From 4649c33832ed57be428fea524d5f8812832bf59c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Miloslav=20=C4=8C=C3=AD=C5=BE?= <tastyfish@seznam.cz>
Date: Sat, 1 Jun 2019 19:22:55 +0200
Subject: [PATCH] Add FPS

---
 testSDL.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/testSDL.c b/testSDL.c
index 4e8d1bd..d62c240 100644
--- a/testSDL.c
+++ b/testSDL.c
@@ -6,6 +6,7 @@
 #include <SDL2/SDL.h>
 #include <stdio.h>
 #include <math.h>
+#include <time.h>
 
 //#define S3L_PRESET_HIGHEST_QUALITY
 
@@ -164,6 +165,10 @@ else
 S3L_Transform3D modelTransform;
 S3L_DrawConfig conf;
 
+clock_t nextT;
+
+int fps = 0;
+
 void draw()
 {
   S3L_newFrame();
@@ -181,6 +186,19 @@ void draw()
 
   if (offScreenPixels > 0)
     printf("offscreen pixels: %d\n",offScreenPixels);
+
+  clock_t nowT = clock();
+
+  double timeDiff = ((double) (nowT - nextT)) / CLOCKS_PER_SEC;
+
+  fps++;
+
+  if (timeDiff >= 1.0)
+  {
+    nextT = nowT;
+    printf("FPS: %d\n",fps);
+    fps = 0;
+  }
 }
 
 int main()
@@ -191,6 +209,8 @@ int main()
   SDL_Surface *screenSurface = SDL_GetWindowSurface(window);
   SDL_Event event;
 
+  nextT = clock();
+
   S3L_initCamera(&scene.camera);
 
 //  scene.camera.transform.translation.z = -S3L_FRACTIONS_PER_UNIT * 2;