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

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Signed-off-by: Nikolay Sivov <nsivov@codeweavers.com>
This commit is contained in:
Nikolay Sivov 2023-09-12 18:31:03 +02:00 committed by Alexandre Julliard
parent c69562128a
commit c16c5caad8
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 31 additions and 0 deletions
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31
libs/vkd3d-shader/hlsl_constant_ops.c
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@ -202,6 +202,33 @@ static bool fold_cast(struct hlsl_ctx *ctx, struct hlsl_constant_value *dst,
return true; return true;
} }
static bool fold_fract(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;
float i;
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 = modff(src->value.u[k].f, &i);
break;
default:
FIXME("Fold 'fract' for type %s.\n", debug_hlsl_type(ctx, dst_type));
return false;
}
}
return true;
}
static bool fold_log2(struct hlsl_ctx *ctx, struct hlsl_constant_value *dst, const struct hlsl_type *dst_type, static bool fold_log2(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) const struct hlsl_ir_constant *src, const struct vkd3d_shader_location *loc)
{ {
@ -996,6 +1023,10 @@ bool hlsl_fold_constant_exprs(struct hlsl_ctx *ctx, struct hlsl_ir_node *instr,
success = fold_cast(ctx, &res, instr->data_type, arg1); success = fold_cast(ctx, &res, instr->data_type, arg1);
break; break;
case HLSL_OP1_FRACT:
success = fold_fract(ctx, &res, instr->data_type, arg1);
break;
case HLSL_OP1_LOG2: case HLSL_OP1_LOG2:
success = fold_log2(ctx, &res, instr->data_type, arg1, &instr->loc); success = fold_log2(ctx, &res, instr->data_type, arg1, &instr->loc);
break; break;