Create gpu.js

gpu.js

@@ -0,0 +1,20 @@
+export async function initGPU(width, height) {
+  if (!navigator.gpu) {
+    throw new Error("WebGPU not supported");
+  }
+
+  const adapter = await navigator.gpu.requestAdapter();
+  const device = await adapter.requestDevice();
+
+  const size = width * height * 4;
+
+  const buffer = device.createBuffer({
+    size,
+    usage:
+      GPUBufferUsage.STORAGE |
+      GPUBufferUsage.COPY_DST |
+      GPUBufferUsage.COPY_SRC
+  });
+
+  return { device, buffer };
+}