[Bug 41913] [865] intel/intel_bufmgr_gem.c:1361: do_bo_emit_reloc: Assertion `offset <= bo->size - 4' failed.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=41913

Eric Anholt <eric at anholt.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |RESOLVED
         Resolution|                            |FIXED

--- Comment #3 from Eric Anholt <eric at anholt.net> 2012-03-02 17:51:05 PST ---
3 links to bug reports elsewhere instead of putting the info in the bug report,
and none of them even have a backtrace.  Sigh.

Anyway, this got fixed thanks to another bug report:

commit 024ece7523f1735d2fca0067c0a3bdcf53fde8f9
Author: Kurt Roeckx <kurt at roeckx.be>
Date:   Fri Mar 2 15:34:45 2012 -0800

    i915: Compute maximum number of verts using the actual batchbuffer size.

    We were looking at the size of batch.map for how big the batchbuffer
    was, but on 865 we just use a single-page batchbuffer due to hardware
    limits.

    v2: Removed check for sizeof map < bo->size, since that's always false.
        [change by anholt]
    NOTE: This is a candidate for release branches.
    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=41495

33b07893e92dcee495908c549be872887096c894
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Wed Nov 9 22:21:16 2011 +0000

    i830: Compute initial number of vertices from remaining batch space

    In order to prevent an overflow of the batch buffer when emitting
    triangles, we need to limit the initial primitive to fit within the
    current batch. To do we need to measure the remaining space and thence
    compute the maximum number of vertices that fit into that space.

    Reported-by: Kurt Roeckx <kurt at roeckx.be>
    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=41495
    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
    Reviewed-by: Eric Anholt <eric at anholt.net>
    NOTE: This is a candidate for release branches.

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