How to change background color of the pytorch3d rendering results?

[yejr0229]

I want to change the background color of the rendering image form image1 to image2:

and I try to modify th parameters here:

But the results looks wrong: How to do it correctly?

[bottler]

You need to find in the code where you construct a BlendParams instance, and set the value you want there. It may be explicit, or it may be defaulted somewhere. Can you paste the code where you call the renderer?

[yejr0229]

and the BlendParams:

[bottler]

To avoid modifying pytorch3d but change the background color, you can change the blend_params=BlendParams() in your code to blend_params=BlendParams(background_color=(0.4,0.5,0.6)) or whatever.

EDIT: This isn't the real question.

[bottler]

The image that looks "wrong" seems to have the background color applied to the foreground. I wonder if there's a problem with the znear or zfar values: you want the object to be between them. You can add znear and zfar as float inputs to the shader, or use ones in the camera.