Use non-power-of-two (NPOT) textures when appropriate
No performance penalty
Saves memory
无二次幂限制的纹理(Non-Power-of-Two Textures)
OpenGL仅支持分辨率为2mx2n的纹理。但现在我们可以使用“无二次幂限制”的纹理。
OpenGL only supports textures with 2m x 2n resolution.But "Non-Power-of-Two" textures can be useful.
与之匹配的屏幕分辨率或包围区域不一定等于二次幂(800x600)
Matching some screen resolution or bounding region that is not necessarily a power of two (800x600)
消除限制的w/WGL_NV_render_texture_rectangle扩展指令:
Restriction lifted w/ WGL_NV_render_texture_rectangle extension:
无二次幂限制的纹理仅有少许差异
Non-power-of-two textures BUT some differences
纹理坐标贴图的差异
Texture coordinates map differently
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