mirror of
https://gitlab.winehq.org/wine/vkd3d.git
synced 2025-04-13 05:43:18 -07:00
321fda9c26
This can save a significant amount of temp registers because it allows to
avoid referencing the temp (and having to store it) when not needed.
For instance, this patch lowers the number of required temps for the
following ps_2_0 shader from 24 to 19:
int i;
float3x3 mats[4];
float4 main() : sv_target
{
return mul(mats[i], float3(1, 2, 3)).xyzz;
}
Also, it is needed for SM1 vertex shader relative addressing since
non-constant loads are required to be directly on the uniform ('c'
registers) instead of the temp, and non-constant loads cannot be
transformed by copy propagation.