58 lines
1.7 KiB
Rust
58 lines
1.7 KiB
Rust
use glium::winit::event::{Event, WindowEvent};
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use glium::Surface;
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#[derive(Copy, Clone)]
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struct Vertex {
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position: [f32; 2],
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}
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implement_vertex!(Vertex, position);
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#[macro_use]
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extern crate glium;
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fn main() {
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let event_loop = glium::winit::event_loop::EventLoopBuilder::new().build().expect("event loop building");
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let (_window, display) = glium::backend::glutin::SimpleWindowBuilder::new().build(&event_loop);
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let vertex1 = Vertex { position: [ -0.5, -0.5 ] };
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let vertex2 = Vertex { position: [ 0.0, 0.5 ] };
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let vertex3 = Vertex { position: [ 0.5, -0.25 ] };
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let shape = vec![vertex1, vertex2, vertex3];
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let vertex_buffer = glium::VertexBuffer::new(&display, &shape).unwrap();
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let indices = glium::index::NoIndices(glium::index::PrimitiveType::TrianglesList);
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let vertex_shader_src = r#"
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in vec2 position;
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void main() {
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gl_Position = vec4(position, 0.0, 1.0);
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}
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"#;
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let fragment_shader_src = r#"
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out vec4 color;
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void main() {
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color = vec4(1.0, 0.0, 0.0, 1.0);
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}
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"#;
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let program = glium::Program::from_source(&display, vertex_shader_src, fragment_shader_src, None).unwrap();
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let mut frame = display.draw();
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frame.clear_color(0.0, 0.0, 0.0, 1.0);
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frame.draw(&vertex_buffer, &indices, &program, &glium::uniforms::EmptyUniforms,
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&Default::default()).unwrap();
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frame.finish().unwrap();
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let _ = event_loop.run(move |event, window_target| {
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match event {
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Event::WindowEvent { event, .. } => match event {
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WindowEvent::CloseRequested => window_target.exit(),
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_ => (),
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},
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_ => (),
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};
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});
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}
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