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greggman/gist:8413752

Created January 14, 2014 05:58
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Compute the z buffer representations for a particular bit depth. Meant to be pasted into JavaScript console.
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gistfile1.js
res = 24; near = 0.1; far = 3500000; end = 1 << res; rangeInv = 1.0 / (near - far); j = []; last = 0; for(i = end - 16; i < end; ++i) {cz = i; cz = cz * 2.0 / (end - 1) - 1; z = near*far*rangeInv*2/(cz+(near+far)*rangeInv); j.push(" " + i + " = " + z.toFixed(3) + (last == 0 ? "" : (" range: " + (z - last).toFixed(3)))); last = z; }; console.log(j.join("\n") + "\n");
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