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* archive skpx... currently dead codeGravatar mtklein2015-12-11
| | | | | | | BUG=skia: CQ_EXTRA_TRYBOTS=client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot Review URL: https://codereview.chromium.org/1521623003
* SkPx: new approach to fixed-point SIMDGravatar mtklein2015-11-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | SkPx is like Sk4px, except each platform implementation of SkPx can declare a different sweet spot of N pixels, with extra loads and stores to handle the ragged edge of 0<n<N pixels. In this case, _sse's sweet spot remains 4 pixels. _neon jumps up to 8 so we can now use NEON's transposing loads and stores, and _none is just 1. This makes operations involving alpha considerably more efficient on NEON, as alpha is its own distinct 8x8 bit plane that's easy to toss around. This incorporates a few other improvements I've been wanting: - no requirement that we're dealing with SkPMColor. SkColor works too. - no anonymous namespace hack to differentiate implementations. Codegen and perf look good on Clang/x86-64 and GCC/ARMv7. The NEON code looks very similar to the old NEON code, as intended. No .skp or GM diffs on my laptop. Don't expect any. I intend this to replace Sk4px. Plan after landing: - port SkXfermode_opts.h - port Color32 in SkBlitRow_D32.cpp (and move to SkBlitRow_opts.h like other SkOpts code) - delete all Sk4px-related code - clean up evolutionary dead ends in SkNx (Sk16b, Sk16h, Sk4i, Sk4d, etc.) leaving Sk2f, Sk4f (and Sk2s, Sk4s). - find a machine with AVX2 to work on, write SkPx_avx2.h handling 8 pixels at a time. In the end we'll have Sk4f for float pixels, SkPx for fixed-point pixels. BUG=skia:4117 Committed: https://skia.googlesource.com/skia/+/82c93b45ed6ac0b628adb8375389c202d1f586f9 CQ_EXTRA_TRYBOTS=client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot;client.skia.compile:Build-Mac10.8-Clang-Arm7-Debug-Android-Trybot Committed: https://skia.googlesource.com/skia/+/a7627dc5cc2bf5d9a95d883d20c40d477ecadadf Review URL: https://codereview.chromium.org/1317233005
* Revert of SkPx: new approach to fixed-point SIMD (patchset #12 id:220001 of ↵Gravatar mtklein2015-11-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | https://codereview.chromium.org/1317233005/ ) Reason for revert: master-skia unhappy: https://android-build.storage.googleapis.com/builds/git_master-skia-linux-volantis-userdebug/2404853/e6c439e806fb0bd0f872a3d7a5cf0637d4ad11bfaa89e9bc18b651dc65f0a36b/logs/build_error.log?GoogleAccessId=701025073339-mqn0q2nvir9iurm6q5d00tdv7blbgvjr%40developer.gserviceaccount.com&Signature=WOqQO7xHkv83SmC4h5tNUIp%2BREaYULqK11hNTWlhj1XXo0NAOQd7GNSIHl775uRRZpBw2LkHeb2Ups3LsgRPrldqymposFtDa%2BUEW0Jv2NWAr%2F1Cqt6lwWsfknvJLN9NiEGfpCCye3Q%2FEYx9bU1ozMBG6h2DRHJUMRS%2FjstkJg0%3D&Expires=1446838937 Original issue's description: > SkPx: new approach to fixed-point SIMD > > SkPx is like Sk4px, except each platform implementation of SkPx can declare > a different sweet spot of N pixels, with extra loads and stores to handle the > ragged edge of 0<n<N pixels. > > In this case, _sse's sweet spot remains 4 pixels. _neon jumps up to 8 so > we can now use NEON's transposing loads and stores, and _none is just 1. > This makes operations involving alpha considerably more efficient on NEON, > as alpha is its own distinct 8x8 bit plane that's easy to toss around. > > This incorporates a few other improvements I've been wanting: > - no requirement that we're dealing with SkPMColor. SkColor works too. > - no anonymous namespace hack to differentiate implementations. > > Codegen and perf look good on Clang/x86-64 and GCC/ARMv7. > The NEON code looks very similar to the old NEON code, as intended. > No .skp or GM diffs on my laptop. Don't expect any. > > I intend this to replace Sk4px. Plan after landing: > - port SkXfermode_opts.h > - port Color32 in SkBlitRow_D32.cpp (and move to SkBlitRow_opts.h like other > SkOpts code) > - delete all Sk4px-related code > - clean up evolutionary dead ends in SkNx (Sk16b, Sk16h, Sk4i, Sk4d, etc.) > leaving Sk2f, Sk4f (and Sk2s, Sk4s). > - find a machine with AVX2 to work on, write SkPx_avx2.h handling 8 pixels > at a time. > > In the end we'll have Sk4f for float pixels, SkPx for fixed-point pixels. > > BUG=skia:4117 > > Committed: https://skia.googlesource.com/skia/+/82c93b45ed6ac0b628adb8375389c202d1f586f9 > > CQ_EXTRA_TRYBOTS=client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot;client.skia.compile:Build-Mac10.8-Clang-Arm7-Debug-Android-Trybot > > Committed: https://skia.googlesource.com/skia/+/a7627dc5cc2bf5d9a95d883d20c40d477ecadadf TBR=msarett@google.com,mtklein@chromium.org NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true BUG=skia:4117 Review URL: https://codereview.chromium.org/1409843005
