Under non-macOS platforms, the key is to call glUseProgram(0); after having used OpenGL 3
which allows to then use OpenGL 1 and draw FLTK widgets over the OpenGL3 scene.
Under macOS, this is impossible because macOS GL3 contexts are not compatible
with GL1. The solution implemented here is to create an additional Fl_Gl_Window
placed above and sized as the GL3-based window, to give it a non opaque,
GL1-based context, and to put the FLTK widgets in that additional window.
* Fix build system for unites,
* Updated unittest to check OpenGL drawing.
Making sure that OpenGL drawing is exactly the same
as native drawing to make FLTK widget rendering
look the same in GL windows.
* Make OpenGL optional.
* Implemented clipping in OpenGL
* unites drawing fast shapes
* Fixed CMake
* Updating unittest.
Added tests for fl_pi and fl_arc (int)
Renamed tab to render complex shapes.
* Improved OpenGL FLTK drawing emulation.
* Fixed GTK ROUND DOWN BOX
* Fixing Makefile for unittest
* Correctly aligning OpenGL text.
* Fixed text alignment in GL windows.
Explained the "FLTK over GL " example in Cube.
* Overlapping test.
* Better GL graphics alignment.
* Drawing the focus rect.
* Adding Alpha Channel support for GL.
* Added FLTK-on-GL documentation.
- remove obsolete svn '$Id$' tags from all source files
- update .fl files and generated files accordingly
- replace 'http://www.fltk.org' URL's with 'https://...'
- replace bug report URL 'str.php' with 'bugs.php'
- remove trailing whitespace
- fix other whitespace errors flagged by Git
- add and/or fix missing or wrong standard headers
- convert tabs to spaces in all source files
The only relevant code changes are in the fluid/ folder where
some .fl files and other source files were used to generate
the '$Id' headers and footers.
Replace compiler/preprocessor/platform macro "WIN32" with "_WIN32".
Replace "WIN32" in text and documentation with "Windows".
Replace "MSWindows" with "Windows".
To do: README.Windows.txt (and maybe other documentation as well)
needs updates.
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12655 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
Also reformatted very long lines, removed trailing spaces.
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.4@12204 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
On the X11/MSWindows platforms, this requires external installation of the GLEW library.
This fixes STR#3198 and STR#3257.
Added two new examples programs.
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@10876 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
also corrected function signatures in opengl.dox
added doxygen comments to FL/gl.h, src/gl_start.cxx, src/gl_draw.cxx
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@6749 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
also relaxed table widths in intro.dox to use 100% instead of 700 pixels
to fit with doxygen header rule and new footer navigation bars
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@6724 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
moved class/function reference pages to end of index table,
swapped editor/drawing chapters in Doxybook for PDF version
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@6721 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
This was just the first round. A lot more work will be needed here
because none of the gl_* functions are doxygenated, and there are
a lot of html links to other pages to be tidied up!
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@6706 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
