glsl: Make use of new _mesa_glsl_parse_state::check_version() function.

Previous to this patch, we were not very consistent about the errors
we generate when a shader tried to use a feature that is prohibited in
the current GLSL version.  Some error messages failed to mention the
GLSL version currently in use (or did so inaccurately), and some error
messages failed to mention the first GLSL version in which the given
feature is allowed.

This patch reworks all of the error checks to use the check_version()
function, which produces error messages in a standard form
(approximately "$FEATURE forbidden in $CURRENT_GLSL_VERSION
($REQUIRED_GLSL_VERSION required).").

Reviewed-by: Ian Romanick <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>
Acked-by: Carl Worth <[email protected]>

1 files changed, 11 insertions, 0 deletions

diff --git a/src/glsl/glsl_parser_extras.h b/src/glsl/glsl_parser_extras.h
index 597b49ef19d..17f63c0b3c4 100644
--- a/src/glsl/glsl_parser_extras.h
+++ b/src/glsl/glsl_parser_extras.h
@@ -125,6 +125,17 @@ struct _mesa_glsl_parse_state {
                       unsigned required_glsl_es_version,
                       YYLTYPE *locp, const char *fmt, ...) PRINTFLIKE(5, 6);
 
+   bool check_precision_qualifiers_allowed(YYLTYPE *locp)
+   {
+      return check_version(130, 100, locp,
+                           "precision qualifiers are forbidden");
+   }
+
+   bool check_bitwise_operations_allowed(YYLTYPE *locp)
+   {
+      return check_version(130, 0, locp, "bit-wise operations are forbidden");
+   }
+
    struct gl_context *const ctx;
    void *scanner;
    exec_list translation_unit;