comments

src/main.rs

@@ -138,6 +138,7 @@ fn training() {
 		usage: Some(wgpu::TextureUsages::RENDER_ATTACHMENT | wgpu::TextureUsages::TEXTURE_BINDING),
 		..Default::default()
 	});
+	// bytes_per_row needs to be a multiple of 256.
 	let stride = (size.x * size_of::<f32>() as u32).next_multiple_of(256);
 	let mut texture_data = Vec::<u8>::with_capacity((stride * size.y) as usize);
 	let output_staging_buffer = device.create_buffer(&wgpu::BufferDescriptor {
@@ -258,8 +259,7 @@ fn training() {
 				buffer: &output_staging_buffer,
 				layout: wgpu::TexelCopyBufferLayout {
 					offset: 0,
-					// This needs to be a multiple of 256. Normally we would need to pad
-					// it but we here know it will work out anyways.
+					// This needs to be a multiple of 256.
 					bytes_per_row: Some(stride as u32),
 					rows_per_image: Some(size.y),
 				},