i’m new to this forum. First of all, excuse my probably not-so-good english, i’m not a native speaker.
I registered here because i’m seriously stuck. My problem is as follows :
I’m trying to build a command bridge for a star wars starship. I set up a big holoprojector with a spotlight at the bottom to produce a cone of green volumetric light for a nice visual holoprojection-effect. On various command consoles, there are sheets of glass with a texture on them to produce the effect of holographic information on some kind of glass sheet. I set the glass RayTransparent and RayMirrored to provide the illusion of an actual sheet of glass. Everything is working and looking fine, but i want to animate a camera flight through the bridge later on, and the volumetric light of the big holoprojector is not showing through the glass sheets on the command consoles.
I guess this is a compositing problem, maybe because the volumetric light is rendered before the transparency of the glass sheet is rendered. So i tried everything i know with render layers, render passes and composition nodes. Now i am stumped. I have no idea how i can make a sheet of glass with a texture on it WITH the volumetric light visible behind it. Same problem for the sky-background with stars, i don’t want to use a skydome if i must not, so it would be nice to produce a star background just with the star feature of blender.
I am somewhat familiar with setting up composition nodes, render layers and render passes.
To outline my question, i want the following things to work smoothly together :
- A sheet of glass with transparency, a semi-transparent texture on it and reflections of the scene
- A volumetric light behind the sheet of glass that is actually showing BEHIND it.
I included a render of my test scene in this post, one can clearly see the volumetric light not showing up behind the sheet of glass. I also included the .blend of my test scene, so that you can check my settings. The second picture i included is a view of the whole command bridge with the spot light of the big holoprojector and the mountings for the glass sheets highlighted, so that you can imagine an animated camera flight through the bridge and visualize the problem when the glass sheets pass in front of the volumetric light or in front of the main viewscreen (in this case, the stars outside would be invisible too, i guess).
Thank you very much in advance for any advice on how to solve this problem, i’m getting sleepless nights of futile problem solving already
EDIT : I’m using Blender 2.49b
HoloTest2.blend (304 KB)