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 CAD / Development / Macintosh / 504
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Subject: 
Re: LDGLite outputting gobble-dee-goo to terminal window
Newsgroups: 
lugnet.cad.dev.mac
Date: 
Thu, 7 Aug 2003 01:12:16 GMT
Viewed: 
2425 times
  
In article <HJ7AAy.193v@lugnet.com>,
"Don Heyse" <dheyse@hotmail.spam.go.away.com> wrote:

In lugnet.cad.dev.mac, Christopher Masi wrote:
"Don Heyse" <dheyse@hotmail.spam.go.away.com> wrote:

Oops... before I get to excited, moving a piece creates some bitchin'
trail lines :) that go away when the view is changed.

http://users.rcn.com/cjmasi/trail_lines.png

I think I may have found the cause of this one.

  http://www.geocrawler.com/archives/3/704/2000/9/0/4312491/

This guy found the same bug on his Mac.  Writing to the GL_FRONT
buffer seems to also write over whatever you may have stashed away
in the GL_BACK buffer.  The only workaround I can think of is to
copy the image to regular system memory, or redraw the whole model
every time you move a part.  Copying an an opengl image buffer to
system memory is typically quite slow.  How slow are the full
model redraws when you change the view?

  Less that a second for my Mini, but it is mini :) About 4 seaconds for
my black tank car, which has 284 (?) parts. About 8 seconds to draw my
GP30. The dat for the GP30 has 817 lines (not all of them are parts).
  Redraw the model every time... that would mean a eight second wait for
every move of the brick, right? I think that would be a bad idea. The
intro level Macs aren't that much faster than mine.
   How bad a hit is system memory? Do the new fancy Macs have the smae
trail line problem?
  My feeling is... as long as you are having fun tracking down bugs,
track away, but if it it is driving you crazy, and you are only fixing
it for us old timers (though there are always more Mac old timers than
there are in other OS's) a big "don't do this, but this works fine"
section in the read me would be more than adequate.

Ok, I might've fixed all of this.  If not, I'll have to make a 1.1
release real soon because I couldn't wait any longer.  Ldglite has
finally reached 1.0.  Give the OS X executable a spin and see what
I missed.

  http://ldglite.sourceforge.net/

By the way, Tom Bozzo sent me a really nice screenshot of your GP30
and said you approved it's use on the ldglite web page.  I hope that's
all right.

Don

Yep, it is cool to have my model as the edit mode screen shot. It is the
first model that I created entirely with LDGLite too.

I just finished downloading 1.0.0. I'll give you a report as soon as I
have had a chance to do some testing.

Chris



Message is in Reply To:
  Re: LDGLite outputting gobble-dee-goo to terminal window
 
(...) Ok, I might've fixed all of this. If not, I'll have to make a 1.1 release real soon because I couldn't wait any longer. Ldglite has finally reached 1.0. Give the OS X executable a spin and see what I missed. (URL) the way, Tom Bozzo sent me a (...) (21 years ago, 6-Aug-03, to lugnet.cad.dev.mac)

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