654ad19fbd
Reason for revert: http://build.chromium.org/p/client.skia.compile/builders/Build-Ubuntu-GCC-Arm7-Debug-Android_NoNeon/builds/1168/steps/build%20most/logs/stdio Original issue's description: > De-templatize Sk4pxXfermode code a bit. > > This deduplicates a few pieces of code: > - we end up with one copy of each xfer32() driver loop instead of one per xfermode; > - we end up with two* copies of each xfermode implementation instead of ten**. > > * For a given Mode: Mode() itself and xfer_aa<Mode>(). > ** From unrolling: twice at a stride of 8, once at 4, once at 2, and once at 1, then all again for when we have AA. > > This decreases the size of SkXfermode.o from 1.5M to 620K on x86-64 and from 1.3M to 680K on ARMv7+NEON. > > If we wanted to, we could eliminate the xfer_aa<Mode>() copy by tagging each Mode() function as __attribute__((noinline)) or its equivalent. This would result in another ~100K space savings. > > Performance is affected in proportion to the original xfermode speed: > fast modes like Plus take the largest proportional hit, and slow modes > like HardLight or SoftLight see essentially no hit at all. > > This adds SK_VECTORCALL to help keep this code fast on ARMv7 and Windows. I've looked at the ARMv7 generated code... it looks good, even pretty. > > For compatibility with SK_VECTORCALL, we now pass the vector-sized arguments by value instead of by reference. Some refactoring now allows us to declare each mode as just a static function instead of a struct, which simplifies things. > > TBR=reed@google.com > No public API changes. > > BUG=skia: > > Committed: https://skia.googlesource.com/skia/+/e617e1525916d7ee684142728c0905828caf49da TBR=msarett@google.com,mtklein@chromium.org NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true BUG=skia: Review URL: https://codereview.chromium.org/1245273005 |
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| animator | ||
| c | ||
| codec | ||
| config | ||
| core | ||
| device/xps | ||
| effects | ||
| gpu | ||
| images | ||
| pathops | ||
| pipe | ||
| ports | ||
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| utils | ||
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| xml | ||