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* Fix GetDimensions to use mipLevel for SPIRV (#8065)Jay Kwak2025-08-06
| | | | | | | | | * Fix GetDimensions to use mipLevel for SPIRV * format code (#84) --------- Co-authored-by: slangbot <ellieh+slangbot@nvidia.com>
* Fix 7441: CUDA boolean vector layout to use 1-byte elements (#7862)Harsh Aggarwal (NVIDIA)2025-08-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Fix 7441: CUDA boolean vector layout to use 1-byte elements Boolean vectors (bool1, bool2, bool3, bool4) were incorrectly implemented as integer-based types using 4 bytes per element instead of actual 1-byte boolean elements on CUDA targets. Changes: - Update CUDA prelude to define boolean vectors as structs with bool fields instead of typedef aliases to integer vectors - Implement CUDALayoutRulesImpl::GetVectorLayout to use 1-byte alignment for boolean vectors, matching actual CUDA memory layout behavior - Update make_bool functions to populate struct fields correctly This ensures boolean vectors have the same memory layout as bool[4] arrays: - bool1: 1 byte (was 4 bytes) - bool2: 2 bytes (was 8 bytes) - bool3: 3 bytes (was 12 bytes) - bool4: 4 bytes (was 16 bytes) Fixes memory layout mismatch between Slang reflection API and actual CUDA compilation, achieving 75% memory savings for boolean vector usage. * Fix CI issues - Add and update associated functions and operators * Make boolX same as uchar * Use align construct on struct for boolX * Improve Test case for robust alignment checks * Formatting * Disable selected slangpy tests * add metal check which is slightly different than cuda * Test-1 * Test-2 * Test-3 * Test-4 * ReflectionChange * cleanup and update * _slang_select with plain bool is needed for reverse-loop-checkpoint-test
* Fix WGSL sign function to return correct int type instead of float (#7739)Copilot2025-07-16
| | | | | | | | | | | | | | | | | | | | * Initial plan * Fix WGSL sign function to return int type properly Co-authored-by: csyonghe <2652293+csyonghe@users.noreply.github.com> * Add vector version check for WGSL sign function test Co-authored-by: csyonghe <2652293+csyonghe@users.noreply.github.com> * Fix FileCheck order in WGSL sign test - use DAG for order-independent checking Co-authored-by: csyonghe <2652293+csyonghe@users.noreply.github.com> --------- Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: csyonghe <2652293+csyonghe@users.noreply.github.com>
* Address structured buffer `GetDimensions` issues for WGSL, GLSL and SPIRV ↵Darren Wihandi2025-05-16
| | | | | | | | | | | | | | | | | | | | | | | (#7010) * Fix structured buffer get dimensions * Further fixes and added tests * Remove unnecessary include * Fix test issues * attempt to fix wgpu crash * test remove half usage in test * attempt to fix WGPU test issue * Another attempt to fix WGSL test - make test similar to the existing GetDimensions test --------- Co-authored-by: Yong He <yonghe@outlook.com>
* Implement GetDimensions for structured buffers on WGSL (#6609)Darren Wihandi2025-03-14
| | | | | | | | | | | | | * Implement structured buffer GetDimensions for WGSL * byte address buffer fix * enable wgsl test and minor fixups * maybe fix get equivalent structured buffer * remove unnecessary include * clean up some code in meta file
* Add inner texture type to reflection json (#6416)Devon2025-02-27
| | | | | | | | | | | | | * Add inner texture type to reflection json * Add expected result of test * Adjust test expected results * Fix ci test result --------- Co-authored-by: Yong He <yonghe@outlook.com>
* Add CalculateLevelOfDetail* overloads for comparison samplers (#6018)Darren Wihandi2025-01-09
| | | | | | | | | | | | | * add CalculateLevelOfDetail* intrinsics for comparison samplers * fix dx12 test * fix metallib test * fix merge conflict --------- Co-authored-by: Yong He <yonghe@outlook.com>
* Add SampleCmpLevel intrinsics (#6004)Darren Wihandi2025-01-08
| | | | | | | | | | | | | | | | | | | * 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>
* Lower varying parameters as pointers instead of SSA values. (#5919)Yong He2025-01-07
| | | | | * 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.
