src/bz/debug/perfgraph.c

   1 #include <bz/debug/perfgraph_internal.h>
   2
   3 #include <bz/types/common.h>
   4 #include <bz/gfx/gfx.h>
   5
   6 extern void resetSystemTimer(void);
   7 extern float getSystemTimer(void);
   8
   9 struct BZPerfTimer {
  10         const char *identifier;
  11         float startTime;
  12         float elapsedTime;
  13 };
  14 typedef struct BZPerfTimer BZPerfTimer;
  15
  16 BZPerfTimer perfTimers[32];
  17
  18 void bzPerfReset() {
  19         resetSystemTimer();
  20
  21         for (size_t i = 0; i < 32; ++i) { // FIXME
  22                 perfTimers[i].identifier = NULL;
  23                 perfTimers[i].elapsedTime = 0.0f;
  24         }
  25 }
  26
  27 static BZPerfTimer *bzPerfTimerFind(const char *identifier) {
  28         BZPerfTimer *timer = NULL;
  29
  30         for (size_t i = 0; i < 32; ++i) {
  31                 if (perfTimers[i].identifier == NULL && timer == NULL) {
  32                         timer = &perfTimers[i];
  33                 } else if (perfTimers[i].identifier == identifier) {
  34                         timer = &perfTimers[i];
  35                         break;
  36                 }
  37         }
  38
  39         bzAssert(timer != NULL);
  40         return timer;
  41 }
  42
  43 void _bzPerfTimerStart(const char *identifier) {
  44         BZPerfTimer *timer = bzPerfTimerFind(identifier);
  45         timer->identifier = identifier;
  46         timer->startTime = getSystemTimer();
  47 }
  48
  49 void _bzPerfTimerStop(const char *identifier) {
  50         float endTime = getSystemTimer();
  51         BZPerfTimer *timer = bzPerfTimerFind(identifier);
  52         timer->elapsedTime += endTime - timer->startTime;
  53 }
  54
  55 void _bzPerfTimerOutput() {
  56         for (size_t i = 0; i < 32; ++i) {
  57                 if (perfTimers[i].identifier != NULL) {
  58                         bzLog("Timer '%s': %fs", perfTimers[i].identifier, perfTimers[i].elapsedTime);
  59                 }
  60         }
  61 }
  62
  63 void _bzPerfTimerDraw() {
  64         int y = 10;
  65         int width = 50;
  66         for (size_t i = 0; i < 32; ++i) {
  67                 if (perfTimers[i].identifier != NULL) {
  68                         bzRectFill(10, y, 10 + width, y+3, 5);
  69                         float t = perfTimers[i].elapsedTime / (1 / 30.0f);
  70                         bzRectFill(10, y, 10 + width * t, y + 3, 8);
  71                         bzPrint(10 + width, y, 7, perfTimers[i].identifier);
  72                         y += 5;
  73                 }
  74         }
  75 }