Instead of depending on this gem's end-user installing glfw3 himself, having a separate gem for glfw3 itself is a nice approach. See how e.g. therubyracer has libv8 as a gem. This makes it incredibly easy to have things "just work", have many versions installed in parallel, handle glfw API changes by making this gem depend on the matching version, manage libglfw3 version with the Gemfile, even optionally provide prebuilt binaries per OS (possibly going as far as removing the need for a C compiler to be installed)...

Of note is that gogl/glfw also does that (although they bundle it straight into the gogl/glfw package). It really makes things easier. Splitting the lib gem from this one (like rubygems/libv8) is better overall though.

I can help in getting things going if you want a hand.

This may not make much sense in Ruby since it's for multithreaded code, but could help out where people attempt that. Rubinius stands to benefit more than MRI here, I think.

http://www.glfw.org/docs/latest/group__window.html#gab5997a25187e9fd5c6f2ecbbc8dfd7e9

This is mainly because I haven't decided how I want to implement them. Should it take a hash like

monitor.gamma_ramp = { :red => [...], :green => ... }

or an array or something else. I don't know. I mean it's kind of a one-time call so it doesn't have to be really fast, I just want it to not suck to write the call to set/get gamma ramps.

• GLFW_DONT_CARE
• GLFW_DOUBLEBUFFER
• GLFW_CONTEXT_RELEASE_BEHAVIOR
• GLFW_ANY_RELEASE_BEHAVIOR
• GLFW_RELEASE_BEHAVIOR_FLUSH
• GLFW_RELEASE_BEHAVIOR_NONE
• GLFW_FLOATING
• GLFW_FOCUSED
• GLFW_AUTO_ICONIFY

Needed for cursor creation. Also icons.

http://www.glfw.org/docs/latest/structGLFWimage.html

Probably won't directly expose this as a thing but just created on-demand since glfwCreateCursor copies the image data. Should be compatible, at a minimum, with the stb_image gem.

• glfwSetDropCallback (drag/drop files)

  http://www.glfw.org/docs/latest/group__input.html#ga41291bf15dd3ff564b3143aa6dc74a4b

• glfwSetCharModsCallback (character events)

  http://www.glfw.org/docs/latest/group__input.html#ga3f55ef5dc03a374e567f068b13c94afc

Running Glfw::Monitor.primary_monitor.gamma_ramp with Ruby 2.1.1, 2.1.0, and 2.0.0-p451 causes a segfault on OS X 10.9.2

The code I'm running is: https://gist.github.com/jstenhouse/975134f1225f7418a847

Let me know if you want the segfault dump.

I think you should add a little explanation on how to do this.

I tried now copying the "glfw-3.2.1" folder in every single path that has todo with pkg-config. I also tried renaming every folder to "glfw3". It did not worked.

Im on Windows.

• glfwMaximizeWindow
• glfwFocusWindow
• glfwSetWindowSizeLimits
• glfwSetWindowAspectRatio
• glfwSetWindowIcon

ruby-glfw3 should support the GLFWcursor additions.

• glfwCreateCursor
• glfwCreateStandardCursor
• glfwDestroyCursor
• glfwSetCursor

Trying to run Glfw::Monitor.primary_monitor.video_modes in Ruby versions 2.1.1, 2.1.0, and 2.0.0-p451 causes a segfault for me on OS X 10.9.2

The code I'm using is here: https://gist.github.com/jstenhouse/1d4daca90b7cbe4262f3

If you want the segfault let me know.

glfw3.c requires rb_num2uint, one of several functions created by ruby if and only if an int is smaller than a long. Check line 2072 of numeric.c:

#if SIZEOF_INT < SIZEOF_LONG

I recommend adding the same #if statement, with your code at line 535 within it. Add an #else statement and change all three calls to rb_num2uint, to rb_num2int. It compiled correctly then, with a warning on signed/unsigned integer conversion.

