[Mesa-dev] [PATCH] vbo: count min/max_index before vbo->draw_prims

[Eric Anholt]

On Thu, 22 Dec 2011 18:55:50 +0800, Yuanhan Liu <yuanhan.liu at linux.intel.com> wrote:
> For the case that index data is stored in element array buffer object,
> and user called glMultiDrawElements, count the min/max_index before
> calling vbo->draw_prims. vbo_get_minmax_index() isn't friendly to this
> case. So do it while building the prim info.
> 
> Signed-off-by: Yuanhan Liu <yuanhan.liu at linux.intel.com>

I'm really failing to understand what this commit is for.  Does it fix
some testcase?  Is it improving performance somewhere?  It appears to be
"unconditionally compute a total min/max index for a multiple-primitive
draw call", but I don't understand why we would unconditionally need
that.
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