> It doesn't work for me. Tried it for two days without success.
As it stands, LEVELS is only supported on the video layer. See output
from dfbinfo:
Screen (00) FBDev Primary Screen (primary screen)
Caps: VSYNC POWER_MANAGEMENT
Layer (00) VIA CLE266 Graphics (primary layer)
Type: GRAPHICS
Caps: SURFACE OPACITY ALPHACHANNEL SRC_COLORKEY BRIGHTNESS CONTRAST S
ATURATION
Layer (01) VIA Unichrome Video
Type: GRAPHICS VIDEO STILL_PICTURE
Caps: SURFACE OPACITY SCREEN_LOCATION DEINTERLACING DST_COLORKEY LEVE
LS FIELD_PARITY SCREEN_POSITION SCREEN_SIZE
Layer (02) VIA Unichrome DVD Subpicture
Type: GRAPHICS VIDEO STILL_PICTURE
Caps: SURFACE OPACITY
So what you need to do currently is enable an alpha channel on the
primary (OSD) layer and use SetLevel(-1) on the video overlay layer.
Having read Denis's recent description of the LEVELS function in
another thread, I suspect the current implementation is not complete.
I had understood that if a layer supported LEVELS, you could position
it above or below the primary using SetLevel(-1) or SetLevel(1) as
appropriate. However, Denis's description seems to imply that if two
surfaces can be swapped over, both should support LEVELS and the
gfxdriver should have a fixed range of levels that it recognises, just
-1 and 0 or 0 and 1 in this case. Is that correct?
Mark
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