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vkd3d-shader/hlsl: Fold x * 1 identities.

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Francisco Casas 2024-04-19 13:02:37 -04:00 committed by Alexandre Julliard
parent b14f935d0f
commit ee735e8eed
Notes: Alexandre Julliard 2024-04-30 23:13:01 +02:00 
Approved-by: Giovanni Mascellani (@giomasce)
Approved-by: Henri Verbeet (@hverbeet)
Approved-by: Zebediah Figura (@zfigura)
Approved-by: Alexandre Julliard (@julliard)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/809
1 changed files with 39 additions and 0 deletions
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39
libs/vkd3d-shader/hlsl_constant_ops.c
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@ -1430,6 +1430,40 @@ static bool constant_is_zero(struct hlsl_ir_constant *const_arg)
return true;
}
static bool constant_is_one(struct hlsl_ir_constant *const_arg)
{
struct hlsl_type *data_type = const_arg->node.data_type;
unsigned int k;
for (k = 0; k < data_type->dimx; ++k)
{
switch (data_type->base_type)
{
case HLSL_TYPE_FLOAT:
case HLSL_TYPE_HALF:
if (const_arg->value.u[k].f != 1.0f)
return false;
break;
case HLSL_TYPE_DOUBLE:
if (const_arg->value.u[k].d != 1.0)
return false;
break;
case HLSL_TYPE_UINT:
case HLSL_TYPE_INT:
case HLSL_TYPE_BOOL:
if (const_arg->value.u[k].u != 1)
return false;
break;
default:
return false;
}
}
return true;
}
bool hlsl_fold_constant_identities(struct hlsl_ctx *ctx, struct hlsl_ir_node *instr, void *context)
{
struct hlsl_ir_constant *const_arg = NULL;
@ -1475,6 +1509,11 @@ bool hlsl_fold_constant_identities(struct hlsl_ctx *ctx, struct hlsl_ir_node *in
res_node = mut_arg;
break;
case HLSL_OP2_MUL:
if (constant_is_one(const_arg))
res_node = mut_arg;
break;
default:
break;
}