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Textures in 16 bit integer format are sometimes used for displacement, bump and normal maps and can be exported by tools like Substance Painter. Without this patch, Cycles would promote those textures to single precision floating point, causing them to take up twice as much memory as needed. Reviewers: #cycles, brecht, sergey Reviewed By: #cycles, brecht, sergey Subscribers: sergey, dingto, #cycles Tags: #cycles Differential Revision: https://developer.blender.org/D3523