Added optimizations for several bilinear fast paths:
- src_8888_8_8888
- src_8888_8_0565
- src_0565_8_x888
- src_0565_8_0565
- add_8888_8_8888
- src_8888_8888
- src_8888_0565
- src_0565_8888
- src_0565_0565
- over_8888_8888
- add_8888_8888
Benchmark results (using lowlevel-blt-bench) on Malta board (@1Ghz) are
included in the log messages.
Per previous code review:
- Assembly code now respects the interpolation precision settings defined by
BILINEAR_INTERPOLATION_BITS.
- "make check" pass when this flag is set to 7 (default) and 8.
Any comments to this patch are welcome.
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