diff options
| -rw-r--r-- | src/glsl/ast_to_hir.cpp | 54 |
1 files changed, 41 insertions, 13 deletions
diff --git a/src/glsl/ast_to_hir.cpp b/src/glsl/ast_to_hir.cpp index b73e6205905..301a2591db6 100644 --- a/src/glsl/ast_to_hir.cpp +++ b/src/glsl/ast_to_hir.cpp @@ -4016,35 +4016,48 @@ ast_type_specifier::hir(exec_list *instructions, } -ir_rvalue * -ast_struct_specifier::hir(exec_list *instructions, - struct _mesa_glsl_parse_state *state) +/** + * Process a structure or interface block tree into an array of structure fields + * + * After parsing, where there are some syntax differnces, structures and + * interface blocks are almost identical. They are similar enough that the + * AST for each can be processed the same way into a set of + * \c glsl_struct_field to describe the members. + * + * \return + * The number of fields processed. A pointer to the array structure fields is + * stored in \c *fields_ret. + */ +unsigned +ast_process_structure_or_interface_block(exec_list *instructions, + struct _mesa_glsl_parse_state *state, + exec_list *declarations, + YYLTYPE &loc, + glsl_struct_field **fields_ret) { unsigned decl_count = 0; - /* Make an initial pass over the list of structure fields to determine how + /* Make an initial pass over the list of fields to determine how * many there are. Each element in this list is an ast_declarator_list. * This means that we actually need to count the number of elements in the * 'declarations' list in each of the elements. */ - foreach_list_typed (ast_declarator_list, decl_list, link, - &this->declarations) { + foreach_list_typed (ast_declarator_list, decl_list, link, declarations) { foreach_list_const (decl_ptr, & decl_list->declarations) { decl_count++; } } - /* Allocate storage for the structure fields and process the field + /* Allocate storage for the fields and process the field * declarations. As the declarations are processed, try to also convert * the types to HIR. This ensures that structure definitions embedded in - * other structure definitions are processed. + * other structure definitions or in interface blocks are processed. */ glsl_struct_field *const fields = ralloc_array(state, glsl_struct_field, decl_count); unsigned i = 0; - foreach_list_typed (ast_declarator_list, decl_list, link, - &this->declarations) { + foreach_list_typed (ast_declarator_list, decl_list, link, declarations) { const char *type_name; decl_list->type->specifier->hir(instructions, state); @@ -4053,7 +4066,6 @@ ast_struct_specifier::hir(exec_list *instructions, * embedded structure definitions have been removed from the language. */ if (state->es_shader && decl_list->type->specifier->structure != NULL) { - YYLTYPE loc = this->get_location(); _mesa_glsl_error(&loc, state, "Embedded structure definitions are " "not allowed in GLSL ES 1.00."); } @@ -4065,7 +4077,6 @@ ast_struct_specifier::hir(exec_list *instructions, &decl_list->declarations) { const struct glsl_type *field_type = decl_type; if (decl->is_array) { - YYLTYPE loc = decl->get_location(); field_type = process_array_type(&loc, decl_type, decl->array_size, state); } @@ -4078,10 +4089,27 @@ ast_struct_specifier::hir(exec_list *instructions, assert(i == decl_count); + *fields_ret = fields; + return decl_count; +} + + +ir_rvalue * +ast_struct_specifier::hir(exec_list *instructions, + struct _mesa_glsl_parse_state *state) +{ + YYLTYPE loc = this->get_location(); + glsl_struct_field *fields; + unsigned decl_count = + ast_process_structure_or_interface_block(instructions, + state, + &this->declarations, + loc, + &fields); + const glsl_type *t = glsl_type::get_record_instance(fields, decl_count, this->name); - YYLTYPE loc = this->get_location(); if (!state->symbols->add_type(name, t)) { _mesa_glsl_error(& loc, state, "struct `%s' previously defined", name); } else { |