diff options
Diffstat (limited to 'src/glsl/glcpp/glcpp-parse.y')
| -rw-r--r-- | src/glsl/glcpp/glcpp-parse.y | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/src/glsl/glcpp/glcpp-parse.y b/src/glsl/glcpp/glcpp-parse.y index 5bb2891c475..bdc598f31b8 100644 --- a/src/glsl/glcpp/glcpp-parse.y +++ b/src/glsl/glcpp/glcpp-parse.y @@ -1770,11 +1770,27 @@ static void _check_for_reserved_macro_name (glcpp_parser_t *parser, YYLTYPE *loc, const char *identifier) { - /* According to the GLSL specification, macro names starting with "__" - * or "GL_" are reserved for future use. So, don't allow them. + /* Section 3.3 (Preprocessor) of the GLSL 1.30 spec (and later) and + * the GLSL ES spec (all versions) say: + * + * "All macro names containing two consecutive underscores ( __ ) + * are reserved for future use as predefined macro names. All + * macro names prefixed with "GL_" ("GL" followed by a single + * underscore) are also reserved." + * + * The intention is that names containing __ are reserved for internal + * use by the implementation, and names prefixed with GL_ are reserved + * for use by Khronos. Since every extension adds a name prefixed + * with GL_ (i.e., the name of the extension), that should be an + * error. Names simply containing __ are dangerous to use, but should + * be allowed. + * + * A future version of the GLSL specification will clarify this. */ if (strstr(identifier, "__")) { - glcpp_error (loc, parser, "Macro names containing \"__\" are reserved.\n"); + glcpp_warning(loc, parser, + "Macro names containing \"__\" are reserved " + "for use by the implementation.\n"); } if (strncmp(identifier, "GL_", 3) == 0) { glcpp_error (loc, parser, "Macro names starting with \"GL_\" are reserved.\n"); |