* Fixed stage and result field names in json reflection (#5927)Stan2024-12-21
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* Support nonuniformEXT for GLSL (#5695)Jay Kwak2024-11-29
| | | | | Adding nonuniformEXT intrinsic for GLSL Co-authored-by: Ellie Hermaszewska <ellieh@nvidia.com>
* Use user defined type name in glsl buffer declarations. (#5242)Yong He2024-10-09
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* SPIRV `Block` decoration fixes. (#4303)Yong He2024-06-08
| | | | | | | | | | | | | | | * SPIRV `Block` decoration fixes. - SPIRV does not allow duplicate `Block` decorations. So we shouldn't be generating them. - Also fixes duplication of OpName. - SPIRV and HLSL do not allow ConstantBuffer with trailing unsized arrays. Added a check in the front-end against such code. * Convert failing cross-compile tests to filecheck. --------- Co-authored-by: Jay Kwak <82421531+jkwak-work@users.noreply.github.com>
* Fix race-condition and visual artifacts issues (#4152)kaizhangNV2024-05-10
| | | | | | | | | | | | | | | | | * Fix race-condition and visual artifacts issues In PerformanceProfiler::getProfiler() we return a static object for the profiler implementation, this is not thread-safe, so change it to thead_local. There is still some visual artifacts when using slang as the shading language. We don't know the root cause yet, but found out it's related to our loop inversion algorithm. So stage this feature for now, and turn it into an internal option and default off. We will re-enable it after more investigation on this optimization. File an new issue 4151 to track it. * Add '-loop-inversion' to the few tests
* Fix fmod behavior targetting GLSL and SPIR-V (#4080)Jay Kwak2024-05-02
| | | | | | | | | | | | | | | | | * Fix fmod behavior targetting GLSL and SPIR-V The default implementation of fmod was doing "Modulo" operation when "fmod" in HLSL should do "remainder" operation. * Fix a mistake in `fmod` GLSL target When using __intrinsic_asm, the "if" logic wasn't emitted. "__intrinsic_asm" had to be called from a new function and `fmod` had to call it. Alternatively, I am using `operator?()` to workaround. A similar modification is made to `roundEven()` hoping for a better performance.
* Switch to direct-to-spirv backend as default. (#4002)Yong He2024-04-23
| | | | | | | | | * Switch to direct-to-spirv backend as default. * Fix slang-test. * Fix. * Fix.
* Fix SPIRV for mesh shaders, checks for invalid target code&recursion. (#3788)Yong He2024-03-18
| | | | | | | | | | | | | | | | | | | | | | | | | * Fix #3780. * Fixers #3781. * Add test for #3781. * Diagnose error on unsupported builtin intrinsic types. * Add check for recursion. * Fix. * Fix. * Fix recursion detection. * Fix. * Fix. * Fix recursion logic. * More fix.
* [SPIRV] fix code gen for `SV_Coverage`. (#3718)Yong He2024-03-08
| | | | | | | * [SPIRV] fix code gen for `SV_Coverage`. * Fix #3714, #3699. * Fix.
* Capability type checking. (#3530)Yong He2024-02-02
| | | | | | | | | * Capability type checking. * Fix. --------- Co-authored-by: Yong He <yhe@nvidia.com>
* [SPIRV] Support `globallycoherent` and `[vk::index()]`. (#3488)Yong He2024-01-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | * [SPIRV] Support `globallycoherent` modifier. * Fix. * Disable executable cooperative vector tests. * Update expected failure. * [SPIRV] Emit varying output index decoration. * Add test. * Update tests. * Fix test. * Emit `SpvExecutionModeEarlyFragmentTests`. * Lower `StructuredBuffer<bool>`. * Support globallycoherent on ByteAddressBuffer. --------- Co-authored-by: Yong He <yhe@nvidia.com>
* Update the GetDimension hlsl builtin for spirv path. In case of sampler, a ↵Pankaj Mistry2024-01-02
| | | | combined sampled image needs an OpImage to be generated. (#3424)
* Fix nonuniform decoration on direct-to-spirv backend path. (#3338) (#3417)Pankaj Mistry2023-12-16
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* Unify stdlib `Texture` types into one generic type. (#3327)Yong He2023-11-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Unify Texture types in stdlib into 1 generic type. * Fixes. * Fix. * Fixes. * Fix reflection. * Fix binding reflection. * Add gather intrinsics. * Fix gather intrinsics. * Fix texture type toText. * Fix intrinsic. * fix cuda intrinsic. * Fix project files. * cleanup. * Fix. * Fix. * Fix sampler feedback test. * Fix getDimension intrinsics. * Fix spirv sample image intrinsics. * Fix test. * Fix GLSL intrinsic. * Cleanup. --------- Co-authored-by: Yong He <yhe@nvidia.com>
