the following line disables mipmap hardware generation for non power-of-two texture sizes in the 1.10 branch (d3d9):
Code: Select all
// Hacky override - many (all?) cards seem to not be able to autogen on // textures which are not a power of two // Can we even mipmap on 3D textures? Well if ((mWidth & mWidth-1) || (mHeight & mHeight-1) || (mDepth & mDepth-1)) return false;
However, the manual creation of mipmaps (which is caused by this line) seems to be the most expansive task for me when loading larger textures (e.g. 1364x638 and beyond). Note: I didn't chose non-power-of-two textures... I just have to deal with it...
I removed this check so mipmaps get hw created for non-power-of-two sizes and it seems to work perfectly for me.
System is: Win10 + Ogre 1.10 + Nvidia GTX 660
Is it possible this exclusion for non-power-of-two textures is rather obsolete by now?
Due to its great influence on loading time, I would like to suggest:
1) Consider enabling hw generation (=remove the exclusion). In case any target GPU past e.g. 2010 can do it just fine?
2) May be provide a config option to enable or disable hw mipmaps for non-power-of-two textures..