Update bytemuck and remove zerocopy in iced_wgpu

wgpu/Cargo.toml

@@ -16,13 +16,15 @@ default_system_font = ["iced_graphics/font-source"]
 wgpu = "0.6"
 wgpu_glyph = "0.10"
 glyph_brush = "0.7"
-zerocopy = "0.3"
-bytemuck = "1.2"
 raw-window-handle = "0.3"
 log = "0.4"
 guillotiere = "0.6"
 futures = "0.3"
 
+[dependencies.bytemuck]
+version = "1.4"
+features = ["derive"]
+
 [dependencies.iced_native]
 version = "0.2"
 path = "../native"

wgpu/src/image.rs

@@ -13,7 +13,8 @@ use iced_graphics::layer;
 use iced_native::Rectangle;
 use std::cell::RefCell;
 use std::mem;
-use zerocopy::AsBytes;
+
+use bytemuck::{Pod, Zeroable};
 
 #[cfg(feature = "image")]
 use iced_native::image;
@@ -219,14 +220,14 @@ impl Pipeline {
         let vertices =
             device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
                 label: Some("iced_wgpu::image vertex buffer"),
-                contents: QUAD_VERTS.as_bytes(),
+                contents: bytemuck::cast_slice(&QUAD_VERTS),
                 usage: wgpu::BufferUsage::VERTEX,
             });
 
         let indices =
             device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
                 label: Some("iced_wgpu::image index buffer"),
-                contents: QUAD_INDICES.as_bytes(),
+                contents: bytemuck::cast_slice(&QUAD_INDICES),
                 usage: wgpu::BufferUsage::INDEX,
             });
 
@@ -385,12 +386,9 @@ impl Pipeline {
                 device,
             );
 
-            uniforms_buffer.copy_from_slice(
-                Uniforms {
-                    transform: transformation.into(),
-                }
-                .as_bytes(),
-            );
+            uniforms_buffer.copy_from_slice(bytemuck::bytes_of(&Uniforms {
+                transform: transformation.into(),
+            }));
         }
 
         let mut i = 0;
@@ -411,8 +409,9 @@ impl Pipeline {
                 device,
             );
 
-            instances_buffer
-                .copy_from_slice(instances[i..i + amount].as_bytes());
+            instances_buffer.copy_from_slice(bytemuck::cast_slice(
+                &instances[i..i + amount],
+            ));
 
             let mut render_pass =
                 encoder.begin_render_pass(&wgpu::RenderPassDescriptor {
@@ -463,7 +462,7 @@ impl Pipeline {
 }
 
 #[repr(C)]
-#[derive(Clone, Copy, AsBytes)]
+#[derive(Clone, Copy, Zeroable, Pod)]
 pub struct Vertex {
     _position: [f32; 2],
 }
@@ -486,7 +485,7 @@ const QUAD_VERTS: [Vertex; 4] = [
 ];
 
 #[repr(C)]
-#[derive(Debug, Clone, Copy, AsBytes)]
+#[derive(Debug, Clone, Copy, Zeroable, Pod)]
 struct Instance {
     _position: [f32; 2],
     _size: [f32; 2],
@@ -500,7 +499,7 @@ impl Instance {
 }
 
 #[repr(C)]
-#[derive(Debug, Clone, Copy, AsBytes)]
+#[derive(Debug, Clone, Copy, Zeroable, Pod)]
 struct Uniforms {
     transform: [f32; 16],
 }

wgpu/src/image/vector.rs

@@ -2,8 +2,6 @@ use crate::image::atlas::{self, Atlas};
 use iced_native::svg;
 use std::collections::{HashMap, HashSet};
 
-use zerocopy::AsBytes;
-
 pub enum Svg {
     Loaded(resvg::usvg::Tree),
     NotFound,
@@ -119,7 +117,7 @@ impl Cache {
                 let allocation = texture_atlas.upload(
                     width,
                     height,
-                    canvas.get_data().as_bytes(),
+                    bytemuck::cast_slice(canvas.get_data()),
                     device,
                     encoder,
                 )?;

wgpu/src/quad.rs

@@ -2,9 +2,9 @@ use crate::Transformation;
 use iced_graphics::layer;
 use iced_native::Rectangle;
 
+use bytemuck::{Pod, Zeroable};
 use std::mem;
 use wgpu::util::DeviceExt;
-use zerocopy::AsBytes;
 
 #[derive(Debug)]
 pub struct Pipeline {
@@ -156,14 +156,14 @@ impl Pipeline {
         let vertices =
             device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
                 label: Some("iced_wgpu::quad vertex buffer"),
-                contents: QUAD_VERTS.as_bytes(),
+                contents: bytemuck::cast_slice(&QUAD_VERTS),
                 usage: wgpu::BufferUsage::VERTEX,
             });
 
         let indices =
             device.create_buffer_init(&wgpu::util::BufferInitDescriptor {
                 label: Some("iced_wgpu::quad index buffer"),
-                contents: QUAD_INDICES.as_bytes(),
+                contents: bytemuck::cast_slice(&QUAD_INDICES),
                 usage: wgpu::BufferUsage::INDEX,
             });
 
@@ -207,7 +207,7 @@ impl Pipeline {
                 device,
             );
 
-            constants_buffer.copy_from_slice(uniforms.as_bytes());
+            constants_buffer.copy_from_slice(bytemuck::bytes_of(&uniforms));
         }
 
         let mut i = 0;
@@ -271,7 +271,7 @@ impl Pipeline {
 }
 
 #[repr(C)]
-#[derive(Clone, Copy, AsBytes)]
+#[derive(Clone, Copy, Zeroable, Pod)]
 pub struct Vertex {
     _position: [f32; 2],
 }
@@ -296,7 +296,7 @@ const QUAD_VERTS: [Vertex; 4] = [
 const MAX_INSTANCES: usize = 100_000;
 
 #[repr(C)]
-#[derive(Debug, Clone, Copy, AsBytes)]
+#[derive(Debug, Clone, Copy, Zeroable, Pod)]
 struct Uniforms {
     transform: [f32; 16],
     scale: f32,

wgpu/src/triangle.rs

@@ -1,8 +1,9 @@
 //! Draw meshes of triangles.
 use crate::{settings, Transformation};
 use iced_graphics::layer;
+
+use bytemuck::{Pod, Zeroable};
 use std::mem;
-use zerocopy::AsBytes;
 
 pub use iced_graphics::triangle::{Mesh2D, Vertex2D};
 
@@ -322,7 +323,7 @@ impl Pipeline {
             }
         }
 
-        let uniforms = uniforms.as_bytes();
+        let uniforms = bytemuck::cast_slice(&uniforms);
 
         if let Some(uniforms_size) =
             wgpu::BufferSize::new(uniforms.len() as u64)
@@ -409,7 +410,7 @@ impl Pipeline {
 }
 
 #[repr(C)]
-#[derive(Debug, Clone, Copy, AsBytes)]
+#[derive(Debug, Clone, Copy, Zeroable, Pod)]
 struct Uniforms {
     transform: [f32; 16],
     // We need to align this to 256 bytes to please `wgpu`...