Draw with alpha channel brush

[sinisrus]

For look my problem (Amiga OS4.x) :
http://amitheme.amiga-ng.org/amiga/grab.png

---

TEMP=Createbrush(NIL,640,480,#BLACK, {Hardware = True, AlphaChannel=True, Clear=True})
...
@BRUSH 1,"chat.png", {Hardware = True, LoadAlpha=True}
...

---

[airsoftsoftwair]

Ok, so you want to draw to the color channels and the alpha channel with additive mixing. It isn't possible to do this in hardware on AmigaOS at all. It's really only possible in software mode so I'm afraid you'll have to live with the slowness.

[sinisrus]

and without hardware acceleration there is no other solution a little faster?

with Gl Galore ?

[airsoftsoftwair]

No, GL Galore won't help here since it doesn't allow additive alpha blending either. It's only possible in software currently.