So I've been reading and trying to figure this out. Please let me know if it is possible.
Once a mask (png) is applied to a layer, can it be adjusted (scale, x/y) independent of the clips on the layer? I've seen the post related to dragging the mask under the transform in the layer window viewtopic.php?f=12&t=4580&p=37995&hilit=mask#p37995
That seems to work fine for adjusting a clip underneath the mask, but what if the mask needs independent adjustment? Once the mask is under the transform, is there no longer a way to transform it?
My quandary is basically this. I have a single projector and two separate layers that need projecting on to two separately masked objects. The objects are too complex to mask in the advanced output (non-geometrical) so I take a photo of the stage and draw my own mask for each layer in photoshop. This is a touring show (PJ positions will vary), so day to day i need to take a new photo, draw a new mask, and apply it to my layers. Once it is in resolume, I would like to be able to do simple transform adjustments to line up / scale each mask properly. I don't want any of the layers to scale with the masks.
Sidenote: The implementation of this concept in Arkaos Mediamaster Pro (Video Mapper) is to allow in the output window an image file to be imported as the "mask". The mask can then be stretched and scaled accordingly without effecting any layer programming. Resolume seems to have a similarly robust output routing but (as far as I can tell) doesn't have a way to deal with complex / non-geometric masks / crops.