draw: Add draw_set_index_buffer and others.

This commit adds draw_set_index_buffer, draw_set_mapped_index_buffer,
and draw_vbo.  The idea behind the new functions is that an index buffer
should be a state.

draw_arrays and draw_set_mapped_element_buffer are preserved, but the
latter will be removed soon.

1 files changed, 4 insertions, 2 deletions

diff --git a/src/gallium/auxiliary/draw/draw_pt_vsplit_tmp.h b/src/gallium/auxiliary/draw/draw_pt_vsplit_tmp.h
index 4bb57b1493..3f66f962e1 100644
--- a/src/gallium/auxiliary/draw/draw_pt_vsplit_tmp.h
+++ b/src/gallium/auxiliary/draw/draw_pt_vsplit_tmp.h
@@ -38,7 +38,8 @@ CONCAT(vsplit_primitive_, ELT_TYPE)(struct vsplit_frontend *vsplit,
                                     unsigned istart, unsigned icount)
 {
    struct draw_context *draw = vsplit->draw;
-   const ELT_TYPE *ib = (const ELT_TYPE *) draw->pt.user.elts;
+   const ELT_TYPE *ib = (const ELT_TYPE *)
+      ((const char *) draw->pt.user.elts + draw->pt.index_buffer.offset);
    const unsigned min_index = draw->pt.user.min_index;
    const unsigned max_index = draw->pt.user.max_index;
    const int elt_bias = draw->pt.user.eltBias;
@@ -119,7 +120,8 @@ CONCAT(vsplit_segment_cache_, ELT_TYPE)(struct vsplit_frontend *vsplit,
                                         boolean close, unsigned iclose)
 {
    struct draw_context *draw = vsplit->draw;
-   const ELT_TYPE *ib = (const ELT_TYPE *) draw->pt.user.elts;
+   const ELT_TYPE *ib = (const ELT_TYPE *)
+      ((const char *) draw->pt.user.elts + draw->pt.index_buffer.offset);
    const int ibias = draw->pt.user.eltBias;
    unsigned i;