Triangle example using GLFW (#1258)

* Triangle example using GLFW

* Move glfw triangle example to glfw folder. Strip drawing code.

* Minor fixes to glfw window example

* Minor fixes

* Update date on window example

* Bump gfx_window_glfw to 0.15

* Update dependency version

* Fix path

Cargo.toml

@@ -63,7 +63,7 @@ version = "0.6"
 optional = true
 
 [target.'cfg(unix)'.dependencies]
-gfx_window_glfw = { path = "src/window/glfw", version = "0.14" }
+gfx_window_glfw = { path = "src/window/glfw", version = "0.15" }
 gfx_window_sdl = { path = "src/window/sdl", version = "0.6" }
 
 [target.'cfg(windows)'.dependencies]
@@ -143,6 +143,3 @@ genmesh = "0.4"
 noise = "0.1"
 image = "0.13"
 winit = "0.6"
-
-[target.x86_64-unknown-linux-gnu.dev-dependencies]
-glfw = "0.12"

src/window/glfw/Cargo.toml

@@ -1,4 +1,4 @@
-# Copyright 2015 The Gfx-rs Developers.
+# Copyright 2017 The Gfx-rs Developers.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -14,7 +14,7 @@
 
 [package]
 name = "gfx_window_glfw"
-version = "0.14.0"
+version = "0.15.0"
 description = "GLFW window for gfx-rs"
 homepage = "https://github.com/gfx-rs/gfx"
 repository = "https://github.com/gfx-rs/gfx"
@@ -28,6 +28,11 @@ documentation = "https://docs.rs/gfx_window_glfw"
 name = "gfx_window_glfw"
 
 [dependencies]
-glfw = "0.13"
+glfw = "0.14"
 gfx_core = { path = "../../core", version = "0.7" }
 gfx_device_gl = { path = "../../backend/gl", version = "0.14" }
+
+# Currently there is an issue with cargo and dev-dependencies:
+# https://github.com/rust-lang/cargo/issues/860
+# TODO: move gfx to [dev-dependencies] once it gets resolved.
+gfx = { path = "../../render", version = "0.15" }

src/window/glfw/examples/window.rs

@@ -0,0 +1,55 @@
+// Copyright 2017 The Gfx-rs Developers.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+extern crate gfx;
+extern crate gfx_window_glfw;
+extern crate glfw;
+
+use glfw::{Action, Context, Key};
+
+pub fn main() {
+    let mut glfw = glfw::init(glfw::FAIL_ON_ERRORS)
+        .ok()
+        .expect("Failed to initialize GLFW");
+
+    glfw.window_hint(glfw::WindowHint::ContextVersion(3, 2));
+    glfw.window_hint(glfw::WindowHint::OpenGlForwardCompat(true));
+    glfw.window_hint(glfw::WindowHint::OpenGlProfile(glfw::OpenGlProfileHint::Core));
+
+    let (mut window, events) = glfw.create_window(1024, 768, "Window example", glfw::WindowMode::Windowed)
+        .expect("Failed to create GLFW window.");
+
+    window.set_key_polling(true);
+    window.set_close_polling(true);
+    window.make_current();
+    glfw.set_error_callback(glfw::FAIL_ON_ERRORS);
+    let (_, _, _, _) = gfx_window_glfw::init(&mut window);
+
+    //Note: actual drawing code is no different from the triangle example, or any other.
+
+    let mut running = true;
+    while running {
+        glfw.poll_events();
+
+        for (_, event) in glfw::flush_messages(&events) {
+            match event {
+                glfw::WindowEvent::Key(Key::Escape, _, Action::Press, _) => running = false,
+                glfw::WindowEvent::Close => running = false,
+                _ => {},
+            }
+        }
+
+        window.swap_buffers();
+    }
+}