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fixup! Fix inaccuracies in FPS counter

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Gustaf Alhäll 2023-07-15 12:51:07 +02:00
parent 576262f6c5
commit e3824b9f1b
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GPG key ID: 6C1F67D690CDEDFD
1 changed files with 11 additions and 11 deletions
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22
src/screen.c
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@ -462,10 +462,11 @@ double averageFPS = 0.0f;
#define USE_FPS_SAMPLES
#ifdef USE_FPS_SAMPLES
#define NUM_FPS_SAMPLES (32) // Number of samples to store
#define MAX_FRAME_TIME 0.05
#define NUM_FPS_SAMPLES (16) // Number of samples to store
static double fps_samples[NUM_FPS_SAMPLES];
static int fps_index;
static double total_frame_time = 0.0;
static int frame_index;
#endif
static boolean fps_init = false;
@ -474,7 +475,6 @@ static precise_t fps_enter = 0;
void SCR_CalculateFPS(void)
{
precise_t fps_finish = 0;
int i;
double frameElapsed = 0.0;
@ -489,13 +489,13 @@ void SCR_CalculateFPS(void)
fps_enter = fps_finish;
#ifdef USE_FPS_SAMPLES
fps_samples[fps_index] = frameElapsed / NUM_FPS_SAMPLES;
fps_index = (fps_index + 1) % NUM_FPS_SAMPLES;
averageFPS = 0.0;
for (i = 0; i < NUM_FPS_SAMPLES; i++)
averageFPS += fps_samples[i];
averageFPS = 1.0 / averageFPS;
total_frame_time += frameElapsed;
if (frame_index++ >= NUM_FPS_SAMPLES || total_frame_time >= MAX_FRAME_TIME)
{
averageFPS = 1.0 / (total_frame_time / frame_index);
total_frame_time = 0.0;
frame_index = 0;
}
#else
// Direct, unsampled counter.
averageFPS = 1.0 / frameElapsed;