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vkd3d-shader/hlsl: Implement sqrt() for SM1.

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This commit is contained in:
Nikolay Sivov
2023-01-24 15:44:39 +03:00
committed by Alexandre Julliard
parent b84b9349bf
commit 3c23e1713c
Notes: Alexandre Julliard 2023-01-25 22:43:43 +01:00 
Approved-by: Zebediah Figura (@zfigura)
Approved-by: Giovanni Mascellani (@giomasce)
Approved-by: Henri Verbeet (@hverbeet)
Approved-by: Alexandre Julliard (@julliard)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/69
1 changed files with 24 additions and 0 deletions
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24
libs/vkd3d-shader/hlsl_codegen.c
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@@ -1494,6 +1494,27 @@ static bool lower_division(struct hlsl_ctx *ctx, struct hlsl_ir_node *instr, voi
return true; return true;
} }
/* Lower SQRT to RSQ + RCP. */
static bool lower_sqrt(struct hlsl_ctx *ctx, struct hlsl_ir_node *instr, void *context)
{
struct hlsl_ir_expr *expr;
struct hlsl_ir_node *rsq;
if (instr->type != HLSL_IR_EXPR)
return false;
expr = hlsl_ir_expr(instr);
if (expr->op != HLSL_OP1_SQRT)
return false;
if (!(rsq = hlsl_new_unary_expr(ctx, HLSL_OP1_RSQ, expr->operands[0].node, instr->loc)))
return false;
list_add_before(&expr->node.entry, &rsq->entry);
expr->op = HLSL_OP1_RCP;
hlsl_src_remove(&expr->operands[0]);
hlsl_src_from_node(&expr->operands[0], rsq);
return true;
}
static bool lower_casts_to_bool(struct hlsl_ctx *ctx, struct hlsl_ir_node *instr, void *context) static bool lower_casts_to_bool(struct hlsl_ctx *ctx, struct hlsl_ir_node *instr, void *context)
{ {
struct hlsl_type *type = instr->data_type, *arg_type; struct hlsl_type *type = instr->data_type, *arg_type;
@@ -2905,7 +2926,10 @@ int hlsl_emit_bytecode(struct hlsl_ctx *ctx, struct hlsl_ir_function_decl *entry
while (progress); while (progress);
if (profile->major_version < 4) if (profile->major_version < 4)
{
transform_ir(ctx, lower_division, body, NULL); transform_ir(ctx, lower_division, body, NULL);
transform_ir(ctx, lower_sqrt, body, NULL);
}
transform_ir(ctx, validate_static_object_references, body, NULL); transform_ir(ctx, validate_static_object_references, body, NULL);