@ChristerEricson @iquilezles @mmalex It doesn't. (Higher-order multidimensional derivatives are multilinear forms not matrices.)
@rygorous @mmalex @ChristerEricson @iquilezles "Looks sorta right!", etc.
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@cmuratori@rygorous@mmalex@ChristerEricson@iquilezles Aren't they all 0? That's what I get in my pixel and fragment shaders. -
@won3d@cmuratori@mmalex@ChristerEricson@iquilezles Yeah the real world is piecewise linear and don't let anyone tell you otherwise! - Show replies
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@cmuratori@mmalex@ChristerEricson@iquilezles Protip: graph your analytical derivs against numerically computed ones as sanity check.Thanks. Twitter will use this to make your timeline better. UndoUndo
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