2 files changed, 5 insertions, 5 deletions
diff --git a/FL/Fl_Gl_Window.H b/FL/Fl_Gl_Window.H
index aed24edcd..135a343fa 100644
--- a/FL/Fl_Gl_Window.H
+++ b/FL/Fl_Gl_Window.H
@@ -208,7 +208,7 @@ public:
   // Note: Doxygen docs in Fl_Widget.H to avoid redundancy.
   virtual Fl_Gl_Window* as_gl_window() {return this;}
   
-  int pixels_per_unit();
+  float pixels_per_unit();
   /** Gives the window width in OpenGL pixels.
    Generally identical with the result of the w() function, but for a window mapped to
    an Apple 'retina' display, and if Fl::use_high_res_GL(bool) is set to true,
@@ -216,7 +216,7 @@ public:
    between low and high resolution displays and automatically adjusts the returned value.
    \version 1.3.4
    */
-  int pixel_w() { return pixels_per_unit() * w(); }
+  int pixel_w() { return int(pixels_per_unit() * w() + 0.5f); }
   /** Gives the window height in OpenGL pixels.
    Generally identical with the result of the h() function, but for a window mapped to
    an Apple 'retina' display, and if Fl::use_high_res_GL(bool) is set to true,
@@ -224,7 +224,7 @@ public:
    between low and high resolution displays and automatically adjusts the returned value.
    \version 1.3.4
    */
-  int pixel_h() { return pixels_per_unit() * h(); }
+  int pixel_h() { return int(pixels_per_unit() * h() + 0.5f); }
   
   ~Fl_Gl_Window();
   /**
diff --git a/FL/Fl_Gl_Window_Driver.H b/FL/Fl_Gl_Window_Driver.H
index 35e3f3390..db8702185 100644
--- a/FL/Fl_Gl_Window_Driver.H
+++ b/FL/Fl_Gl_Window_Driver.H
@@ -49,7 +49,7 @@ public:
   virtual ~Fl_Gl_Window_Driver() {}
   static Fl_Gl_Window_Driver *newGlWindowDriver(Fl_Gl_Window *w);
   static Fl_Gl_Window_Driver *global();
-  virtual int pixels_per_unit() {return 1;}
+  virtual float pixels_per_unit() {return 1;}
   virtual void before_show(int& need_redraw) {}
   virtual void after_show(int need_redraw) {}
   virtual void invalidate();
@@ -95,7 +95,7 @@ class NSOpenGLPixelFormat;
 class Fl_Cocoa_Gl_Window_Driver : public Fl_Gl_Window_Driver {
   friend class Fl_Gl_Window_Driver;
   Fl_Cocoa_Gl_Window_Driver(Fl_Gl_Window *win) : Fl_Gl_Window_Driver(win) {}
-  virtual int pixels_per_unit();
+  virtual float pixels_per_unit();
   virtual void before_show(int& need_redraw);
   virtual void after_show(int need_redraw);
   virtual int mode_(int m, const int *a);