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Question
V-Ray Matte/Shadow material problems with 3D studio Max
Dear Experts
I'm having real trouble with the Matte/Shadow material in V-ray(with 3D studio Max). I'm using the VRayMtlWrapper to create a Matte/Shadow material on the plane below a 3D studio Max model. The image is to be composited with video footage later. Of course I do not want the plane to show in the RGB channels as it's only a surface for the shadow. However it appears that most settings give me a translucent plane in the render. Only when the Alpha contribution = 0.0 does the plane disappear unfortunately so does the shadow! How can I make only the shadow part of the RGB channel?
Please find attached VrayMtkWrapper1.jpg which are the settings that result in VrayMtlWrapperAlpha1.jpg and VrayMtlWrapper2.jpg which are the settings that result in VrayMtlWrapperAlpha2.jpg
Please can you help. I greatly appreciate any thoughts on the matter.
- VrayMtlWrapperAlpha1.jpg
- 231 KB
Resulting image of Alpha contribution 0.0
- VrayMtlWrapper1.JPG
- 285 KB
Matte/Shadow material settings (Alpha contribution 0.0)
- VrayMtlWrapperAlpha2.jpg
- 217 KB
Resulting image of Alpha contribution -1.0
- VrayMtlWrapper2.JPG
- 286 KB
Matte/Shadow material settings (Alpha contribution -1.0)
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by: jusnoePosted on 2009-07-03 at 13:48:16ID: 24774336
I'm certainly surprised that I received no help on this issue! I've decided to render the floor as a grey material and use a luma key in video post to acheive the same trick. I'm relly dissappointed.