javascript - Are WebGL objects garbage collected?

Question

In JavaScript memory that I allocated (e.g. an ArrayBuffer) gets freed up when I don't have any reference to it anymore by the GC as I understood that right?

WebGL objects like Buffers or Textures are associated with a memory block on the GPU as allocated by gl.bufferData() or gl.textureImage2D().

I'm wondering: if I give up my last reference to a WebGLTexture or WebGLBuffer object, does it get garbage collected with its GPU memory block freed by the JavaScript VM automatically?

Answer 1

Yes

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From spec

Note that underlying GL object will be automatically marked for deletion when the JS object is destroyed

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But you should notice that the object would probably not destroyed at the time you give up the last reference, so it's still a good practice to call deleteBuffer.