From: Francisco Casas fcasas@codeweavers.com
We are passing map writemasks that may have more components than the constant's data type, so a (i < width) check is added to avoid reading components from the constant that are not intended to be used.
Remaining values in the register are initialized to zero, just in case. --- libs/vkd3d-shader/tpf.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/libs/vkd3d-shader/tpf.c b/libs/vkd3d-shader/tpf.c index 550f9b27..ce21eb24 100644 --- a/libs/vkd3d-shader/tpf.c +++ b/libs/vkd3d-shader/tpf.c @@ -3715,8 +3715,10 @@ static void sm4_src_from_constant_value(struct sm4_src_register *src, src->reg.dim = VKD3D_SM4_DIMENSION_VEC4; for (i = 0; i < 4; ++i) { - if (map_writemask & (1u << i)) + if ((map_writemask & (1u << i)) && (i < width)) src->reg.immconst_uint[i] = value->u[j++].u; + else + src->reg.immconst_uint[i] = 0; } } }