[haiku-development] Re: Question About Accelerated Drawing Functions
- From: Gerald Zajac <zajacg@xxxxxxxxxxxxx>
- To: haiku-development@xxxxxxxxxxxxx
- Date: Wed, 14 May 2008 18:36:41 -0400
Stephan Assmus wrote:
At the moment, I don't have a good overview of how these pros and cons
would balance on an old system. What is your impression, how does Haiku
feel on such hardware without acceleration?
On an old computer there is a very noticeable difference. On a computer
with an 866 MHz Pentium III processor, 256 MB memory, and a Savage 4
video chip with 8 MB of memory on the video card, the time to repaint a
window is definitely noticeable when not using 32 bit color. For
example, if I move a window across a window such as the Screen
preferences dialog, the time to repaint the controls in this dialog is
very noticeable; however, with 32 bit color it is not noticeable.
On another older computer with an 500 MHz K6-2 processor, 128 MB memory,
and the same Savage 4 video card, the time to repaint is even more
noticeable. However, on this computer, the time to repaint using 32 bit
color is also slightly noticeable.
On another computer with an 1800 MHz Duron processor, 256 MB memory, and
a ProSavage DDR chip using 32 MB of shared memory, the time to repaint
is less noticeable with non-32 bit color.
Thus, when not using 32 bit color, the time to repaint a window is less
noticeable with a faster computer. BTW, the above tests were done using
a 1280 x 1024 LCD monitor with a refresh rate of 60 Hz.
Furthermore, when running BeOS with the same S3 video driver, the time
to repaint the Screen preferences dialog was not noticeable on any of
these computers regardless of the color depth used.
Best regards,
Gerald
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