MixShader transition slowness

[darioOrtisi]

Hello. I'm using the mixshader to make a transition of two different shader. One solid shader and the second with opacity, like falloff xRay. I do an animation keyframe for transitioning the two. When the mix value start tthe animation, the render time began slow ever. The two shaders as single without transition have a good rendertime. Obviously there is opacity falloff, but the are ok.

SO there is a metod(ok i can render the two sequence and composite them) faster then using mixShader? The layer can be more fast?

Is ti normal?

Thanks

Dario

[Anonymous]

Yes, There are two ways to achieve desire effect.

First, you can try rendering individual shader and merge them in compositing (post effect)/

Second, create two render layer. then override and assign aiMatte shader (shader1 or 2 box). Now render Both and use in compositing.

[darioOrtisi]

Thanks. I did it in comp(post effects)