| Commit message (Collapse) | Author | Age |
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* Allow unspecialized existential shader parameters (dynamic dispatch).
* Fixes.
* Fixes
* disable cuda test
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* First pass at filter for AST serial writing.
* Serialization of AST for modules.
* Removed some commented out source.
Co-authored-by: Tim Foley <tfoleyNV@users.noreply.github.com>
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* Fix premake5.lua so it uses the new path needed for OpenCLDebugInfo100.h
* Keep including the includes directory.
* Added the spirv-tools-generated files.
* We don't need to include the spirv/unified1 path because the files needed are actually in the spirv-tools-generated folder.
* Put the build_info.h glslang generated files in external/glslang-generated. Alter premake5.lua to pick up that header.
* First pass at documenting how to build glslang and spirv-tools.
* Improved glsl/spir-v tools README.md
* Added revision.h
* Change how gResources is calculated.
Update about revision.h
* Update docs a little.
* Split out spirv-tools into a separate project for building glslang. This was not necessary on linux, but *is* necessary on windows, because there is a file disassemble.cpp in spirv-tools and in glslang, and this leads to VS choosing only one. With the separate library, the problem is resolved.
* Fix direct-spirv-emit output.
* Update to latest version of spirv headers and spirv-tools.
* Upgrade submodule version of glslang in external.
* Add fPIC to build options of slang-spirv-tools
* WIP adding support for InterlockedAddFp32
* Upgrade slang-binaries to have new glslang.
* Fix issues with Windows slang-glslang binaries, via update of slang-binaries used.
* WIP - atomicAdd. This solution can't work as we can't do (float*) in glsl.
* WIP on atomic float ops.
* Added checking for multiple decls that takes into account __target_intrinsic and __specialized_for_target.
First pass impl of atomic add on float for glsl.
* Split __atomicAdd so extensions are applied appropriately.
* Made Dxc/Fxc support includes.
Use HLSL prelude to pass the path to nvapi
Added -nv-api-path
* Refactor around IncludeHandler and impl of IncludeSystem
* slang-include-handler -> slang-include-system
Have IncludeHandler/Impl defined in slang-preprocessor
* Small comment improvements.
* Document atomic float add addition in target-compatibility.md.
* CUDA float atomic support on RWByteAddressBuffer.
* Add atomic-float-byte-address-buffer-cross.slang
* Removed inappropriate-once.slang - the test is no longer valid when a file is loaded and has a unique identity by default. A test could be made, but would require an API call to create the file (so no unique id).
Improved handling of loadFile - uses uniqueId if has one.
* Work around for testing target overlaps - to avoid exceptions on adding targets.
Simplify PathInfo setup.
Modify single-target-intrinsic.slang - it no longer failed because there were no longer multiple definitions for the same target.
Co-authored-by: Tim Foley <tfoleyNV@users.noreply.github.com>
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* Multiple Entry Point Backend
This PR introduces changes to the IR linking, emitting, and options for
multiple entry points. Specifically, this PR updates several locations
to support a (potentially empty) list of entry points, adding list infrastructure and looping over entry points as appropriate.
* Formatting change
* Updated unknown target case to not require an entry point
* Formatting and list consts updates
Co-authored-by: Tim Foley <tfoleyNV@users.noreply.github.com>
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* Multiple Entry Point Cleanup
This commit provides some in-code cleanup of the previous multiple entry point PR (#1411). Specifically, this PR provides refactoring of multiple entry point functions into helper functions, the removal of the EntryPointAndIndex struct, and various stylistic improvements.
* Minor updates
Co-authored-by: Tim Foley <tfoleyNV@users.noreply.github.com>
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(#1420)
* Fix handling of UniformState from #1396
* * Fix bug in slang-dxc-support where it didn't get the source path correctly
* Make entryPointIndices const List<Int>&
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* Backend for Multiple Entry Points
Introduces the basic backend on the compiler for zero or more entry
points. Entry points have been extended to lists for several functions,
with loopFunctions have been extended to take in entry points and
indices as appropriate, to allow for multiple entry points once the
frontend is expanded. Several functions are currently being assumed to
have a single entry point for simplicity and provide a work in progress
commit.
* Progress on debugging fixes
* Tests passing
* Refactored emitEntryPoints
* Updated lists to be by constant reference
* Fixes to formatting
* Refactoring updates for the compiler
* Fix for compilation errors
* Reformatting
* More reformatting
* Moved struct around to help with compilation
Co-authored-by: Tim Foley <tfoleyNV@users.noreply.github.com>
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* Associate a downstream compiler for prelude lookup even if output is source.
* Remove LanguageStyle and just use SourceLanguage instread.
* Added set/getPrelude.
Made prelude work on source language.
* Fix typo in method name replacement.
get/SetPrelude get/setLanguagePrelude
* Fix issue because of method name change.
* Remove getPreludeDownstreamCompilerForTarget
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* * Fix output in slang repro command line
* Profile uses lowerCamel method names (had mix of upper and lower)
* Rename slang-serialize-state/SerializeStateUtil to slang-repro and ReproUtil.
