Jump to content
  • Advertisement
Sign in to follow this  
GosuDrew

OpenGL Lesson21 NeHe Tutorial

This topic is 4895 days old which is more than the 365 day threshold we allow for new replies. Please post a new topic.

If you intended to correct an error in the post then please contact us.

Recommended Posts

Should the speed of the green thing that moves accross the grid slow down as more blocks are colored in? I'm trying to decide whether or not my computer can handle simple OpenGL apps. This program was choppy when I ran it with the default Microsoft driver. However, I installed some other one and now the movement is smooth but it slows down as more blocks are added. Is this normal? If not, I guess I need a new laptop with a much better video card.

Share this post


Link to post
Share on other sites
Advertisement
yes, tested on a ATI 9600. never slowed down. it actually gets faster. i find it hard to believe you're taking a performance hit from a 2D example, i'd hate to see a 3D game on that card. but i know how crappy some of the consumer cards are, so i guess you need to invest a bit of cash before doing anything 3D.

Share this post


Link to post
Share on other sites
aeh ... nope :)

... but i think that it should be sufficient for lesson21. But maybe antialiasing takes away performance... just a thought.

Share this post


Link to post
Share on other sites
I doubt that card has ever heard of AA, and therefore, if it is doing it, its doing it through software.

As a note, you don't actually "Download OpenGL." If your card supports it, your card's implimentation of it will be provided with the latest drivers.

For example, I had OpenGL 1.5, until I upgraded to the latest ATI Catalyst drivers, and the implimentation got upgraded to OpenGL 2.0. I find many people expect OpenGL to be like DirectX, where you have to download it seperatly from MS. :P

Share this post


Link to post
Share on other sites
hoLogramm's got it right. Anti-aliasing of lines has a noticable affect on my 64MB GeForce2 (tends to halve the FPS with a few lines), and polygon anti-aliasing is far worse (1 anti-aliased triangle = <1 FPS, 50,000 normal triangles = 30-60 fps). Beyond that, it shouldn't cause any problems.

Share this post


Link to post
Share on other sites
I tested two new drivers that improved the performance, but fullscreen mode does not work right for either of them. Only if I create the window to be 1024x768 does the entire screen get used. Anyone know why this is happening?

Thanks.

Share this post


Link to post
Share on other sites
Sign in to follow this  

  • Advertisement
×

Important Information

By using GameDev.net, you agree to our community Guidelines, Terms of Use, and Privacy Policy.

We are the game development community.

Whether you are an indie, hobbyist, AAA developer, or just trying to learn, GameDev.net is the place for you to learn, share, and connect with the games industry. Learn more About Us or sign up!

Sign me up!