mirrors/monado
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/monado/monado.git synced 2024-12-28 18:46:18 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

u/frame_times_widget: Optimize FPS calculation

Browse source 
Do so using precomputed frame timings.
This commit is contained in:
meng.jiao 2023-12-05 16:50:58 +08:00 committed by Jakob Bornecrantz
parent ad6f7de04b
commit 7e22fa5744
1 changed files with 4 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
src/xrt/auxiliary/util/u_frame_times_widget.h
View file

@ -47,18 +47,16 @@ u_frame_times_widget_push_sample(struct u_frame_times_widget *widget, uint64_t n
// update fps only once every FPS_NUM_TIMINGS
if (widget->index == 0) {
float total_s = 0;
float total_ms = 0;
// frame *timings* are durations between *times*
int NUM_FRAME_TIMINGS = FPS_WIDGET_NUM_FRAME_TIMES - 1;
for (int i = 0; i < NUM_FRAME_TIMINGS; i++) {
uint64_t frametime_ns = widget->times_ns[i + 1] - widget->times_ns[i];
float frametime_s = (float)time_ns_to_s(frametime_ns);
total_s += frametime_s;
total_ms += widget->timings_ms[i];
}
float avg_frametime_s = total_s / ((float)NUM_FRAME_TIMINGS);
widget->fps = 1.f / avg_frametime_s;
float avg_frametime_ms = total_ms / ((float)NUM_FRAME_TIMINGS);
widget->fps = 1000.f / avg_frametime_ms;
}
widget->times_ns[widget->index] = new_frame_time;