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(#1395)
Co-authored-by: Tim Foley <tfoleyNV@users.noreply.github.com>
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* Small improvements to documentation and code around DiagnosticSink
* Made methods/functions in slang-syntax.h be lowerCamel
Removed some commented out source (was placed elsewhere in code)
* Making AST related methods and function lowerCamel.
Made IsLeftValue -> isLeftValue.
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* Compiles.
* Small tidy up around session/ASTBuilder.
* Tests are now passing.
* Fix Visual Studio project.
* Fix using new X to use builder when protectedness of Ctor is not enough.
Substitute->substitute
* Add some missing ast nodes created outside of ASTBuilder.
* Compile time check that ASTBuilder is making an AST type.
* Moced findClasInfo and findSyntaxClass (essentially the same thing) to SharedASTBuilder from Session.
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* Fields from upper to lower case in slang-ast-decl.h
* Lower camel field names in slang-ast-stmt.h
* Fix fields in slang-ast-expr.h
* slang-ast-type.h make fields lowerCamel.
* slang-ast-base.h members functions lowerCamel.
* Method names in slang-ast-type.h to lowerCamel.
* GetCanonicalType -> getCanonicalType
* Substitute -> substitute
* Equals -> equals
ToString -> toString
* ParentDecl -> parentDecl
Members -> members
* * Make hash code types explicit
* Use HashCode as return type of GetHashCode
* Added conversion from double to int64_t
* Split Stable from other hash functions
* toHash32/64 to convert a HashCode to the other styles.
GetHashCode32/64 -> getHashCode32/64
GetStableHashCode32/64 -> getStableHashCode32/64
* Other Get/Stable/HashCode32/64 fixes
* GetHashCode -> getHashCode
* Equals -> equals
* CreateCanonicalType -> createCanonicalType
* Catches of polymorphic types should be through references otherwise slicing can occur.
* Fixes for newer verison of gcc.
Fix hashing problem on gcc for Dictionary.
* Another fix for GetHashPos
* Fix signed issue around GetHashPos
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* Extractor builds without any reference to syntax (as it will be helping to produce this!).
* Change macros to include the super class.
* Added indexOf(const UnownedSubString& in) to UnownedSubString.
Refactored extractor
* Output a macro for each type with the extracted info - can be used during injection in class
* Simplify the header file - as can get super type and last from macro now
* Store the 'origin' of a definition
* Some small tidy ups to the extractor.
* Improve comments on the extractor options.
* Made CPPExtractor own SourceOrigins
* Small fixes around SourceOrigin.
* Small tidy up around macroOrign
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* Initial work to support OptiX output for ray tracing shaders
This change represents in-progress work toward allowing Slang/HLSL ray-tracing shaders to be cross-compiled for execution on top of OptiX. The work as it exists here is incomplete, but the changes are incremental and should not disturb existing supported use cases.
One major unresolved issue in this work is that the OptiX SDK does not appear to set an environment variable
Changes include:
* Modified the premake script to support new options for adding OptiX to the build. Right now the default path to the OptiX SDK is hard-coded because the installer doesn't seem to set an environment variable. We will want to update that to have a reasonable default path for both Windows and Unix-y platforms in a later chance.
* I ran the premake generator on the project since I added new options, which resulted in a bunch of diffs to the Visual Studio project files that are unrelated to this change. Many of the diffs come from previous edits that added files using only the Visual Studio IDE rather than by re-running premake, so it is arguably better to have the checked-in project files more accurately reflect the generated files used for CI builds.
* The "downstream compiler" abstraction was extended to have an explicit notion of the kind of pipeline that shaders are being compiled for (e.g., compute vs. rasterization vs. ray tracing). This option is used to tell the NVRTC case when it needs to include the OptiX SDK headers in the search path for shader compilation (and also when it should add a `#define` to make the prelude pull in OptiX). This code again uses a hard-coded default path for the OptiX SDK; we will need to modify that to have a better discovery approach and also to support an API or command-line override.
* One note for the future is that instead of passing down a "pipeline type" we could instead pass down the list/set of stages for the kernels being compiled, and the OptiX support could be enabled whenever there is *any* ray tracing entry point present in a module. That approach would allow mixing RT and compute kernels during downstream compilation. We will need to revisit these choices when we start supporting code generation for multiple entry points at a time.
* The CUDA emit logic is currently mostly unchanged. The biggest difference is that when emitting a ray-tracing entry point we prefix the name of the generated `__global__` function with a marker for its stage type, as required by the OptiX runtime (e.g., a `__raygen__` prefix is required on all ray-generation entry points).
* The `Renderer` abstraction had a bare minimum of changes made to be able to understand that ray-tracing pipelines exist, and also that some APIs will require the name of each entry point along with its binary data in order to create a program.
* The `ShaderCompileRequest` type was updated so that only a single "source" is supported (rather than distinct source for each entry point), and also the entry points have been turned into a single list where each entry identifies its stage instead of a fixed list of fields for the supported entry-point types.
