How to always render one object on top?

While using URP, I have 1 object that I want to always render on top of everything else. I'm using the default URP lit shader. Is there an option I can pass to the shader to set ztest to always?

 

Although you set material/shader's

ZTest

to

Always

, it just only on the top of all objects whose

ZTest

is not set to

Always

or

Great

etc.

First of all, UIs are excluded.

Then, there are some choices:
1. Set material to a large render queue, maybe

Overlay

which value is 4000, and set

ZTest

to

Always

. Now, if you did not add any render feature, this material should be on the top of all scene objects.
All

RenderQueue

s you can choose:

Code (CSharp):

1. public enum RenderQueue
2. {
3.     Background = 1000,
4.     Geometry = 2000,
5.     AlphaTest = 2450, // we want it to be in the end of geometry queue
6.     GeometryLast = 2500, // last queue that is considered "opaque" by Unity
7.     Transparent = 3000,
8.     Overlay = 4000,
9. }

2. (More recommend) Add a render feature, with a event large enough, like

Before RenderingPostProcessing

(which means do rendering just before post-processing), and override its

Depth

option with

Write Depth

unchecked and

Depth Test

is

Always

.

Finally it will like

(Don't forget to select your appropriate

Layer Mask

)

All

Event

s you can choose:

Code (CSharp):

1. public enum RenderPassEvent
2. {
3.     BeforeRendering = 0,
4.     BeforeRenderingShadows = 50,
5.     AfterRenderingShadows = 100,
6.     BeforeRenderingPrepasses = 150,
7.     AfterRenderingPrePasses = 200,
8.     BeforeRenderingOpaques = 250,
9.     AfterRenderingOpaques = 300,
10.     BeforeRenderingSkybox = 350,
11.     AfterRenderingSkybox = 400,
12.     BeforeRenderingTransparents = 450,
13.     AfterRenderingTransparents = 500,
14.     BeforeRenderingPostProcessing = 550,
15.     AfterRenderingPostProcessing = 600,
16.     AfterRendering = 1000,
17. }

 

Setting the render queue of the material to 4000 via script seemed to work perfect for me. Thanks!