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Re: [Public WebGL] Re: s3tc compression and UNPACK_FLIP_Y_WEBGL

On Mon, Sep 10, 2012 at 11:23 PM, Jeff Russell <jeffdr@gmail.com> wrote:
Flipping, at the very least, is doable without decompressing/recompressing the image...
Yes, if you:

- invert the rows and
- for each row
  invert the order of the latter 4 bytes (the 2-bit bitmap)