Re: Bluring in Performer

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Ran Yakir (rany++at++genie.bvr.co.il)
Thu, 14 Sep 1995 17:50:38 +0000

Bryan,

1. You should configure the Accumulation Buffer if you want to use it. You do
so by calling acsize(16) in your Pipe init function. You'll need to call
gconfig() afterwards. If you work with GLX, there is a different way to do so.
acsize() may fail if you don't have enough bitplanes. You have to configure the
rest of the bitplanes eating features accordingly.
If you are using something which is not RE, the situation is different. On
Indigos and such, the accumulation buffer is implemented in software, in the
host memory. However, you should initialize it by acsize().

2. If you are running on RE, you might want to try the convolve() function. It
gives you convolutions of images in high speed. You'll have to consult the man
page for convolve() to see all its features. Basicly, it does a convolution for
images that are being rectcopy()id or rectwrite()n. You can set a conolution
kernel that blures an image.

Ran

-- 
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