* The CUDA compute path had a lot of code added to support execution for the new ray-tracing pipeline type. The logic is mostly derived from the `optixHello` example in the OptiX SDK, and at present only supports running a single ray-generation shader with no parameters. The code here is not intended to be ready for use, but represents a signficiant amount of learning-by-doing.
* The `slang-support.cpp` file in `render-test` was updated so that instead of having separate compilation logic for compute vs. rasterization shaders (which would mean adding a third path for ray tracing), there is now a single flow to the code that works for all pipeline types and any kind of entry points.
* Implicit in the new code is dropping support for the way GLSL was being compiled for pass-through render tests, which means pass-through GLSL render tests will no longer work. It seems like we didn't have any of those to begin with, though, so it is no great loss.
* Also implicit are some new invariants about how shaders without known/default entry points need to be handled. For example, the ray tracing case intentionally does not fill in entry points on the `ShaderCompileRequest` and instead fully relies on the Slang compiler's support for discovering and enumerating entry points via reflection. As a consequence of those edits the `-no-default-entry-point` flag on `render-test` is probably not working, but it seems like we don't have any test cases that use that flag anyway.
Given the seemingly breaking changes in those last two bullets, I was surprised to find that all our current tests seem to pass with this change. If there are things that I'm missing, I hope they will come up in review.
* fixup: issues from review and CI
* Some issues noted during the review process (e.g., a missing `break`)
* Fix logic for render tests with `-no-default-entry-point`. I had somehow missed that we had tests reliant on that flag. This required a bit of refactoring to pass down the relevant flag (luckily the function in question was already being passed most of what was in `Options`, so that just passing that in directly actually simplifies the call sites a bit.
* There was a missing line of code to actually add the default compute entry points to the compile request. I think this was a problem that slipped in as part of some pre-PR refactoring/cleanup changes that I failed to re-test.
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* render feature for CUDA compute model.
* Use SemanticVersion type.
* Enable CUDA wave tests that require CUDA SM 7.0.
Provide mechanism for DownstreamCompiler to specify version numbers.
* Enabled wave-equality.slang
* Make CUDA SM version major version not just a single digit.
* Fix assert.
* DownstreamCompiler::Version -> CapabilityVersion
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embedding. (#1257)
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* WIP add support for __spirv_version .
* Added IRRequireSPIRVVersionDecoration
* SPIR-V version passed to glslang.
Enable VK wave tests.
Split ExtensionTracker out, so can be cast and used externally to emit.
Added SourceResult.
* Fix warning on Clang.
* Missing hlsl.meta.h
* Refactor communication/parsing of __spirv_version with glslang.
* Fix some debug typos.
Be more precise in handling of substring handling.
* Make glslang forwards and backwards binary compatible.
* Small comment improvements.
* Added slang-spirv-target-info.h/cpp
* Fix for major/minor on gcc.
* Another fix for gcc/clang.
* VS projects include slang-spirv-target-info.h/cpp
* Removed SPIRVTargetInfo
Added SemanticVersion.
Don't bother with passing a target to glslang. Should be separate from 'version'.
* Renamed slang-emit-glsl-extension-tracker.cpp/.h -> slang-glsl-extension-tracker.cpp/.h
Fixed some VS project issues.
* Fix a comment.
* Added slang-semantic-version.cpp/.h
* Added slang-glsl-extension-tracker.cpp/.h
* Added split that can check for input has all been parsed.
* Fix problem on x86 win build.
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* WIP add support for __spirv_version .
* Added IRRequireSPIRVVersionDecoration
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Just adding the enumerants for the new stages/profiles didn't automatically update the code that computes a profile string for passing to fxc/dxc.
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* Added support for Targets to TypeTextUtil.
* Made Function names 'get' and 'find' instead of 'as' in TypeTextUtil.
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* Some Slang API additions
These are additions to the public Slang API that came up while I was trying to write an example to demonstrate GPU printing. The additions aren't strictly necessary for the example, but I found these to be missing services when writing the code the way I wanted to.
The main public changes are:
* There is a new distinct `IEntryPoint` interface which inherit from `IComponentType` (much like `IModule` before). For now this doesn't expose any new functions on top of `IComponentType`, but I expect it to do so eventually.
* It is now possible to get the `IModule` for a specific translation unit in a compile request with `spCompileRequest_getModule`. Even for a compile request that had only one translation unit this is *not* the same object as gets returned by `spCompileRequest_getProgram`. The latter should probably be called `*_getLinkedProgram` because it returns a composite component type that links the module with everything it `import`s.
* An `IModule` can look up entry points declared in the module. Eventually a module should support looking up most of the declarations in the module (e.g., types) by name, but entry points are an obvious case.
* A new `link()` operation is added to `IComponentType`. It is possible to have component types that have unsatisfied dependencies, such that trying to generate kernel code from them will fail. The `link()` operation tries to produce a new composite component type that combines a component with its dependencies, to enable code generation. The implementation of end-to-end compilation was using a function like this internally, but it hadn't been exposed to the API.
Notes on the implementation:
* The list of entry points declared in a given translation unit has moved from `TranslationUnitRequest` to the `Module` inside of it.
