WebGPU: texture width and height are undefined when descriptor size is an array.

[torelode]

Version: Deno 1.41.1

This code fails:

const texture = device.createTexture({
  size: [256, 256],
  format: "rgba8unorm-srgb",
  usage: GPUTextureUsage.TEXTURE_BINDING,
});
console.assert(texture.width !== undefined);

This code works:

const texture = device.createTexture({
  size: { width: 256, height: 256 },
  format: "rgba8unorm-srgb",
  usage: GPUTextureUsage.TEXTURE_BINDING,
});
console.assert(texture.width !== undefined);

[Hajime-san]

Is this related?
gpuweb/types#147

[torelode]

Not really. The values of width and height are undefined when initialized from array. If you look at the code, the bug is trivial. It simply fetches width and height from the description object, assuming width and height were defined using named properties and not an array. It should be easy to fix with a ternary and Array.isArray(). Or better yet, copy the description object and canonicalize the properties in the process.