2 files changed, 17 insertions, 0 deletions
diff --git a/src/mapi/glapi/gen/gl_gentable.py b/src/mapi/glapi/gen/gl_gentable.py
index 2f54d1d5792..50153bbabd5 100644
--- a/src/mapi/glapi/gen/gl_gentable.py
+++ b/src/mapi/glapi/gen/gl_gentable.py
@@ -56,6 +56,7 @@ header = """/* GLXEXT is the define used in the xserver when the GLX extension i
 #endif
 #include <stdlib.h>
 #include <stdio.h>
+#include <string.h>
 
 #include "main/glheader.h"
 
@@ -144,6 +145,19 @@ _glapi_create_table_from_handle(void *handle, const char *symbol_prefix) {
 
     return disp;
 }
+
+void
+ _glapi_table_patch(struct _glapi_table *table, const char *name, void *wrapper)
+{
+   for (int func_index = 0; func_index < GLAPI_TABLE_COUNT; ++func_index) {
+      if (!strcmp(_glapi_table_func_names[func_index], name)) {
+            ((void **)table)[func_index] = wrapper;
+            return;
+         }
+   }
+   fprintf(stderr, "could not patch %s in dispatch table\\n", name);
+}
+
 """
 
 
diff --git a/src/mapi/glapi/glapi.h b/src/mapi/glapi/glapi.h
index f1ad4c1b5e8..d5d4e0a03a6 100644
--- a/src/mapi/glapi/glapi.h
+++ b/src/mapi/glapi/glapi.h
@@ -161,6 +161,9 @@ _glapi_get_proc_name(unsigned int offset);
 #if defined(GLX_USE_APPLEGL) || defined(GLX_USE_WINDOWSGL)
 _GLAPI_EXPORT struct _glapi_table *
 _glapi_create_table_from_handle(void *handle, const char *symbol_prefix);
+
+_GLAPI_EXPORT void
+_glapi_table_patch(struct _glapi_table *, const char *name, void *wrapper);
 #endif