Supported features detection

Mantear · 2007-02-01T04:44:25

Greetings! I've begun adding more flexibility to my program to allow it to run on systems with varying degrees of OpenGL support. For example, I'm now able to set a parameter to change the mode in which my objects are drawn (direct, display list, vertex array, or vertex buffer object). I'm also able to obtain the current system information via glGetString, so I know what OpenGL version is supported (1.4 in the case of my laptop) and I have a list of supported extentions. However, I'm still falling short of enough information to know exactly what is supported and what is not. I'm not nearly fluent enough in OpenGL to know what features entered the core GL at what revision. So if I'm testing on a system with 1.4 and a feature supported via extensions, I don't know if it is a core feature of 2.0 and won't show up in the extensions list. Same goes for the other way. I don't have a good grasp of what is in the core 1.4 feature set that is only supported via extensions in earlier versions, say, 1.1. I believe there is a GLUT function that will return whether or not the given feature is supported, but I'd like to create a system that can perform such checks myself in order to become more familiar with what features are all available in OpenGL and when they became available. So, finally, my main question is if there is a master list somewhere that lists all the extensions, what OpenGL versions they apply to, and if/when they became part of the core GL. Thanks!

Graphics and GPU Programming Programming OpenGL

Started by Mantear January 30, 2007 07:45 AM

10 comments, last by V-man 17 years, 2 months ago

Mantear

251

Author

January 31, 2007 12:17 PM

@spider62: Make sure you're video card drivers are up to date.
http://www.nvidia.com/content/drivers/

V-man

813

February 01, 2007 04:44 AM

Mantear, you can continue to use an extension forever, even when it goes into core. In very rare cases, an extension gets killed (those that are extremely unpopular)

Some people prefer core functions + some ext, some only work with GL 1.1 + ext
Mostly it's cosmetic thing in your code, but sometimes it's important to use core.

I will write a doc about this and put it in the opengl.org wiki

Sig: http://glhlib.sourceforge.net
an open source GLU replacement library. Much more modern than GLU.
float matrix[16], inverse_matrix[16];
glhLoadIdentityf2(matrix);
glhTranslatef2(matrix, 0.0, 0.0, 5.0);
glhRotateAboutXf2(matrix, angleInRadians);
glhScalef2(matrix, 1.0, 1.0, -1.0);
glhQuickInvertMatrixf2(matrix, inverse_matrix);
glUniformMatrix4fv(uniformLocation1, 1, FALSE, matrix);
glUniformMatrix4fv(uniformLocation2, 1, FALSE, inverse_matrix);

Supported features detection

This topic is closed to new replies.

Popular Topics

Recommended Tutorials

Supported features detection

This topic is closed to new replies.

Popular Topics

Recommended Tutorials

Reticulating splines