Leveraging Multi-Texture
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Store diffuse maps in lower resolution and use
multitexture to save memory
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Four Full Res (256 x 256) 4-bit =
128kb
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Full Res Base + four 1/4 res lightmaps =
40kb
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Useful when you have lots of similar (yet unique) textures.
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Dynamic light maps
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Day/Night lighting cycles
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Fire or other dynamic light sources