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Add performance metrics to KMS driver.

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This commit is contained in:
Themaister 2012-09-18 20:36:16 +02:00
parent 3c9e28e613
commit f6af4fc122
1 changed files with 43 additions and 3 deletions
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44
gfx/context/drm_egl_ctx.c
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@ -101,14 +101,44 @@ void gfx_ctx_check_window(bool *quit,
*quit = g_quit; *quit = g_quit;
} }
static void page_flip_handler(int fd, unsigned int frame, unsigned int sec, unsigned int usec, void *data) static unsigned first_page_flip;
static unsigned last_page_flip;
static uint64_t first_usec;
static uint64_t last_usec;
static unsigned missed_vblanks;
static unsigned hit_vblanks;
static void page_flip_handler(int fd, unsigned frame, unsigned sec, unsigned usec, void *data)
{ {
(void)fd; (void)fd;
(void)frame; (void)frame;
(void)sec; (void)sec;
(void)usec; (void)usec;
//fprintf(stderr, "Frame: %u, Time (ms). %.3f\n", frame, sec * 1000.0 + usec / 1000.0); uint64_t current_usec = (uint64_t)sec * 1000000 + usec;
if (!first_page_flip)
{
first_page_flip = frame;
first_usec = current_usec;
}
if (last_page_flip)
{
unsigned missed = frame - last_page_flip - 1;
if (!missed)
hit_vblanks++;
else
{
RARCH_LOG("[KMS/EGL]: Missed %u VBlank(s) (Frame: %u).\n",
missed, frame - first_page_flip);
missed_vblanks += missed;
}
}
last_page_flip = frame;
last_usec = current_usec;
bool *waiting = (bool*)data; bool *waiting = (bool*)data;
*waiting = false; *waiting = false;
@ -516,6 +546,16 @@ void gfx_ctx_destroy(void)
drmClose(g_drm_fd); drmClose(g_drm_fd);
g_drm_fd = -1; g_drm_fd = -1;
unsigned frames = last_page_flip - first_page_flip;
if (frames)
{
uint64_t usec = last_usec - first_usec;
RARCH_WARN("[KMS/EGL]: Estimated monitor FPS: %.5f Hz\n", 1000000.0 * frames / usec);
}
RARCH_WARN("[KMS/EGL]: Performance stats: Missed VBlanks: %u, Perfect VBlanks: %u\n",
missed_vblanks, hit_vblanks);
// Reinitialization fails for now ... // Reinitialization fails for now ...
//g_inited = false; //g_inited = false;
} }