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2025-04-30cuda: Improve entry handling for SV_DispatchThreadID (#6925)Mukund Keshava
* cuda: Improve entry handling for SV_DispatchThreadID Fixes #6780 This commit improves CUDA entry point handling by extracting appropriate components from DispatchThreadID based on parameter type. It now properly handles uint scalar (x component only) and uint2 vector (x,y components) instead of always using the full uint3 value. Add a new test case to check for this. * format code * fix CI failure * Handle review comments --------- Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com> Co-authored-by: Ellie Hermaszewska <ellieh@nvidia.com>
2025-01-15Fix optix varying legalization. (#6089)Yong He
* Fix optix varying legalization. * Add test.
2024-12-21Fixed stage and result field names in json reflection (#5927)Stan
2024-11-07Fix CUDA prelude for makeMatrix (#5509)Yong He
* Fix CUDA prelude for makeMatrix * Add regression test.
2024-08-28Add `ReportIntersectionOptix` for optix. (#4949)Yong He
2024-07-16Warnings function parameters (#4626)venkataram-nv
* Handle out/inout functions with separate consideration * Fixing bug with passing aliasable instructions * Handle autodiff functions (fwd and rev) in warning system * Handling interface methods * Handling ref parameters like out/inout * Temporary fix to remaining bugs * Refactoring methods and tests * Recursive check for empty structs * Using default initializable interface in tests * Resolving CI fail
2024-05-14Remove use of `G0` and `__target_intrinsic` in stdlib. (#4170)Yong He
* Remove use of `G0` and `__target_intrinsic` in stdlib. * Fix. * Fix calling intrinsic in global scope.
2023-09-29Add `requirePrelude()` intrinsic function. (#3250)Yong He
* Add `requirePrelude()` intrinsic function. * Fix. --------- Co-authored-by: Yong He <yhe@nvidia.com>
2022-05-18Support for querying which parameters are used in emitted code (#2239)Alexey Panteleev
See https://github.com/shader-slang/slang/issues/2213
2021-06-10CUDA layout corner cases/testing (#1881)jsmall-nvidia
* #include an absolute path didn't work - because paths were taken to always be relative. * Add support for sizeOf/alignOf/offsetOf to stdlib. Add $G intrinsic expansion that works of the generic parameters not the param type * Test cuda layout. * Fix CUDA layout issues. Fix reflection to handle other built in types. Fix __offsetOf * Tests of reflection and layout as reported directly from CUDA. * Comment about use of aligned size as size. * Fix warning from VS. * Check alignment is pow2. * Small improvements to alignment calcs. * Tab to spaces. * Fix alignment pointer sizes on 32 bit OS for CUDA. * Fix CUDA reflection on 32 bit.
2020-01-24Texture Sample available in CUDA (#1176)jsmall-nvidia
* WIP: Trying to figure out how texturing will work with CUDA. * WIP: Fixes for CUDA layout. Initial CUDA texture test. * WIP: Outputs something compilable by CUDA for TextureND.Sample * 2d texture working with CUDA. * Fix how binding for SamplerState occurs in CUDA. * Small tidy up of comments.
2020-01-21CUDA support improvements (#1168)jsmall-nvidia
* Add test result for compile-to-cuda * Add RAII for some CUDA types to simplify usage. * First pass handling of some instrinsics on CUDA (for example transcendentals) * CUDA working with built in intrinsics. * Add missing CUDA prelude intrinsics. * CUDA matches CPU output on simple-cross-compile.slang * First pass at hlsl-scalar-float-intrinsic.slang test. * Fix smoothstep impl on CUDA and CPU. * Fixed step intrinsic on CUDA/CPU. * Added operator[] to Matrix for C++, to allow row access. Needs a fix for CUDA. * Fixed warning on clang build.
