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/// <reference types="@webgpu/types" />
import { assert } from './util.js';
/**
* Finds and returns the `navigator.gpu` object (or equivalent, for non-browser implementations).
* Throws an exception if not found.
*/
function defaultGPUProvider(): GPU {
assert(
typeof navigator !== 'undefined' && navigator.gpu !== undefined,
'No WebGPU implementation found'
);
return navigator.gpu;
}
/**
* GPUProvider is a function that creates and returns a new GPU instance.
* May throw an exception if a GPU cannot be created.
*/
export type GPUProvider = () => GPU;
let gpuProvider: GPUProvider = defaultGPUProvider;
/**
* Sets the function to create and return a new GPU instance.
*/
export function setGPUProvider(provider: GPUProvider) {
assert(impl === undefined, 'setGPUProvider() should not be after getGPU()');
gpuProvider = provider;
}
let impl: GPU | undefined = undefined;
let defaultRequestAdapterOptions: GPURequestAdapterOptions | undefined;
export function setDefaultRequestAdapterOptions(options: GPURequestAdapterOptions) {
if (impl) {
throw new Error('must call setDefaultRequestAdapterOptions before getGPU');
}
defaultRequestAdapterOptions = { ...options };
}
/**
* Finds and returns the `navigator.gpu` object (or equivalent, for non-browser implementations).
* Throws an exception if not found.
*/
export function getGPU(): GPU {
if (impl) {
return impl;
}
impl = gpuProvider();
if (defaultRequestAdapterOptions) {
// eslint-disable-next-line @typescript-eslint/unbound-method
const oldFn = impl.requestAdapter;
impl.requestAdapter = function (
options?: GPURequestAdapterOptions
): Promise<GPUAdapter | null> {
const promise = oldFn.call(this, { ...defaultRequestAdapterOptions, ...(options || {}) });
void promise.then(async adapter => {
if (adapter) {
const info = await adapter.requestAdapterInfo();
// eslint-disable-next-line no-console
console.log(info);
}
});
return promise;
};
}
return impl;
}
|
