What is draw calls and how to reduce them?

Only objects using the same material can be batched together.



Things to keep in mind:

You should have the total number of materials as low as possible. This will make it easier for Unity to batch objects.

Check the size of the textures./It depends what your target platform is. check out the list.

Try to keep under 8k tris for mobile devices.

Maintain 20 to 30 draw calls.

Use compressed texture formats when possible, otherwise prefer 16bit textures over 32bit.

Set non movable object to static batching.











For movable objects like car, enemies etc. in order to optimizing the overall performance of game characters is dynamic batching











Audio





Sometimes you thing everything is perfect but what the hell is making performance trouble :(. oh yes this is your audio. If you have poor or bad quality audio files you are doing wrong.





As Unity say:





"As with Meshes or Textures, the workflow for Audio File assets is designed to be smooth and trouble free."

Audio can be

or

. Unity supports most common formats.





Supported Formats and compression





Format Compressed as (Mac/PC) Compressed as (Mobile) MPEG(1/2/3) Ogg Vorbis MP3 Ogg Vorbis Ogg Vorbis MP3 WAV Ogg Vorbis MP3 AIFF Ogg Vorbis MP3 MOD - - IT - - S3M - - XM

Last words



You must remember the fact that different mobile devices have You must remember the fact that different mobile devices have different screen sizes, resolutions and aspect ratios . and yes you want your game to run all mobile devices for this check it out here

Good performance is critical specially for mobile devices.To give you some important techniques and info about making better performance we made this guide.First start it with draw call.Draw call is a material in an object drawn to screen/gameplay. for example an object with 1 material = 1 draw call and an object with 9 materials = 9 draw calls, camera, lights, shadows, sky and so onTo reduce draw calls Unity can easily combine many objects at runtime plus draws them along with a single draw call. This process is called “ batching ”. The more objects Unity can batch with each other, the better rendering performance you can get.Below is an example of batching. A scene with lots of objects having only 3 draw calls.Optimizing Mobile Games in Unity is not yet easy the next thing is Audio.NativeCompressed