Car Paint 2 MTL Coat Bump no output

[sean_krouse1]

Car Paint 2 MTL coat bump color inpt not working, i plugged a normal bump into the base bump color and it works just fine but if i plug the same map into the coat bump theres no result at all, ive tried changing the bump mode but theres still no result

[daniel.kapsazov]

Hello sean_krouse10

Thanks for reaching out!

The V-Ray Normal Bump node is used to convert a bump map into an explicit normal map, which is why plugging it into the Coat Bump slot has no effect by default. If you want to use your bump map with the V-Ray Normal Bump node, you need to change the Coat Bump Type to Normal. See the example below.

If you’re trying to achieve a specific effect and my advice doesn’t fully help, please let me know so I can assist you further.

blender_2025-02-06_18-04-02.pngblender_2025-02-06_18-05-09.png

[sean_krouse1]

Thanks for the reply, after following the instructions in the example my coat bump still has no effect. On the other hand i can plug a B&W Noise into the coat bump with no normal bump and not changing the bump type to explicit normal of just a Vray Mtl and it will still display, could be something wrong with my version as im still running on the day 1 release.

I've resolved this by building a manual flakes shader with two Vray mtl's and a flakes 2 mtl in a blend

Ive included photos below of my scenario

_ Z06 C8 [C__Users_Sean_OneDrive_Desktop_3D Files_Blend & Asset Libraby_Z06 C8.blend] - Blender 4.2.3 LTS 2_6_2025 11_29_29 AM.png V-Ray Frame Buffer - [100.0% of 1920 x 1080] 2_6_2025 11_29_23 AM.png _ Z06 C8 [C__Users_Sean_OneDrive_Desktop_3D Files_Blend & Asset Libraby_Z06 C8.blend] - Blender 4.2.3 LTS 2_6_2025 11_32_22 AM.png V-Ray Frame Buffer - [100.0% of 1920 x 1080] 2_6_2025 11_31_09 AM.png

[daniel.kapsazov]

sean_krouse1
That’s odd. Could you possibly provide the scene from the example so we can check it out?

Also, please make sure that you are using the latest version of V-Ray for Blender, which you can find here: V-Ray for Blender