Examples don't compile about glium_graphics

[bvssvni]

The examples works fine on OSX. This is a 2D graphics backend for Glium, so there is not much documentation here. If you are new to Piston I recommend looking at the overview first.

You probably need to install FreeType to make the examples work. See How to install FreeType.

[iirelu]

Here's what I get when I try compiling draw_state.rs:

src/main.rs:29:28: 29:44 error: the trait `window::OpenGLWindow` is not implemented for the type `glutin_window::GlutinWindow` [E0277]
src/main.rs:29     let ref glium_window = GliumWindow::new(window).unwrap();
                                          ^~~~~~~~~~~~~~~~
src/main.rs:29:28: 29:44 help: run `rustc --explain E0277` to see a detailed explanation
src/main.rs:29:28: 29:44 note: required by `glium_graphics::window::GliumWindow::new`
src/main.rs:50:19: 50:35 error: no method named `clear_stencil` found for type `&mut glium_graphics::back_end::GliumGraphics<'_, '_, glium::Frame>` in the current scope
src/main.rs:50                 g.clear_stencil(0);
                                 ^~~~~~~~~~~~~~~~
src/main.rs:50:19: 50:35 help: items from traits can only be used if the trait is in scope; the following trait is implemented but not in scope, perhaps add a `use` for it:
src/main.rs:50:19: 50:35 help: candidate #1: use `graphics::graphics::Graphics`
src/main.rs:49:17: 49:22 error: the trait `graphics::graphics::Graphics` is not implemented for the type `glium_graphics::back_end::GliumGraphics<'_, '_, glium::Frame>` [E0277]
src/main.rs:49                 clear([0.8, 0.8, 0.8, 1.0], g);
                               ^~~~~
src/main.rs:49:17: 49:22 help: run `rustc --explain E0277` to see a detailed explanation
src/main.rs:49:17: 49:22 note: required by `graphics::clear`
src/main.rs:52:22: 52:83 error: the trait `graphics::graphics::Graphics` is not implemented for the type `glium_graphics::back_end::GliumGraphics<'_, '_, glium::Frame>` [E0277]
src/main.rs:52                     .draw([0.0, 0.0, 100.0, 100.0], &c.draw_state, c.transform, g);
                                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src/main.rs:52:22: 52:83 help: run `rustc --explain E0277` to see a detailed explanation
src/main.rs:56:22: 56:83 error: the trait `graphics::graphics::Graphics` is not implemented for the type `glium_graphics::back_end::GliumGraphics<'_, '_, glium::Frame>` [E0277]
src/main.rs:56                     .draw([50.0, 50.0, 100.0, 100.0], &draw_state, c.transform, g);
                                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src/main.rs:56:22: 56:83 help: run `rustc --explain E0277` to see a detailed explanation
src/main.rs:64:30: 64:70 error: the trait `graphics::graphics::Graphics` is not implemented for the type `glium_graphics::back_end::GliumGraphics<'_, '_, glium::Frame>` [E0277]
src/main.rs:64                 Image::new().draw(&rust_logo, &clipped, transform, g);
                                            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src/main.rs:64:30: 64:70 help: run `rustc --explain E0277` to see a detailed explanation
src/main.rs:68:22: 68:83 error: the trait `graphics::graphics::Graphics` is not implemented for the type `glium_graphics::back_end::GliumGraphics<'_, '_, glium::Frame>` [E0277]
src/main.rs:68                     .draw([0.0, 0.0, 50.0, 50.0], clip_draw_state(), transform, g);
                                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
src/main.rs:68:22: 68:83 help: run `rustc --explain E0277` to see a detailed explanation
src/main.rs:69:30: 72:34 error: the trait `graphics::graphics::Graphics` is not implemented for the type `glium_graphics::back_end::GliumGraphics<'_, '_, glium::Frame>` [E0277]
src/main.rs:69                 Image::new().draw(&rust_logo,
src/main.rs:70                     if clip_inside { inside_draw_state() }
src/main.rs:71                     else { outside_draw_state() },
src/main.rs:72                     transform, g);
src/main.rs:69:30: 72:34 help: run `rustc --explain E0277` to see a detailed explanation
error: aborting due to 8 previous errors
Could not compile `space`.

[mitchmindtree]

Hi @iirelu 😸 Are you sure you're using the latest version of glium_graphics? If you haven't already, perhaps try doing a cargo update to ensure you have the latest version of the dependencies as well. It's strange you're getting compile errors when travis seems to be passing without problems 😕

[iirelu]

Huh. Could've sworn I tried that.

I should probably report a bug to rust-lang about those error messages being weird as hell. I spent a whole week trying to figure out why it said OpenGLWindow wasn't implemented for GlutinWindow, I guess it's because its two different versions or something? Weird.

Thanks though! This finally gives me a standing point to get things working from.

[mitchmindtree]

@iirelu yeah you're not the first to come across that problem! The only reason I knew to recommend that solution is because I've run into it too many times myself. I believe there has been discussion on providing warnings for version conflicts (I think perhaps in the rust-lang/crates.io issues?) but I don't have time to check atm.

Anyway, glad you got it working! 👍