surfman/
info.rs

1//! OpenGL information.
2
3use crate::Gl;
4use glow::HasContext;
5
6/// The API (OpenGL or OpenGL ES).
7#[derive(Clone, Copy, Debug, PartialEq)]
8pub enum GLApi {
9    /// OpenGL (full or desktop OpenGL).
10    GL,
11    /// OpenGL ES (embedded OpenGL).
12    GLES,
13}
14
15/// Describes the OpenGL version that is requested when a context is created.
16///
17/// Since OpenGL and OpenGL ES have different version numbering schemes, the valid values here
18/// depend on the value of `Device::gl_api()`.
19#[derive(Clone, Copy, Debug, PartialEq)]
20pub struct GLVersion {
21    /// The major OpenGL version (e.g. 4 in 4.2).
22    pub major: u8,
23    /// The minor OpenGL version (e.g. 2 in 4.2).
24    pub minor: u8,
25}
26
27impl GLVersion {
28    /// Creates a GL version structure with the given major and minor version numbers.
29    #[inline]
30    pub fn new(major: u8, minor: u8) -> GLVersion {
31        GLVersion { major, minor }
32    }
33
34    #[allow(dead_code)]
35    pub(crate) fn current(gl: &Gl) -> GLVersion {
36        let version = gl.version();
37        Self {
38            major: version.major as u8,
39            minor: version.minor as u8,
40        }
41    }
42}
surfman/info.rs

surfman/
info.rs
