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Creating .hdr

Vijay Kumar

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short answer : you can't :) (or you can have an hdr file, but it will be ineffective).

An hdr file contain multiple lighting information for each pixel, so if you use jpg for source texture, you'll not be able to generate missing information, the hdr file will be useless.

If you want a true hdr file : buy one, shoot one IRL or generate one in a 3d precalculated scene.

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