hir_function.c

   1 struct ir_instruction *
   2 _mesa_ast_constructor_to_hir(const struct ast_node *n,
   3                              const struct ast_node *parameters,
   4                              struct _mesa_glsl_parse_state *state)
   5 {
   6    const struct ast_type_specifier *type = (struct ast_type_specifier *) n;
   7
   8
   9    /* There are effectively three kinds of constructors.  Each has its own set
  10     * of rules.
  11     *
  12     * * Built-in scalar, vector, and matrix types:  For each of these the only
  13     *   matching requirement is that the number of values supplied is
  14     *   sufficient to initialize all of the fields of the type.
  15     * * Array types: The number of initializers must match the size of the
  16     *   array, if a size is specified.  Each of the initializers must
  17     *   exactly match the base type of the array.
  18     * * Structure types: These initializers must exactly match the fields of
  19     *   the structure in order.  This is the most restrictive type.
  20     *
  21     * In all cases the built-in promotions from integer to floating-point types
  22     * are applied.
  23     */
  24
  25    if (type->is_array) {
  26       /* FINISHME */
  27    } else if ((type->type_specifier == ast_struct)
  28               || (type->type_specifier == ast_type_name)) {
  29       /* FINISHME */
  30    } else {
  31       const struct glsl_type *ctor_type;
  32
  33       /* Look-up the type, by name, in the symbol table.
  34        */
  35
  36
  37       /* Generate a series of assignments of constructor parameters to fields
  38        * of the object being initialized.
  39        */
  40    }
  41 }