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[client] main: add graph for time spent rendering

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This is the time spent in the on_render function, not the time between
frames. Having this information helps diagnose slowdowns in renderers.
This commit is contained in:
Quantum 2021-08-03 06:34:55 -04:00 committed by Geoffrey McRae
parent 9192e2039a
commit 62cd5e9c57
2 changed files with 10 additions and 4 deletions
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13
client/src/main.c
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@ -242,6 +242,7 @@ static int renderThread(void * unused)
const bool invalidate = atomic_exchange(&g_state.invalidateWindow, false);
const uint64_t renderStart = nanotime();
LG_LOCK(g_state.lgrLock);
if (!g_state.lgr->render(g_state.lgrData, g_params.winRotate, newFrame,
invalidate))
@ -250,6 +251,7 @@ static int renderThread(void * unused)
break;
}
LG_UNLOCK(g_state.lgrLock);
ringbuffer_push(g_state.renderDuration, &(float) {(nanotime() - renderStart) * 1e-6f});
const uint64_t t = nanotime();
const uint64_t delta = t - g_state.lastRenderTime;
@ -828,10 +830,12 @@ static int lg_run(void)
app_registerOverlay(&LGOverlayConfig, NULL);
// initialize metrics ringbuffers
g_state.renderTimings = ringbuffer_new(256, sizeof(float));
g_state.frameTimings = ringbuffer_new(256, sizeof(float));
overlayGraph_register("RENDER", g_state.renderTimings, 0.0f, 50.0f);
overlayGraph_register("UPLOAD", g_state.frameTimings , 0.0f, 50.0f);
g_state.renderTimings = ringbuffer_new(256, sizeof(float));
g_state.frameTimings = ringbuffer_new(256, sizeof(float));
g_state.renderDuration = ringbuffer_new(256, sizeof(float));
overlayGraph_register("FRAME" , g_state.renderTimings , 0.0f, 50.0f);
overlayGraph_register("UPLOAD", g_state.frameTimings , 0.0f, 50.0f);
overlayGraph_register("RENDER", g_state.renderDuration, 0.0f, 2.0f);
initImGuiKeyMap(g_state.io->KeyMap);
@ -1234,6 +1238,7 @@ static void lg_shutdown(void)
// free metrics ringbuffers
ringbuffer_free(&g_state.renderTimings);
ringbuffer_free(&g_state.frameTimings );
ringbuffer_free(&g_state.renderDuration);
free(g_state.fontName);
igDestroyContext(NULL);

1
client/src/main.h
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@ -119,6 +119,7 @@ struct AppState
uint64_t lastRenderTime;
bool lastRenderTimeValid;
RingBuffer renderTimings;
RingBuffer renderDuration;
RingBuffer frameTimings;
atomic_uint_least64_t pendingCount;