Re: Multisample anti aliasing with Lispworks and OpenGL

Hi,

I have this working now. However right now its a kludge.

In cocoa.lisp (since right now I am only testing on Mac), I had to modify

choose-cocoa-pixel-format called by %make-context so that the pixel

format has the following constants enabled:

ns-open-gl-pfa-sample-buffers 1

ns-open-gl-pfa-samples 4

Overall code changed in choose-cocoa-pixel-format:

(and depth-buffer

(list ns-open-gl-pfa-depth-size depth-buffer

ns-open-gl-pfa-sample-buffers 1

ns-open-gl-pfa-samples 4)))

Now when I create an opengl pane the anti aliasing works and I do

not get any jagged edges.

So, my question would be: are there any symbols like :depth-buffer for

the above constants, the sample buffers and samples, which enables

multisampling. I checked out the doc.txt under the opengl folder, but it

does not have any symbols related to sample buffers and samples.

Any help appreciated,

Thanks

Deepak

On Wed, Apr 25, 2012 at 8:56 PM, Deepak Surti <dmsurti@gmail.com> wrote:

Hi,

I am currently evaluating Lispworks 6.1 for a 3D opengl app. I have looked up the opengl lispworks sample

but did not find support for the anti alias arb extension.
http://www.opengl.org/registry/specs/ARB/multisample.txt

The CAPI docs say that output pane does support anti aliasing via drawing mode = quality. I have tried
that setting as well in my opengl pane, but no luck.

How to do something like multisample anti aliasing with lispworks? Any pointers appreciated.

Thanks,
Deepak

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