Struct GlVersion

pub struct GlVersion {
    pub major: u16,
    pub minor: u16,
    pub is_gles: bool,
}

Fields

major: u16

minor: u16

is_gles: bool

Implementations

impl GlVersion

pub const fn gl(major: u16, minor: u16) -> Self

pub const fn gles(major: u16, minor: u16) -> Self

pub fn read<G: HasContext>(gl: &G) -> Self

pub fn parse(gl_version_string: &str) -> Self

Parse the OpenGL version from the version string queried from the driver via the GL_VERSION enum.

Version strings are documented to be in the form <major>.<minor>[.<release>][ <vendor specific information>] for full-fat OpenGL, and OpenGL ES <major>.<minor>[.<release>][ <vendor specific information>] for OpenGL ES.

Examples based on strings found in the wild:

let version = GlVersion::parse("4.6.0 NVIDIA 465.27");
assert!(!version.is_gles);
assert_eq!(version.major, 4);
assert_eq!(version.minor, 6);
let version = GlVersion::parse("OpenGL ES 3.2 NVIDIA 465.27");
assert!(version.is_gles);
assert_eq!(version.major, 3);
assert_eq!(version.minor, 2);

pub fn debug_message_insert_support(self) -> bool

Debug messages are provided by glDebugMessageInsert, which is only present in OpenGL >= 4.3

pub fn bind_vertex_array_support(self) -> bool

Vertex array binding is provided by glBindVertexArray, which is not present in OpenGL (ES) <3.0

pub fn vertex_offset_support(self) -> bool

Vertex offset support is provided by glDrawElementsBaseVertex, which is only present from OpenGL 3.2 and above.

pub fn bind_sampler_support(self) -> bool

Separate binding of sampler (glBindSampler) is supported from OpenGL 3.2 or ES 3.0

pub fn clip_origin_support(self) -> bool

Setting the clip origin (GL_CLIP_ORIGIN) is suppoted from OpenGL 4.5

pub fn polygon_mode_support(self) -> bool

pub fn primitive_restart_support(self) -> bool

Trait Implementations

impl Clone for GlVersion

fn clone(&self) -> GlVersion

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl PartialEq for GlVersion

fn eq(&self, other: &GlVersion) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for GlVersion

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for GlVersion

impl Eq for GlVersion

impl StructuralPartialEq for GlVersion