Function textureMemoryBytes

Bytes described by every live texture and every live render target — §84's textureMemory (§83).

const before = textureMemoryBytes();
const atlas = new Texture({ width: 256, height: 256 });
textureMemoryBytes() - before; // === atlas.byteLength === 256 * 256 * 4
atlas.dispose();
textureMemoryBytes(); // === before
Copy

Reading it allocates nothing and costs two property reads and an addition, so a diagnostics overlay may sample it every frame.