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I have flipped the Y axis of a normal map to make it compatible with Unreal 4 but when i want to see how it looks in the Blender Render viewport the lighting is inverted. Is there an option to flip it in the viewport?

enter image description here

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2 Answers 2

Reset to default
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Invert the Y/green channel with RGB Curves

invert

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An easier way to fix it is to go to UV/Image Editor, select the normal texture, then Image, invert, flip green channel, save the image.

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