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2025-06-30Emit sample index when constructing a `OpImageTexelPointer` (#7563)ArielG-NV
* fix #7554 * format code * test ms and non ms texture --------- Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com>
2025-05-22Initial `dyn` keyword support & `-lang 2026` compiler option (#7172)ArielG-NV
fixes: [#7143](https://github.com/shader-slang/slang/issues/7143) fixes: [#7146](https://github.com/shader-slang/slang/issues/7146) Goal of PR: * This PR is part of the larger #7115 refactor to how dynamic dispatch works. * The first step is to add the `-std <std-revision>` flag. * The second step is to provide basic `dyn` keyword support in AST. This does not include `varDecl` support since most of these interactions require `some` keyword support. Future PR(s) goal: * Support `some` keyword in AST. With this we will also implement all varDecl interactions between `dyn` and `some`. * Add IR support for `some` and `dyn`. Breakdown of PR: * most of the logic is in `validateDyn.*`. This was done so that in the future when we implement more features we will have an easy time removing/adding restrictions to `dyn` interfaces. Breaking changes: * As per spec (https://github.com/shader-slang/spec/pull/14/files), any type conforming to a `dyn` interface errors if member list contains one of the following: opaque type, non copyable type, or unsized type. * Due to the breaking change, the test `tests\compute\dynamic-dispatch-bindless-texture.slang` is incorrect. This has been fixed.
2025-05-16Fix HLSL ByteAddressBuffer Load* parameter integer type (#7117)Darren Wihandi
* Fix HLSL ByteAddressBuffer Load* parameter integer type * Fix tests * Fix load with alignment function signature clash * Fix LoadAligned tests
2025-05-15Add checking for hlsl register semantic. (#7118)Yong He
* Add checking for hlsl register semantic. * Fix. * Fix test. * Fix switch error. * Fix tests.
2025-05-12cuda: Add more formats for texture read/write (#7012)Mukund Keshava
* WiP: Add more formats for texture reads * fix test * format code * add float2/float4 versions for 1D and 3D as well * fixed review comment * fix review comments --------- Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com> Co-authored-by: Ellie Hermaszewska <ellieh@nvidia.com>
2025-05-05Add a new capability hlsl_2018 that avoid using select/and/or (#7003)Jay Kwak
Co-authored-by: Yong He <yonghe@outlook.com>
2025-04-30Add subscript operator support in cuda (#6830)Mukund Keshava
* cuda: Add support for subscript operator This CL adds support for the subscript operator for Read Only textures in cuda. Also adds a test for this. Fixes #6781 * format code * fix review comments * format code --------- Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com> Co-authored-by: Ellie Hermaszewska <ellieh@nvidia.com>
2025-04-24update slang-rhi (#6587)Simon Kallweit
* update slang-rhi submodule * slang-rhi API changes * disable agility sdk * fix texture creation * update formats in tests * Extent3D rename * use 1 mip level for 1D textures for Metal * fix texture upload * update to latest slang-rhi * update slang-rhi * format code * update slang-rhi * do not run texture-intrinsics test on metal * update slang-rhi * deal with failing tests * fix more tests * update slang-rhi --------- Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com> Co-authored-by: Simon Kallweit <simon.kallweit@gmail.com>
2025-04-12Add slang-test check for D3D11 double support (#6761)aidanfnv
Fixes #6171 This commit adds logic for reporting double support to the d3d11 backend, for running tests on GPUs that do not support D3D11_FEATURE_DOUBLES, and add checks for that support to tests that require the feature.
2025-04-01Add GetDimensions support for CUDA (#6718)Mukund Keshava
* Add GetDimensions support for CUDA This CL adds GetDimensions support for cuda by using the PTX instructions. Currently, PTX only supports getting width, height and depth. This CL also adds a new test to test this support. Fixes #5139 * format code --------- Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com>
2025-03-17Add error diagnostic vectors and matrices with disallowed element types (#6596)Anders Leino
- Add the diagnostic messages, and code to emit them - Add some tests This helps to address issue #6183.
