Hi again, Sorry , I just realized one more thing,if the problem you are having is due to the reflection rectangles affect on the gi calculation, and that is what is causing the bright spot on the wall then isolate that from the gi process, make a sperate level for all the things you want in the gi processing and another for the rectangle and then only place the gi shader in the appropriate level. This ability to move things between levels and applying shaders etc to only certain levels is a very powerful feature of realsoft.
Rgds, Andrew -----Original Message----- From: Andrew Berge [mailto:aberge@,.com.au] Sent: Thursday, 6 August 2009 12:52 PM To: '[email protected]' Subject: RE: Teacup lighting Hi, I can see a couple of things to improve, why are you using a paper backdrop ? This material is actually a very complex shader that transmits light and shadow from the opposite side of the object, If you just want a plain background just make a simple shader with only a colour operator or something, this will also speed your render quite allot. The answer to your rectangle object is to make that rectangle camera invisible, this option is in the objects properties tab, it will stop the rectangle being visible directly to the camera but it will be visible in reflections and refractions etc. The list only allows quite small attachments to emails something like 10-15k I think, that is why your email failed. Hope this is helpful, Andrew -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Henry Tjernlund Sent: Thursday, 6 August 2009 5:02 AM To: [email protected] Subject: Fwd: Teacup lighting Let me try sending this again without attaching the screen shot. Maybe that's why my posts are not showing up. ---------- Forwarded message ---------- From: Henry Tjernlund <[email protected]> Date: Mon, 3 Aug 2009 07:16:04 -0400 Subject: Teacup lighting To: [email protected] I worked through part of the part of the user manual on NURBS. I go inspired to make a tea cup, which worked well, BTW. Then I wanted to render it in global lighting. Attached is a screen capture of the render in RS 5. I added a background wall with the "Paper" material and changed the color to a light lavender. When I render I get a bright hot-spot. It doesn't show up until the second pass of the processing (which I assume is the GI post processing.) Lighting is provided by a rectangle make into a Special-Light. But that doesn't seem to be the cause of the hot-spot. The hot spot seems to be coming from another rectangle I am using to get a window-like reflection on the Porcelain material of the cups. That rectangle has the "Unshaded" material applied to it, which looks self-luminous. If I had that second rectangle, then the hot-spot goes away, but so do the nice and interesting reflections in the cups. I have thought of several ways to try and fix this, but each takes a while to do test renders. (Just this screen render took almost 3 hours.) So instead of spending days trying a multitude of tests, I am hoping that the experts here can suggest just the ideal fix. -- -- Henry Tjernlund http://www.renderosity.com/mod/gallery/browse.php?username=henrytj http://www.modelmayhem.com/HenryTjernlund http://imdb.com/name/nm2519729/ http://www.myspace.com/henrytj http://henrytj.deviantart.com/ -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Henry Tjernlund Sent: Thursday, 6 August 2009 5:02 AM To: [email protected] Subject: Fwd: Teacup lighting Let me try sending this again without attaching the screen shot. Maybe that's why my posts are not showing up. ---------- Forwarded message ---------- From: Henry Tjernlund <[email protected]> Date: Mon, 3 Aug 2009 07:16:04 -0400 Subject: Teacup lighting To: [email protected] I worked through part of the part of the user manual on NURBS. I go inspired to make a tea cup, which worked well, BTW. Then I wanted to render it in global lighting. Attached is a screen capture of the render in RS 5. I added a background wall with the "Paper" material and changed the color to a light lavender. When I render I get a bright hot-spot. It doesn't show up until the second pass of the processing (which I assume is the GI post processing.) Lighting is provided by a rectangle make into a Special-Light. But that doesn't seem to be the cause of the hot-spot. The hot spot seems to be coming from another rectangle I am using to get a window-like reflection on the Porcelain material of the cups. That rectangle has the "Unshaded" material applied to it, which looks self-luminous. If I had that second rectangle, then the hot-spot goes away, but so do the nice and interesting reflections in the cups. I have thought of several ways to try and fix this, but each takes a while to do test renders. (Just this screen render took almost 3 hours.) So instead of spending days trying a multitude of tests, I am hoping that the experts here can suggest just the ideal fix. -- -- Henry Tjernlund http://www.renderosity.com/mod/gallery/browse.php?username=henrytj http://www.modelmayhem.com/HenryTjernlund http://imdb.com/name/nm2519729/ http://www.myspace.com/henrytj http://henrytj.deviantart.com/
