[PATCH v2 0/6] MR694: vkd3d-shader/hlsl: Improve SM1 support for non-float operations, part 2.

[Francisco Casas (＠fcasas)]

Patches with tests and other miscellaneous changes required before the remaining features in my [sm1_logic](https://gitlab.winehq.org/fcasas/vkd3d/-/commits/sm1_logic) branch. Includes some rebased spirv.c patches by Zeb.

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  v2: vkd3d-shader/spirv: Implement SLT and SGE.
      vkd3d-shader/spirv: Implement CMP.
      tests: Check that -0.0f is not less than 0.0f.
      tests: Test comparison and logic operators on SM1 vertex shaders.
      vkd3d-shader/hlsl: Cast slt before multiplying on ternary operator.

https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/694