const_shader_layout 0.3.3

Compile-time checks to ensure structs conform to WGSL's memory layout rules
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25

use const_shader_layout::{impl_shader_layout_compat, shader_layout, shader_layout_compat};

#[derive(Clone, Copy)]
struct Vec2ArrayLen3([f32; 6]);

impl_shader_layout_compat!(8, 16, 16 * 3, Vec2ArrayLen3);

shader_layout! {
    pub struct S {
        a1: glam::Vec2,
        a2: Vec2ArrayLen3,
        a3: glam::Vec3,
        p1: f32,
    }
}

shader_layout_compat! {
    //~^ ERROR: Failed to impl `ShaderLayoutCompat`: field `Compat::a2` (`Vec2ArrayLen3`) size (24) must be `SIZE_COMPAT` (48) due to uniform layout constraints
    pub struct Compat {
        a1: glam::Vec2,
        a2: Vec2ArrayLen3,
        a3: glam::Vec3,
        p3: f32,
    }
}