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Better hmin/hmax algorithms for SSE/AVX2 #510

Merged
merged 2 commits into from
Nov 4, 2024
Merged

Better hmin/hmax algorithms for SSE/AVX2 #510

merged 2 commits into from
Nov 4, 2024

Commits on Nov 1, 2024

  1. Better hmin/hmax algorithms for SSE/AVX2 

    Use a formulation that automatically produces the same result
in all lanes, avoiding a separate broadcast step.

The same approach would work with floats in principle, but it's
not guaranteed to give the same result in all lanes when NaNs
are involved (due to the way MINPS/MAXPS are defined), so leave
the float versions alone for now.

About 1% encode time reduction encoding a 8192x8192 test texture
at 6x6 -thorough on a Ryzen 7950X3D.
    Fabian Giesen committed Nov 1, 2024
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Commits on Nov 4, 2024

  1. Merge branch 'main' into better-reduction

    @solidpixel
    solidpixel authored Nov 4, 2024
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