring and should not affect generated code. * Run global inlining for WGSL as well * Make the 'getOutsideASM' function generic as well * Enable language-feature/constants/static-const-in-generic-interface.slang for WebGPU * Clarify when it's safe to remove and deallocate an IRInst * Remove globals if they're left unused after inlining This closes #5607. * Handle IRGlobalValueRef in C-like emitter * format code --------- Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com>
2024-12-11Fix language server check skipping when explicit module decl exists. (#5845)Yong He
2024-12-12Bump spirv-header/tools/glslang (#5834)Ellie Hermaszewska
* Back out "Update SPIRV submodules (#5815)" This backs out commit e50aac13e2c161d672b137a62f6d66820d0f9ff1. * Use upstream spirv-tools * Fix bump-glslang.sh for newer versions of spirv-tools * Use upstream glslang * Add --do-fetch option to bump glslang * Bump glslang and friends Supersedes https://github.com/shader-slang/slang/pull/5815 * Regenerate glslang and spirv-tools outputs * Fixes to slang-glslang * Correct spirv intrinsic for OpImageSampleFootprintNV Note that this currently fails validation with the following error: ``` error: line 145: Result <id> from OpSampledImage instruction must not appear as operand for OpImageSampleFootprintNV, since it is not specified as taking an OpTypeSampledImage. Found result <id> '55[%sampledImage]' as an operand of <id> '56[%resultVal]'. %sampledImage = OpSampledImage %54 %51 %40 ``` This seems to be in error as the spec for *SPV_NV_shader_image_footprint* states that "Sampled Image must be an object whose type is OpTypeSampledImage" https://refined-github-html-preview.kidonng.workers.dev/KhronosGroup/SPIRV-Registry/raw/refs/heads/main/extensions/NV/SPV_NV_shader_image_footprint.html glslang also seems to fail with the same validation error * Fix spv storage class test
generated by cgit v1.2.3 (git 2.39.1) at 2026-06-05 11:02:45 +0000