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Mac OS: support for high resolution OpenGL windows.

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Methods Fl::event_x_pixel() and Fl::event_y_pixel() committed at r.10941
are removed. Instead method Fl_Gl_Window::pixels_per_unit() is added.

The documentation explains in more detail how to write cross-platform
FLTK code supporting high resolution OpenGL windows on retina displays.

The examples/OpenGL3test.cxx app exercises Fl_Gl_Window::pixels_per_unit().

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@10945 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
This commit is contained in:
Manolo Gouy
2015-12-02 09:59:37 +00:00
parent 30e572985b
commit 22af09dae7
13 changed files with 38 additions and 97 deletions
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@@ -34,8 +34,8 @@ CHANGES IN FLTK 1.3.4 RELEASED: ??? ?? ????
(Apple GL library) to draw OpenGL data. Instead, it uses standard
cocoa APIs. This allows FLTK to support drawing GL scenes at high
resolution when an Fl_Gl_Window is mapped to a 'retina' display.
- Added Fl_Gl_Window::pixel_w(), Fl_Gl_Window::pixel_h(), Fl::event_x_pixel(),
and Fl::event_y_pixel() useful for high resolution OpenGL windows.
- Added Fl_Gl_Window::pixel_w(), Fl_Gl_Window::pixel_h(), and
Fl_Gl_Window::pixels_per_unit() useful for high resolution OpenGL windows.
- fl_read_image() now captures all pixels within the rectangle
described by its arguments, whether they belong to a GL scene
or not (STR #3142). It also captures subwindows of GL windows.