self.addEventListener("message", async function (event) { try { const offscreen = event.data.offscreen; const context = offscreen.getContext("webgpu"); const adapter = await navigator.gpu.requestAdapter(); const device = await adapter.requestDevice(); const swapChainFormat = context.getPreferredFormat(adapter); context.configure({ device, format: swapChainFormat, size: { width: 100, height: 100, depth: 1 }, }); const texture = context.getCurrentTexture(); self.postMessage([ { value: texture !== undefined, message: "texture !== undefined", }, ]); } catch (e) { self.postMessage([ { value: false, message: "Unhandled exception " + e, }, ]); } });