Macro texture 

macro_rules! texture {
    { $struct:ident {
        usage: $( $usage:ident )|+ ,
        dimension: $dimension:ident,
        sample_type: $sample:ident,
    } } => { ... };
}

Define a type of texture - not its size or format, but a set of properties.

More specifically, its wgpu::TextureUsages, wgpu::TextureViewDimension, & the binding’s wgpu::TextureSampleType as simplified under sample_type.
The texture’s size & format are defined on creation of the texture dynamically.

This struct also comes with a view of all layers, so you can bind to it directly.

texture! { Texture {
    usage: COPY_DST | TEXTURE_BINDING,
    dimension: D2,
    sample_type: FLOAT,
} }

let texture: Texture = context.new_texture((64, 64, 1), wgpu::TextureFormat::Rgba8Unorm);

The texture is made with 1 mip level and sample count, this will probably eventually be customizable but I haven’t made anything complex enough yet to figure out how that works.