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 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127
use bytemuck::{Pod, Zeroable}; pub use crevice_derive::AsStd140; pub unsafe trait Std140: Copy + Zeroable + Pod { const ALIGNMENT: usize; } pub trait AsStd140 { type Std140Type: Std140; fn as_std140(&self) -> Self::Std140Type; } impl<T> AsStd140 for T where T: Std140, { type Std140Type = Self; fn as_std140(&self) -> Self { *self } } unsafe impl Std140 for f32 { const ALIGNMENT: usize = 4; } unsafe impl Std140 for f64 { const ALIGNMENT: usize = 8; } unsafe impl Std140 for i32 { const ALIGNMENT: usize = 4; } unsafe impl Std140 for u32 { const ALIGNMENT: usize = 4; } #[derive(Debug, Clone, Copy)] pub struct Vec2 { pub x: f32, pub y: f32, } unsafe impl Zeroable for Vec2 {} unsafe impl Pod for Vec2 {} unsafe impl Std140 for Vec2 { const ALIGNMENT: usize = 8; } #[derive(Debug, Clone, Copy)] pub struct Vec3 { pub x: f32, pub y: f32, pub z: f32, } unsafe impl Zeroable for Vec3 {} unsafe impl Pod for Vec3 {} unsafe impl Std140 for Vec3 { const ALIGNMENT: usize = 16; } #[derive(Debug, Clone, Copy)] pub struct Vec4 { pub x: f32, pub y: f32, pub z: f32, pub w: f32, } unsafe impl Zeroable for Vec4 {} unsafe impl Pod for Vec4 {} unsafe impl Std140 for Vec4 { const ALIGNMENT: usize = 16; } #[derive(Debug, Clone, Copy)] pub struct Mat2 { pub x: Vec2, pub _pad_y: [f32; 2], pub y: Vec2, } unsafe impl Zeroable for Mat2 {} unsafe impl Pod for Mat2 {} unsafe impl Std140 for Mat2 { const ALIGNMENT: usize = 16; } #[derive(Debug, Clone, Copy)] pub struct Mat3 { pub x: Vec3, pub _pad_y: f32, pub y: Vec3, pub _pad_z: f32, pub z: Vec3, } unsafe impl Zeroable for Mat3 {} unsafe impl Pod for Mat3 {} unsafe impl Std140 for Mat3 { const ALIGNMENT: usize = 16; } #[derive(Debug, Clone, Copy)] pub struct Mat4 { pub x: Vec4, pub y: Vec4, pub z: Vec4, pub w: Vec4, } unsafe impl Zeroable for Mat4 {} unsafe impl Pod for Mat4 {} unsafe impl Std140 for Mat4 { const ALIGNMENT: usize = 16; }