* Add SPIRV intrinsics for ShaderExecutionReordering and RW/Buffer. (#3252)Yong He2023-10-02
| | | | | | | | | | | | | | | | | * Add SPIRV intrinsics for ShaderExecutionReordering. * Add intrinsics for `Buffer` and `RWBuffer`. * Various spirv fixes. * Marshal bool vector type. * Inline global constants + OpFOrdNotEqual->OpFUnordNotEqual. * Fix. --------- Co-authored-by: Yong He <yhe@nvidia.com>
* Various SPIRV fixes. (#3231)Yong He2023-09-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Various SPIRV fixes. - Geometry shader support (WIP). - Fix texture get dimension and load. - Fold global GetElement(MakeArray/MakeVector) insts. - Call spvopt to inline all functions. - Translate OpImageSubscript. - Emit struct member names and global variable names. - Fix lowering of OpBitNot -> OpNot, instead of OpBitReverse. * Fix test. * Fix geometry shader. * Fix geometry shader emit. * Add atomic Image access test. * Fix tests. * don't fail if spirv-opt fails. * Update comments. * Fix test. * Cleanups. * indentation --------- Co-authored-by: Yong He <yhe@nvidia.com> Co-authored-by: Ellie Hermaszewska <ellieh@nvidia.com>
* SPIR-V image operations (#3163)Ellie Hermaszewska2023-09-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Add __truncate and __sampledType for spirv_asm Allows some texture tests to start passing * add __isVector Currently unused * Add 1-vector legalization pass (WIP) * Add capabilities for image types * neaten instruction dumping * add 1-vector test * Add a couple of cases to vec1 legalization * Remove texture tests from expected failures * comment * regenerate vs projects * Remove redundant define form synchapi emulation * refactoring image methods * All sample functions refactored * Remove incorrect glsl intrinsics Partially addresses https://github.com/shader-slang/slang/issues/3174 * __subscript image ops via writing funcs * Extract texture struct writing from core.meta.slang * Abstract out cuda intrinsic * Remvoe erroneous call to opDecorateIndex * spirv asm IR utils * Correct position of loads for SPIR-V asm inst operands * Raise constructors to global scope during spir-v legalization * Correct snippet output * Implement most texture sampling ops for SPIR-V * Legalize 1-vectors for glsl too * Make SPIR-V inst operands non-hoistable * Better 1-vector legalization * Put textures in ptrs for spirv * insert missing break * Add vec1 legalization test * Add some missing pieces to slang-ir-insts * Greatly neaten vec1 legalization * a * Neaten vec1 legalization * Add image read and write intrinsics for spir-v * Squash warnings * regenerate vs projects * Drop redundant guards * Drop 5 tests from expected failure list * Inst numbering changes to cross compile tests * vec1 legalization tests only on vk * Correct location of asm op emit * Inline constant in spirv-asm * Correct signedness for lane in wave intrinsics * Extract element from float1 for cuda * squash warnings * Neaten spirv-emit * dedupe more capabilities * warnings * neaten assert * comments * comments
* Fix memory barrier intrinsics. (#3166)Yong He2023-08-30
| | | | | | | | | | | | | | | | | | | | | | | * Fix memory barrier intrinsics. Makes them produce the same spirv code as dxc. * Fix. * filecheck barrier test for spirv backend. * Fix glsl intrinsic definition. * Fix intrinsics. * Fix intrinsics. * Fix. * Fix. --------- Co-authored-by: Yong He <yhe@nvidia.com>
* Lower all ByteAddressBuffer uses for SPIRV. (#3143)Yong He2023-08-23
| | | Co-authored-by: Yong He <yhe@nvidia.com>
* Compile append and consume structured buffers to glsl. (#3142)Yong He2023-08-21
| | | | | | | | | | | * Compile append and consume structured buffers to glsl. * Fix. * Update CI config. --------- Co-authored-by: Yong He <yhe@nvidia.com>
* Be more careful about merge blocks during loop inversion (#3136)Ellie Hermaszewska2023-08-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | * fix block eater * Be more careful about merge blocks during loop inversion * Restrict loop inversion to loops without continue jumps * Remove multiple back-edges from loops for SPIR-V * Wiggle cross compile test output * Make loop-inversion more conservative * Allow loops on false side in cfg normalization * Do not set loop continue block during inversion * Add loop inversion test to failing test list for spirv * Simplify single use continue blocks in spirv legalization * wobble expected failure list --------- Co-authored-by: Yong He <yonghe@outlook.com>
