# Textured fonts working strangly with windowed

**URL:** <https://discourse.glfw.org/t/textured-fonts-working-strangly-with-windowed/421>\
**Category:** support\
**Created:** [April 24, 2007, 11:44pm UTC](https://discourse.glfw.org/t/textured-fonts-working-strangly-with-windowed/421 "2007-04-24T23:44:39Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![system](https://canada1.discourse-cdn.com/flex035/uploads/glfw/original/1X/b8cdefe6b61b8d5aee6c43b2c56e9cf5eabecfe4.svg) [@system](https://discourse.glfw.org/u/system)\
**Post date:** [April 24, 2007, 11:44pm UTC](https://discourse.glfw.org/t/textured-fonts-working-strangly-with-windowed/421/1 "2007-04-24T23:44:39Z")

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**[binaryspike](https://sourceforge.net/u/binaryspike/)** wrote on [Tuesday, April 24, 2007](https://sourceforge.net/p/glfw/discussion/247562/thread/d9665d19/#700a):

I am working on a project and the textured fonts (FTGL) will render 25-30 frames per second (fps) in windowed mode. In fullscreen it will run around 3,000fps.

This is windows, so I know very little on how it creates context’s. I learned OpenGL on mac.

I have an ATI Radeon X1650 Pro. 25fps for a spinning box in windowed mode means something is wrong. As I run bzflag (SDL) in windowed mode at 150+fps full graphics.

Obviously it could be a “problem” between GLFW and FTGL (the font renderer)… But it would have to do with how GLFW sets up it’s fullscreen compared to it’s windowed.

I tested both under 32 bit colors, just to make sure it wasn’t that (as I run 1024x768 true color)

Thanks!  
BinarySpike

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**Author:** ![system](https://canada1.discourse-cdn.com/flex035/uploads/glfw/original/1X/b8cdefe6b61b8d5aee6c43b2c56e9cf5eabecfe4.svg) [@system](https://discourse.glfw.org/u/system)\
**Post date:** [April 25, 2007, 10:08pm UTC](https://discourse.glfw.org/t/textured-fonts-working-strangly-with-windowed/421/2 "2007-04-25T22:08:41Z")

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**[elmindreda](https://sourceforge.net/u/elmindreda/)** wrote on [Wednesday, April 25, 2007](https://sourceforge.net/p/glfw/discussion/247562/thread/d9665d19/#d4fb):

I wonder if perhaps your app has slipped into software rendering, considering the extreme difference.

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**Author:** ![system](https://canada1.discourse-cdn.com/flex035/uploads/glfw/original/1X/b8cdefe6b61b8d5aee6c43b2c56e9cf5eabecfe4.svg) [@system](https://discourse.glfw.org/u/system)\
**Post date:** [April 26, 2007, 1:43am UTC](https://discourse.glfw.org/t/textured-fonts-working-strangly-with-windowed/421/3 "2007-04-26T01:43:27Z")

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**[binaryspike](https://sourceforge.net/u/binaryspike/)** wrote on [Thursday, April 26, 2007](https://sourceforge.net/p/glfw/discussion/247562/thread/d9665d19/#db4a):

Gave the windowed mode to a friend, and it ran 480fps, his was an Moblity Radeon 7500

So you are correct. I probably don’t have the correct drivers installed.

I also gave the fullscreen mode version of my program to him, and it crashed. I only changed the GLFW\_WINDOW to GLFW\_FULLSCREEN

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**Author:** ![system](https://canada1.discourse-cdn.com/flex035/uploads/glfw/original/1X/b8cdefe6b61b8d5aee6c43b2c56e9cf5eabecfe4.svg) [@system](https://discourse.glfw.org/u/system)\
**Post date:** [April 28, 2007, 5:44am UTC](https://discourse.glfw.org/t/textured-fonts-working-strangly-with-windowed/421/4 "2007-04-28T05:44:33Z")

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**[binaryspike](https://sourceforge.net/u/binaryspike/)** wrote on [Saturday, April 28, 2007](https://sourceforge.net/p/glfw/discussion/247562/thread/d9665d19/#8837):

I moved to SDL, and I get 1,000fps in windowed. So this seems to be a GLFW problem.

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**Author:** ![system](https://canada1.discourse-cdn.com/flex035/uploads/glfw/original/1X/b8cdefe6b61b8d5aee6c43b2c56e9cf5eabecfe4.svg) [@system](https://discourse.glfw.org/u/system)\
**Post date:** [April 28, 2007, 5:50am UTC](https://discourse.glfw.org/t/textured-fonts-working-strangly-with-windowed/421/5 "2007-04-28T05:50:35Z")

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**[binaryspike](https://sourceforge.net/u/binaryspike/)** wrote on [Saturday, April 28, 2007](https://sourceforge.net/p/glfw/discussion/247562/thread/d9665d19/#700a/3bdb):

I’m nearly positive that the error is related to this bug report:  
[http://sourceforge.net/tracker/index.php?func=detail&aid=1614766&group\_id=72569&atid=534938](http://sourceforge.net/tracker/index.php?func=detail&aid=1614766&group_id=72569&atid=534938)

As after I tried multiple monitors things when strange till I re-installed drivers. (like many many GLUT programs not working)

Hope I helped!

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**Author:** ![system](https://canada1.discourse-cdn.com/flex035/uploads/glfw/original/1X/b8cdefe6b61b8d5aee6c43b2c56e9cf5eabecfe4.svg) [@system](https://discourse.glfw.org/u/system)\
**Post date:** [May 2, 2007, 3:00pm UTC](https://discourse.glfw.org/t/textured-fonts-working-strangly-with-windowed/421/6 "2007-05-02T15:00:03Z")

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**[elmindreda](https://sourceforge.net/u/elmindreda/)** wrote on [Wednesday, May 02, 2007](https://sourceforge.net/p/glfw/discussion/247562/thread/d9665d19/#700a/3bdb/feb7):

If it seems connected then please post a verbose follow-up to that bug, with all the details you can think of as even remotely relevant. I can’t keep track of cross-references between forum and tracker for very long, so this thread will get lost in the noise before long. Tracker items are forever.