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javascript - Are WebGL objects garbage collected?

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?

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Yes


From spec

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


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.


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