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kms_cursor_crc: Add test for unthrottled cursor movement

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We've had  bugs in the past that caused cursor updates to be synced to
vblank, resulting in sluggish cursor movement.  Add a test to try to
make sure we don't regress and reintroduce these bugs.

Cc: kalyan.kondapally@intel.com
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Thomas Wood <thomas.wood@intel.com>
This commit is contained in:
Matt Roper 2015-10-15 16:54:32 -07:00 committed by Thomas Wood
parent e3ac13e16a
commit cd99ddead3
1 changed files with 42 additions and 0 deletions
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42
tests/kms_cursor_crc.c
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@ -55,6 +55,7 @@ typedef struct {
igt_crc_t ref_crc;
int left, right, top, bottom;
int screenw, screenh;
int refresh;
int curw, curh; /* cursor size */
int cursor_max_w, cursor_max_h;
igt_pipe_crc_t *pipe_crc;
@ -327,6 +328,7 @@ static bool prepare_crtc(data_t *data, igt_output_t *output,
data->screenh = mode->vdisplay;
data->curw = cursor_w;
data->curh = cursor_h;
data->refresh = mode->vrefresh;
/* make sure cursor is disabled */
cursor_disable(data);
@ -479,6 +481,42 @@ static void test_cursor_size(data_t *data)
}
}
static void test_rapid_movement(data_t *data)
{
struct timeval start, end, delta;
int x = 0, y = 0;
long usec;
int crtc_id = data->output->config.crtc->crtc_id;
igt_assert_eq(drmModeSetCursor(data->drm_fd, crtc_id,
data->fb.gem_handle, data->curw, data->curh), 0);
gettimeofday(&start, NULL);
for ( ; x < 100; x++)
igt_assert_eq(drmModeMoveCursor(data->drm_fd, crtc_id, x, y), 0);
for ( ; y < 100; y++)
igt_assert_eq(drmModeMoveCursor(data->drm_fd, crtc_id, x, y), 0);
for ( ; x > 0; x--)
igt_assert_eq(drmModeMoveCursor(data->drm_fd, crtc_id, x, y), 0);
for ( ; y > 0; y--)
igt_assert_eq(drmModeMoveCursor(data->drm_fd, crtc_id, x, y), 0);
gettimeofday(&end, NULL);
/*
* We've done 400 cursor updates now. If we're being throttled to
* vblank, then that would take roughly 400/refresh seconds. If the
* elapsed time is greater than 90% of that value, we'll consider it
* a failure (since cursor updates shouldn't be throttled).
*/
timersub(&end, &start, &delta);
usec = delta.tv_usec + 1000000 * delta.tv_sec;
igt_assert_lt(usec, 0.9 * 400 * 1000000 / data->refresh);
igt_assert_eq(drmModeSetCursor(data->drm_fd, crtc_id,
0, data->curw, data->curh), 0);
}
static void run_test_generic(data_t *data)
{
int cursor_size;
@ -510,6 +548,10 @@ static void run_test_generic(data_t *data)
data->flags = 0;
}
igt_subtest_f("cursor-%dx%d-rapid-movement", w, h) {
run_test(data, test_rapid_movement, w, h);
}
igt_fixture
igt_remove_fb(data->drm_fd, &data->fb);