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* format
* Minor test fixes
* enable checking cpp format in ci
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* Add command-line control over SPIR-V version
By default the Slang compiler policy is usually to produce output with the fewest dependencies possible. If input code can be encoded as SPIR-V 1.0, that is what we will use by default. The catch here is that in some cases later SPIR-V versions introduced improvements to the encoding that can affect performance (e.g., around large global arrays of constants), so that a user might explicitly want to require a newer SPIR-V version (restricting the driver versions their code can work on) in the hopes of seeing better performance.
This change uses the system of capabilities that was previously introduced so that an option like `-profile glsl_450+spirv_1_5` can be used to explicitly request a specific SPIR-V version. Consistent with the existing implementation, the requested version will be taken as a minimum, and the final version might be higher based on other requirements (e.g., use of intrinsic functions that require a higher version).
The test case included here is a little iffy in terms of long-term maintanenace. It relies on having both a `.slang` file and a `.glsl` file that we compile with the same options and then compare the SPIR-V, but that means there is no direct testing that the output SPIR-V actually uses the necessary version. If we break the inference of SPIR-V versions for both the regular and pass-through paths at once, this test won't flag the problem. A better test is probably needed soon.
This change *only* adds support for controlling the SPIR-V version via capabilities specified via the command line or API. It would be nice to a future change to allow something like `[require(spirv_1_5)]` to be added to an entry point function to allow the user to embed their expectation/requirement into the source code.
* fixup: clang warning
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* * Added option to get random bytes from RandomGenerator
* Added ability to allocate only in current block on MemoryArena
* Allowed RiffContainer to not allocate new Data blocks, if can just extend the Data it has (because it's at the end of current block and there is space for the new data).
* Added coverage for change on Riff unit test
* Add test coverage for allocations over multiple Data blocks.
* Improve comment on riff unit tests.
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* First pass of render-test refactor.
* Make window construction a function that can choose an implementation.
* Remove OpenGL as currently has windows dependency.
* Disable Vulkan as Renderer impl has dependency on windows.
* Pass Window in as parameter of 'update'.
* Add win-window.cpp as was missing.
* Fix warning on windows about signs during comparison.
* * Added mechanism to add random arrays as buffer inputs and select type
* Improved RenderGenerator to generate more types, and to be more careful around int32 ranges.
* Added support for security checks (for Visual Studio C++)
* Disable Execption handling being on by default when compiling kernels
* Added a 'Group' version of the entry point that will evaluate all threads in a group in a single call. In test code use this method if available.
* Added -compile-arg to be able to pass arguments to the compile within render-test
* Add documention for the _Group execution feature.
* Fix some typos in cpu-target.md
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* First pass at MemoryArena.
* First pass at RandomGenerator.
* Extract TestContext into external source file.
* Fix warning on printf.
* Use enum classes for Test enums.
OutputMode -> TestOutputMode.
* First pass at FreeList unit test.
* Auto registering tests.
Improvements to RandomGenerator.
* Remove the need for unitTest headers - cos can use registering.
* Added unitTest for MemoryArena.
* Do unit tests.
* Fix typo.
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