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st/oxr: Add OXR_FRAME_TIMING_SPEW var to print basic frame timing information

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This commit is contained in:
Christoph Haag 2020-11-05 20:07:53 +01:00
parent 2a00c9f09e
commit 5478bad3d0
2 changed files with 49 additions and 0 deletions
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5
src/xrt/state_trackers/oxr/oxr_objects.h
View file

@ -1330,6 +1330,11 @@ struct oxr_session
*/
float ipd_meters;
/*!
* Frame timing debug output.
*/
bool frame_timing_spew;
/*!
* To pipe swapchain creation to right code.
*/

44
src/xrt/state_trackers/oxr/oxr_session.c
View file

@ -44,6 +44,7 @@
DEBUG_GET_ONCE_NUM_OPTION(ipd, "OXR_DEBUG_IPD_MM", 63)
DEBUG_GET_ONCE_BOOL_OPTION(frame_timing_spew, "OXR_FRAME_TIMING_SPEW", false)
#define CALL_CHK(call) \
if ((call) == XRT_ERROR_IPC_FAILURE) { \
@ -499,6 +500,22 @@ oxr_session_views(struct oxr_logger *log,
return oxr_session_success_result(sess);
}
static double
ns_to_ms(int64_t ns)
{
double ms = ((double)ns) * 1. / 1000. * 1. / 1000.;
return ms;
}
static double
ts_ms(struct oxr_session *sess)
{
timepoint_ns now = time_state_get_now(sess->sys->inst->timekeeping);
int64_t monotonic =
time_state_ts_to_monotonic_ns(sess->sys->inst->timekeeping, now);
return ns_to_ms(monotonic);
}
XrResult
oxr_session_frame_wait(struct oxr_logger *log,
struct oxr_session *sess,
@ -525,10 +542,20 @@ oxr_session_frame_wait(struct oxr_logger *log,
sess->active_wait_frames++;
os_mutex_unlock(&sess->active_wait_frames_lock);
if (sess->frame_timing_spew) {
oxr_log(log, "Called at %8.3fms", ts_ms(sess));
}
// A subsequent xrWaitFrame call must: block until the previous frame
// has been begun
os_semaphore_wait(&sess->sem, 0);
if (sess->frame_timing_spew) {
oxr_log(log,
"Finished waiting for previous frame begin at %8.3fms",
ts_ms(sess));
}
uint64_t predicted_display_time;
uint64_t predicted_display_period;
CALL_CHK(xrt_comp_wait_frame(xc, &sess->frame_id.waited,
@ -553,6 +580,15 @@ oxr_session_frame_wait(struct oxr_logger *log,
frameState->predictedDisplayTime);
}
if (sess->frame_timing_spew) {
oxr_log(log,
"Waiting finished at %8.3fms. Predicted display time "
"%8.3fms, "
"period %8.3fms",
ts_ms(sess), ns_to_ms(predicted_display_time),
ns_to_ms(predicted_display_period));
}
return oxr_session_success_result(sess);
}
@ -1867,6 +1903,13 @@ oxr_session_frame_end(struct oxr_logger *log,
frameEndInfo->displayTime);
}
int64_t timestamp = time_state_ts_to_monotonic_ns(
sess->sys->inst->timekeeping, frameEndInfo->displayTime);
if (sess->frame_timing_spew) {
oxr_log(log, "End frame at %8.3fms with display time %8.3fms",
ts_ms(sess), ns_to_ms(timestamp));
}
struct xrt_compositor *xc = sess->compositor;
/*
@ -2250,6 +2293,7 @@ oxr_session_create(struct oxr_logger *log,
}
sess->ipd_meters = debug_get_num_option_ipd() / 1000.0f;
sess->frame_timing_spew = debug_get_bool_option_frame_timing_spew();
oxr_session_change_state(log, sess, XR_SESSION_STATE_IDLE);
oxr_session_change_state(log, sess, XR_SESSION_STATE_READY);