* `EntryPoint` now has to do a song and dance much like `Module` to both inherit from `ComponentType` and support the `IEntryPoint` interface.
* The `Session* m_session` member in `Linkage` (in terms of public API, this is the `slang::ISession` holding a pointer to the `slang::IGlobalSession`) has been changed to a `RefPtr`. Without this change an application can't just hold onto a `ComPtr<slang::ISession>`; they also need to retain the `IGlobalSession` or things will crash. The new behavior seems more correct, but I worry that it might introduce a leak.
* The `asInternal` operation for `IComponentType` had to be updated to not just perform a cast. A type like `Module` has two `IComponentType` sub-objects, and only one of these is at the same address as the `ComponentType` base.
* Similarly, the `Module::getInterface` logic was changed to fall back to `Super::getInterface` for all the cases other than `IID_IModule`, so that it would be guaranteed to return the `IComponentType` at the same address as `ComponentType` in response to a `queryInterface`.
* Fixes for memory retain cycles
As part of the earlier change, I made the `Linkage` type hold a `RefPtr` to the `Session`.
The motivation there is it lets a user hang onto just a `slang::ISession` without having to also retain the `slang::IGlobalSession` for no immediately apparent reason.
There are two problems that this surfaced, one pre-existing and one new.
The new problem was that `Session` already held a `RefPtr<Linkage> m_builtinLinkage` for the linkage that holds the stdlib code.
I solved that problem by splitting the parent pointer in `Linkage` into two pointers: a raw pointer that is used to actually locate the parent session, and a ref-counted one that can be used to *optionally* retain the parent session.
The builtin linkage is then set up to explicitly not retain its parent, thus breaking the cycle.
The second problem was a pre-existing one, where every `ComponentType` was holding a retained pointer to its parent `Linkage`, but in turn the `Linkage` was holding retained pointers to many `ComponentTypes` (and subclasses thereof).
For this case I used the more expedient fix of making the parent pointer into a raw pointer, and figuring that it is a reasonable rule to expect user to retain the `Linkage` (aka `slang::ISession`) that owns a component type if they want to be able to use the component type.
I might need/want to investigate a better fix for the latter issue, but for now this seems to clean up the issues I was seeing in the tests. Fingers crossed.
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* 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.
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* 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.
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* 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.
* Fix compiling on gcc/clang for 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.
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* 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.
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* 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.
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* Remove legacy feature for merging global shader parameters
There is a fair amount of special-case code in the Slang compiler today to deal with the scenario where a programmer declares the "same" shader parameter across two different translation units:
```hlsl
// a.hlsl
Texture2D a;
cbuffer C { float4 c; }
```
```hlsl
// b.hlsl
cbuffer C { float4 c; }
Texture2D b;
```
An important note here is that the declaration of `C` may be in a header file that both `a.hlsl` and `b.hlsl` `#include`, because from the standpoint of the parser and later stages of the compiler, there is no difference between `C` being in an included file vs. it being copy-pasted across both `a.hlsl` and `b.hlsl`.
When a user invokes `slangc a.hlsl b.hlsl` (or the equivalent via the API), then they may decide that it is "obvious" that the shader parameter `C` is the "same" in both `a.hlsl` and `b.hlsl`.
Knowing that the parameter is the "same" may lead them to make certain assumptions:
* They may assume that generated code for entry points in `a.hlsl` and `b.hlsl` will both agree on the exact `register`/`binding` occupied by `C`.
* They may assume that reflection information for their program will only reflect `C` once, and it will reflect it in a way that is applicable to entry points in both `a.hlsl` and `b.hlsl`
* They may assume that the compiler can and should handle this use case even when `C` contains fields with `struct` types that are declared in both `a.hlsl` and `b.hlsl` that have the "same" definition.
* They may assume that in cases where `C` is declared inconsistently between `a.hlsl` and `b.hlsl` the compiler can and will diagnose an error.
Making these assumptions work in practice required a lot of special-case code:
* When composing/linking programs was `ComponentType`s we had to include a special case `LegacyProgram` type that could provide these "do what I mean" semantics, since they are *not* what one would want in the general case for a `CompositeComponentType`.
* During enumeration of global shader parameter in a `LegacyProgram`, we had to detect parameters from distinct modules (translation units) with the same name, and then enforce that they must have the "same" type (via an ad hoc recursive structural type match). No other semantic checking logic needs or uses that kind of structural check.
* During parameter binding generation, we need to handle the case where a single global shader parameter might have multiple declarations, and make sure to collect explicit bindings from all of them (checking for inconsistency) and also to apply generated bindings to all of them.
* The `mapVarToLayout` member in `StructTypeLayout` is a concession to the fact that we might have multiple `VarDecl`s for each field of the struct that represents the global scope, we might need to look up a field and its layout using any of those declarations (much of the need for this field had gone away now that IR passes are largely using IR-based layout).
All of these different special cases added more complex code in many places in the compiler, all to support a scenario that isn't especially common.
