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Does textures allocate memory that is 2^n*2^n? for a certain n? or can there be a texture of size of 1000*1000?
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Texture memory
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I'm not sure I follow you.
Hardware is, I believe, still optimised to deal with power-of-two textures, but there is support on some graphics hardware to do non-power-of-two textures (GeForce4 and up from nVidia I believe, and I think the 9700 & up from ATi). In Direct3D support for this is part of the caps structure, under D3DPTEXTURECAPS_NONPOW2CONDITIONAL and possibly related is D3DPTEXTURECAPS_POW2.
-Mezz
Hardware is, I believe, still optimised to deal with power-of-two textures, but there is support on some graphics hardware to do non-power-of-two textures (GeForce4 and up from nVidia I believe, and I think the 9700 & up from ATi). In Direct3D support for this is part of the caps structure, under D3DPTEXTURECAPS_NONPOW2CONDITIONAL and possibly related is D3DPTEXTURECAPS_POW2.
-Mezz
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