Question Custom pass to write to G-buffer (diffuse color) using a full-screen shader?

Hi,

I want to write to the diffuse color before the lighting calculations are done and the final frame is rendered.
I am retrieving the diffuse color texture as a RenderTexture using a CustomPass:

Code (CSharp):

1. protected override void Execute(CustomPassContext ctx) {
2.        
3.        
4.         // Get the diffuse color texture from the camera GBuffer
5.         RenderTexture diffuseTexture = ctx.hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.ColorBufferMipChain);
6.  
7.  
8.         StylizeImage(diffuseTexture);

I use Unity's Barracuda to manipulate the diffuse texture. Once I do this, I want to write back to the diffuse colour. Is this possible?
@antoinel_unity I have looked at your Custom pass examples, and saw how to write to the normal buffer but I couldn't make it work for the Camera Color Buffer.
Any help/advice would be very appreciated.
Thank you.