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vkd3d-shader/hlsl: Put synthetic variables into a dummy scope.

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Prevent them from being ever looked up.

Our naming scheme for synthetic variables already effectively prevents this, but
this is better for clarity. We also will need to be able to move some named
variables into a dummy scope to account for complexities around function
definition and declarations.
This commit is contained in:
Zebediah Figura
2023-01-31 22:18:35 -06:00
committed by Alexandre Julliard
parent 8755a92196
commit 25d49b518d
Notes: Alexandre Julliard 2023-02-07 22:15:32 +01:00 
Approved-by: Francisco Casas (@fcasas)
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/77
2 changed files with 25 additions and 6 deletions
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29
libs/vkd3d-shader/hlsl.c
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@@ -804,7 +804,7 @@ struct hlsl_ir_var *hlsl_new_synthetic_var(struct hlsl_ctx *ctx, const char *tem
var = hlsl_new_var(ctx, name, type, *loc, NULL, 0, NULL);
hlsl_release_string_buffer(ctx, string);
if (var)
list_add_tail(&ctx->globals->vars, &var->scope_entry);
list_add_tail(&ctx->dummy_scope->vars, &var->scope_entry);
return var;
}
@@ -1258,18 +1258,28 @@ static int compare_hlsl_types_rb(const void *key, const struct rb_entry *entry)
return strcmp(name, type->name);
}
static struct hlsl_scope *hlsl_new_scope(struct hlsl_ctx *ctx, struct hlsl_scope *upper)
{
struct hlsl_scope *scope;
if (!(scope = hlsl_alloc(ctx, sizeof(*scope))))
return NULL;
list_init(&scope->vars);
rb_init(&scope->types, compare_hlsl_types_rb);
scope->upper = upper;
list_add_tail(&ctx->scopes, &scope->entry);
return scope;
}
void hlsl_push_scope(struct hlsl_ctx *ctx)
{
struct hlsl_scope *new_scope;
if (!(new_scope = hlsl_alloc(ctx, sizeof(*new_scope))))
if (!(new_scope = hlsl_new_scope(ctx, ctx->cur_scope)))
return;
TRACE("Pushing a new scope.\n");
list_init(&new_scope->vars);
rb_init(&new_scope->types, compare_hlsl_types_rb);
new_scope->upper = ctx->cur_scope;
ctx->cur_scope = new_scope;
list_add_tail(&ctx->scopes, &new_scope->entry);
}
void hlsl_pop_scope(struct hlsl_ctx *ctx)
@@ -2572,6 +2582,13 @@ static bool hlsl_ctx_init(struct hlsl_ctx *ctx, const char *source_name,
ctx->matrix_majority = HLSL_COLUMN_MAJOR;
list_init(&ctx->scopes);
if (!(ctx->dummy_scope = hlsl_new_scope(ctx, NULL)))
{
vkd3d_free((void *)ctx->source_files[0]);
vkd3d_free(ctx->source_files);
return false;
}
hlsl_push_scope(ctx);
ctx->globals = ctx->cur_scope;