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vkd3d-shader/hlsl: Fold less-than comparisons.

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This commit is contained in:
Giovanni Mascellani 2023-06-09 22:25:51 +02:00 committed by Alexandre Julliard
parent 488af14144
commit bf452b5907
Notes: Alexandre Julliard 2023-06-27 23:34:59 +02:00 
Approved-by: Zebediah Figura (@zfigura)
Approved-by: Henri Verbeet (@hverbeet)
Approved-by: Alexandre Julliard (@julliard)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/232
1 changed files with 43 additions and 0 deletions
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43
libs/vkd3d-shader/hlsl_constant_ops.c
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@ -406,6 +406,45 @@ static bool fold_equal(struct hlsl_ctx *ctx, struct hlsl_constant_value *dst, co
return true;
}
static bool fold_less(struct hlsl_ctx *ctx, struct hlsl_constant_value *dst, const struct hlsl_type *dst_type,
const struct hlsl_ir_constant *src1, const struct hlsl_ir_constant *src2)
{
unsigned int k;
assert(dst_type->base_type == HLSL_TYPE_BOOL);
assert(src1->node.data_type->base_type == src2->node.data_type->base_type);
for (k = 0; k < 4; ++k)
{
switch (src1->node.data_type->base_type)
{
case HLSL_TYPE_FLOAT:
case HLSL_TYPE_HALF:
dst->u[k].u = src1->value.u[k].f < src2->value.u[k].f;
break;
case HLSL_TYPE_DOUBLE:
dst->u[k].u = src1->value.u[k].d < src2->value.u[k].d;
break;
case HLSL_TYPE_INT:
dst->u[k].u = src1->value.u[k].i < src2->value.u[k].i;
break;
case HLSL_TYPE_UINT:
case HLSL_TYPE_BOOL:
dst->u[k].u = src1->value.u[k].u < src2->value.u[k].u;
break;
default:
vkd3d_unreachable();
}
dst->u[k].u *= ~0u;
}
return true;
}
static bool fold_max(struct hlsl_ctx *ctx, struct hlsl_constant_value *dst, const struct hlsl_type *dst_type,
const struct hlsl_ir_constant *src1, const struct hlsl_ir_constant *src2)
{
@ -647,6 +686,10 @@ bool hlsl_fold_constant_exprs(struct hlsl_ctx *ctx, struct hlsl_ir_node *instr,
success = fold_equal(ctx, &res, instr->data_type, arg1, arg2);
break;
case HLSL_OP2_LESS:
success = fold_less(ctx, &res, instr->data_type, arg1, arg2);
break;
case HLSL_OP2_MAX:
success = fold_max(ctx, &res, instr->data_type, arg1, arg2);
break;