17 Oct
2023
17 Oct
'23
3:43 p.m.
Source width is now derived from a write mask, so additional types were removed.
Makes sense to me like this.
There's perhaps an open question about how something like "mov r0.zw, r1.zw" should be represented on the IR level. I think the current MR effectively stores that as "mov r0.zw, r1.zwxx", but there's something to be said for storing it as "mov r0.zw, r1.xyzw" or "mov r0.zw, r1.xxzw" instead, which would preserve how write masks and swizzles currently work on the IR level. That's a bit moot as long as d3d-asm is the only possible target, but might become a bit more relevant if we want to start actually executing these.