2025-03-12Migrate render-test away from deprecated compile request API (#6514)Anders Leino
* Add a simple interface parameter test Since there's no documentation, it's nice to have a simple test case in order to experiment with this feature of the testing framework. * Add shader entry point attributes to tests * Fix specialization arguments for tests - Add some missing arguments - Rremove one extraneous argument. * Stop using deprecated compile request in render-test Use a session object instead of the deprecated compile request object. This closes issue #4760.
2025-03-06Update SPIRV-Tools and fix new validation errors. (#6511)Yong He
* Update SPIRV-Tools and fix new validation errors. * Implement pointers for glsl target. * Reworked packStorage/unpackStorage code gen to operate on pointers rather than values.
2025-02-28Prepare for render test api migration (#6498)Anders Leino
* Remove tests/compute/dump-repro The -load-repro option is no longer maintained. This helps to address issue #4760. * Rename ShaderCompilerUtil::Output::session to globalSession * Remove the load-repro codepath * Lifetime bugfix
2025-02-27update slang-rhi (shader object refactor) (#6251)Simon Kallweit
* remove unused resource * define buffer data * add vs2022 build presets * update slang-rhi API usage * update slang-rhi --------- Co-authored-by: Yong He <yonghe@outlook.com>
2025-02-07Use and() and or() functions for logical-AND and OR (#6310)Jay Kwak
* Use and() and or() functions for logical-AND and OR With this commit, Slang will emit function calls to `and()` and `or()` for the logical-AND and logical-OR when the operands are non-scalar and the target profile is SM6.0 and above. This is required change from SM6.0. For WGSL, there is no operator overloadings of `&&` and `||` when the operands are non-scalar. Unlike HLSL, WGSL also don't have `and()` nor `or()`. Alternatively, we can use `select()`.
2025-02-05Feature/initialize list side branch (#6058)kaizhangNV
* SP004: implement initialize list translation to ctor - We synthesize a member-wise constructor for each struct follow the rules described in SP004. - Add logic to translate the initialize list to constructor invoke - Add cuda-host decoration for the synthesized constructor - Remove the default constructor when we have a valid member init constructor - Disable -zero-initialize option, will re-implement it in followup (#6109). - Fix the overload lookup issue When creating invoke expression for ctor, we need to call ResolveInvoke() to find us the best candidates, however the existing lookup logic could find us the base constructor for child struct, we should eliminate this case by providing the LookupOptions::IgnoreInheritance to lookup, this requires us to create a subcontext on SemanticsVisitor to indicate that we only want to use this option on looking the constructor. - Do not implicit initialize a struct that doesn't have explicit default constructor. Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com>
2025-01-15Implement AnyValue marshalling for 8-bit integers (#6059)Julius Ikkala
* Implement anyvalue marshalling for 8-bit integers * Fix missing offset from int8/uint8 case * Disable anyvalue 8-bit test for DXIL Because it doesn't support 8-bit values anyway. --------- Co-authored-by: Yong He <yonghe@outlook.com>
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>
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
2024-12-06Support specialization constant on WGSL and Metal. (#5780)Yong He
2024-12-06Implement explciit binding for metal and wgsl. (#5778)Yong He
* Respect explicit bindings in wgsl emit. * Implement explciit binding generation for metal and wgsl. * Update toc. * Fix warnings in tests. * Fix tests. --------- Co-authored-by: Ellie Hermaszewska <ellieh@nvidia.com>
2024-12-04WGPU: Add new test and explanation for disabled test (#5731)Anders Leino
* Add buffer swizzle store test using structured buffers This helps to address #5612 * WGPU: Add explanation for tests/bugs/buffer-swizzle-store.slang This closes #5612. * Manual formatting fix * format code --------- Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com>
2024-12-02Varying inputs and outputs for wgsl (#5669)Ellie Hermaszewska
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>
2024-11-22Don't treat StrcturedBuffer<IFoo> as a specializable param. (#5645)Yong He
* Don't treat StrcturedBuffer<IFoo> as a specializable param. * Fix RHI.
2024-11-22Add explanation for disabled WGPU tests (#5628)Anders Leino
2024-11-21Refresh of disabled WGPU tests (#5614)Anders Leino
Some tests are now passing and are enabled. Other tests are still failing, but are given comments categorizing the failures. Tests in the 'Not supported in WGSL' category are also removed from the expected failures list. (Though they are still kept disabled for WebGPU, of course.) This closes #5519.
