Generating mip maps

libmipflooding can also be used to directly generate mip maps.

generate_mips()

All APIs

Generates intermediate mips. These still have “holes” (i.e. channels outside of coverage are 0, for images with an alpha channel this means transparent). Note: The Python wrapper fills these holes through compositing by default.

For images where the alpha channel is used as the coverage mask, the output will be equivalent to “coverage-preserving alpha mipmapping”, i.e. alpha will always be 1 for pixels inside of coverage. This can be changed by setting``scale_alpha_unweighted`` to true.

composite_mips()

C++/C API

Outputs mip maps without holes by compositing mip levels into each other. Use a channel bit mask to preserve alpha.