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vkd3d-shader/hlsl: Add constant folding for 'sat'.

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Signed-off-by: Nikolay Sivov <nsivov@codeweavers.com>
This commit is contained in:
Nikolay Sivov 2023-09-12 18:38:00 +02:00 committed by Alexandre Julliard
parent 89c99cccce
commit 485cbe8cb7
Notes: Alexandre Julliard 2023-09-22 22:47:14 +02:00 
Approved-by: Giovanni Mascellani (@giomasce)
Approved-by: Zebediah Figura (@zfigura)
Approved-by: Francisco Casas (@fcasas)
Approved-by: Henri Verbeet (@hverbeet)
Approved-by: Alexandre Julliard (@julliard)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/341
1 changed files with 30 additions and 0 deletions
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30
libs/vkd3d-shader/hlsl_constant_ops.c
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@ -379,6 +379,32 @@ static bool fold_rcp(struct hlsl_ctx *ctx, struct hlsl_constant_value *dst, cons
return true;
}
static bool fold_sat(struct hlsl_ctx *ctx, struct hlsl_constant_value *dst, const struct hlsl_type *dst_type,
const struct hlsl_ir_constant *src)
{
enum hlsl_base_type type = dst_type->base_type;
unsigned int k;
assert(type == src->node.data_type->base_type);
for (k = 0; k < dst_type->dimx; ++k)
{
switch (type)
{
case HLSL_TYPE_FLOAT:
case HLSL_TYPE_HALF:
dst->u[k].f = min(max(0.0f, src->value.u[k].f), 1.0f);
break;
default:
FIXME("Fold 'sat' for type %s.\n", debug_hlsl_type(ctx, dst_type));
return false;
}
}
return true;
}
static bool fold_sqrt(struct hlsl_ctx *ctx, struct hlsl_constant_value *dst, const struct hlsl_type *dst_type,
const struct hlsl_ir_constant *src, const struct vkd3d_shader_location *loc)
{
@ -1069,6 +1095,10 @@ bool hlsl_fold_constant_exprs(struct hlsl_ctx *ctx, struct hlsl_ir_node *instr,
success = fold_rcp(ctx, &res, instr->data_type, arg1, &instr->loc);
break;
case HLSL_OP1_SAT:
success = fold_sat(ctx, &res, instr->data_type, arg1);
break;
case HLSL_OP1_SQRT:
success = fold_sqrt(ctx, &res, instr->data_type, arg1, &instr->loc);
break;