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Re: [ft-devel] ttinterp.c optimization
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From: |
Werner LEMBERG |
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Subject: |
Re: [ft-devel] ttinterp.c optimization |
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Date: |
Wed, 27 Aug 2014 17:13:48 +0200 (CEST) |
> It is MPPEM which is called a lot. I wonder if it makes sense to
> cache the value and update it only when it potentially changes by
> other instructions. What do you think?
I think it is sufficient to check the 1.0 scale – today, non-square
pixels are extremely uncommon.
> What can change it?
Commands that influence the projection vector: SVTCA, SPVTCA, SPVTL,
SPVFS.
Werner