2020-01-17Slang -> CUDA kernel runs correctly in test infrastructure (#1167)jsmall-nvidia
* First pass at BindLocation. * Added BindSet::init - for initializing with two input constant buffers. Needs better name, and perhaps should be another class. * Fix handling of constant buffer stripping. Improved initialization. * Trying to generalize BindLocation a little more. Split out CPULikeBindRoot. * More work to make BindLocation et al work with non uniform bindings. * Added parsing to a location. * WIP: Trying to get CPU working with BindLocation. * Describe problem of knowing the type of the reference point in the binding table. * More ideas on getBindings fix. * Remove BindSet as member of BindLocation. * Added BindLocation::Invalid * Made BindLocation able to be key in hash * Use BindLocation for bindings on BindingSet. * Added cuda and nvrtc categories to test infrastructure. Disabled CUDA synthetic tests by default. Fixed such that all tests now produce something in BindLocation style. * Use m_userIndex instead of m_userData on Resource. Move the binding setup out of cpu-compute-util (as no longer CPU specific) * Removed CPUBinding - used BindLocation/BindSet instead. Fixed some bugs around indexOf around uniform indirection. * Renamed BindSet::Resource -> BindSet::Value. * Document BindLocation. * Fixes for Clang/GCC Improve invariant requirement handling when constructing from BindPoints. * WIP: First attempt to run CUDA kernel. * Fix some issues around doing CUDA kernel launch. * Fix issues around use of cudaMemCpy . * Better cuda runtime error checking mechanism. * Fixed bug in passing parameters to cuda kernel launch. Simplified initialisation of context. * WIP: Fix CUDA runtime issues. * Add explicit CUDA synchronize so failures don't appear on implicit ones. * Fix problem emitting non shared variable on CUDA. * Fix some typos in CUDA layout. Use just a pointer for now for CUDA StucturedBuffer. * Arg order for CUDA launch was wrong. * First compute kernel runs on CUDA.
2019-12-19WIP CUDA source emit (#1157)jsmall-nvidia
* CPPCompiler -> DownstreamCompiler * Added DownstreamCompileResult to start abstraction such that we don't need files. * * Split out slang-blob.cpp * Made CompileResult hold a DownstreamCompileResult - for access to binary or ISlangSharedLibrary * Keep temporary files in scope. * Add a hash to the hex dump stream. * Move all file tracking into DownstreamCompiler. * WIP support for nvrtc. * WIP: Adding support for nvrtc compiler. Adding enum types, wiring up the nvrtc into slang. * Fix remaining CPPCompiler references. * Fix order issue on target string matching. * Use ISlangSharedLibrary for nvrtc. * Use DownstreamCompiler for nvrtc. * WIP first pass at compilation win nvrtc. * Added testing if file is on file system into CommandLineDownstreamCompiler. Added sourceContentsPath. * Make test cuda-compile.cu work by just compiling not comparing output. * Genearlize DownstreamCompiler usage. * Fix warning on clang. * Remove CompilerType from DownstreamCompiler. * Use DownstreamCompiler interface for all compilers. NOTE for FXC, DXC and GLSLANG this doesn't mean using 'compile' - it's still extracting functions from shared library. * Replace DownstreamCompiler::SourceType -> SlangSourceLanguage * Replace _canCompile with something data driven. * Fix compiling on gcc/clang for DownstreamCompiler. * Moved some text conversions into DownstreamCompiler. * Fix problem on non-vc builds with not having return on locateCompilers for VS. * Change so no warning for code not reachable on locateCompilers for vs. * WIP: CUDA code generation - currently just using CPU layout and HLSL. * emitXXXForEntryPoint -> emitEntryPointSource emitSourceForEntryPoint -> emitEntryPointSourceFromIR Fix up generating cuda to get PTX. * WIP emitting cuda for IR. * Small improvements to CUDA ouput. * Disable the CUDA emit test, as output not currently compilable.
2019-12-12Slang compiles CUDA source via NVRTC (#1151)jsmall-nvidia
* CPPCompiler -> DownstreamCompiler * Added DownstreamCompileResult to start abstraction such that we don't need files. * * Split out slang-blob.cpp * Made CompileResult hold a DownstreamCompileResult - for access to binary or ISlangSharedLibrary * Keep temporary files in scope. * Add a hash to the hex dump stream. * Move all file tracking into DownstreamCompiler. * WIP support for nvrtc. * WIP: Adding support for nvrtc compiler. Adding enum types, wiring up the nvrtc into slang. * Fix remaining CPPCompiler references. * Fix order issue on target string matching. * Use ISlangSharedLibrary for nvrtc. * Use DownstreamCompiler for nvrtc. * WIP first pass at compilation win nvrtc. * Added testing if file is on file system into CommandLineDownstreamCompiler. Added sourceContentsPath. * Make test cuda-compile.cu work by just compiling not comparing output. * Fix warning on clang.