GPUAdapter: limits property
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The limits
read-only property of the
GPUAdapter
interface returns a GPUSupportedLimits
object that describes the limits supported by the adapter.
You should note that, rather than reporting the exact limits of each GPU, browsers will likely report different tier values of different limits to reduce the unique information available to drive-by fingerprinting. For example, the tiers of a certain limit might be 2048, 8192, and 32768. If your GPU's actual limit is 16384, the browser will still report 8192.
Given that different browsers will handle this differently and the tier values may change over time, it is hard to provide an accurate account of what limit values to expect — thorough testing is advised.
Value
A GPUSupportedLimits
object instance.
Examples
In the following code we query the GPUAdapter.limits
value of maxBindGroups
to see if it is equal to or greater than 6. Our theoretical example app ideally needs 6 bind groups, so if the returned value is >= 6, we add a maximum limit of 6 to the requiredLimits
object, and request a device with that limit requirement using GPUAdapter.requestDevice()
:
js
async function init() {
if (!navigator.gpu) {
throw Error("WebGPU not supported.");
}
const adapter = await navigator.gpu.requestAdapter();
if (!adapter) {
throw Error("Couldn't request WebGPU adapter.");
}
const requiredLimits = {};
// App ideally needs 6 bind groups, so we'll try to request what the app needs
if (adapter.limits.maxBindGroups >= 6) {
requiredLimits.maxBindGroups = 6;
}
const device = await adapter.requestDevice({
requiredLimits,
});
// ...
}
Specifications
Specification |
---|
WebGPU # dom-gpuadapter-limits |
Browser compatibility
BCD tables only load in the browser
See also
- The WebGPU API