winit-sonoma-fix/examples/support/mod.rs

85 lines
2.3 KiB
Rust
Raw Normal View History

2014-10-05 04:17:02 +11:00
#![cfg(feature = "window")]
2015-04-03 07:04:17 +11:00
use std::ffi::CStr;
2014-09-21 19:33:09 +10:00
use glutin;
2014-09-12 18:20:15 +10:00
#[cfg(not(target_os = "android"))]
mod gl {
2014-12-24 18:09:16 +11:00
include!(concat!(env!("OUT_DIR"), "/test_gl_bindings.rs"));
2014-09-12 18:20:15 +10:00
}
#[cfg(target_os = "android")]
mod gl {
pub use self::Gles1 as Gl;
2014-12-24 18:09:16 +11:00
include!(concat!(env!("OUT_DIR"), "/test_gles1_bindings.rs"));
}
pub struct Context {
gl: gl::Gl
}
2014-09-21 19:33:09 +10:00
pub fn load(window: &glutin::Window) -> Context {
2014-11-06 01:22:21 +11:00
let gl = gl::Gl::load(window);
2015-01-08 19:28:22 +11:00
let version = unsafe {
2015-04-03 07:04:17 +11:00
let data = CStr::from_ptr(gl.GetString(gl::VERSION) as *const i8).to_bytes().to_vec();
String::from_utf8(data).unwrap()
};
2015-01-08 19:28:22 +11:00
println!("OpenGL version {}", version);
Context { gl: gl }
}
impl Context {
2014-09-12 18:20:15 +10:00
#[cfg(not(target_os = "android"))]
pub fn draw_frame(&self, color: (f32, f32, f32, f32)) {
2014-11-06 01:22:21 +11:00
unsafe {
self.gl.ClearColor(color.0, color.1, color.2, color.3);
self.gl.Clear(gl::COLOR_BUFFER_BIT);
self.gl.Begin(gl::TRIANGLES);
self.gl.Color3f(1.0, 0.0, 0.0);
self.gl.Vertex2f(-0.5, -0.5);
self.gl.Color3f(0.0, 1.0, 0.0);
self.gl.Vertex2f(0.0, 0.5);
self.gl.Color3f(0.0, 0.0, 1.0);
self.gl.Vertex2f(0.5, -0.5);
self.gl.End();
self.gl.Flush();
}
2014-09-12 18:20:15 +10:00
}
#[cfg(target_os = "android")]
pub fn draw_frame(&self, color: (f32, f32, f32, f32)) {
use std::mem;
2014-09-12 18:20:15 +10:00
unsafe {
2014-11-06 01:22:21 +11:00
self.gl.ClearColor(color.0, color.1, color.2, color.3);
self.gl.Clear(gl::COLOR_BUFFER_BIT);
self.gl.EnableClientState(gl::VERTEX_ARRAY);
self.gl.EnableClientState(gl::COLOR_ARRAY);
self.gl.VertexPointer(2, gl::FLOAT, (mem::size_of::<f32>() * 5) as i32,
mem::transmute(VERTEX_DATA.as_ptr()));
self.gl.ColorPointer(3, gl::FLOAT, (mem::size_of::<f32>() * 5) as i32,
mem::transmute(VERTEX_DATA.as_ptr().offset(2)));
2014-11-06 01:22:21 +11:00
self.gl.DrawArrays(gl::TRIANGLES, 0, 3);
self.gl.DisableClientState(gl::VERTEX_ARRAY);
self.gl.DisableClientState(gl::COLOR_ARRAY);
self.gl.Flush();
2014-09-12 18:20:15 +10:00
}
}
}
2014-10-03 06:16:47 +10:00
#[cfg(target_os = "android")]
2015-01-04 09:11:59 +11:00
static VERTEX_DATA: [f32; 15] = [
2014-10-03 06:16:47 +10:00
-0.5, -0.5, 1.0, 0.0, 0.0,
0.0, 0.5, 0.0, 1.0, 0.0,
0.5, -0.5, 0.0, 0.0, 1.0
];