Resources

Resources and address spaces

A resource is a declare, which is TypeScript for a value something else provides. The address space and the access mode are the wrapper type on the annotation: a storage binding a shader writes is storage<T, "read_write">, and every resource is a const.

WGSLTypeShade

@group(0) @binding(0) var<uniform> camera: Camera;

declare const camera: uniform<Camera>

@group(0) @binding(1) var<storage, read> src: array<f32>;

declare const src: storage<array<f32>>

@group(0) @binding(2) var<storage, read_write> dst: array<f32>;

declare const dst: storage<array<f32>, "read_write">

@group(0) @binding(3) var tex: texture_2d<f32>;

declare const tex: texture_2d<f32>

@group(0) @binding(4) var smp: sampler;

declare const smp: sampler

var<workgroup> tile: array<f32, 64>;

let tile: workgroup<array<f32, 64>>

var<private> seed: u32 = 7u;

let seed: u32 = 7

override tint: f32 = 0.85;

const tint: override<f32> = 0.85

There is no @group or @binding to write. The slot index is the source order of the declare in the file, and the WGSL above shows what that came out as. A texture or a sampler takes the next slot the same way.

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