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In the engine I am currently programming I want to use a left-handed coordinate system for eye-space instead of the glFrustum standard right-handed one. Is that in anyway considered bad practice?

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    \$\begingroup\$ The typical projection matrix will flip the Z-axis and you will have a a right-handed coordinate space if you do this. But there is nothing wrong with it per-se, you just have to understand that polygon winding and other things will be backwards unless you also adjust your clip-space, NDC, window space coordinate systems using the projection matrix. \$\endgroup\$ – Andon M. Coleman Jan 7 '14 at 0:04
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No, it's fine, you may use whatever coordinate system and handedness you prefer.

Just be aware of what you are doing so you can make the appropriate adjustments and assumptions.

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