Mipmap.generateNextLevel

Regenerates a single mipmap level based on changes in the provided rectangle (expressed in level 0 coordinates). updateRect expressed in level 0 coordinates In general if you have several subparts of mipmaps to update, make sure a level is fully completed before computing the next one.

class Mipmap(COLOR)
nothrow @nogc nothrow @nogc
generateNextLevel
if (
is(COLOR == RGBA) ||
is(COLOR == L16)
||
is(COLOR == RGBA16)
)

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