Most users won't be affected by the original issue, because they will do one of several things that rule it out:
* Anybody using `slangc` like a stand-in for `fxc` or `dxc` and compiling one translation unit at a time will not suffer from any problems. If/when such users want consistent bindings across translation units, they already use either explicit binding or rely on consistent ordering and implicit binding.
* Anybody who puts all the entry points that get combined into a pass/pipeline in a single file will not have problems. They will automatically get consistent bindings because of Slang's guarantees, and there can't be duplicated declarations when there is only one translation unit.
* Anybody using `import` to factor out common declarations while compiling multiple translation units at once will not be affected. Parameters declared in an `import`ed module are the "same" in a much deeper way that it is trivial for Slang to support.
Only users of the Falcor framework are likely to be affected by this, and they have two easy migration paths: either put related entry points into the same file, or factor common parameters into an `import`ed module.
(It is also worth noting that for command-line `slangc`, it is possible to have a single module with multiple `.slang` files in it, which can all see global declarations like parameters across all the files. Anybody who buys into doing things the Slang Way should have no problem avoiding duplicated declarations)
With the rationale out of the way, the actual change mostly just amounts to deleting lots of code that is no longer needed. An astute reviewer might notice several `assert`-fail conditions where complex Slang features were never actually made to work correctly with this legacy behavior.
A small number of test cases broke with the code changes, but these were tests that specifically exercised the behavior being removed. In the case of the tests around binding/reflection generating, I rewrote the tests to use one of the idomatic workarounds (putting the shared parameters into an `import`ed module), but doing so required me to add support for `#include` when doing pass-through compilation with `fxc`. That logic added a bit more cruft than I had originally hoped to this commit, but having `#include` support when doing pass-through compilation is probably a net win.
* fixup: 64-bit warning
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* * Added ability to name the prefix for intermediates
* Allowed paramters after -load-repro - as pretty useful if somewhat risky thing to do (depending on parameters)
* Fix issue around setting arbitrary state outside of load-repro.
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* WIP setting downstream compiler.
* Setting default downstream compiler for a source type.
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* Added ir-compression option.
* Fix issues around ir-compression.
* Fix typo in test name.
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* Initial work for "global generic value parameters"
The main new feature here is support for the `__generic_value_param` keyword, which introduces a *global generic value parameter*.
For example:
__generic_value_param kOffset : uint = 0;
This declaration introduces a global generic value parameter `kOffset` of type `uint` that has a nominal default value of zero.
The broad strokes of how this feature was added are as follows:
* A new `GlobalGenericValueParamDecl` AST node type is introduces in `slang-decl-defs.h`
* A new `parseGlobalGenericValueParamDecl` subroutine is added to `slang-parser.cpp`, and is added to the list of declaration cases as the callback for the `__generic_value_param` name.
* Cases for `GlobalGenericValueParamDecl` are added to the declaration checking passes in `slang-check-decl.cpp`, mirroring what is done for other variable declaration cases.
* A case for `GlobalGenericValueParamDecl` is aded to the `Module::_collectShaderParams` function, so that it is recognized as a kind of specialization parameter. This introduces a specialization parameter of flavor `SpecializationParam::Flavor::GenericValue` (which was already defined before this change, although it was unused).
* A case for `SpecializationParam::Flavor::GenericValue` is added in `Module::_validateSpecializationArgsImpl` to check that a specialization argument represents a compile-time-constant value (not a type).
* A case for `GlobalGenericValueParmDecl` is introduced in `slang-lower-to-ir.cpp` that introduces a global generic parameter in the IR
* The `IRBuilder` is extended to support creating `IRGlobalGenericParam`s for the distinct cases of type, witness-table, and value parameters. The same IR instruction type/opcode is used for all cases, and only the type of the IR instruction differs.
* The existing mechanisms for lowering specialization arguments to the IR, and doing specialization on the IR itself Just Work with global generic value parameters since they already support value parameters on explicit generic declarations.
That's the santized version of things, but there were also a bunch of cleanups and tweaks required along the way:
* The `SpecializationParam` type was extended to also track a `SourceLoc` to help in diagnostic messages, which meant some churn in the code that collects specialization parameters.
* The `_extractSpecializationArgs` function is tweaked to support any kind of "term" as a specialization argument (either a type or a value).
* To allow *parsing* specialization arguments that can't possibly be types (e.g., integer literals) we replace the existing `parseTypeString` routine with `parseTermString` and then in `parseTermFromSourceFile` call through to a general case of expression parsing (which can also parse types) rather than only parsing types directly.
* Right before doing back-end code generation, we check if the program we are going to emit has remaining (unspecialized) parameters, in which case we emit a diagnostic message for the parameters that haven't been specialized rather than go on to emit code that will fail to compile downstream.
* Within the `render-test` tool we collapse down the arrays that held both "generic" and "existential" specialization arguments, so that we just have *global* and *entry-point* specialization argument lists. This mirrors how Slang has worked internally for a while, but the difference hasn't been important to the test tool because no tests currently mix generic and existential specialization. The logic for parsing `TEST_INPUT` lines has been streamlined down to just the global and entry-point cases, but the pre-existing keywords are still allowed so that I don't have to tweak any test cases.
