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igt/gem_exec_alignment: Fix off-by-one in buffer objects

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When reducing the buffer count to fit into the aperture whilst aligned,
remember to adjust the pointer so that the batch is the last object!

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2016-02-05 15:55:40 +00:00
parent b081257d74
commit 6f7372f664
1 changed files with 3 additions and 3 deletions
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6
tests/gem_exec_alignment.c
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@ -119,7 +119,7 @@ static void many(int fd)
uint64_t factor = alignment / max_alignment;
execbuf.buffer_count = 2*count / factor;
execbuf.buffers_ptr =
(uintptr_t)(execobj + count - execbuf.buffer_count);
(uintptr_t)(execobj + count - execbuf.buffer_count + 1);
}
igt_debug("testing %lld x alignment=%#llx [%db]\n",
@ -127,7 +127,7 @@ static void many(int fd)
(long long)alignment,
find_last_bit(alignment)-1);
gem_execbuf(fd, &execbuf);
for(i = count - execbuf.buffer_count; i < count; i++) {
for(i = count - execbuf.buffer_count + 1; i < count; i++) {
igt_assert_eq_u64(execobj[i].alignment, alignment);
igt_assert_eq_u64(execobj[i].offset % alignment, 0);
}
@ -197,7 +197,7 @@ static void single(int fd)
igt_main
{
int fd;
int fd = -1;
igt_fixture
fd = drm_open_driver(DRIVER_INTEL);