Add _mesa_glsl_warning to emit warnings to the shader log

2 files changed, 28 insertions, 0 deletions

diff --git a/glsl_parser_extras.cpp b/glsl_parser_extras.cpp
index 1eac1890af..de67e849df 100644
--- a/glsl_parser_extras.cpp
+++ b/glsl_parser_extras.cpp
@@ -71,6 +71,25 @@ _mesa_glsl_error(YYLTYPE *locp, _mesa_glsl_parse_state *state,
 }
 
 
+void
+_mesa_glsl_warning(const YYLTYPE *locp, const _mesa_glsl_parse_state *state,
+		   const char *fmt, ...)
+{
+   char buf[1024];
+   int len;
+   va_list ap;
+
+   len = snprintf(buf, sizeof(buf), "%u:%u(%u): warning: ",
+		  locp->source, locp->first_line, locp->first_column);
+
+   va_start(ap, fmt);
+   vsnprintf(buf + len, sizeof(buf) - len, fmt, ap);
+   va_end(ap);
+
+   printf("%s\n", buf);
+}
+
+
 bool
 _mesa_glsl_process_extension(const char *name, YYLTYPE *name_locp,
 			     const char *behavior, YYLTYPE *behavior_locp,
diff --git a/glsl_parser_extras.h b/glsl_parser_extras.h
index 15667ebb68..7759eda535 100644
--- a/glsl_parser_extras.h
+++ b/glsl_parser_extras.h
@@ -74,6 +74,15 @@ typedef struct YYLTYPE {
 extern void _mesa_glsl_error(YYLTYPE *locp, _mesa_glsl_parse_state *state,
 			     const char *fmt, ...);
 
+/**
+ * Emit a warning to the shader log
+ *
+ * \sa _mesa_glsl_error
+ */
+extern void _mesa_glsl_warning(const YYLTYPE *locp,
+			       const _mesa_glsl_parse_state *state,
+			       const char *fmt, ...);
+
 extern void _mesa_glsl_lexer_ctor(struct _mesa_glsl_parse_state *state,
 				  const char *string, size_t len);