Hardware/Softare how to select?

How I can change between Hardware and Software Rendering?

I think one way is to call your functions instead of calling directly GL functions.

For example

void myGlBlendFunc(GLEnum e1, GLEnum e2)
{
if(software)
myOwnBlendFunc(e1,e2)
else
glBlendFunc(e1,e2)
}

or better assigning pointers to functions, so you can switch between OGL,DirectX,Software or wathever you want.

rIO
http://www.spinningkids.org/umine