From 695f4cec3b8216577b9ce7e0b017e23b2eb19212 Mon Sep 17 00:00:00 2001 From: Kjetil Orbekk Date: Fri, 10 Jun 2016 23:45:06 -0400 Subject: OpenGL example using glium. --- rust/opengl/Cargo.toml | 8 +++++++ rust/opengl/default.nix | 10 ++++++++ rust/opengl/src/main.rs | 64 +++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 82 insertions(+) create mode 100644 rust/opengl/Cargo.toml create mode 100644 rust/opengl/default.nix create mode 100644 rust/opengl/src/main.rs (limited to 'rust/opengl') diff --git a/rust/opengl/Cargo.toml b/rust/opengl/Cargo.toml new file mode 100644 index 0000000..6407830 --- /dev/null +++ b/rust/opengl/Cargo.toml @@ -0,0 +1,8 @@ +[package] +name = "opengl" +version = "0.1.0" +authors = ["Kjetil Orbekk "] + +[dependencies] +glium = "0.14.0" + diff --git a/rust/opengl/default.nix b/rust/opengl/default.nix new file mode 100644 index 0000000..522e4d0 --- /dev/null +++ b/rust/opengl/default.nix @@ -0,0 +1,10 @@ +with import {}; +with xorg; +{ + allowUnfree = true; + games = stdenv.mkDerivation rec { + name = "opengl"; + buildInputs = [ libXi libX11 xorg.libXext xorg.libXcursor xorg.libXrandr xorg.libXxf86vm mesa openal ]; + LD_LIBRARY_PATH = lib.makeLibraryPath buildInputs; + }; +} diff --git a/rust/opengl/src/main.rs b/rust/opengl/src/main.rs new file mode 100644 index 0000000..667339b --- /dev/null +++ b/rust/opengl/src/main.rs @@ -0,0 +1,64 @@ +#[macro_use] +extern crate glium; + +fn main() { + use glium::DisplayBuild; + use glium::Surface; + + let display = glium::glutin::WindowBuilder::new() + .with_dimensions(1024, 768) + .with_title(format!("Hello world")) + .build_glium() + .unwrap(); + + // let display = glium::glutin::WindowBuilder::new().build_glium().unwrap(); + + #[derive(Copy, Clone)] + struct Vertex { + position: [f32; 2], + } + + implement_vertex!(Vertex, position); + + let vertex1 = Vertex { position: [-0.5, -0.5] }; + let vertex2 = Vertex { position: [ 0.0, 0.5] }; + let vertex3 = Vertex { position: [ 0.5, -0.25] }; + let shape = vec![vertex1, vertex2, vertex3]; + + let vertex_buffer = glium::VertexBuffer::new(&display, &shape).unwrap(); + let indices = glium::index::NoIndices(glium::index::PrimitiveType::TrianglesList); + + let vertex_shader_src = r#" + #version 140 + in vec2 position; + void main() { + gl_Position = vec4(position, 0.0, 1.0); + } + "#; + + let fragment_shader_src = r#" + #version 140 + out vec4 color; + void main() { + color = vec4(1.0, 0.0, 0.0, 1.0); + } + "#; + + let program = glium::Program::from_source(&display, vertex_shader_src, fragment_shader_src, None).unwrap(); + + loop { + let mut target = display.draw(); + target.clear_color(0.0, 0.0, 1.0, 1.0); + target.draw(&vertex_buffer, &indices, &program, &glium::uniforms::EmptyUniforms, + &Default::default()).unwrap(); + target.finish().unwrap(); + + for ev in display.poll_events() { + match ev { + glium::glutin::Event::Closed => return, + _ => () + } + } + } + +} -- cgit v1.2.3