vbo: add basevertex when looking up elements for vbo splitting

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97351
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
(cherry picked from commit 659dc10d32b5a2ca61d23f2ae43c9e241aff6a26)

diff --git a/src/mesa/vbo/vbo_split_copy.c b/src/mesa/vbo/vbo_split_copy.c
index cb27ef9..1c3474c 100644 (file)
--- a/src/mesa/vbo/vbo_split_copy.c
+++ b/src/mesa/vbo/vbo_split_copy.c
@@ -243,7 +243,7 @@ begin( struct copy_context *copy, GLenum mode, GLboolean begin_flag )
 static GLuint
 elt(struct copy_context *copy, GLuint elt_idx)
 {
-   GLuint elt = copy->srcelt[elt_idx];
+   GLuint elt = copy->srcelt[elt_idx] + copy->prim->basevertex;
    GLuint slot = elt & (ELT_TABLE_SIZE-1);
 
 /*    printf("elt %d\n", elt); */