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authorVito Caputo <vcaputo@pengaru.com>2023-12-31 11:44:43 -0800
committerVito Caputo <vcaputo@pengaru.com>2023-12-31 11:49:02 -0800
commitd9cbdaf1eda5a2116087149313b3005e7e0a57be (patch)
treed1fd7a60f1fd30a5be8496086abd848648df781d /src/libs/playit
parent21101d536cca68a523655c16f4ce7aef8d22e79b (diff)
libs/din: trivial optimizations
din() is a hot path for modules/swab in particular. Barring any substantial changes to swab, which would probably make sense in the long-term, there's some low-hanging fruit in libs/din. Here smootherstep() has been made less general for a little perf boost. The way din uses smootherstep() doesn't need these bounds checks, nor does it need the caller-supplied edge values. Also the asserts() have been disabled in the hot path as they were mostly there for catching programmer errors and swab is already done. On my i7 x230 this takes swab from 44fps->54fps, so worthwhile, but swab is still painfully slow here. It's largely just a libs/din abuse module that was made to test libs/din, but turned out to look interesting enough to keep.
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