GLfloat vs float (C++)

Graphics and GPU Programming Programming OpenGL

Started by gohkgohk January 18, 2008 02:56 AM

1 comment, last by Khaos Dragon 16 years, 3 months ago

100

Author

January 18, 2008 02:56 AM

What are their difference? will there be more efficiency when using one of them to handle large amount of triangle in OpenGL? Thx

Brother Bob

10,350

January 18, 2008 03:01 AM

OpenGL doesn't specify what exactly a GLfloat is, but on most platforms they are implemented as a typedef for float.

Khaos Dragon

196

January 18, 2008 03:03 AM

Using GLFLOAT allows you be implementation independent. One implementation may use 64 bit floats, another one may use 32 bit floats. In practice though, I've only seen 32 bit floats in opengl implementations which would make float and GLFloat equivalent on a 32 bit OS.