2024-11-20Enable WGPU texture sampling test (#5617)Anders Leino
* Limit number of MIP levels on 1d textures to be 1 This avoids running into a WebGPU limitation, and helps to address issue #4943. * Update Slang-RHI to get WGPU fixes * Enable WGPU texture sampling test This helps to address issue #4943. --------- Co-authored-by: Yong He <yonghe@outlook.com>
2024-11-14Insert some casts for WGSL texture attribute queries (#5560)Anders Leino
* Add new texture sampling test for WebGPU There are no 1d array textures in WGSL, so add texture-sampling-no-1d-arrays.slang based on texture-sampling.slang, but without 1d texture arrays. This helps to address issue #4943. * Insert needed conversion when querying texture attributes in WGSL This helps to address issue #4943. --------- Co-authored-by: Yong He <yonghe@outlook.com>
2024-11-13Various fixes to enable some WGSL graphics tests (#5548)Anders Leino
* Update Slang-RHI to get WGPU backend fixes * render-test: Use device local memory type for vertex buffers This helps to avoid https://github.com/shader-slang/slang-rhi/issues/104 * Fix bug in WGSL emitter layout code. There was a "kinds" vs. "kind flags" mismatch, and also getBindingOffsetForKinds was not being used. This patch enables a bunch of tests for WGPU. This helps to address issue #4943. * format code --------- Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com>
2024-11-07Enable a bunch of WGPU tests (#5513)Anders Leino
This closes issue #5505.
2024-11-06Fix WGSL parameter block binding. (#5500)Yong He
* Fix WGSL parameter block binding. * Re-enable tests. * Update failure list. * Fix entrypoint parameters. * Update tests. * Enable stat-var test.
2024-11-06[WGSL] Enable arbitrary arrays in uniform buffers. (#5497)Yong He
* [WGSL] Enable arbitrary arrays in uniform buffers. * format code * Undo irrelevant change and fixups. * Update expected failure list. * Fix. * Rename. --------- Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com>
2024-11-06Make various parameters and return types require specialization when ↵Anders Leino
targeting WGSL (#5483) Structured buffer types translate to array types in the WGSL emitter. WGSL doesn't allow passing runtime-sized arrays to functions. Similarly for pointers to texture handles. Also, structured buffers (runtime-sized arrays) cannot be returned in WGSL. This closes issue #5228, issue #5278 and issue #5288 by enabling specialized functions to be generated in these cases, in order to work around these constraints.
2024-11-05Legalize the Entry-point for WGSL (#5498)Jay Kwak
* 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. --------- Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com>
2024-11-05Fix system semantics of SV_GroupIndex (#5496)kaizhangNV
Close the issue #4940.
2024-11-02Revert uint<->int implicit cast cost to prefer promotion to unsigned. (#5480)Yong He
2024-11-01Enable a few more WGPU tests (#5476)Anders Leino
* Enable tests/compute/func-cbuffer-param * Enable tests/language-feature/tuple/tuple-parameter.slang
2024-11-01Update Slang-RHI again to get more WGPU fixes (#5475)Anders Leino
This fixes a teardown crash, and a buffer usage mismatch issue during bind group creation. These Slang-RHI fixes allow several WGPU tests to be enabled: - tests/compute/column-major.slang - tests/compute/constant-buffer-memory-packing.slang - tests/compute/matrix-layout.hlsl - tests/compute/non-square-column-major.slang - tests/compute/row-major.slang - tests/hlsl/packoffset.slang This helps to address issue #5222.
2024-10-17Cleanup atomic intrinsics. (#5324)Yong He
* Cleanup atomic intrinsics. * Fix. * Fix glsl. * Remove hacky intrinsic expansion logic for glsl image atomics. * Fix all tests. * Fix. * Add `InterlockedAddF16Emulated`. * Fix glsl intrinsic. * Fix.
2024-10-15Enable WebGPU tests in CI (#5239)Anders Leino
2024-10-11WGSL: Enable load & store from byte-addressible buffers (#5252)Anders Leino
2024-10-08WGSL emitter: Specify private address space for global non-handle variable ↵Anders Leino
declarations (#5236) Closes issue #5229.
