vbo: cache last dlist vertex in malloced memory

Avoids repeated mapping of the VBO buffer on display list replay.  We
need access to the final vertex in order to update the GL current attrib
values.

1 files changed, 7 insertions, 0 deletions

diff --git a/src/mesa/vbo/vbo_save.h b/src/mesa/vbo/vbo_save.h
index 9558f838837..86bbd24f7b1 100644
--- a/src/mesa/vbo/vbo_save.h
+++ b/src/mesa/vbo/vbo_save.h
@@ -64,6 +64,13 @@ struct vbo_save_vertex_list {
    GLubyte attrsz[VBO_ATTRIB_MAX];
    GLuint vertex_size;
 
+   /* Copy of the final vertex from node->vertex_store->bufferobj.
+    * Keep this in regular (non-VBO) memory to avoid repeated
+    * map/unmap of the VBO when updating GL current data.
+    */
+   GLfloat *current_data;
+   GLuint current_size;
+
    GLuint buffer_offset;
    GLuint count;
    GLuint wrap_count;		/* number of copied vertices at start */