3ds Max 2023 introduced significant changes to the Color Management system (OCIO), which directly impacts how material libraries appear.
The Trap: If you have enabled OCIO (OpenColorIO) in Max 2023 for ACEScg workflow, legacy V-Ray materials may render darker or with incorrect saturation.
The Solution: The V-Ray 6 Material Library for 2023 auto-detects the rendering color space. When you import a material, V-Ray automatically converts the diffuse textures from sRGB to the scene's working space (e.g., ACEScg) using a color space override in the VRayBitmap node. You can verify this by checking the "Advanced" rollout of the bitmap—you will see Color space: From 3ds Max or a specific override. vray material library for 3ds max 2023
After downloading, V-Ray must know where the library lives: 3ds Max 2023 introduced significant changes to the
Restart 3ds Max 2023. The library should now appear in the Asset Editor’s left panel. Restart 3ds Max 2023
Exercise: create a weathered metal with painted base and chipped paint revealing metal underneath using curvature-based masks.
Ensure you are running V-Ray 5.20.xx or higher (V-Ray 6 recommended). Older versions (V-Ray Next or 4.x) do not include this library.
Exercise: convert a high-poly sculpt to a normal map and apply it to a low-poly object using a library material.