How come alpha is colorkey on images?

Blitz3D Forums/Blitz3D Programming/How come alpha is colorkey on images?

ozak (Posted 2005) [#1]

I mean. We're using 3D hardware under the hood right? But I can't get smooth bitmaps when my alpha channel is treated as a simple colorkey. Is the the expected behavior?

Beaker (Posted 2005) [#2]

Are you using the alpha flag of LoadTexture() ? Or are you talking about 2D?

ozak (Posted 2005) [#3]

I'm talking about 2D :) I'm probably going to convert it to 3D overlays instead to get it to work

big10p (Posted 2005) [#4]

I don't understand what you mean. What do you mean by "colorkey"?

Yan (Posted 2005) [#5]

Blitz uses DirectDraw for it's 2D operations which doesn't support alpha blending.

ozak (Posted 2005) [#6]

Ahh. I see. Say no more :)

Beaker (Posted 2005) [#7]

You could use one of the many 2D-in-3D libs around: http://homepage.ntlworld.com/config/imagepacker/ http://www.x-pressive.com/SpriteCandy amongst others.