alpha blt palmos

[Structure]

Hi,

I just downloaded gapidraw 10 mins ago so please forgive me if this is obvious,

Im trying to target pocketpc and palmos during the design phase of my game, does the palmos support alpha blt using a second alpha surface?

I ask this cos the documentation seems to support CGapiSurface::AlphaBlt for palmos, but I don’t know how you load in the apha surface from a png as CGapiSurface::CreateSurface is only win32 on GDSURFACE_ALPHA.


Actuly while im here are there any unobvious no no’s when targeting palmos (other than the features stated not supported in the docs)

thanks

[Johan]

[Structure]

ahh ok,

is this set to change ever, beacuse things like this are mapping out how im going to develop,

ie what formats to make graphics in etc,

also is an alpha blit alot (ie over 20%) slower than a color key?

Edit: thinking about it I don’t see how this would work as youd have to save the image bitmap with a blended background, this would show though the image if it was 50% opaque then get blended with the destination 50%?

[Johan]

[StephC]

[Johan]

StephC: Yep. We already provide zip file management on the Palm OS through a virtual file system (to work around that there is no "real" file system available), so TGA is very much a good solution.

[Structure]

[Pejo Software - Per]

[quote="Structure"]
also is an alpha blit alot (ie over 20%) slower than a color key?
quote]
I think alpha blits are substantially slower than normal blits since I don't think you can operate on 2 pixels at the same time there. I am at least not doing it in in my framework, Johan Please correct me if GapiDraw does this.

[Johan]

[StephC]

[Structure]

[Pejo Software - Per]

[Structure]

[Johan]

[Structure]