How to make a 2D sprite always render in front of the 3D gameobjects

Question

For a game I am making, I need 2D sprites to always render in front of the other 3D GameObjects in the scene (not the UI).

I have tried using sorting layers, but they don't seem to work in this case. It may be because I'm working with 3D objects, and I could not a way to set a sorting layer for a 3D GameObject.

Normal layers aren't working either, no matter what I set it to, even UI, the sprites will still render based on their distance from the camera.

Answer 1

Answer by BorpaBoatski · Jun 18, 2021 at 01:02 AM

What I did to achieve that was to make a copy of the Default Sprite shader code and added a ZTest Always to the SubShader.

You can download a ZIP of built in shaders at the Download Archive.

alt text

The DefaultSprite shader is located in the DefaultResourcesExtra folder. Then you'll want to add the ZTest Always line which would now look something like this.

 Cull Off
 Lighting Off
 ZWrite Off
 ZTest Always
 Blend One OneMinusSrcAlpha

Now apply that new shader onto the sprites you want to always render in front of 3D objects

capture.jpg (37.2 kB)

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amyellow · Jun 18, 2021 at 06:49 PM 0

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Thank you this is a great solution.

However for me, I came up with a different idea that will make the UI of my game better and does not need this.

I'm sure many other people will use this though.

How to make a 2D sprite always render in front of the 3D gameobjects

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