1. Misaki_eKU

   

   Joined:

   May 3, 2018

   Posts:

   51

   Is it possible to sample the volumetric fog density in fullscreen shader in HDRP?

    

   Misaki_eKU, Jul 7, 2023

   #1

2. Remy_Unity

   

   Unity Technologies

   Joined:

   Oct 3, 2017

   Posts:

   629

   I am not 100% sure it will be possible, it depend when in the render loop you are drawing the fullscreen shader, if it is a post process the volumetric fog VBuffer might already be unbound at this stage.
   
   You can see how fog evaluation is done here.
   
   You will need to include Packages/com.unity.render-pipelines.high-definition/Runtime/Lighting/VolumetricLighting/VBuffer.hlsl in your shader and call the

   SampleVBuffer

   function.

    

   Remy_Unity, Jul 12, 2023

   #2

3. Misaki_eKU

   

   Joined:

   May 3, 2018

   Posts:

   51

   Thanks. I will try it.

    

   Misaki_eKU, Jul 13, 2023

   #3

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