Creating cornice backlight in V-Ray

31 May, 2011 Denis
31 May, 2011 # Re: Creating cornice backlight in V-Ray
Hello. I would be grateful for help in resolving this issue: it is necessary to create a highlight in the gypsum board construction to a wall whose shape is curved and zakarniznuyu backlight. I created it in two ways (1 - via VRayLight 2- appointing VRayLightMtl on selected polygons) and in both cases the backlight to be seen, even with a large value of the parameter multiplier (300). In the scene using a bunch VRaySun + VRaySky + VRayLight. I use VRay physical camera. Outside, one VRayLight (all windows) in the portal mode. Settings rough rendering VRay (1.5 SP4) Here is an example of what I get

1 Jun, 2011 RenderStuff (Staff Author)
1 Jun, 2011 # Re: Creating cornice backlight in V-Ray
Hello! 1 - How to "tune" the VRayPhysicalCamera and adjust the brightness rendering , see the corresponding article. 2 - How are the correct settings the Color mapping the VRay , as you will read in the section of the lesson on the 3d visualizations . Rough tuning nothing to do with. 3 - When you implement the recommendations of paragraph 1 and 2, then simply turn off and unplug VRaySun in Environment VRaySky. Then do a test render and check whether it is light you have because of the eaves. If so, find the right balance between the brightness and the backlight zakarniznoy light from the window (it is likely you have a much brighter), if not, then you either greatly deepened "in the body" drywall lights, or select the wrong sites for self-luminous mat. If so, just to correct these errors. Speaking which option better, no doubt, for visual realism best course option with the installation of light sources. But see for yourself -%B8 render time, and complexity of the installation is not happy with 🙂 Option VRayLightMtl in most cases preferable, despite the fact that he is only at the base of the cornice illuminates part of the wall, which must fall a beautiful light gradient zakarniznoy backlight. But during its calculation, speed and ease of configuration in most cases it pays off. There is a third option, the most rational. It VRayLightMtl use in direct light mode, with activated Direct illumination. This will allow direct VRayLightMtl radiate light in the same way as it does the VRayLight source of direct light, giving a nice smooth light gradient. This is easy to configure exactly the same as when setting VRayLightMtl mode Indirect Illumination (the GI) . All recent versions of Vray renderer, support this VRayLightMtl mode😉

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