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vkd3d-shader/dxil: Rewrite sm6_value_is_constant_zero() in terms of the SM6 value.

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Instead of using the VSIR register.
This commit is contained in:
Giovanni Mascellani
2025-05-13 11:40:20 +02:00
committed by Henri Verbeet
parent 31e4cbba2e
commit 59fb3a7893
Notes: Henri Verbeet 2025-06-10 18:06:02 +02:00 
Approved-by: Henri Verbeet (@hverbeet)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/1546
2 changed files with 7 additions and 8 deletions
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9
libs/vkd3d-shader/dxil.c
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@@ -2272,8 +2272,13 @@ static inline bool sm6_value_is_constant(const struct sm6_value *value)
static bool sm6_value_is_constant_zero(const struct sm6_value *value)
{
/* Constant vectors do not occur. */
return sm6_value_is_register(value) && register_is_scalar_constant_zero(&value->reg);
if (value->value_type != VALUE_TYPE_CONSTANT || value->type->class != TYPE_CLASS_INTEGER)
return false;
if (value->type->u.width == 64)
return value->u.constant.immconst.immconst_u64[0] == 0;
else
return value->u.constant.immconst.immconst_u32[0] == 0;
}
static inline bool sm6_value_is_undef(const struct sm6_value *value)