2d Alphablending..with DirectDraw

Posted on 2003-02-18
Medium Priority
Last Modified: 2013-11-20
Please help me 2D alphablending method with directdraw.

Question by:can9999
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Accepted Solution

ambience earned 800 total points
ID: 7986541
what mode are you working with (32 bit?) , do you have aplha channel information in your images ?.

If you are working in modes below 32 bits then either you have hardware support for aplha or you have to emulate it yourself. What you have to do is create aplha masks with your surfaces and write your own blit routines that take into account the aplha values.

I would recommend that you have a look at CDX lib (a free directX based game library), its out-dated and incomplete but it does serve as an example of emulating aplha belnding and transparency etc.

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