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Remove obsolete content in documentation of Fl_Gl_Window

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see "About the documentation of OpenGL usage in FLTK" in fltk.coredev
This commit is contained in:
ManoloFLTK 2024-07-19 07:33:03 +02:00
parent 4fb4f395a3
commit 3fbb1c4af2
1 changed files with 1 additions and 28 deletions
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29
documentation/src/opengl.dox
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@ -39,34 +39,7 @@ To make a subclass of Fl_Gl_Window, you must provide:
If your subclass provides static controls in the window, they
must be redrawn whenever the \p FL_DAMAGE_ALL bit is set
in the value returned by \p damage(). For double-buffered
windows you will need to surround the drawing code with the
following code to make sure that both buffers are redrawn:
\code
#ifndef MESA
glDrawBuffer(GL_FRONT_AND_BACK);
#endif // !MESA
... draw stuff here ...
#ifndef MESA
glDrawBuffer(GL_BACK);
#endif // !MESA
\endcode
<CENTER><TABLE WIDTH="80%" BORDER="1" CELLPADDING="5" CELLSPACING="0" BGCOLOR="#cccccc">
<TR>
<TD><B>Note:</B>
If you are using the Mesa graphics library, the call
to \p glDrawBuffer() is not required and will slow
down drawing considerably. The preprocessor instructions
shown above will optimize your code based upon the
graphics library used.
</TD>
</TR>
</TABLE></CENTER>
in the value returned by \p damage().
\subsection opengl_defining Defining the Subclass