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  VolatileImage and BITMASK  (Read 1564 times)
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Offline Max Pesce

Junior Devvie




Nil tam arduum quod non ingenio vincas


« Posted 2003-08-18 05:38:13 »

Hi

I remember that in older VM versions VolatileImages cannot have one BITMASK of transparency...

Now I don't know what is the situation, but when I create images using CreateCompatibleImage (with BITMASK) I cannot take acceleration (the drawings are slow compared with opaque VolatileImages).


Anyone can help?

Many thanks

Offline MGodehardt

Junior Devvie




why does the chicken cross the road?


« Reply #1 - Posted 2003-09-06 23:05:12 »

In version 1.4.x acceleration for TRANSLUSCENT Images is not enabled use this to enable it.

System.setProperty("sun.java2d.translaccel", "true");
System.setProperty("sun.java2d.ddforcevram", "true");

but htis has some minor side effects, diagonal lines will be drawn translusent ( u have to set the alpha channel explicitly or otherwise u will not see them).

Use BITMASK instead this will give u transparency 0=not visible 0xff visible ( only values accepted for alpha channel )

Offline Max Pesce

Junior Devvie




Nil tam arduum quod non ingenio vincas


« Reply #2 - Posted 2003-09-08 06:26:31 »

Thanks  Smiley

But anyway I've ported my lib on JOG and now I really don't have such problems...

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