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First time Unity user. Is is possible to use a movie's alpha channel to control transparency of a texture? Or do I need to use a second grayscale movie that only contains the matte? How CPU/GPU intensive are movie textures -- can many be played simultaneously? Anyone have any movie texture examples I could look at?
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Check this thread out, all you wanna know it's there, in detail: http://answers.unity3d.com/questions/2263/movie-texture-blending
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I believe Unity uses Theora as video format which doesn't support alpha channel. There was a qt plugin for unity, but believe it isn't really kept up-to-date and didn't work under windows and probably won't ever work for web-plugins. It should be possible to make it work using a second movie that has luminance as alpha, of course, you first have to be able to extract the alpha channel in a second movie and second play the streams back perfectly in sync.
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Agreeing with Jaap. Split the movie into an RGB version and an alpha version and then use them as seperate channels. We wrote an MOV material last month for this thing we're doing but I'm not sure we can give it away quite yet. Lemme check. It would be cool to see if the two channel movie texture works on the web. :s.
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what type of shader should i use to put the 2 movies? and is there a way to use only one quicktime movie (exported with alpah from flash)?
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what type of shader should i use to put the 2 movies? and is there a way to use only one quicktime movie (exported with alpah from flash)?
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Does Unity 3 change/improve performance on how Quicktime movies as textures are handled?