* Add loop inversion pass (#2899)Ellie Hermaszewska2023-08-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Generalize collectInductionValues * Support affine transformations of loop index as induction variables * Test for generalized induction value collection * Neaten inductive variable finding * Make types more specific * Add loop inversion pass * Test output changes after loop inversion * Store the type of implication success when finding inductive variables * Test that loop induction finding does not alway succeed * Support chains of additions and branches of additions in induction variable finding * Use c++17 for downstream compilers * Wiggle expected output for cross compile test after loop inversion * Add loop inversion test * Simplify IfElse instructions with a single trivial block * Invert loops with a user inserted break * Limit loop inversion to loops with a 4 instruction or less comparison block * regenerate vs projects
* SPIR-V WIP (#3064)Ellie Hermaszewska2023-08-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Add type layout for structured buffer * Default to generating spirv directly * vk test for compute simple * Add spirv-dis as a downstream compiler * Emit Array types in SPIR-V * makevector for spirv * Dump whole spirv module on validation failure * register array types todo, use emitTypeInst * Neater formatting for unhandled inst printing * break out emitCompositeConstruct * Correct array type generation * neaten * Allow getElement for vector * Remove unused * Allow predicating target intrinsics on types * Consider functions with intrinsics to have definitions We need to specialize these if they are predicated on types * Correct array type generation * makeArray for spir-v * replace getElement with getElementPtr for spirv * Correct translation of field access for spirv * Push layouts to types for spirv * Spirv intrinsics * operator now makes a pointer * Add structured buffer of struct test * Preserve type layout in spirv structured buffer legalization * neaten * makeVectorFromScalar for SPIRV * placeholder for layouts on param groups * More type safe spirv op construction * Know that constants and types only go in one section * Remove emitTypeInst * Add todo for spirv sampling * Add links to spirv documentation on emit functions * OpTypeImage support for SPIR-V * Add simpler texture test for spirv * s/spirv_direct/spirv/g * Allow several string literals in target_intrinsic * Handle global params without a var layour for SPIR-V For example groupshared vars * uint spirv asm type * Add todo for isDefinition It is currently too broad * Some atomic op spirv intrinsics * Strip ConstantBuffer wrappers for spirv * Add todo for matrix annotations * Do not associate decorations insts with spirv counterparts * Correct entry point parameter generation * Spelling * Assert that fieldAddress is returning a pointer * Add error for existential type layout getting to spir-v emit * Add IRTupleTypeLayout Unused so far * Allow getElementPtr to work with vectors * Correct target name in test * Hide default spirv direct behind a premake option --default-spirv-direct=true * Do not insert space at start of intrinsic def * Correct asm rendering in tests * remove redundant option * Emit directly from direct test * Add source language options for spirv-dis * Add comments to spirv dis * Add dead debug print for before spirv module * Correct asm rendering in tests * s/spirv_direct/spirv/g * Only specialize intrinsic functions with predicates * regenerate vs projects * squash warnings * squash warnings * remove duplication * Silence warnings from msvc * squash warnings * Overload for zero sized array * More msvc warnings * warnings * Add spirv-tools to path for tests * Do not be specific about dxc version for diag test * Normalize line endings from spirv-dis * Correct filecheck matches * Temporarily disable two spirv tests Failing on CI, undebuggable hang :/ * Do not emit storage class more than once for spirv snippet * Do not pass spir-v to spirv-dis by stdin * Do not get spirv-dis output via stream, use file * normalize file endings in spirv-dis output
