Draw Call and FPS

         Performance is the crucial thing while you are dealing with game development for hand held devices! Before going optimized and performance oriented game development, one should understand key terms for measuring device performance. The major unit(yes we can say Unit) for device performance is FPS and Draw Call. 

FPS:

         FPS is Frame Per Second, time taken by device CPU to complete one frame. Human eye can see about 30 framers per second. So for smoother game play generally it is set to 60 for all Android, iOS and other mobile platforms so that graphics and all visuals are visible in high quality. So as a game developer one should try to achieve 60 FPS for game.

Draw Call:

         Draw Call is another unit that is concerned with device GPU(Graphics Processing Unit) directly. They are generated each time the CPU has to send data to the GPU for processing. Draw call can be stated as no of calls that GPU need to made to render an image/texture or mesh. The higher draw call the higher GPU call is made which results in higher power consumption. Higher draw call might also reduce FPS but this is not compulsory.