This is a slighty revised version of id Software original code. Icculus
code may have some advantages on broken drivers or underpowered GPUs.
Today it's just a performance hook. This is a first step in fixing #147.
Those extensions have become part of ARB about 15 years ago and most if
not all video cards still in use should support the ARB versions. I
believe that at least parts of this code were disfunctional.
With this change the "refresh" make target doesn't any longer exists.
It was merged into the "client" target. One will need a "make clean"
before building yQ2 after this change.
This is a manual merge of Hecatomb Q2 ref b8952d5. Manual since git
couldn't do an automerge for some reasons... Notable changes are:
- QGL function pointers are removed, libGL is linked directly
- The OpenGL log framework is removed. It was disfunctional
- The gl_driver cvar is finaly gone
This change is currently untested on Windows and OS. There should
be no problems but a better Makefile integration of libGL is needed.
This is necessary since non-base OpenGL functions can't be connected by
calling the standard GetProcAddress() on Windows. To archive this the
old qwglGetProcAdress() is renamed into GetProcAdressGL() and a new
function pointer qwglGetProcAdress is introduced. On unixoid System it's
NULL and on Windows connected to wglGetProcAddress(). If it's NULL the
system wide function is called, if not the function Pointer is used.