There are several significant caveats for this feature, which mean that it isn't really ready for users to hammer on just yet:
* There is no support for `Val`s of anything but integers, so there is no way to meaningfully have a generic value param with a type other than `int` or `uint`.
* We allow for a default-value expression on global generic parameters, but do not actually make use of that value for anything (e.g., to allow a programmer to omit specialization arguments), nor check that it meets the constraints of being compile-time constant.
* Global generic value parameters are *not* currently being treated the same as explicit generic parameters in terms of how they can be used for things like array sizes or other things that require constants. This will probably be relaxed at some point, but allowing a global generic to be used to size an array creates questions around layout.
* The IR optimization passes in Slang currently won't eliminate entire blocks of code based on constant values, so using a global generic value parameter to enable/disable features will *not* currently lead to us outputting drastically different HLSL or GLSL. That said, we expect most downstream compilers to be able to handle an `if(0)` well.
* Fix regression for tagged union types
The change that made specialization arguments be parsed as "terms" first, and then coerced to types meant that any special-case logic that is specific to the parsing of types would be bypassed and thus not apply.
Most of that special-case logic isn't wanted for specialization arguments, since it pertains to cases were we want to, e.g, declare a `struct` type while also declaring a variable of that type.
The one special case that *is* useful is the `__TaggedUnion(...)` syntax, which is the only way to introduce a tagged union type right now.
In order to get that case working again, all I had to do was register the existing logic for parsing `__TaggedUnion` as an expression keyword with the right callback, and the existing logic in expression parsing kicks in (that logic was already handling expression keywords like `this` and `true`).
I left in the existing logic for handling `__TaggedUnion` directly where types get parsed, rather than try to unify things.
A better long-term fix is to make the base case for type parsing route into `parseAtomicExpr` so that the two paths share the core logic.
That change should probably come as its own refactoring/cleanup, because it creates the potential for some subtle breakage.
* fixup: typo
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* Initial work on direct emission of SPIR-V
This change adds a first vertical slice of support for emitting SPIR-V code directly from the Slang IR, instead of generating it indirectly via GLSL.
This work isn't usable for anything valuable right now; the goal is just to get something checked in that we can incrementally extend over time.
When invoking `slangc`, the `-emit-spirv-directly` option can be used to turn on the new code path.
I have not bothered to add an equivalent API option, because this flag is only intended to be used for testing in the immediate future.
The existing `emitEntryPoint()` function has become `emitEntryPointSource()` to more accurately reflect its role in a world where we can also emit entry points to a binary format.
Much of the logic that was inside `emitEntryPoint()` had to do with linking and then optimizing/transforming Slang IR code to get it ready for emission on a particular target.
This logic has been factored into a new `linkAndOptimizeIR()` function that can be shared between the path that emits source and the new one that emits SPIR-V.
The meat of the change is then the `emitSPIRVFromIR()` function in `slang-emit-spirv.cpp`, which is called *after* all the optimizations and transformations have been applied to the Slang IR to get it ready.
Rather than repeat myself here, I will try to make the comments in `slang-emit-spirv.cpp` usable as documentation of the approach being taken.
Smaller notes:
* I've included a test case that compares `slangc` output directly to expected SPIR-V. This is perhaps not an ideal plan for how to test SPIR-V emission going forward, but it suffices for now.
* The `external/` directory needed to be added to the include dirs for the `slang` project so that the new code can depend on the SPIR-V header.
* In `slang-ir-link`, the direct SPIR-V generation path means that we now link with a target of SPIR-V instead of GLSL. In principle this can be used to ensure that appropriate variants of intrinsics are selected based on the knowledge that we are emitting SPIR-V. In practice, that isn't being used at all.
* Fixup: path for SPIR-V headers
While working on this PR I used a copy of `spirv.h` that I placed into the repository tree manually, but since I started the work we ended up with SPIR-V headers in our tree anyway, albeit at a different path.
This change tries to fix things up so that my code uses the headers that were already placed in the repository.
* fixup; 64-bit build issue
* fixup: typo fixes based on review
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* Add basic support for entry points in `.slang-lib` files.
The basic idea here is that when writing out a `.slang-lib` file based on a compile request, we include new sections in the generated RIFF that represent the entry points that were requested. The entry-point information is serialized in an entirely ad hoc fashion (a future change might clean it up to use the `OffsetContainer` machinery), and contains the name, profile, and mangled symbol name of an entry point.
When deserializing this information, we create a list of "extra" entry points that gets attached to the front-end compile requests. These "extra" entry points get turned into `EntryPoint` objects at the same place in the code that entry points specified on the command line or via API would be checked, but the extra entry points bypass the semantic checking and just create "dummy" `EntryPoint` objects.
Aside: the ability for a compile request to end up with entry points that weren't originally specified via API or command-line is not new. We already had support for compiling a translation unit with entry points entirely specified via `[shader(...)]` attributes, and this new support tries to function similarly.
Because the "dummy" entry points don't retain AST-level information, several parts of the code have been modified to defensively check for `EntryPoint` objects without a matching AST declaration, and skip over them.
