vkd3d-shader/hlsl: Parse function call syntax on state blocks.

Approved-by: Elizabeth Figura (@zfigura)
Approved-by: Henri Verbeet (@hverbeet)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/915

libs/vkd3d-shader/fx.c

@@ -1290,6 +1290,9 @@ static bool state_block_contains_state(const char *name, unsigned int start, str
 
     for (i = start; i < block->count; ++i)
     {
+        if (block->entries[i]->is_function_call)
+            continue;
+
         if (!ascii_strcasecmp(block->entries[i]->name, name))
             return true;
     }

libs/vkd3d-shader/hlsl.h

@@ -507,22 +507,31 @@ struct hlsl_ir_var
  *     name[lhs_index] = args[0]
  *       - or -
  *     name[lhs_index] = {args[0], args[1], ...};
+ *
+ * This struct also represents function call syntax:
+ *     name(args[0], args[1], ...)
  */
 struct hlsl_state_block_entry
 {
-    /* For assignments, the name in the lhs. */
+    /* Whether this entry is a function call. */
+    bool is_function_call;
+
+    /* For assignments, the name in the lhs.
+     * For functions, the name of the function. */
     char *name;
     /* Resolved format-specific property identifier. */
     unsigned int name_id;
 
-    /* Whether the lhs in the assignment is indexed and, in that case, its index. */
+    /* For assignments, whether the lhs of an assignment is indexed and, in
+     * that case, its index. */
     bool lhs_has_index;
     unsigned int lhs_index;
 
-    /* Instructions present in the rhs. */
+    /* Instructions present in the rhs or the function arguments. */
     struct hlsl_block *instrs;
 
-    /* For assignments, arguments of the rhs initializer. */
+    /* For assignments, arguments of the rhs initializer.
+     * For function calls, the arguments themselves. */
     struct hlsl_src *args;
     unsigned int args_count;
 };

libs/vkd3d-shader/hlsl.y

@@ -7379,6 +7379,32 @@ state_block:
                 hlsl_src_from_node(&entry->args[i], $5.args[i]);
             vkd3d_free($5.args);
 
+            $$ = $1;
+            state_block_add_entry($$, entry);
+        }
+    | state_block any_identifier '(' func_arguments ')' ';'
+        {
+            struct hlsl_state_block_entry *entry;
+            unsigned int i;
+
+            if (!(entry = hlsl_alloc(ctx, sizeof(*entry))))
+                YYABORT;
+
+            entry->is_function_call = true;
+
+            entry->name = $2;
+            entry->lhs_has_index = false;
+            entry->lhs_index = 0;
+
+            entry->instrs = $4.instrs;
+
+            entry->args_count = $4.args_count;
+            if (!(entry->args = hlsl_alloc(ctx, sizeof(*entry->args) * entry->args_count)))
+                YYABORT;
+            for (i = 0; i < entry->args_count; ++i)
+                hlsl_src_from_node(&entry->args[i], $4.args[i]);
+            vkd3d_free($4.args);
+
             $$ = $1;
             state_block_add_entry($$, entry);
         }