tree d0462eb722d84103a06c54b060b2ded96d369161
parent c47f1d6350c5902d018f9ded484aff31e31e12be
author Nicolai Hähnle <nicolai.haehnle@amd.com> 1487583973 +0100
committer Emil Velikov <emil.l.velikov@gmail.com> 1488375281 +0000

radeonsi: handle MultiDrawIndirect in si_get_draw_start_count

Also handle the GL_ARB_indirect_parameters case where the count itself
is in a buffer.

Use transfers rather than mapping the buffers directly. This anticipates
the possibility that the buffers are sparse (once ARB_sparse_buffer is
implemented), in which case they cannot be mapped directly.

Fixes GL45-CTS.gtf43.GL3Tests.multi_draw_indirect.multi_draw_indirect_type
on <= CIK.

v2:
- unmap the indirect buffer correctly
- handle the corner case where we have indirect draws, but all of them
  have count 0.

Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Acked-by: Edward O'Callaghan <funfunctor@folklore1984.net>
(cherry picked from commit 6a1d9684f4ec1e1eed49bc14749be7b7784277ec)