Re: [Plib-devel] Another New Demo Program for PW

[Steve B. <sjb...@ai...>]

Fay John F Contr AAC/WMG wrote:
> I looked at the example and downloaded the code but it doesn't compile.  It
> looks for two header files "<gl/wglext.h>" and "<gl/glext.h>", neither of
> which I have.

Well, GL/glext.h (it *should* be a capital 'GL' so it compiles under case-sensitive
OS's) can be obtained from www.opengl.org.  It contains the #define or GLenum tokens
for *all* known OpenGL extensions.  I believe GL/glxext.h is also there - but I don't
know about GL/wglext.h.

> Spending a little more time with it, I find "wglGetProcAddress" which helps
> a little.  I can call functions now, but the defined constants (like
> "WGL_DRAW_TO_WINDOW_ARB") are still undefined.  Help!  They certainly don't
> make it easy, do they?

No they certainly don't.  Microsoft would dearly like OpenGL to 'go away' so
that you'd have to own a Windows machine in order to do 3D graphics.

> Looking further, I find mention of "accumulation buffer" bits in connection
> with antialiasing.  Is this Windows-speak for multisampling?

No - an accumulation buffer is something different.  You can do kinda-sorta
antialiasing on a machine that doesn't implement it properly if it has an
accumulation buffer - but I wouldn't recommend it!

---------------------------- Steve Baker -------------------------
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