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| -rw-r--r-- | documentation/src/opengl.dox | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/documentation/src/opengl.dox b/documentation/src/opengl.dox index 35b39e4a7..94c13eb17 100644 --- a/documentation/src/opengl.dox +++ b/documentation/src/opengl.dox @@ -14,7 +14,7 @@ OpenGL calls to draw the display. Your main program should call (somewhat later) FLTK will call \p draw(). With a bit of care you can also use OpenGL to draw into -normal FLTK windows. This allows you to use Gouraud shading for +normal FLTK windows (see \ref opengl_normal below). This allows you to use Gouraud shading for drawing your widgets. To do this you use the \ref opengl_gl_start "gl_start()" and \ref opengl_gl_finish "gl_finish()" @@ -199,6 +199,10 @@ and OpenGL under macOS (see \ref osissues_retina) \section opengl_normal Using OpenGL in Normal FLTK Windows +\note Drawing both with OpenGL and Quartz in a normal FLTK window is not possible +with the macOS platform. This technique is therefore not useful under macOS because +it permits nothing more than what is possible with class Fl_Gl_Window. + You can put OpenGL code into the \p draw() method, as described in \ref subclassing_drawing in the previous chapter, or into the code for a |