Hello!
Hardware accelerated
unDelphiX ver.
1.7a support
alphachannel internaly. You have to load image into DXImageList as DIB 32 (with alhachannel) and it will be work (
TARGA has to convert to DIB32). You can download source from
unDelphiX home, with all samples and demos (all-in-one pack).
Sorry, I don't understand well, but simple note for D3D: Hardware accelerated unDelphiX run on D3D interface and it contain some magics for compatibility to up. I had to find solution for general base of using, sorry. I know that unDelphiX isn't perfect, but I work myself.