1. Changes to the main header files to exclude some stuff is __SCITECH_SNAP__
is defined. The main GL/gl.h header file in SciTech SNAP is actually a wrapper
that defines a bunch of necessary stuff and then included GL/gl_mesa.h which
is the normal Mesa GL/gl.h header file renamed.
2. Changed APIENTRY * to APIENTRYP macros in the GL/gl.h and GL/glext.h header
files. This will better support other compilers like IBM VisualAge C++. I
added a basic macro for APIENTRYP to GL/gl.h (inside the !SNAP block), so
existing code will compile the same, but when the SNAP version is being
built we will use the correc definitions for the target compiler.
3. Changed a few more void * declarations to GLvoid *'s to avoid Open Watcom
compiler complaints.
4. Updates the OPENGL_VERSION macro to include a patch number (set to 0 for
now). Probably not necessary, but the original macro was wrong and we use
that macro in our code.
5. Changed _tnl_end() to _tnl_end_ctx() to avoid conflicts with _tnl_End when
using a compiler that has a case insensitive link.
Move the inclusion of windows.h from glext.h to gl.h. There are a few
good reasons for this:
- Including it in gl.h is more strightforward and makes it easier to
troubleshoot include file problems. It was sometimes hard to find it
in glext.h.
- Needed to define APIENTRY correctly. APIENTRY is used in gl.h.
- glut.h needs windows.h but does not include it, expecting the app to
include it. Including it in gl.h if not already included by the app
makes glut.h happy. This allows one to write a gl/glut app without
explictly including windows.h, which may only be really important for
toy apps like our samples and demos. But a "real" app can still
include windows.h if it wants.
