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draw: fix a regression in computing max elt

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gl can use elts without setting indices, in which case
our eltMax was set to 0 and always invoking the overflow
condition. So by default set eltMax to maximum, it will
be curbed by draw_set_indexes (if it ever comes) and if
not then it will let gl's glVertexPointer/glDrawArrays
work correctly. Fixes piglit's
triangle-rasterization-overdraw test.

Signed-off-by: Zack Rusin <zackr@vmware.com>
Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
This commit is contained in:
Zack Rusin 2013-06-13 13:34:57 -04:00
parent 41966fdb3b
commit 7807763dd8
1 changed files with 1 additions and 0 deletions
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src/gallium/auxiliary/draw/draw_context.c
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@ -138,6 +138,7 @@ boolean draw_init(struct draw_context *draw)
draw->clip_z = TRUE;
draw->pt.user.planes = (float (*) [DRAW_TOTAL_CLIP_PLANES][4]) &(draw->plane[0]);
draw->pt.user.eltMax = ~0;
if (!draw_pipeline_init( draw ))
return FALSE;