Edit: Also forgot to mention, I do believe that $LDFLAGS should be changed to $LIBS in extconf.rb, or you'll recieve all sorts of undefined references? At least I did...

E:\DemoWorkspace\opengl-> gem install glfw3
Temporarily enhancing PATH to include DevKit...
Building native extensions. This could take a while...
ERROR: Error installing glfw3:
ERROR: Failed to build gem native extension.

C:/Ruby/Ruby22/bin/ruby.exe -r ./siteconf20160903-9556-1c8soc4.rb extconf.rb

*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers. Check the mkmf.log file for more details. You may
need configuration options.

Provided configuration options:
--with-opt-dir
--without-opt-dir
--with-opt-include
--without-opt-include=${opt-dir}/include
--with-opt-lib
--without-opt-lib=${opt-dir}/lib
--with-make-prog
--without-make-prog
--srcdir=.
--curdir
--ruby=C:/Ruby/Ruby22/bin/$(RUBY_BASE_NAME)
extconf.rb:3:in ``': No such file or directory - pkg-config --static --libs glfw3 (Errno::ENOENT)
from extconf.rb:3:in`

extconf failed, exit code 1

Gem files will remain installed in C:/Ruby/Ruby22/lib/ruby/gems/2.2.0/gems/glfw3-0.4.8 for inspection.
Results logged to C:/Ruby/Ruby22/lib/ruby/gems/2.2.0/extensions/x86-mingw32/2.2.0/glfw3-0.4.8/gem_make.out

i cant install this gem on windows , and how to install glfw3 and make it to be found by pkg-config

• glfwGetTimerValue
• glfwGetTimerFrequency

I installed GLFW per the steps here, but now I get the following errors when trying to install this gem. Do you have any advice?

By the way, the test program from GLFW works just fine.

Building native extensions.  This could take a while...
ERROR:  Error installing glfw3:
    ERROR: Failed to build gem native extension.

    /home/marc/.rvm/rubies/ruby-2.0.0-p247/bin/ruby extconf.rb
creating Makefile

make "DESTDIR="
compiling glfw3.c
glfw3.c: In function ‘rb_glfw_init’:
glfw3.c:85:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
glfw3.c: In function ‘rb_monitor_position’:
glfw3.c:205:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
glfw3.c: In function ‘rb_monitor_physical_size’:
glfw3.c:225:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
glfw3.c: In function ‘rb_monitor_video_modes’:
glfw3.c:368:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
glfw3.c:375:5: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
glfw3.c: In function ‘rb_monitor_video_mode’:
glfw3.c:396:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
glfw3.c:398:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
glfw3.c: In function ‘rb_monitor_set_gamma_ramp’:
glfw3.c:513:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
glfw3.c: In function ‘rb_window_new’:
glfw3.c:667:28: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
glfw3.c: In function ‘rb_window_destroy’:
glfw3.c:685:5: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
glfw3.c:686:32: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
glfw3.c: In function ‘rb_monitor_get_gamma_ramp’:
glfw3.c:442:16: warning: ‘ramp’ is used uninitialized in this function [-Wuninitialized]
linking shared-object glfw3/glfw3.so
/usr/bin/ld: /usr/local/lib/libglfw3.a(context.c.o): relocation R_X86_64_32S against `.rodata' can not be used when making a shared object; recompile with -fPIC
/usr/local/lib/libglfw3.a: could not read symbols: Bad value
collect2: error: ld returned 1 exit status
make: *** [glfw3.so] Error 1

Currently untested with 2.2.x, need to make time for that. C API had some stuff stripped out and being the hot garbage that the Ruby C API is, I have no idea if this still builds or if I need to rewrite some stuff to retain compatibility.

With GLFW 3.1 out the door, support for it needs to be added.

http://www.glfw.org/docs/latest/group__window.html#ga1a9fd382058c53101b21cf211898f1f1

• glfwGetKeyName
• glfwSetJoystickCallback