www.web-discovery.net
enabling/disabling anti-aliasing
Author
on a nvidia card based system, is it possible to enable/disable antialiasing through opengl commands (perhaps opengl extensions) ?
i can do it with some tools like a geforce tweaker, but i''d like to be able to rule antialiasing within the program.
thanks
glHorizon_Project
www.web-discovery.net
www.web-discovery.net
The extension you need is GL_ARB_multisample:
http://oss.sgi.com/projects/ogl-sample/registry/ARB/multisample.txt
http://oss.sgi.com/projects/ogl-sample/registry/ARB/multisample.txt
that extension is for fullscreen antialiasing. u can also do polygon,line,point antialiasing with eg glEnable( GL_POYGON_SMOOTH )
http://www.frii.com/~martz/oglfaq/ section 14
http://members.xoom.com/myBollux
http://www.frii.com/~martz/oglfaq/ section 14
http://members.xoom.com/myBollux
Author
i enabled the extension with:
#define GL_MULTISAMPLE_ARB 0x809D
and used a
glEnable(GL_MULTISAMPLE_ARB);
but anti-aliasning is always off: am i doing something wrong ?
glHorizon_Project
www.web-discovery.net
#define GL_MULTISAMPLE_ARB 0x809D
and used a
glEnable(GL_MULTISAMPLE_ARB);
but anti-aliasning is always off: am i doing something wrong ?
glHorizon_Project
www.web-discovery.net
quote:Original post by penetrator
i enabled the extension with:
#define GL_MULTISAMPLE_ARB 0x809D
and used a
glEnable(GL_MULTISAMPLE_ARB);
but anti-aliasning is always off: am i doing something wrong ?
well.. actually - yes.
You cannot "enable" extension just by defining some constant.
If your 3D board has no such extension, glEnable(GL_MULTISAMPLE_ARB) will do nothing.
btw,
only GeForce3 supports GL_ARB_multisample
(well, we're tolking about consummer-level cards, not Wildcats..).
and you have to choose pixel format with multisample buffer.
Edited by - Serge K on June 30, 2001 8:16:04 PM
WGL_ARB_multisample is available on GeForce2's as well as GeForce3's, at least in 12.xx drivers it is.
Jason A.
---
I write code.
DelphiGL (http://delphigl.cfxweb.net)
Edited by - Jallen on June 30, 2001 10:35:47 PM
Jason A.
---
I write code.
DelphiGL (http://delphigl.cfxweb.net)
Edited by - Jallen on June 30, 2001 10:35:47 PM
Author
yes, i do have a Geforce 3, but i really don''t know how to choose pixel format with multisample buffer.
glHorizon_Project
www.web-discovery.net
glHorizon_Project
www.web-discovery.net
This topic is closed to new replies.
Advertisement
Popular Topics
Advertisement
