Trait AttributeDescriptor

Source

pub trait AttributeDescriptor {
    // Required method
    fn get_attributes() -> &'static [Attribute];
}

Expand description

Needed to be implemented for Vertex for using it in Mesh

§Examples

use std::mem::offset_of;
use crystal_api::mesh::{AttributeDescriptor, Attribute};

type Vec3 = [f32; 3];
type Vec2 = [f32; 2];

#[repr(C)]
#[derive(Clone, Copy, Default)]
pub struct VertexTexture {
    pos: Vec3,
    uv: Vec2,
}
impl AttributeDescriptor for VertexTexture {
    fn get_attributes() -> &'static [Attribute] {
        &[
            Attribute {
                size: size_of::<Vec3>(),
                offset: offset_of!(Self, pos),
            },
            Attribute {
                size: size_of::<Vec2>(),
                offset: offset_of!(Self, uv),
            },
        ]
    }
}