[Plib-devel] [PATCH] Patch for ssg water example

[Jan R. <slo...@gm...>]

Hello!

I've just experienced another problem, once again with the water example.
This time it's NVIDIA's fault ;-)

I recently upgraded my NVIDIA drivers, which included new versions of the
OpenGL headers. The new glext.h now conforms to the OpenGL ABI for Linux
(http://oss.sgi.com/projects/ogl-sample/ABI/): It separates the extension
prototypes from the rest of the header file using the GL_GLEXT_PROTOTYPES
define. According to the ABI paper,

[quote]
 "To define prototypes as well as typedefs, the application must #define 
 GL_GLEXT_PROTOTYPES prior to including gl.h or glx.h."
[/quote]

The water demo uses extensions for multitexturing, so compilation fails
(glActiveTexture() seems to be undefined although the implementation
conforms to OpenGL > 1.3).

The attached patch adds the above #define. I don't know if this effects
other platforms as well. Win32 surely is unaffected (always using OpenGL < 1.3
and therefore using the ARB extension).

I've also made some more changes to the example:

- converted from GLUT to PW (I thought it would be nice to have more
  "pure" PLIB examples)
- fixed some compiler warnings (float/double issues, Win32 only)
- use an instance of ssgContext instead of using the deprecated context-related
  function calls (I noticed that there's no other example which uses this
  class)

Can someone please review this patch and add it to the CVS?

Kind regards,
Jan R.

-- 
Jan Reucker
email: jan dot reucker at web dot de
web:   http://www.reucker-online.de