The main place where this creates a problem is paramete binding, where ignoring the dummy entry point is appropriate since we currently assume linked-in library code has been laid out manually.
One small cleanup here is that the `-r` command-line flag and the `spAddLibraryReference` API functio now bottleneck through a common routine to do their work, so that they both gain the new behavior without needing copy-paste programming.
In order to keep the existing test case for library linking with entry points working, I had to add a flag to the `render-test` tool so that it can skip specifying entry point names as part of the compile request it creates. In that case it must instead assume that the entry points will be added to the compile request via other means. This logic is a bit magical, and hints that we should be looking for other ways to expose the library linking functionality over time.
* fixup: remove alignment assertion
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from compilation (#1105)
* Added RiffReadHelper
* Move type to fourCC in Chunk simplifies some code.
* Make MemoryArena able to track external blocks.
Allow ownership of Data to vary.
Changed IR serialization to use moved allocations to avoid copies.
As it turns out all of the array writes could use unowned data, but doing so requires the IRData to stay in scope longer than IRSerialData, which it does at the moment - but perhaps needs better naming or a control for the feature.
* Write out slang-module container.
* WIP on -r option.
Loading modules - with -r.
* Making the serialized-module run (without using imported module).
* Split compiling module from the test.
* Separate module compilation with a function working.
* Remove serialization test as not used.
* Fix warning on gcc.
* Updated test to have types across module boundary.
* Allow entry point declaration.
A test that tries to build with just an entry point declaration and a module.
* Try to make link work with multiple modules.
* Multi module linking first pass working.
* Multi module test working with -module-name option
* Added feature to repro manifest of approximation of command line that was used.
* Use isDefinition - for determining to add decorations to entry point lowering.
* Added support for repo-file-system.h
More precise control of CacheFileSystem.
Allow RelativeFileSystem to strip paths optionally.
Use canonical paths in PathInfo cache.
Fix bug in -D options for command line output of StateSerailizeUtil
* Add missing slang-options.h
* Fix bug in bit slang-state-serialize.cpp with bit removal.
* Added documentation around -repro-file-system
Added spLoadReproAsFileSystem function.
* Fix warning.
* spAddLibraryReference
* * Add support for slang-lib extension
* Container output when using -no-codegen option
* Use the m_containerFormat to determine if the module container is constructed.
Store the result in a blob. This allows for potential access via the API.
Write the blob if a filename is set.
Use m_ prefix for container variables.
* Added spGetContainerCode.
Made spGetCompileRequestCode work.
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* Added feature to repro manifest of approximation of command line that was used.
* Add missing slang-options.h
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* Added RiffReadHelper
* Move type to fourCC in Chunk simplifies some code.
* Make MemoryArena able to track external blocks.
Allow ownership of Data to vary.
Changed IR serialization to use moved allocations to avoid copies.
As it turns out all of the array writes could use unowned data, but doing so requires the IRData to stay in scope longer than IRSerialData, which it does at the moment - but perhaps needs better naming or a control for the feature.
* Write out slang-module container.
* WIP on -r option.
Loading modules - with -r.
* Making the serialized-module run (without using imported module).
* Split compiling module from the test.
* Separate module compilation with a function working.
* Remove serialization test as not used.
* Fix warning on gcc.
* Updated test to have types across module boundary.
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* WIP RiffContainer.
* WIP riff container.
* Testing out RiffContainer.
* * Naming improvements
* Visitor functions
* Ability to dump riffs.
* Renamed RiffChunk to RiffHeader
* Remove m_ prefix on RiffHeader members.
* Riff stream reading writing.
Simple test of riff reading/writing.
* Fix Riff alignment issue.
Make IR serialization use the RiffContainer API.
* Improve documentation.
* Remove SubChunk fuctionality as not needed with RiffContainer.
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The semantic checking logic was all inside `slang-check.cpp` and as a result this was a monster file that was extremely hard to follow. This change splits `slang-check.cpp` into several smaller files, although some of the resulting files are still quite large.
This change attempts to be a copy-paste job as much as possible and does *not* perform any cleanup on naming, structure, duplication, etc. in the code it deal with. No function bodies or signatures have been touched.
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* Initial work on representing layout at IR level
This change starts the process of making the back-end of the compiler independent of the AST-level layout information (`TypeLayout`, `VarLayout`, etc.) so that it instead only relies on layout information that is embedded into IR modules. This brings us incrementally closer to a world in which the back-end could be run without the AST-level structures even existing (e.g., for an application that just wants to ship IR without any AST information for IP protection, while still supporting some amount of linking and specialization).
The main parts of the change are:
* There is a bunch of incidental churn related to specifying entry points by index instead of the `EntryPoint` object for certain operations. This ends up being a better choice because we can use the index to look up side-band information about the entry point that might not be stored on the `EntryPoint` object itself. In particular...
