mesa: Add assert to _mesa_primitive_restart_index.

Make sure the inde_size parameter is meant to be in bytes.

Reviewed-by: Brian Paul <brianp@vmware.com>
Signed-off-by: Mathias Fröhlich <Mathias.Froehlich@web.de>

diff --git a/src/mesa/main/varray.h b/src/mesa/main/varray.h
index 0be57971bd7eac40fe9e2063db6f125db3a8588e..2831720edfca9f8187c70f0296c7bb9269f2041c 100644 (file)
--- a/src/mesa/main/varray.h
+++ b/src/mesa/main/varray.h
@@ -316,6 +316,9 @@ static inline unsigned
 _mesa_primitive_restart_index(const struct gl_context *ctx,
                               unsigned index_size)
 {
+   /* The index_size parameter is menat to be in bytes. */
+   assert(index_size == 1 || index_size == 2 || index_size == 4);
+
    /* From the OpenGL 4.3 core specification, page 302:
     * "If both PRIMITIVE_RESTART and PRIMITIVE_RESTART_FIXED_INDEX are
     *  enabled, the index value determined by PRIMITIVE_RESTART_FIXED_INDEX