mirror of
https://github.com/italicsjenga/winit-sonoma-fix.git
synced 2024-12-25 23:01:30 +11:00
62 lines
2.1 KiB
Rust
62 lines
2.1 KiB
Rust
extern crate glutin;
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extern crate libc;
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use glutin::*;
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use std::ptr;
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mod gl {
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pub use self::Gles2 as Gl;
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include!(concat!(env!("OUT_DIR"), "/test_gl_bindings.rs"));
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}
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use gl::types::*;
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#[cfg(target_os = "macos")]
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#[test]
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fn test_headless() {
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let width: i32 = 256;
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let height: i32 = 256;
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let window = glutin::HeadlessRendererBuilder::new(width as u32, height as u32).build().unwrap();
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unsafe { window.make_current() };
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let gl = gl::Gl::load_with(|symbol| window.get_proc_address(symbol) as *const _);
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unsafe {
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let mut framebuffer = 0;
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let mut texture = 0;
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gl.GenFramebuffers(1, &mut framebuffer);
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gl.BindFramebuffer(gl::FRAMEBUFFER, framebuffer);
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gl.GenTextures(1, &mut texture);
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gl.BindTexture(gl::TEXTURE_2D, texture);
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gl.TexParameteri(gl::TEXTURE_2D, gl::TEXTURE_MAG_FILTER, gl::LINEAR as i32);
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gl.TexParameteri(gl::TEXTURE_2D, gl::TEXTURE_MIN_FILTER, gl::LINEAR as i32);
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gl.TexImage2D(gl::TEXTURE_2D, 0, gl::RGBA as i32, width, height,
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0, gl::RGBA, gl::UNSIGNED_BYTE, ptr::null());
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gl.FramebufferTexture2D(gl::FRAMEBUFFER, gl::COLOR_ATTACHMENT0, gl::TEXTURE_2D, texture, 0);
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let status = gl.CheckFramebufferStatus(gl::FRAMEBUFFER);
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if status != gl::FRAMEBUFFER_COMPLETE {
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panic!("Error while creating the framebuffer");
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}
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gl.ClearColor(0.0, 1.0, 0.0, 1.0);
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gl.Clear(gl::COLOR_BUFFER_BIT);
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gl.Enable(gl::SCISSOR_TEST);
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gl.Scissor(1, 0, 1, 1);
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gl.ClearColor(1.0, 0.0, 0.0, 1.0);
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gl.Clear(gl::COLOR_BUFFER_BIT);
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let mut values: Vec<u8> = vec![0;(width*height*4) as usize];
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gl.ReadPixels(0, 0, width, height, gl::RGBA, gl::UNSIGNED_BYTE, values.as_mut_ptr() as *mut GLvoid);
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assert_eq!(values[0], 0);
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assert_eq!(values[1], 255);
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assert_eq!(values[2], 0);
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assert_eq!(values[3], 255);
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assert_eq!(values[4], 255);
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assert_eq!(values[5], 0);
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assert_eq!(values[6], 0);
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assert_eq!(values[7], 255);
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}
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}
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