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Merge branch 'hanicef-fps-counter' into 'master'

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Fix inaccuracies in FPS counter

See merge request KartKrew/Kart!1456
This commit is contained in:
Oni 2023-09-04 00:26:56 +00:00
commit 70207076c1
1 changed files with 8 additions and 30 deletions
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38
src/screen.c
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@ -531,11 +531,11 @@ double averageFPS = 0.0f;
#define USE_FPS_SAMPLES #define USE_FPS_SAMPLES
#ifdef USE_FPS_SAMPLES #ifdef USE_FPS_SAMPLES
#define FPS_SAMPLE_RATE (0.05) // How often to update FPS samples, in seconds #define MAX_FRAME_TIME 0.05
#define NUM_FPS_SAMPLES (16) // Number of samples to store #define NUM_FPS_SAMPLES (16) // Number of samples to store
static double fps_samples[NUM_FPS_SAMPLES]; static double total_frame_time = 0.0;
static double updateElapsed = 0.0; static int frame_index;
#endif #endif
static boolean fps_init = false; static boolean fps_init = false;
@ -558,34 +558,12 @@ void SCR_CalculateFPS(void)
fps_enter = fps_finish; fps_enter = fps_finish;
#ifdef USE_FPS_SAMPLES #ifdef USE_FPS_SAMPLES
updateElapsed += frameElapsed; total_frame_time += frameElapsed;
if (frame_index++ >= NUM_FPS_SAMPLES || total_frame_time >= MAX_FRAME_TIME)
if (updateElapsed >= FPS_SAMPLE_RATE)
{ {
static int sampleIndex = 0; averageFPS = 1.0 / (total_frame_time / frame_index);
int i; total_frame_time = 0.0;
frame_index = 0;
fps_samples[sampleIndex] = frameElapsed;
sampleIndex++;
if (sampleIndex >= NUM_FPS_SAMPLES)
sampleIndex = 0;
averageFPS = 0.0;
for (i = 0; i < NUM_FPS_SAMPLES; i++)
{
averageFPS += fps_samples[i];
}
if (averageFPS > 0.0)
{
averageFPS = 1.0 / (averageFPS / NUM_FPS_SAMPLES);
}
}
while (updateElapsed >= FPS_SAMPLE_RATE)
{
updateElapsed -= FPS_SAMPLE_RATE;
} }
#else #else
// Direct, unsampled counter. // Direct, unsampled counter.