mesa: add KHR_no_error support to glEndTransformFeedback()

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
diff --git a/src/mapi/glapi/gen/GL3x.xml b/src/mapi/glapi/gen/GL3x.xml
index 54e99e7..3a1bfb8 100644
--- a/src/mapi/glapi/gen/GL3x.xml
+++ b/src/mapi/glapi/gen/GL3x.xml
@@ -210,7 +210,7 @@
     <param name="mode" type="GLenum"/>
   </function>
 
-  <function name="EndTransformFeedback" es2="3.0">
+  <function name="EndTransformFeedback" es2="3.0" no_error="true">
   </function>
 
   <function name="BindBufferRange" es2="3.0" no_error="true">
diff --git a/src/mesa/main/transformfeedback.c b/src/mesa/main/transformfeedback.c
index d1d695c..8e6ea9c 100644
--- a/src/mesa/main/transformfeedback.c
+++ b/src/mesa/main/transformfeedback.c
@@ -512,6 +512,14 @@
 
 
 void GLAPIENTRY
+_mesa_EndTransformFeedback_no_error(void)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   end_transform_feedback(ctx, ctx->TransformFeedback.CurrentObject);
+}
+
+
+void GLAPIENTRY
 _mesa_EndTransformFeedback(void)
 {
    struct gl_transform_feedback_object *obj;
diff --git a/src/mesa/main/transformfeedback.h b/src/mesa/main/transformfeedback.h
index 6f28d81..148a776 100644
--- a/src/mesa/main/transformfeedback.h
+++ b/src/mesa/main/transformfeedback.h
@@ -59,6 +59,9 @@
 extern void GLAPIENTRY
 _mesa_BeginTransformFeedback(GLenum mode);
 
+void GLAPIENTRY
+_mesa_EndTransformFeedback_no_error(void);
+
 extern void GLAPIENTRY
 _mesa_EndTransformFeedback(void);