Nathan Gauër 20d70196c9 [HLSL][SPIR-V] Implement vk::ext_builtin_input attribute (#138530) ...

This variable attribute is used in HLSL to add Vulkan specific builtins
in a shader.
The attribute is documented here:

17727e88fd/proposals/0011-inline-spirv.md

Those variable, even if marked as `static` are externally initialized by
the pipeline/driver/GPU. This is handled by moving them to a specific
address space `hlsl_input`, also added by this commit.

The design for input variables in Clang can be found here:
355771361e/proposals/0019-spirv-input-builtin.md


Co-authored-by: Justin Bogner <mail@justinbogner.com>

2025-06-04 13:22:37 +02:00

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