Thanks, that fixed it. I'm now using love.image.newImageData() in the side thread and wrapping that with love.graphics.newImage() in the main thread. I'm curious as to why passing ImageData is okay but passing Image is not. Also, the documentation on love.thread should probably be updated Never mind...

I have a simple setup where one thread loads images and the main thread fetches them as needed and draws them. (This is to ameliorate loading large images which causes framerate hiccups) However, the images all appear as blank white when drawn. The dimensions of the white rectangle correspond correc...