Third Party

V-Ray™ and 3ds-Max™ to MDL Features and Limitations

3ds-Max Connect supports the conversion of native V-Ray to MDL materials on export. Where possible we support as many of the native V-Ray parameters as we can as well as some common 3dsMax nodes. However in some cases it’s not always achievable. The following table shows the currently support list of shaders along with any limitations in parameter conversion.

Note

Vray 5 or 6 is required to utilize the Vray export features of the 3dsMax Omniverse Connector.

Status
Renderer dependent
In-progress
Not implemented

V-Ray

Shader	Status	Limitations and Unsupported Parameters
VrayMtl		Reflection - Fresnel IOR unlocked - Max depth - Reflection on back side - Dim distance - Dim falloff - Affect channels Refraction - Abbe Number - Max depth - Affected channels - Affected shadows Fog - Fog Color - Fog multiplier - Fog bias Translucency - Translucency - Scatter coeff - Fwd/Bck - Thickness - Back-side color - Light multiplier Self-Illumination - GI - Compensate camera exposure Sheen - Sheen color - Sheen glossiness BRDF - Type: Phong, Blinn, Ward, GGX - Use glossiness / Use roughness - GTR tail falloff - Anisotropy - Rotation - Local axis - Map channel Options - Trace reflections - Trace refractions - Cutoff - Env. Priority - Double-sided - Use irradiance map - Fog system unit scaling - Effect ID - Glossy Fresnel - Preserve energy - Opacity mode
VrayFastSSS		Specular Layer Parameters - Trace reflections - Reflection depth Options - Single Scatter - Refraction depth - Scatter GI - Cutoff threshold
VrayNormalMap		Basic Parameters - Map Channel - Map Rotation
VrayLightMtl		Basic Parameters - Compensate camera exposure - Displace Direct Illumination - On - Cutoff
VrayBlendMtl
Vray2SidedMtl		Basic Parameters - Multiply by front diffuse - Force Single sided sub-mtl
VrayDirt
VrayEdgesTex		Color - Hidden edges - Show subtriangles Width - World width - Pixel width Corners - Convex only - Concave only Width/Radius Multiplier - Multiplier
Vray Color		Color Primaries - sRGB - ACEScg
Vray Bitmap		Mapping Mapping Type - Angular - Cubic - Spherical - Mirrored Ball - Mapping source Ground Projection Processing - Render mult. - Filter mult. - Interpolation - Filtering Crop/Place - Place UDIM/UVTILE Preview in material Editor - RGB Primaries Coordinates - Angle U/V/W - UV/VW/WU - Blur - Blur offset Texture mapping - Mapping: Vertex map channel - Mapping Planar from Object XYZ - Mapping Planar from World XYZ - Use Real-World Scale Environment mapping - Mapping: Spherical env. - Mapping: Cylindrical env. - Mapping: Shrink wrap env. - Mapping: screen
VRayColor2Bump		- Height: - Bump Delta Scale:
VRayBump2Normal		- Map Channel: - Mode: Only Tangent Space Supported
VRayCarpaintMtl		- Flake Layer: MDL uses different technique to generate Flakes, therefore these parameters are not used in MDL. - Flake Layer: Flake Filtering - Flake Layer: Flake Map Size

3ds-Max

Shader		Limitations and Unsupported Parameters
Noise		Noise Type - Fractal Coordinates Source - Vertex Color Channel - Blur - Blur Offset
Dent		Coordinates Source - Vertex Color Channel - Blur - Blur Offset
Mix
Color Correction		Lightness Advanced - RGB Gain - RGB Pivot - RGB Lift / Offset
Bitmap Texture		Coordinates - Angle U/V/W - UV/VW/WU - Blur - Blur offset Texture Mapping - Mapping: Vertex map channel - Mapping: Planar from Object XYZ - Mapping: Planar from World XYZ - Use Real-World Scale Environment mapping - Mapping: Spherical env. - Mapping: Cylindrical env. - Mapping: Shrink wrap env. - Mapping: screen Noise - On - Amount - Level - Size - Animate - Phase Bitmap Parameters Filtering - Pyramidal - Summed Area - None Mono Channel Output - RGB Intensity - Alpha RGB Channel Output - RGB - Alpha as Grey Cropping/Placement - Apply - U/V/W/H Alpha Source - Image Alpha - RGB Intensity - None (opaque) - Premultiplied alpha Time - Start Frame - Playback Rate - Sync Frames to Particle Age End Condition - Loop - Ping Pong - Hold Output - Output amount - Clamp - RGB offset - Alpha from RGB Intensity - RGB level - Enable Color Map - Bump Amount
Falloff		Falloff Parameters - Front / Side color/maps Falloff Type - Perpendicular/Parallel - Towards/Away - Fresnel (F) - F: Override Material IOR - F: IOR - Shadow/Light - Distance Blend (DB) - DB: Near Distance - DB: Far Distance - DB: Extrapolated Falloff Direction - Viewing Direction (cam z) - Camera X/Y Axis - Object - Local X/Y/Z Axis - World X/Y/Z Axis
Composite
Blend
Top/Bottom		Parameters - Position - Coordinates
Gradient Ramp		Coordinates - Angle U/V/W - UV/VW/WU - Blur - Blur offset Texture mapping - Mapping: Vertex map channel - Mapping: Planar from Object XYZ - Mapping: Planar from World XYZ - Use Real-World Scale Environment mapping - Mapping: Spherical env. - Mapping: Cylindrical env. - Mapping: Shrink wrap env. - Mapping: screen Noise - On - Amount - Level - Size - Animate - Phase Output - Output amount - Clamp - RGB offset - Alpha from RGB Intensity - RGB level - Enable Color Map - Bump Amount
Standard Output		- Output amount, fixed at 1.0 - Enable color map

V-Ray™ Light Support

Lights are mapped to USD Lights on export.

Light Type	USD Light Type
Vray Light (Plane)	- USD Rect Light Length and Width are interchanged with USD Length and Width. Max will modify these on import/export

Note

V-Ray and the V-Ray logo, Phoenix FD and the Phoenix FD logo are registered trademarks of Chaos Software Ltd. in Bulgaria and/or other countries. Autodesk, the Autodesk logo, 3ds Max are registered trademarks or trademarks of Autodesk, Inc., and/or its subsidiaries and/or affiliates in the USA and/or other countries.