maybe someone could help me with an alpha channel problem (sorry if thit topic is already solved in another thread, link appreciated):
I created a scene with an obj, 2 lights and a studio-area (sphere, flat surface, e.g. as studio background). To render the scene I use an alpha tag in the Corona Multipass settings.
When i render everything without the studio-area, everything works well. I get a perfect alpha channel in the resulting psd-files.
The problem occurs, when i switch on the studio background. The alpha channel is white due to the fact that corona combines the obj and the studio. How can i select only the obj for the alpha tag in the multipass settings? What am I doing wrong? Any ideas?
Looks like there is an issue here indeed. Even when setting “alpha mode” in advanced material settings to “always black” it is still rendering as white. Moving to bugs.
ok thought that the stream tells enough. When I create scene, for example a background studio wall and an object, I cant geht an alpha pass out of the render.
Ich checked the alpha mask in the multipass settings. but the final mask is completly white. So, how can I get the studio wall ignored by the engine?
Can I assign a ID for the wall or the object?
