In Arnold, it's done in shader level AFAIK: Make the ground as a shadowCatcher by matte properties in the VrayMtlWrapper. Option 2: assign VrayMtlWrapper to ground and plug the VrayLightMtl in as the Base Material. Option 1: assign VrayLightMtl to the ground (direct illum disabled), make the ground a shadowCatcher through VrayObjectProperties. The reason I use VrayLithtMtl is trying to return original pixel value of assigned texture (as if using Maya's surface shader), so direct illumination has been disabled. I'll check with the devs if we can add an option to choose another texture to be returned for camera rays and this may solve to an extent this problem in future versions.Īs for the lightMtl - it can be a matte if its "direct illumination" is disabled, but if it's a matte, it won't be a lightMtl, i.e. He holds a History degree from Queens’ College, Cambridge, enjoys sailing, fishing and cricket and is married with three children.Mattes in V-Ray always return the background color. He was also head of the British Rig Owners Association (BROA), representing owners with marine offshore units operating in the North Sea.
Robert has also worked for the UK Chamber of Shipping as Head of its Technical Division, where he recalibrated the importance of environmental issues and developed the Chamber policy on GHG emissions. He is responsible for directing all activities and initiatives of the association, including relationships with the IMO, Flag Administrations, the EU, as well as other industry associations and media relations.īefore joining IACS, Robert served as Secretary General of the Cruise Lines International Association (CLIA) in Brussels, where he represented the cruise industry towards the institutions of the European Union on all policy/regulatory issues, and was responsible for transitioning the traditional passenger ship representation model into the European Chapter of the global CLIA organisation. Robert Ashdown has been Secretary General of the International Association of Classification Societies (IACS) since May 2015.
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