* SkPx: new approach to fixed-point SIMDGravatar mtklein2015-11-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | SkPx is like Sk4px, except each platform implementation of SkPx can declare a different sweet spot of N pixels, with extra loads and stores to handle the ragged edge of 0<n<N pixels. In this case, _sse's sweet spot remains 4 pixels. _neon jumps up to 8 so we can now use NEON's transposing loads and stores, and _none is just 1. This makes operations involving alpha considerably more efficient on NEON, as alpha is its own distinct 8x8 bit plane that's easy to toss around. This incorporates a few other improvements I've been wanting: - no requirement that we're dealing with SkPMColor. SkColor works too. - no anonymous namespace hack to differentiate implementations. Codegen and perf look good on Clang/x86-64 and GCC/ARMv7. The NEON code looks very similar to the old NEON code, as intended. No .skp or GM diffs on my laptop. Don't expect any. I intend this to replace Sk4px. Plan after landing: - port SkXfermode_opts.h - port Color32 in SkBlitRow_D32.cpp (and move to SkBlitRow_opts.h like other SkOpts code) - delete all Sk4px-related code - clean up evolutionary dead ends in SkNx (Sk16b, Sk16h, Sk4i, Sk4d, etc.) leaving Sk2f, Sk4f (and Sk2s, Sk4s). - find a machine with AVX2 to work on, write SkPx_avx2.h handling 8 pixels at a time. In the end we'll have Sk4f for float pixels, SkPx for fixed-point pixels. BUG=skia:4117 Committed: https://skia.googlesource.com/skia/+/82c93b45ed6ac0b628adb8375389c202d1f586f9 CQ_EXTRA_TRYBOTS=client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot;client.skia.compile:Build-Mac10.8-Clang-Arm7-Debug-Android-Trybot Review URL: https://codereview.chromium.org/1317233005
* Revert of SkPx: new approach to fixed-point SIMD (patchset #9 id:160001 of ↵Gravatar mtklein2015-09-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | https://codereview.chromium.org/1317233005/ ) Reason for revert: http://build.chromium.org/p/client.skia.compile/builders/Build-Mac10.8-Clang-Arm7-Debug-Android/builds/4627 Original issue's description: > SkPx: new approach to fixed-point SIMD > > SkPx is like Sk4px, except each platform implementation of SkPx can declare > a different sweet spot of N pixels, with extra loads and stores to handle the > ragged edge of 0<n<N pixels. > > In this case, _sse's sweet spot remains 4 pixels. _neon jumps up to 8 so > we can now use NEON's transposing loads and stores, and _none is just 1. > This makes operations involving alpha considerably more efficient on NEON, > as alpha is its own distinct 8x8 bit plane that's easy to toss around. > > This incorporates a few other improvements I've been wanting: > - no requirement that we're dealing with SkPMColor. SkColor works too. > - no anonymous namespace hack to differentiate implementations. > > Codegen and perf look good on Clang/x86-64 and GCC/ARMv7. > The NEON code looks very similar to the old NEON code, as intended. > No .skp or GM diffs on my laptop. Don't expect any. > > I intend this to replace Sk4px. Plan after landing: > - port SkXfermode_opts.h > - port Color32 in SkBlitRow_D32.cpp (and move to SkBlitRow_opts.h like other > SkOpts code) > - delete all Sk4px-related code > - clean up evolutionary dead ends in SkNx (Sk16b, Sk16h, Sk4i, Sk4d, etc.) > leaving Sk2f, Sk4f (and Sk2s, Sk4s). > - find a machine with AVX2 to work on, write SkPx_avx2.h handling 8 pixels > at a time. > > In the end we'll have Sk4f for float pixels, SkPx for fixed-point pixels. > > BUG=skia:4117 > > Committed: https://skia.googlesource.com/skia/+/82c93b45ed6ac0b628adb8375389c202d1f586f9 TBR=mtklein@google.com,msarett@google.com NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true BUG=skia:4117 Review URL: https://codereview.chromium.org/1336423002
* SkPx: new approach to fixed-point SIMDGravatar mtklein2015-09-14
SkPx is like Sk4px, except each platform implementation of SkPx can declare a different sweet spot of N pixels, with extra loads and stores to handle the ragged edge of 0<n<N pixels. In this case, _sse's sweet spot remains 4 pixels. _neon jumps up to 8 so we can now use NEON's transposing loads and stores, and _none is just 1. This makes operations involving alpha considerably more efficient on NEON, as alpha is its own distinct 8x8 bit plane that's easy to toss around. This incorporates a few other improvements I've been wanting: - no requirement that we're dealing with SkPMColor. SkColor works too. - no anonymous namespace hack to differentiate implementations. Codegen and perf look good on Clang/x86-64 and GCC/ARMv7. The NEON code looks very similar to the old NEON code, as intended. No .skp or GM diffs on my laptop. Don't expect any. I intend this to replace Sk4px. Plan after landing: - port SkXfermode_opts.h - port Color32 in SkBlitRow_D32.cpp (and move to SkBlitRow_opts.h like other SkOpts code) - delete all Sk4px-related code - clean up evolutionary dead ends in SkNx (Sk16b, Sk16h, Sk4i, Sk4d, etc.) leaving Sk2f, Sk4f (and Sk2s, Sk4s). - find a machine with AVX2 to work on, write SkPx_avx2.h handling 8 pixels at a time. In the end we'll have Sk4f for float pixels, SkPx for fixed-point pixels. BUG=skia:4117 Review URL: https://codereview.chromium.org/1317233005