CAD Development : 10770


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Subject:	Re: LPub 4 Status
Newsgroups:	lugnet.cad.dev
Date:	Sat, 29 Mar 2008 22:27:49 GMT
Viewed:	11534 times

In lugnet.cad.dev, Don Heyse wrote:

to be the way to go. Then I built a new (universal?) ldglite with your static libpng and some patches to render offscreen via the carbon fns. It didn’t work from an ssh login (carbon is forbidden), but when I logged locally I got a png file without opening a graphics window. Cool!

If you used my code as an example for Core GL setup, then the error was due to a bug in my code. If not, put the following in your CGLPixelFormatAttribute array, and it should work even via ssh:

   CGLPixelFormatAttribute attrs[] =
   {
       kCGLPFADepthSize, (CGLPixelFormatAttribute)24,
       kCGLPFAColorSize, (CGLPixelFormatAttribute)24,
       kCGLPFAAlphaSize, (CGLPixelFormatAttribute)8,
       kCGLPFAStencilSize, (CGLPixelFormatAttribute)8,
       kCGLPFAAccelerated,
       kCGLPFAPBuffer,
       kCGLPFARemotePBuffer,
       (CGLPixelFormatAttribute)0
   };

The last setting (kCGLPFARemotePBuffer) is the important one for remote rendering. Note, thought, that you don’t want that setting set when saving a file from the UI. I suspect that you can skip the kCGLPFAAccelerated entry.

I updated LDView, and it now works fine remotely via ssh from an account different than the logged in user (and probably when nobody is logged in; I can’t test that right now).

--Travis

Message has 1 Reply:

		Re: LPub 4 Status
(...) Actually it turned out that despite the warning message my settings did work from a remote ssh login as a different user. The old AGL code, while it worked locally (that was a surprise), did not work remotely and produced the same warning (...) (16 years ago, 30-Mar-08, to lugnet.cad.dev)

Message is in Reply To:

		Re: LPub 4 Status
(...) Thanks guys for all the help. I grabbed BrickSmith and moved the ldraw folder that came with it to /Library. I wanted both anyhow so it seemed to be the way to go. Then I built a new (universal?) ldglite with your static libpng and some (...) (16 years ago, 27-Mar-08, to lugnet.cad.dev, FTX)

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