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vo_opengl: fix out-of-bounds access in timer_pool_measure

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This was there even before the refactor, but the refactor exposed the
bug. I hate C's useless fucking modulo operator so much. I've gotten hit
by this exact bug way too many times.
This commit is contained in:
Niklas Haas 2017-09-11 02:07:04 +02:00
parent 0fe4a492c4
commit 8a4f2f0ac0
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1 changed files with 2 additions and 1 deletions
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video/out/opengl/utils.c
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@ -293,8 +293,9 @@ struct mp_pass_perf timer_pool_measure(struct timer_pool *pool)
if (!pool)
return (struct mp_pass_perf){0};
int last = (pool->sample_idx ? pool->sample_idx : VO_PERF_SAMPLE_COUNT) - 1;
struct mp_pass_perf res = {
.last = pool->samples[(pool->sample_idx - 1) % VO_PERF_SAMPLE_COUNT],
.last = pool->samples[last],
.avg = pool->sample_count > 0 ? pool->sum / pool->sample_count : 0,
.peak = pool->peak,
.count = pool->sample_count,