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| author |  msarett <msarett@google.com> | 2016-01-13 14:31:59 -0800 |
|---|---|---|
| committer |  Commit bot <commit-bot@chromium.org> | 2016-01-13 14:31:59 -0800 |
| commit | 3a24f459582f2665f0e66bd35a0d8f46a1c4c72f (patch) | |
| tree | 5faea85984dc8be63ebbd79e9b9c6ed346177efc /src/opts/SkOpts_neon.cpp | |
| parent | 06d54ad09a03edd62d597b2ba67ad3c05944fd92 (diff) | |
Optimized premultiplying swizzles for NEON
Improves decode performance for RGBA encoded PNGs.
Swizzle Time on Nexus 9 (with clang):
SwapPremul 0.44x
Premul 0.44x
Decode Time On Nexus 9 (with clang):
ZeroInit Decodes 0.85x
Regular Decodes 0.86x
Swizzle Time on Nexus 6P (with clang)
SwapPremul 0.14x
Premul 0.14x
Decode Time On Nexus 6P (with clang):
ZeroInit Decodes 0.93x
Regular Decodes 0.95x
Notes:
ZeroInit means memory is zero initialized, and we do not write to
memory for large sections of zero pixels (memory use opt for Android).
A profile on Nexus 9 shows that the premultiplication step of PNG
decoding is now ~5% of decode time (down from ~20%).
BUG=skia:4767
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1577703006
CQ_EXTRA_TRYBOTS=client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot
Review URL: https://codereview.chromium.org/1577703006
Diffstat (limited to 'src/opts/SkOpts_neon.cpp')
| -rw-r--r-- | src/opts/SkOpts_neon.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/opts/SkOpts_neon.cpp b/src/opts/SkOpts_neon.cpp index a0388b0654..3a07ebb765 100644 --- a/src/opts/SkOpts_neon.cpp +++ b/src/opts/SkOpts_neon.cpp @@ -15,6 +15,7 @@ #include "SkFloatingPoint_opts.h" #include "SkMatrix_opts.h" #include "SkMorphologyImageFilter_opts.h" +#include "SkSwizzler_opts.h" #include "SkTextureCompressor_opts.h" #include "SkUtils_opts.h" #include "SkXfermode_opts.h" @@ -47,5 +48,9 @@ namespace SkOpts { matrix_translate = sk_neon::matrix_translate; matrix_scale_translate = sk_neon::matrix_scale_translate; matrix_affine = sk_neon::matrix_affine; + + premul_xxxa = sk_neon::premul_xxxa; + premul_swaprb_xxxa = sk_neon::premul_swaprb_xxxa; + swaprb_xxxa = sk_neon::swaprb_xxxa; } } |