2024-10-07Add WGSL support for slang-test (#5174)Anders Leino
* 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. --------- Co-authored-by: Yong He <yonghe@outlook.com>
2024-09-05Respect matrix layout in uniform and in/out parameters for HLSL target. (#5013)Yong He
* Respect matrix layout in uniform and in/out parameters for HLSL target. * Update test. * Fix test. * fix test. * Fix metal layout calculation. * Fix compile error. * Fix compiler error. --------- Co-authored-by: Yong He <yhe@nvidia.com>
2024-08-30Draft: integrate slang-rhi (#4970)Simon Kallweit
* add slang-rhi submodule * refactor render-test to use slang-rhi and remove OpenGL support * remove -vk -glsl tests * remove gl test * disable failing test * allow recursive submodules in github actions * update slang-rhi * update slang-rhi --------- Co-authored-by: Yong He <yonghe@outlook.com>
2024-08-14Do not zero-initialize groupshared and rayquery variables (#4838)ArielG-NV
* Do not zero-initialize groupshared and rayquery variables Fixes: #4824 `-zero-initialize` option will explicitly not: 1. Set any groupshared values to defaults 2. Set any rayQuery object to a default state (currently invalid code generation) * grammer * disallow groupshared initializers disallow groupshared initializers & adjust tests accordingly * remove disallowed groupshared-init expression * do not default init if non-copyable --------- Co-authored-by: Yong He <yonghe@outlook.com>
2024-08-14Issue/legalize resource (#4769)kaizhangNV
* Fix the issue that NonUniformResourceIndex is ignored Fix the issue that after `specializeFunctionCalls`, `NonUniformResourceIndex` is ignored in the generated specialized function. The reason is that if the function has a non-uniform resource parameter, we will legalize it by replacing the resource parameter with a index, and indexing of the resource will be moved inside the specialized function. e.g. ``` void func(ResourceType resource) { ... } func(resource[NonUniformResourceIndex(0)]) ``` will be specialized into ``` void func(int index) { resource[index]; } func(0); ``` In this case, inside the function, we will loose the information about whether the resource is a non-uniform. So we add the handling for this corner case by adding insert a `NonUniformResourceIndex` into the specialized function: ``` void func(int index) { int nonUniformIdx = NonUniformResourceIndex(index); resource[nonUniformIdx]; } ``` * Fix the issue that arguments mismatch after specilization callsite specializeCall() call could cause arguments mismatch with the parameters of the specialized function. For example, if the function parameter contains a resource type ``` void func(ResourceType res) { ... } int index = ... func(resources[index]); ``` This will be specialized into ``` void func(int index) { resources[index] } int index = ... func(index); ``` However, if we have more than 1 call sites, and the other call site doesn't use `int` as the index, e.g. ``` uint index = ... func(resources[index]); ``` this call site will be specialized into ``` uint index = ... func(index); ``` this will be invalid, because the argument doesn't match the parameter. so we just add the data type of the new arguments into the function key such that For the uniformity info, we add a new attribute "IROp_NonUniformAttr", so we will form a IRAttributedType that encodes both uniformity and data type, and use it as the key of call info. So if there is call site using the different data type for the resource index, we will specialize a new function for this. * Handle the intCast and uintCast operation Since after intCast/uintCast of nonuniformIndex, it's still a nonuniformIndex. So we will handle this case as well. Also, add a new test to cover this.
2024-08-06Support an Upper-case variant of [NumThreads] and [Shader] (#4780)Jay Kwak
Closes #4746. This commit adds a support for "NumThreads" and "Shader" attribute keyword, which is in CamelCasing starting with an upper case letter. The attribute keywords in HLSL are case-insensitive. As an example, one of D3D documents says, "The attribute name "Shader" is case insensitive." https://microsoft.github.io/DirectX-Specs/d3d/WorkGraphs.html Slang, however, doesn't support the case-insensitivity. They should be all lower-case or CamelCasing starting with an upper case.
2024-07-19Support parameter block in metal shader objects. (#4671)Yong He
* Support parameter block in metal shader objects. * Ingore parameter block tests on devices without tier2 argument buffer. * Fix warning. * Fix texture subscript test. --------- Co-authored-by: Yong He <yhe@nvidia.com>
generated by cgit v1.2.3 (git 2.39.1) at 2026-06-29 07:58:47 +0000