RenderToTexture + Cubemap

Unity Engine
1

Hello, I’d like to have a rotating object over a bitmap background. I’ve used the renderToTexture and everything works fine until I apply a specular cubemap material to the object. After that the object looks semi-transparent when I use the GUI.DrawTexture.

I read it’s a RTT blending problem so I used the “RTTPost” Shader suggested here: http://forum.unity3d.com/viewtopic.php?t=31287&sid=8875fa8795af5fa982986ed077c76513 but it make all the background full white.

I need a shader that sounds like: for every pixel if alpha >0 then alpha = 1. Someone can help me with this?

Thanks

PS: Any other suggestion is appreciated…

2

I think the best approach would be to use a modified version of the specular cubemap shader that writes alpha the way you want. You can find the source for the built-in shaders at the top of the forum.