New version!
Now I’ve managed to port two blazing fast bicubic shaders described here: cubic shaders in 4 samples only!
Added:
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b-spline-fast.cg (a blazing fast bicubic shader which only needs 4 texture fetches! It’s at least 3x faster than current bicubic-fast.cg shader) ;
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catmull-rom-fast.cg (it needs only 9 texture fetches! It’s faster than bicubic-fast.cg)
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Added an optimized super-xbr-small-details-sharper-fast preset (now genesis-plus runs at full speed with this shader combo!)