Re: [PATCH 0/1] MR293: vkd3d-shader/hlsl: Force sm1 inputs to be 4-component only for vertex shaders.

[Zebediah Figura (＠zfigura)]

> This doesn't look harmful, but why do we force inputs to have 4 components, even if not in the case of vertex shaders?

Same answer as always: that's how native does it :-)

Which is to say, for vertex shaders, inputs are declared with an .xyzw writemask, and for pixel shaders, they're declared with a writemask corresponding to the actual type. We could potentially deal with this in the sm1 backend, by e.g. writing an .xyzw writemask regardless of what the actual type is.

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https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/293#note_41221