* We expand the `ComponentType` interface to support looking up the mangled name of an entry point by index. In common cases (no generic/interface specialization) this would be the same as asking the `EntryPoint` for its mangled name, but in cases where we have specialized a generic entry point, the mangled name would include speicalization arguments that are only available on the `SpecializedComponentType` that wraps the entry point. This part of the change isn't ideal and there might be a better solution waiting to be invented. Note that we store mangled entry point names as strings rather than using `DeclRef`s because that ensures that the information could be serialized and deserialized without a dependence on the AST.
* The `TargetProgram` type (which represents binding a specific `ComponentType` for a shader program to a specific `TargetRequest` that represents the target platform) is expanded to include an `IRModule` that represents layout information, in addition to the AST-level `ProgramLayout` it already contained. We create both of these objects at the same time (on-demand) to simplify the overall flow (so that any code that triggers creation of the AST-level layout will also ensure that the IR-level layout exists).
* A bunch of code in the emit passes that was passing down layout-related objects has been eliminated. It appears that most of those objects weren't actually being used, so this is just a cleanup, but it helps ensure that the back-end steps are "clean" and don't depend on the AST-level information. The one big exception here is that the emit logic needs to know the stage for the entry point being emitted (to deal with one wrinkle in translating DXR to VKRT).
* A big change (actually introduced by @jsmall-nvidia in a branch that this change copied and then built from) is to introduce some more explicit IR instructions to represent layout information, notably an `IRTypeLayout` and an `IRVarLayout`. For now these objects still reference their AST equivalents, but the separation gives us an incremental path to move information from the AST-level objects over to the IR ones. This work includes logic in `IRBuilder` to construct the IR-level layout objects from the AST-level ones on-demand, so that the existing code paths that try to attach AST-level layout will continue to work for now.
* Because layout information is now embedded in the IR, the `slang-ir-link.cpp` logic loses a lot of cases that used to deal with attaching AST-level layout objects to IR-level instructions during the linking process. Instead, the linker now assumes that one (or more) of the input IR modules will have layout information associated with it, and the linker makes sure to copy layout decorations (and the instructions they reference) from the input IR module(s) to the output using its more ordinary mechanisms.
* Inside `slang-lower-to-ir.cpp`, we add logic to construct an IR module in a `TargetProgram` that simply references the global shader parameters, entry points, etc. and attaches IR layout decorations to them. This is akin to the existing pass in the same file that constructs IR to represent specialization information, and both of these passes share infrastructure with the main AST->IR lowering pass. Eventually, it is expected that this pass will encompass more of the logic for copying AST-level layout information over to IR-level equivalents.
* One small wrinkle with this change was that the output for an HLSL generation test case changed some of its `#line` directives. The old code was actually more inaccurate than the new, so this change just updated the baseline. It also added some logic in the linker to make sure that when an IR instruction has multiple definitions, we try to pick up a source location from any of them, in case the "main" one somehow didn't get a location.
* Another small fix was that the key/value map in `StructTypeLayout` for mapping fields/members to their layouts was keyed on `Decl*` when it really should have been `VarDeclBase*`.
This change should in principle be a pure refactoring with no functionality changes, so no new tests were added. It is unfortunately also a change that has a high probability of breaking at least *some* client code, so we may want to be defensive and mark this with a new major version number (well, a new *minor* version number since we are pre-`1.0`) to give us some room for releasing hotfixes to the old version if needed.
* fixup: infinite recursion bug detected by clang
* fixup: remove commented-out code
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* Add spirv-tools module and set ENABLE_OPT to be true
* Add spirv-headers dependency
* Build spirv-opt into glslang project
* Add optimization pass
* Add generated spirv-opt files
Modify solution to avoid obj file conflicts
* Add optimization pass to SPIR-V generation
* Don't pass additional optimizer options to glslang
* Build spirv-opt in Linux
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source (if source isn't available as a file) and binaries. (#1070)
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* First pass support for performance profiling
* Test across all elements
* Fix bug - sourceContents is not used, should use rawSource.
* * Add ability to get prelude from API.
* Allow specifying source language for render-test
* Made it possible to compile a test input file as C++
* Special handling for reflection
* Added C++ impl to performance-profile.slang
* Remove some clang warnings.
* Output profile timings on appveyor and other TC.
* Remove passing around of StdWriters (can use global).
Small comment improvements.
* Fix defines being passed through to Visual Studio.
* Fix bug handling preprocessor definitions in Gcc/Clang targets.
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* First pass support for performance profiling
* Test across all elements
* Fix bug - sourceContents is not used, should use rawSource.
* * Add ability to get prelude from API.
* Allow specifying source language for render-test
* Made it possible to compile a test input file as C++
* Special handling for reflection
* Added C++ impl to performance-profile.slang
* Remove some clang warnings.
* Output profile timings on appveyor and other TC.
* Remove passing around of StdWriters (can use global).
Small comment improvements.
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* WIP: Improving CPU performance/ABI
* Optionally output code on CPU for groupThreadID and groupID.
* Added ability to set compute dispatch size on command line for render-test.
Dispatch compute tests taking into account dispatch size.
Added test for semantics are working.
* Test using GroupRange.
* Fix problem with adding \n for externa diagnostic - to do it if there isn't a \n at the end. Change the ouput order (put result before) so last value is diagnostic string.
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