ShaderLab command: ZClip

Sets the GPU’s depth clip mode, which determines how the GPU handles fragments that are outside of the near and far planes.

Setting the GPU’s depth clip mode to clamp can be useful for stencil shadow renderingThe process of drawing graphics to the screen (or to a render texture). By default, the main camera in Unity renders its view to the screen. More info
See in Glossary; it means that there is no need for special case handling when the geometry goes beyond the far plane, which results in fewer rendering operations. However, it can result in incorrect Z ordering.

Render pipeline compatibility

Feature name	Built-in Render Pipeline	Universal Render Pipeline (URP)	High Definition Render Pipeline (HDRP)	Custom SRP
ZClip	Yes	Yes	Yes	Yes

Usage

This command makes a change to the render state. Use it in a Pass block to set the render state for that Pass, or use it in a SubShader block to set the render state for all Passes in that SubShader.

Signature	Example syntax	Function
ZClip [enabled]	ZClip True	Sets the depth clip mode.

Valid parameter values

Parameter	Value	Function
enabled	True	Sets the depth clip mode to clip. This is the default setting.
	False	Sets the depth clip mode to clamp. Fragments closer than the near plane are at the near plane exactly, and fragments further away than the far plane are at the far plane exactly.

Examples

This example code demonstrates the syntax for using this command in a Pass block.

Shader "Examples/CommandExample"
{
    SubShader
    {
         // The rest of the code that defines the SubShader goes here.

        Pass
        {    
              // Sets the GPU's depth clip mode to clamp for this Pass
              // You would typically do this if you are rendering stencil shadows
              ZClip False
            
              // The rest of the code that defines the Pass goes here.
        }
    }
}

This example code demonstrates the syntax for using this command in a SubShader block.

Shader "Examples/CommandExample"
{
    SubShader
    {
         // Sets the GPU's depth clip mode to clamp for this SubShader
         // You would typically do this if you are rendering stencil shadows
         ZClip False

         // The rest of the code that defines the SubShader goes here.        

        Pass
        {    
              // The rest of the code that defines the Pass goes here.
        }
    }
}

ShaderLab command: GrabPass

ShaderLab command: ZTest