Changed OpenGL support for the Mac OS X platform: use cocoa instead of deprecated AGL.

All changes are mac-specific, except a very minor change in file src/gl_draw.cxx
where string drawing wrongly claimed to support @symbol, not possible
because symbols are drawn using non-GL primitives.

Unchanged application code can use the new FLTK code.
In addition, the new code allows mac applications to draw OpenGL scenes
at high resolution on so-called 'retina' displays, but this requires some
support from app code. They must call, before opening GL windows,
Fl::use_high_resolution(1);
and change their glViewport() calls as follows
glViewport(0, 0, pxel_w(), pixel_h());
This uses 2 new member functions of the Fl_Gl_Window class,
pixel_w() and pixel_h() returning the window dimensions in pixel
units, that is, twice the w() and h() when the window is mapped
on a retina display.


git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@10498 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

1 files changed, 2 insertions, 1 deletions

diff --git a/test/cube.cxx b/test/cube.cxx
index 1fd396e1f..9f4cf0aa6 100644
--- a/test/cube.cxx
+++ b/test/cube.cxx
@@ -94,7 +94,7 @@ void cube_box::draw() {
   lasttime = lasttime+speed;
   if (!valid()) {
     glLoadIdentity();
-    glViewport(0,0,w(),h());
+    glViewport(0,0,pixel_w(),pixel_h());
     glEnable(GL_DEPTH_TEST);
     glFrustum(-1,1,-1,1,2,10000);
     glTranslatef(0,0,-10);
@@ -167,6 +167,7 @@ void print_cb(Fl_Widget *w, void *data)
 // end of printing demo
 
 int main(int argc, char **argv) {
+  Fl::use_high_res_GL(1);
   makeform(argv[0]);
   // added to demo printing
   form->begin();