* Support per field matrix layout (#3101)Yong He2023-08-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | * Support per field matrix layout * Fix warnings. * Fix. * Fix tests. * Fix spiv gen. * Fix. * More test fixes. * Fix. * Run only GPU tests on self-hosted servers. * Remove -use-glsl-matrix-layout-modifier. * Fix. --------- Co-authored-by: Yong He <yhe@nvidia.com>
* Add glsl intrinsics for CalculateLevelOfDetail (#3023)Ellie Hermaszewska2023-07-26
| | | | | Translates to textureQueryLod().x (with the Unclameped variant being returned in the .y component) Co-authored-by: Yong He <yonghe@outlook.com>
* Add GatherCmp* for texture objects (#3024)Ellie Hermaszewska2023-07-26
| | | | | The translation to GLSL is incomplete as intrinsics only exist for some combination of comparison and channel (just channel 0) Closes https://github.com/shader-slang/slang/issues/3021
* Add support for `-fvk-invert-y`. (#3012)Yong He2023-07-21
| | | Co-authored-by: Yong He <yhe@nvidia.com>
* Add glsl intrinsic for SampleCmpLevelZero with offset and correct existing ↵Ellie Hermaszewska2023-07-10
| | | | | | | | | | | | | intrinsic (#2975) * Correct glsl intrinsic for SampleCmpLevelZero without offset * Add glsl intrinsic for SampleCmpLevelZero with offset * Add test for samplecmplevelzero glsl translation --------- Co-authored-by: Yong He <yonghe@outlook.com>
* Work around for NonUniformResourceIndex with non integral types. (#2963)jsmall-nvidia2023-07-06
| | | | | | | * Work around for NonUniformResourceIndex with non integral types. * Make the non integral NonUniformResourceIndex, inline early. * Add a depreciated warning.
* Fix function side-effectness prop logic. (#2875)Yong He2023-05-09
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* Various dxc/fxc compatibility fixes. (#2863)Yong He2023-05-02
| | | | | | | | | | | | | * Various dxc/fxc compatibility fixes. * Cleanup. * Fix test cases. * Fix comments. --------- Co-authored-by: Yong He <yhe@nvidia.com>
* Switch to short circuiting semantics for scalar `?:` operator. (#2733)Yong He2023-03-24
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* Support GL_EXT_fragment_shader_barycentric (#2704)Samuel Kogler2023-03-16
| | | | | * Support GL_EXT_fragment_shader_barycentric * Support pervertex with GL_EXT_fragment_shader_barycentric
* Detect and deduplicate read-only resource access. (#2680)Yong He2023-02-27
| | | | | | | | | | | * Detect and deduplicate read-only resource access. * Fix tests. * Fix tests. --------- Co-authored-by: Yong He <yhe@nvidia.com>
* More control flow simplifications. (#2673)Yong He2023-02-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * More control flow and Phi param simplifications. * Fix. * Fix gcc error. * Fix. * More IR cleanup. * Fix bug in phi param dce + ifelse simplify. * Propagate and DCE side-effect-free functions. * Enhance CFG simplifcation to remove loops with no side effects. * Fix. * Fixes. * Fix tests. Add [__AlwaysFoldIntoUseSite] for rayPayloadLocation. * More cleanup. * Fixes. * Fix. --------- Co-authored-by: Yong He <yhe@nvidia.com>
* Overhaul global inst deduplication and cpp/cuda backend. (#2654)Yong He2023-02-16
| | | | | | | | | * Overhaul global inst deduplication and cpp/cuda backend. * Update IR documentation. --------- Co-authored-by: Yong He <yhe@nvidia.com>
* Arithmetic simplifications and more IR clean up logic. (#2632)Yong He2023-02-07
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* Reimplement address elimination. (#2605)Yong He2023-01-24
| | | | | | | | | * Reimplement address elimination pass. * Fix error. * Update test references. Co-authored-by: Yong He <yhe@nvidia.com>
* Full address insts elimination for backward autodiff. (#2604)Yong He2023-01-23
| | | Co-authored-by: Yong He <yhe@nvidia.com>
* Remove `construct` IR op. (#2555)Yong He2022-12-07
| | | Co-authored-by: Yong He <yhe@nvidia.com>
* Shader Execution Reordering (via NVAPI) (#2484)jsmall-nvidia2022-11-02
| | | | | | | | | | | | | | | | | | | * #include an absolute path didn't work - because paths were taken to always be relative. * Preliminary SER NVAPI support. * Set the DXC compiler version. Fix typo in premake5.lua * Improve DXC version detection. Enable HLSL2021 on late enough version of DXC. * Fix typo. * Fix launch. * Test via DXIL output. * Update dxc-error output.
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