| Re: [AD] Memory Bitmap to Display blit slow? |
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On 28 feb 2009, at 13:58, Thomas Fjellstrom wrote:
I've been noticing this for a while now, but under linux, with the
nvidia
binary drivers, bliting a memory bitmap to a regular allegro 5
display is
horrendously slow.
It's always been like that for my in OS X, so I don't think it's a
Linux issue. I haven't tried this example, but the ex_membmp example
shows the same behavior: it's 4fps vs 1230fps.
Anyone else have any ideas? As it is, bliting memory bitmaps to a
display is unusable on my system right now.
I guess something is ot being done entirely correctly somewhere, but I
have no idea where or even where to start looking.
Some of our OpenGL guru's will have to look into this. ;)
Also, in a related note, when I turn the same example's blending
off, the text
disappears and the primitives change brightness.
I can't reproduce this in that sense, but when I change the brightness
nothing much happens at all, except for the drawing order between text
and primitives apparently changing (primitives now go over the text
instead of behind the text).
I haven't looked into this.
Evert