diff options
| -rw-r--r-- | src/Fl_Gl_Window.cxx | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/Fl_Gl_Window.cxx b/src/Fl_Gl_Window.cxx index b305bb7f3..ac445e1d0 100644 --- a/src/Fl_Gl_Window.cxx +++ b/src/Fl_Gl_Window.cxx @@ -364,6 +364,11 @@ void Fl_Gl_Window::draw() { glDisable(GL_DEPTH_TEST); glPushMatrix(); glLoadIdentity(); + GLint viewport[4]; + glGetIntegerv (GL_VIEWPORT, viewport); + if (viewport[2] != pixel_w() || viewport[3] != pixel_h()) { + glViewport(0, 0, pixel_w(), pixel_h()); + } glOrtho(-0.5, w()-0.5, h()-0.5, -0.5, -1, 1); // glOrtho(0, w(), h(), 0, -1, 1); glLineWidth((GLfloat)pixels_per_unit()); // should be 1 or 2 (2 if highres OpenGL) @@ -408,6 +413,7 @@ float Fl_Gl_Window::pixels_per_unit() { } // creates a unique, dummy Fl_Gl_Window_Driver object used when no Fl_Gl_Window is around +// necessary to support gl_start()/gl_finish() Fl_Gl_Window_Driver *Fl_Gl_Window_Driver::global() { static Fl_Gl_Window_Driver *gwd = newGlWindowDriver(NULL); return gwd; |