We are developing an application and need to Display a GUI on the graphics
layer (layer [edit] 0).
We also need to display video on the Video layer (layer [edit] 1) at the
same time.
I am not sure of the combination of flags/options (ALPHA, OPACITY etc) and
the opacity values to be used for the two layers, so that both the graphics
and the video would be visible simultaneously.
I presume you want the primary (graphics) layer on top of the video layer
and want an alpha channel for the graphics layer so you can see through to
the video wherever there is no graphics? Is that correct?
For that, your hardware will need to support the LEVELS capability to allow
you to put the layers in that order, and the ALPHACHANNEL capability for the
primary layer to allow you to see through it. What hardware are you using?
OPACITY is not relevant as that is used to set a global opacity value for
the whole plane. I don't think that's what you want.
Regards,
Mark
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