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util/prim_restart: use more direct conversion for restart index

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Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11363>
This commit is contained in:
Mike Blumenkrantz 2021-06-14 15:20:58 -04:00 • committed by Marge Bot
parent 74abd5df0e
commit 14ab4e9a9b
1 changed files with 2 additions and 8 deletions
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10
src/gallium/auxiliary/util/u_prim_restart.h
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@ -63,14 +63,8 @@ util_draw_vbo_without_prim_restart(struct pipe_context *context,
static inline unsigned
util_prim_restart_index_from_size(unsigned index_size)
{
if (index_size == 1)
return 0xff;
if (index_size == 2)
return 0xffff;
if (index_size == 4)
return 0xffffffff;
unreachable("unknown index size passed");
return 0;
/* 1 -> 0xff, 2 -> 0xffff, 4 -> 0xffffffff */
return 0xffffffffu >> 8 * (4 - index_size);
}
#ifdef __cplusplus