Alpha in DirectDraw

Graphics and GPU Programming Programming

Started by Axiverse March 19, 2004 08:30 PM

2 comments, last by Axiverse 20 years, 1 month ago

Axiverse

367

Author

March 19, 2004 08:30 PM

Is there a built-in way of doing this, or must I process all the pixels???

atcdevil

145

March 19, 2004 08:39 PM

you''ll have to process all the pixels (switch to direct3d or opengl)

jacksaccountongamedev

552

March 19, 2004 08:39 PM

You have to do it manually. Belive me, it is not even worth trying. Alpha-blending in DirectDraw will kill your framerate UNLESS you only use it here and there for small sprites etc. If you want to use alpha-blending and other nice effects you''ll need to make the jump to Direct3D. You will not regret it.

-----------Autumn Fog - A 2D Action Wargame

Axiverse

367

Author

March 20, 2004 11:04 AM

I do usually work in d3d, but there are some advantages here that i dont know how to do in D3d, for ex. colorcoded surface rectangle tranfer and other things