[Value] D3DPTEXTURECAPS_POW2 [Meaning] 
If D3DPTEXTURECAPS_NONPOW2CONDITIONAL is not set, all textures must have widths and heights specified as powers of two. This requirement does not apply to either cube textures or volume textures. If D3DPTEXTURECAPS_NONPOW2CONDITIONAL is also set, conditionally supports the use of 2D textures with dimensions that are not powers of two. See D3DPTEXTURECAPS_NONPOW2CONDITIONAL description. If this flag is not set, and D3DPTEXTURECAPS_NONPOW2CONDITIONAL is also not set, then unconditional support is provided for 2D textures with dimensions that are not powers of two.