After stacking VRay materials, there is a display issue

V-Ray for Cinema 4D V-Ray for Cinema 4D :: Issues
1

4O6Z_@7Y}RF75I3]T[NDRDP
4O6Z_@7Y}RF75I3]T[NDRDP1748×823 182 KB

AAA.rar (106.9 KB)
Just like in the picture, you can see the checkerboard effect. I uploaded the problem project

2

The render result looks okay to me and the viewport preview looks wrong. Not completely sure at the moment why the viewport preview behaves like that, but we should be giving Cinema4D correct alpha values. Node material previews are display correctly.

3

Actually, there is a problem with the rendering. Didn’t you notice that the purple part reveals the red chessboard pattern below

4

Hey @123456_1 - the issue seems to be from the tiles shader you are using for the opacity of the material. Since it is not natively supported by V-Ray, it gets automatically baked and it seems the color it produces is not pure white.

As an example, if you change it with a different shader (supported natively by V-Ray) or use a file texture, you will see that the issue is no longer present:

image
image1412×1023 116 KB

AAA-gradient.zip (71.1 KB)

5

Thank you for your answer. The problem has been resolved