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vkd3d-shader/hlsl: Implement constant folding of 'sin' expressions.

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As encountered in tests/hlsl/trigonometry.shader_test.
This commit is contained in:
Henri Verbeet
2025-09-03 14:30:45 +02:00
parent d7a05d823c
commit 08e7806b7f
Notes: Henri Verbeet 2025-09-09 15:10:32 +02:00 
Approved-by: Henri Verbeet (@hverbeet)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/1716
1 changed files with 34 additions and 0 deletions
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34
libs/vkd3d-shader/hlsl_constant_ops.c
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@@ -544,6 +544,36 @@ static bool fold_sat(struct hlsl_ctx *ctx, struct hlsl_constant_value *dst, cons
return true;
}
static bool fold_sin(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->e.numeric.type;
unsigned int k;
VKD3D_ASSERT(type == src->node.data_type->e.numeric.type);
for (k = 0; k < dst_type->e.numeric.dimx; ++k)
{
switch (type)
{
case HLSL_TYPE_FLOAT:
case HLSL_TYPE_HALF:
dst->u[k].f = sinf(src->value.u[k].f);
break;
case HLSL_TYPE_DOUBLE:
dst->u[k].d = sin(src->value.u[k].d);
break;
default:
FIXME("Fold 'sin' 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)
{
@@ -1337,6 +1367,10 @@ bool hlsl_fold_constant_exprs(struct hlsl_ctx *ctx, struct hlsl_ir_node *instr,
success = fold_sat(ctx, &res, instr->data_type, arg1);
break;
case HLSL_OP1_SIN:
success = fold_sin(ctx, &res, instr->data_type, arg1);
break;
case HLSL_OP1_SQRT:
success = fold_sqrt(ctx, &res, instr->data_type, arg1, &instr->loc);
break;