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Messages - Billy

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Hi!

I have to render several pictures with the same object/lights/viewing angle but with different textures.
ie.: the packshot of a shoe with red/blue/green/glittery shoelaces on a matte grey background

Is there any possibility to compute the whole scene once and then to only compute the new color and its reflections but not the unchanged parts of the picture in order to save a considerable amount of rendering time?

Thank you for your help!

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