Attribute Macro gl_headless 

#[gl_headless]

Creates a headless OpenGL context, that is valid throughout the scope of the function.

See examples in the crate root.

Attributes

• version = "3.3": Specify the OpenGL version, e.g.: #[gl_headless(version = "3.3")]

Example

[dependencies]
gl = "0.14"
gl-headless = "0.2"

use gl_headless::gl_headless;

#[gl_headless]
unsafe fn main() {
    let (mut major, mut minor) = (0, 0);
    gl::GetIntegerv(gl::MAJOR_VERSION, &mut major);
    gl::GetIntegerv(gl::MINOR_VERSION, &mut minor);
    println!("OpenGL {major}.{minor}");
}