What are the different between:
GLfloat and float | GLint and int | etc…
ehm ? none !?
look into gl.h !
…
None on current hardware. There may be differences once 64 bit processors are introduced.
As ffish says, theres no difference on most hardware today. However, there might be when 64-bit architectures are comming. A GLfloat is guarateed to be 32-bit long, while a float might be 64-bit on a 64-bit architecture. Same goes for other types, int might be of different length on different platforms, but a GLint is guarateed to give you a 32-bit singed integer.
So that’s mean GLfloat will be faster when the 64 bit architectures come out?
Depends on the architecture 
It may be optimized for 64-bit floats, just like current architecture likes 32-bit floats.
OK,thanks to all.I’ll change all my float to GLfloat! Before this,I prefer float than GLfloat because it is shorter
typedef GLfloat f;