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Does object size affect performance?
Will making objects really small and moving the camera closer make the game run faster?
And if so are there any drawbacks?
Answer by codesennin · Feb 20, 2011 at 06:54 PM
Game performance is based on the number of vertices each object has so given that they have the same number of vertices and you just change the scale then the performance should be the same.
As for the camera, performance is related to the number of visible objects at a time and not on the scale of objects. ie seeing 5 objects out of 10 will yield a better performance from a far away camera that shows everything at once.
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This is not entirely true with modern graphics card. Fill rate and shader complexity has a much bigger impact than vertex count. That said, as long as the scene looks the same to the camera, it will perform the same, no matter the scale.
Vertex count was a mere example of what could impact performance, of course there are other reasons that it may get a slower framerate but Scale as the OP asks, is not one.
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