mirror of
https://github.com/italicsjenga/winit-sonoma-fix.git
synced 2024-10-18 07:51:33 +11:00
07c8154cb7
* Adding dependencies * Replacing `i8` with `c_char` ot `_` (since `c_char` can be unsigned on some platforms, aarch64 is one of them)
85 lines
2.3 KiB
Rust
85 lines
2.3 KiB
Rust
#![cfg(feature = "window")]
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use std::ffi::CStr;
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use glutin;
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#[cfg(not(target_os = "android"))]
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mod gl {
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include!(concat!(env!("OUT_DIR"), "/test_gl_bindings.rs"));
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}
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#[cfg(target_os = "android")]
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mod gl {
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pub use self::Gles1 as Gl;
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include!(concat!(env!("OUT_DIR"), "/test_gles1_bindings.rs"));
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}
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pub struct Context {
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gl: gl::Gl
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}
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pub fn load(window: &glutin::Window) -> Context {
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let gl = gl::Gl::load(window);
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let version = unsafe {
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let data = CStr::from_ptr(gl.GetString(gl::VERSION) as *const _).to_bytes().to_vec();
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String::from_utf8(data).unwrap()
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};
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println!("OpenGL version {}", version);
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Context { gl: gl }
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}
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impl Context {
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#[cfg(not(target_os = "android"))]
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pub fn draw_frame(&self, color: (f32, f32, f32, f32)) {
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unsafe {
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self.gl.ClearColor(color.0, color.1, color.2, color.3);
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self.gl.Clear(gl::COLOR_BUFFER_BIT);
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self.gl.Begin(gl::TRIANGLES);
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self.gl.Color3f(1.0, 0.0, 0.0);
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self.gl.Vertex2f(-0.5, -0.5);
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self.gl.Color3f(0.0, 1.0, 0.0);
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self.gl.Vertex2f(0.0, 0.5);
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self.gl.Color3f(0.0, 0.0, 1.0);
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self.gl.Vertex2f(0.5, -0.5);
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self.gl.End();
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self.gl.Flush();
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}
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}
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#[cfg(target_os = "android")]
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pub fn draw_frame(&self, color: (f32, f32, f32, f32)) {
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use std::mem;
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unsafe {
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self.gl.ClearColor(color.0, color.1, color.2, color.3);
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self.gl.Clear(gl::COLOR_BUFFER_BIT);
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self.gl.EnableClientState(gl::VERTEX_ARRAY);
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self.gl.EnableClientState(gl::COLOR_ARRAY);
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self.gl.VertexPointer(2, gl::FLOAT, (mem::size_of::<f32>() * 5) as i32,
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mem::transmute(VERTEX_DATA.as_ptr()));
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self.gl.ColorPointer(3, gl::FLOAT, (mem::size_of::<f32>() * 5) as i32,
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mem::transmute(VERTEX_DATA.as_ptr().offset(2)));
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self.gl.DrawArrays(gl::TRIANGLES, 0, 3);
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self.gl.DisableClientState(gl::VERTEX_ARRAY);
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self.gl.DisableClientState(gl::COLOR_ARRAY);
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self.gl.Flush();
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}
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}
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}
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#[cfg(target_os = "android")]
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static VERTEX_DATA: [f32; 15] = [
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-0.5, -0.5, 1.0, 0.0, 0.0,
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0.0, 0.5, 0.0, 1.0, 0.0,
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0.5, -0.5, 0.0, 0.0, 1.0
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];
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