3 commits

Author	SHA1	Message	Date
Bill Currie	7a6ca0ebcb	[simd] Use portable swizzles ... gcc and clang have rather different swizzle builtins, but both do a nice job of optimizing the intuitive initializer swizzle (I think gcc 8(?) didn't do such a good job thus my use of __builtin_shuffle).	2022-03-31 02:25:33 +09:00
Bill Currie	dc4df49fff	[gamecode] Add tests for the swizzle instructions ... While not always generated (yet?) the tests are at least in. Just not sure about auto-generated tests that can't be hand-edited.	2022-01-15 22:44:58 +09:00
Bill Currie	bebc811f11	[gamecode] Implement 4-component 32-bit swizzle ... The swizzle instruction is very powerful in that in can do any of the 256 permutations of xyzw, optionally negate any combination of the resulting components, and zero any combination of the result components (even all). This means the one instruction can take care of any actual swizzles, conjugation for complex and quaternion values, zeroing vectors (not that it's the only way), and probably other weird things. The python file was used to generate the jump table and actual swizzle code.	2022-01-03 23:27:01 +09:00