From 9366aff1fa1ab8af1cddfc9a32b3aaa5ae2dd143 Mon Sep 17 00:00:00 2001 From: scroggo Date: Fri, 20 May 2016 08:38:54 -0700 Subject: [PATCH] Stop creating CodecSrcs with unused scale Only JPEG and WEBP support native scaling, so only create a CodecSrc with a scale for those types. If I run dm --src image --images resources this cuts down the number of Srcs from 11063 to 8032. All of these trimmed Srcs would have failed quickly for each Sink (3 Sinks with the above flags), but this will avoid creating them. It drops the runtime on my mac from 13.2s to 11.4s, for about a 14% speedup. BUG=skia:5307 GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1999103002 Review-Url: https://codereview.chromium.org/1999103002 --- dm/DM.cpp | 41 ++++++++++++++++++++++------------------- 1 file changed, 22 insertions(+), 19 deletions(-) diff --git a/dm/DM.cpp b/dm/DM.cpp index 9051d5b..bb53638 100644 --- a/dm/DM.cpp +++ b/dm/DM.cpp @@ -481,9 +481,8 @@ static void push_codec_srcs(Path path) { return; } - // Native Scales - // SkJpegCodec natively supports scaling to: 0.125, 0.25, 0.375, 0.5, 0.625, 0.75, 0.875 - const float nativeScales[] = { 0.125f, 0.25f, 0.375f, 0.5f, 0.625f, 0.750f, 0.875f, 1.0f }; + // native scaling is only supported by WEBP and JPEG + bool supportsNativeScaling = false; SkTArray nativeModes; nativeModes.push_back(CodecSrc::kCodec_Mode); @@ -493,9 +492,11 @@ static void push_codec_srcs(Path path) { nativeModes.push_back(CodecSrc::kScanline_Mode); nativeModes.push_back(CodecSrc::kStripe_Mode); nativeModes.push_back(CodecSrc::kCroppedScanline_Mode); + supportsNativeScaling = true; break; case SkEncodedFormat::kWEBP_SkEncodedFormat: nativeModes.push_back(CodecSrc::kSubset_Mode); + supportsNativeScaling = true; break; case SkEncodedFormat::kDNG_SkEncodedFormat: break; @@ -529,24 +530,26 @@ static void push_codec_srcs(Path path) { } for (CodecSrc::Mode mode : nativeModes) { - for (float scale : nativeScales) { - for (CodecSrc::DstColorType colorType : colorTypes) { - for (SkAlphaType alphaType : alphaModes) { - // Only test kCroppedScanline_Mode when the alpha type is opaque. The test is - // slow and won't be interestingly different with different alpha types. - if (CodecSrc::kCroppedScanline_Mode == mode && - kOpaque_SkAlphaType != alphaType) { - continue; - } + for (CodecSrc::DstColorType colorType : colorTypes) { + for (SkAlphaType alphaType : alphaModes) { + // Only test kCroppedScanline_Mode when the alpha type is opaque. The test is + // slow and won't be interestingly different with different alpha types. + if (CodecSrc::kCroppedScanline_Mode == mode && + kOpaque_SkAlphaType != alphaType) { + continue; + } - // Skip kNonNative on different native scales. It won't be interestingly - // different. - if (CodecSrc::kNonNative8888_Always_DstColorType == colorType && 1.0f != scale) - { - continue; - } + push_codec_src(path, mode, colorType, alphaType, 1.0f); - push_codec_src(path, mode, colorType, alphaType, scale); + // Skip kNonNative on different native scales. It won't be interestingly + // different. + if (supportsNativeScaling && + CodecSrc::kNonNative8888_Always_DstColorType == colorType) { + // Native Scales + // SkJpegCodec natively supports scaling to the following: + for (auto scale : { 0.125f, 0.25f, 0.375f, 0.5f, 0.625f, 0.750f, 0.875f }) { + push_codec_src(path, mode, colorType, alphaType, scale); + } } } } -- 2.7.4