Solved

Is there a way to increase glPush/PopMatrix() stack size ?

Posted on 2006-10-25
8
955 Views
Last Modified: 2013-12-06
The standard minimal stack size is 32, but i wonder if there is a way to user-increase this size ? maybe using a specific gl or wgl extension ?

Thankyou in advance,
Alexander

i'll give the points only if the answer is yes, and explaining how to do it...
No answer will mean a "no", thank you...
0
Comment
Question by:Alexander
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
8 Comments
 
LVL 1

Author Comment

by:Alexander
ID: 17812272
i'll give the points only if the answer is yes, and explaining how to do it...
No answer will mean a "no", thank you...
0
 
LVL 84

Expert Comment

by:ozo
ID: 17827964
you can use glGetIntegerv(GL_MAX_MODELVIEW_STACK_DEPTH, GLint *params) to find the stack size on your implementation
0
 
LVL 1

Author Comment

by:Alexander
ID: 17827985
Sorry, my question isn't maybe clear enough : it concerns "how to increase the stack size", not "how to get current stack size".
0
Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 22

Expert Comment

by:NovaDenizen
ID: 17916514
It is often a hardware-constrained parameter, and not up for debate or adjustment.  

I believe OpenGL implementations are required to have a GL_MAX_MODELVIEW_STACK_DEPTH of at least 32.  That ought to be enough for anybody. :)  Seriously, if you need more than a few maybe you should reconsider how you use the modelview stack.

Nonauthoritative reference for 32 here:  http://www.mesa3d.org/brianp/sig97/portable.htm
0
 
LVL 5

Expert Comment

by:thegilb
ID: 18186951
I think the question you should ask yourself is "Why do I need a matrix stack larger than everybody else?".
0
 
LVL 1

Author Comment

by:Alexander
ID: 18201465
Hi, i know the answer to this question : the problem is that when using wglUseFontOutlines() to generate 3-D fonts and if I use polygon antialiasing on generated fonts, i'm able to do only 3 glPushMatrix() before calling generated font display lists. If i do more than 3 push, GL returns a stack overflow error. (of course, there is a "pop" for each "push" !!)
I've found a solution : when using FSAA (Full Scene Anti Aliasing) i've a better rendering effect and this problems dissapears.That's why i'm thinking that it is maybe a driver's or Window's bug...

Anyway, if there is a way to increase push/pop stack size (through some kind of GL extension) i'm still interested in it, it could be useful in other cases where i've no control on generated display lists, etc...
0
 
LVL 1

Accepted Solution

by:
Computer101 earned 0 total points
ID: 18715737
PAQed with points refunded (300)

Computer101
EE Admin
0

Featured Post

Enroll in June's Course of the Month

June’s Course of the Month is now available! Experts Exchange’s Premium Members, Team Accounts, and Qualified Experts have access to a complimentary course each month as part of their membership—an extra way to sharpen your skills and increase training.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Artificial Intelligence comes in many forms, and for game developers, Path-Finding is an important ability for making an NPC (Non-Playable Character) maneuver through terrain.  A* is a particularly easy way to approach it.  I’ll start with the algor…
Performance in games development is paramount: every microsecond counts to be able to do everything in less than 33ms (aiming at 16ms). C# foreach statement is one of the worst performance killers, and here I explain why.
If you’ve ever visited a web page and noticed a cool font that you really liked the look of, but couldn’t figure out which font it was so that you could use it for your own work, then this video is for you! In this Micro Tutorial, you'll learn yo…
Do you want to know how to make a graph with Microsoft Access? First, create a query with the data for the chart. Then make a blank form and add a chart control. This video also shows how to change what data is displayed on the graph as well as form…

705 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question