diff options
Diffstat (limited to 'documentation')
| -rw-r--r-- | documentation/Fl_Gl_Window.html | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/documentation/Fl_Gl_Window.html b/documentation/Fl_Gl_Window.html index 2367cbcdb..5ad853d7a 100644 --- a/documentation/Fl_Gl_Window.html +++ b/documentation/Fl_Gl_Window.html @@ -58,6 +58,7 @@ unless those Widgets are modified to draw using OpenGL calls.</P> </TD><TD align=left valign=top> <UL> <LI><A href=#Fl_Gl_Window.context>context</A></LI> +<LI><A href=#Fl_Gl_Window.context_valid>context_valid</A></LI> <LI><A href=#Fl_Gl_Window.draw>draw</A></LI> <LI><A href=#Fl_Gl_Window.draw_overlay>draw_overlay</A></LI> </UL> @@ -164,9 +165,11 @@ void mywindow::draw() { if (!valid()) { glViewport(0,0,w(),h()); glFrustum(...); - glLight(...); ...other initialization... } + if (!context_valid()) { + ...load textures, etc. ... + } ... draw your geometry here ... } </PRE></UL> @@ -178,6 +181,14 @@ draw()</TT> returns. <H4><A name=Fl_Gl_Window.invalidate>void Fl_Gl_Window::invalidate()</A></H4> The <TT>invalidate()</TT> method turns off <TT>valid()</TT> and is equivalent to calling <TT>value(0)</TT>. + +<H4><A name=Fl_Gl_Window.context_valid>char Fl_Gl_Window::context_valid() const +<BR> void Fl_Gl_Window::context_valid(char i)</A></H4> +<TT>Fl_Gl_Window::context_valid()</TT> will only be set if the +OpenGL context is created or recreated. It differs from +<TT>Fl_Gl_Window::valid()</TT> which is also set whenever the context +changes size. + <H4><A name=Fl_Gl_Window.ortho>void Fl_Gl_Window::ortho()</A></H4> Set the projection so 0,0 is in the lower left of the window and each pixel is 1 unit wide/tall. If you are drawing 2D images, your <TT> |