I have QNX 6.4.1 SDP and video card gma945 (vid=0x8086, did=0x2772) used with drivers devg-gma9xx.so and devg-i830.so.
I need to draw any video info over standart photon window system. Some time ago I use for this Radeon X550 card with 
devg-radeon.so in overlay mode with chromakey support. That was ok. Now I can't get any chroma (using gma945) in 
standart overlay mode (PgCreateVideoChannel and so on) - overlay is grawed, but on all pixels, not required. Using 
Graphics Framework with layers (gf_layer_set_chroma) also don't work. With Radeon GF layers chroma key works fine.
Chroma key with gf_context_set_croma works fine, but only in drawing layer, not for Photon windows.
How can I get chroma key with gma945?

P.S.: application egl-gears from standart package of QNX SDP works with layers and chroma fine. Maybe anybody have 
source of this programm?