Merging changes from private branch

core/src/mindustry/ClientLauncher.java

@@ -55,6 +55,7 @@ public abstract class ClientLauncher extends ApplicationCore implements Platform
         Log.info("[GL] Version: @", graphics.getGLVersion());
         Log.info("[GL] Max texture size: @", maxTextureSize);
         Log.info("[GL] Using @ context.", gl30 != null ? "OpenGL 3" : "OpenGL 2");
+        if(gl30 == null) Log.warn("[GL] Your device or video drivers do not support OpenGL 3. This will cause performance issues.");
         if(NvGpuInfo.hasMemoryInfo()){
             Log.info("[GL] Total available VRAM: @mb", NvGpuInfo.getMaxMemoryKB()/1024);
         }
@@ -206,6 +207,8 @@ public abstract class ClientLauncher extends ApplicationCore implements Platform
 
     @Override
     public void update(){
+        PerfCounter.update.begin();
+
         int targetfps = Core.settings.getInt("fpscap", 120);
         boolean changed = lastTargetFps != targetfps && lastTargetFps != -1;
         boolean limitFps = targetfps > 0 && targetfps <= 240;
@@ -256,6 +259,8 @@ public abstract class ClientLauncher extends ApplicationCore implements Platform
                 Threads.sleep(toSleep / 1000000, (int)(toSleep % 1000000));
             }
         }
+
+        PerfCounter.update.end();
     }
 
     @Override