WasmGPU.frameArena.alloc¶
Summary¶
WasmGPU.frameArena.alloc allocates raw bytes from the global frame arena.
This is the low-level pointer API used when you need custom byte layouts.
Memory becomes invalid after frameArena.reset(), the next WasmGPU.run() frame reset, or a standalone WasmGPU.render() call that resets the frame arena.
Syntax¶
WasmGPU.frameArena.alloc(bytes: number, align?: number): number
const ptr = wgpu.frameArena.alloc(bytes, align);
Parameters¶
| Name | Type | Required | Description |
|---|---|---|---|
bytes |
number |
Yes | Number of bytes to reserve from the frame arena. |
align |
number |
No | Alignment in bytes, default 16. |
Returns¶
number - Wasm pointer to the allocated byte region.
Notes¶
- This method returns a raw pointer, not a
WasmSlice. - Use
wgpu.driver.view(...)orwgpu.driver.viewOn(...)when you need a typed view over the allocated bytes. - If you want epoch-checked slice objects instead of raw pointers, use
wgpu.driver.frame.allocU8(...).
Example¶
const canvas = document.querySelector("canvas");
const wgpu = await WasmGPU.create(canvas);
const ptr = wgpu.frameArena.alloc(4096, 32);
const view = wgpu.driver.view(Uint8Array, ptr, 4096);
view.fill(0);