- /* This should basically be multipass rendering over the same
- * unchanging set of VBO's. Would like the driver not to
- * re-upload the data, or swtnl not to re-transform the
- * vertices.
- */
- assert(split->max_index - split->min_index < split->limits->max_verts);
- min_index = split->min_index;
- max_index = split->max_index;
- }
- else {
- /* Non-indexed rendering. Cannot assume that the primitives are
- * ordered by increasing vertex, because of entrypoints like
- * MultiDrawArrays.
- */
- GLuint i;
- min_index = split->dstprim[0].start;
- max_index = min_index + split->dstprim[0].count - 1;
-
- for (i = 1; i < split->dstprim_nr; i++) {
- GLuint tmp_min = split->dstprim[i].start;
- GLuint tmp_max = tmp_min + split->dstprim[i].count - 1;
-
- if (tmp_min < min_index)
- min_index = tmp_min;
-
- if (tmp_max > max_index)
- max_index = tmp_max;
- }
+ ib = *split->ib;
+
+ ib.count = split->max_index - split->min_index + 1;
+ ib.ptr = (const void *)((const char *)ib.ptr +
+ split->min_index * _mesa_sizeof_type(ib.type));
+
+ /* Rebase the primitives to save index buffer entries. */
+ for (i = 0; i < split->dstprim_nr; i++)
+ split->dstprim[i].start -= split->min_index;