Examples now using a support module to draw

Cargo.toml

@@ -12,6 +12,3 @@ git = "https://github.com/tomaka/android-rs-glue"
 
 [dev-dependencies.gl_generator]
 git = "https://github.com/bjz/gl-rs"
-
-[dev-dependencies.gl]
-git = "https://github.com/bjz/gl-rs"

examples/fullscreen.rs

@@ -1,15 +1,16 @@
 #![feature(phase)]
+#![feature(tuple_indexing)]
 
 #[cfg(target_os = "android")]
 #[phase(plugin, link)]
 extern crate android_glue;
 
-extern crate gl;
 extern crate gl_init;
-extern crate libc;
 
 use std::io::stdio::stdin;
 
+mod support;
+
 #[cfg(target_os = "android")]
 android_start!(main)
 
@@ -38,24 +39,11 @@ fn main() {
 
     unsafe { window.make_current() };
 
-    gl::load_with(|symbol| window.get_proc_address(symbol));
     
-    let version = {
+    let context = support::load(&window);
-        use std::c_str::CString;
-        unsafe { CString::new(gl::GetString(gl::VERSION) as *const i8, false) }
-    };
-
-    println!("OpenGL version {}", version.as_str().unwrap());
-    
-    {
-        let win_size = window.get_inner_size().unwrap();
-        gl::Viewport(0, 0, win_size.val0() as libc::c_int, win_size.val1() as libc::c_int);
-    }
-
-    gl::ClearColor(0.0, 1.0, 0.0, 1.0);
 
     while !window.is_closed() {
-        gl::Clear(gl::COLOR_BUFFER_BIT);
+        context.draw_frame((0.0, 1.0, 0.0, 1.0));
         window.swap_buffers();
 
         println!("{}", window.wait_events().collect::<Vec<gl_init::Event>>());

examples/multiwindow.rs

@@ -1,12 +1,13 @@
 #![feature(phase)]
+#![feature(tuple_indexing)]
 
 #[cfg(target_os = "android")]
 #[phase(plugin, link)]
 extern crate android_glue;
 
-extern crate gl;
 extern crate gl_init;
-extern crate libc;
+
+mod support;
 
 #[cfg(target_os = "android")]
 android_start!(main)
@@ -32,17 +33,10 @@ fn main() {
 fn run(window: gl_init::Window, color: (f32, f32, f32, f32)) {
     unsafe { window.make_current() };
 
-    gl::load_with(|symbol| window.get_proc_address(symbol));
+    let context = support::load(&window);
-    
-    {
-        let win_size = window.get_inner_size().unwrap();
-        gl::Viewport(0, 0, win_size.val0() as libc::c_int, win_size.val1() as libc::c_int);
-    }
-
-    gl::ClearColor(color.val0(), color.val1(), color.val2(), color.val3());
 
     while !window.is_closed() {
-        gl::Clear(gl::COLOR_BUFFER_BIT);
+        context.draw_frame(color);
         window.swap_buffers();
 
         window.wait_events().collect::<Vec<gl_init::Event>>();

examples/support/mod.rs

@@ -0,0 +1,32 @@
+#[phase(plugin)]
+extern crate gl_generator;
+
+use gl_init;
+
+mod gl {
+    generate_gl_bindings!("gl", "core", "4.5", "struct")
+}
+
+pub struct Context {
+    gl: gl::Gl
+}
+
+pub fn load(window: &gl_init::Window) -> Context {
+    let gl = gl::Gl::load_with(|symbol| window.get_proc_address(symbol));
+
+    let version = {
+        use std::c_str::CString;
+        unsafe { CString::new(gl.GetString(gl::VERSION) as *const i8, false) }
+    };
+
+    println!("OpenGL version {}", version.as_str().unwrap());
+
+    Context { gl: gl }
+}
+
+impl Context {
+    pub fn draw_frame(&self, color: (f32, f32, f32, f32)) {
+        self.gl.ClearColor(color.0, color.1, color.2, color.3);
+        self.gl.Clear(gl::COLOR_BUFFER_BIT);
+    }
+}

examples/window.rs

@@ -1,12 +1,13 @@
 #![feature(phase)]
+#![feature(tuple_indexing)]
 
 #[cfg(target_os = "android")]
 #[phase(plugin, link)]
 extern crate android_glue;
 
-extern crate gl;
 extern crate gl_init;
-extern crate libc;
+
+mod support;
 
 #[cfg(target_os = "android")]
 android_start!(main)
@@ -16,24 +17,10 @@ fn main() {
 
     unsafe { window.make_current() };
 
-    gl::load_with(|symbol| window.get_proc_address(symbol));
+    let context = support::load(&window);
-
-    let version = {
-        use std::c_str::CString;
-        unsafe { CString::new(gl::GetString(gl::VERSION) as *const i8, false) }
-    };
-
-    println!("OpenGL version {}", version.as_str().unwrap());
-
-    {
-        let win_size = window.get_inner_size().unwrap();
-        gl::Viewport(0, 0, win_size.val0() as libc::c_int, win_size.val1() as libc::c_int);
-    }
-
-    gl::ClearColor(0.0, 1.0, 0.0, 1.0);
 
     while !window.is_closed() {
-        gl::Clear(gl::COLOR_BUFFER_BIT);
+        context.draw_frame((0.0, 1.0, 0.0, 1.0));
         window.swap_buffers();
 
         println!("{}", window.wait_events().collect::<Vec<gl_init::Event>>());