1c4b21e6c03a6cdb03e116b9f510eb10cf8daedb1commit-bot@chromium.org/* 2c4b21e6c03a6cdb03e116b9f510eb10cf8daedb1commit-bot@chromium.org * Copyright 2014 Google Inc. 3c4b21e6c03a6cdb03e116b9f510eb10cf8daedb1commit-bot@chromium.org * 4c4b21e6c03a6cdb03e116b9f510eb10cf8daedb1commit-bot@chromium.org * Use of this source code is governed by a BSD-style license that can be 5c4b21e6c03a6cdb03e116b9f510eb10cf8daedb1commit-bot@chromium.org * found in the LICENSE file. 6c4b21e6c03a6cdb03e116b9f510eb10cf8daedb1commit-bot@chromium.org */ 7c4b21e6c03a6cdb03e116b9f510eb10cf8daedb1commit-bot@chromium.org 8ad8ce572f69633ffebe2fa486275d82a5e9a71fecommit-bot@chromium.org#include "SkRecordOpts.h" 9506db0b7d2905c6bedba9fc5d4aeaf231a9a34eacommit-bot@chromium.org 1073fffeb83aab56bc8c2c5ce143ee9d132d64ac37commit-bot@chromium.org#include "SkRecordPattern.h" 11506db0b7d2905c6bedba9fc5d4aeaf231a9a34eacommit-bot@chromium.org#include "SkRecords.h" 12506db0b7d2905c6bedba9fc5d4aeaf231a9a34eacommit-bot@chromium.org#include "SkTDArray.h" 13506db0b7d2905c6bedba9fc5d4aeaf231a9a34eacommit-bot@chromium.org 1473fffeb83aab56bc8c2c5ce143ee9d132d64ac37commit-bot@chromium.orgusing namespace SkRecords; 1573fffeb83aab56bc8c2c5ce143ee9d132d64ac37commit-bot@chromium.org 16ad8ce572f69633ffebe2fa486275d82a5e9a71fecommit-bot@chromium.orgvoid SkRecordOptimize(SkRecord* record) { 171e78fc4ed2a1ef9f049311696ebd0a26e1c3782dmtklein // This might be useful as a first pass in the future if we want to weed 181e78fc4ed2a1ef9f049311696ebd0a26e1c3782dmtklein // out junk for other optimization passes. Right now, nothing needs it, 191e78fc4ed2a1ef9f049311696ebd0a26e1c3782dmtklein // and the bounding box hierarchy will do the work of skipping no-op 201e78fc4ed2a1ef9f049311696ebd0a26e1c3782dmtklein // Save-NoDraw-Restore sequences better than we can here. 211e78fc4ed2a1ef9f049311696ebd0a26e1c3782dmtklein //SkRecordNoopSaveRestores(record); 221e78fc4ed2a1ef9f049311696ebd0a26e1c3782dmtklein 2393f52a69443f9be16f4e98c21d1f6cf760a65f00mtklein SkRecordNoopSaveLayerDrawRestores(record); 24dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen SkRecordMergeSvgOpacityAndFilterLayers(record); 25ad8ce572f69633ffebe2fa486275d82a5e9a71fecommit-bot@chromium.org} 26ad8ce572f69633ffebe2fa486275d82a5e9a71fecommit-bot@chromium.org 2773fffeb83aab56bc8c2c5ce143ee9d132d64ac37commit-bot@chromium.org// Most of the optimizations in this file are pattern-based. These are all defined as structs with: 2873fffeb83aab56bc8c2c5ce143ee9d132d64ac37commit-bot@chromium.org// - a Pattern typedef 2973fffeb83aab56bc8c2c5ce143ee9d132d64ac37commit-bot@chromium.org// - a bool onMatch(SkRceord*, Pattern*, unsigned begin, unsigned end) method, 3073fffeb83aab56bc8c2c5ce143ee9d132d64ac37commit-bot@chromium.org// which returns true if it made changes and false if not. 312e0c32af0508a1e544c9953ea2fe128dbae7d429commit-bot@chromium.org 3273fffeb83aab56bc8c2c5ce143ee9d132d64ac37commit-bot@chromium.org// Run a pattern-based optimization once across the SkRecord, returning true if it made any changes. 3373fffeb83aab56bc8c2c5ce143ee9d132d64ac37commit-bot@chromium.org// It looks for spans which match Pass::Pattern, and when found calls onMatch() with the pattern, 3473fffeb83aab56bc8c2c5ce143ee9d132d64ac37commit-bot@chromium.org// record, and [begin,end) span of the commands that matched. 3573fffeb83aab56bc8c2c5ce143ee9d132d64ac37commit-bot@chromium.orgtemplate <typename Pass> 3673fffeb83aab56bc8c2c5ce143ee9d132d64ac37commit-bot@chromium.orgstatic bool apply(Pass* pass, SkRecord* record) { 3773fffeb83aab56bc8c2c5ce143ee9d132d64ac37commit-bot@chromium.org typename Pass::Pattern pattern; 3873fffeb83aab56bc8c2c5ce143ee9d132d64ac37commit-bot@chromium.org bool changed = false; 3973fffeb83aab56bc8c2c5ce143ee9d132d64ac37commit-bot@chromium.org unsigned begin, end = 0; 402e0c32af0508a1e544c9953ea2fe128dbae7d429commit-bot@chromium.org 4173fffeb83aab56bc8c2c5ce143ee9d132d64ac37commit-bot@chromium.org while (pattern.search(record, &begin, &end)) { 4273fffeb83aab56bc8c2c5ce143ee9d132d64ac37commit-bot@chromium.org changed |= pass->onMatch(record, &pattern, begin, end); 432e0c32af0508a1e544c9953ea2fe128dbae7d429commit-bot@chromium.org } 4473fffeb83aab56bc8c2c5ce143ee9d132d64ac37commit-bot@chromium.org return changed; 4573fffeb83aab56bc8c2c5ce143ee9d132d64ac37commit-bot@chromium.org} 462e0c32af0508a1e544c9953ea2fe128dbae7d429commit-bot@chromium.org 47467705adf05ba99bbd9ccdf6a40eb463484a6fbfcommit-bot@chromium.org// Turns the logical NoOp Save and Restore in Save-Draw*-Restore patterns into actual NoOps. 48467705adf05ba99bbd9ccdf6a40eb463484a6fbfcommit-bot@chromium.orgstruct SaveOnlyDrawsRestoreNooper { 49467705adf05ba99bbd9ccdf6a40eb463484a6fbfcommit-bot@chromium.org typedef Pattern3<Is<Save>, 50467705adf05ba99bbd9ccdf6a40eb463484a6fbfcommit-bot@chromium.org Star<Or<Is<NoOp>, IsDraw> >, 51467705adf05ba99bbd9ccdf6a40eb463484a6fbfcommit-bot@chromium.org Is<Restore> > 52467705adf05ba99bbd9ccdf6a40eb463484a6fbfcommit-bot@chromium.org Pattern; 53467705adf05ba99bbd9ccdf6a40eb463484a6fbfcommit-bot@chromium.org 54467705adf05ba99bbd9ccdf6a40eb463484a6fbfcommit-bot@chromium.org bool onMatch(SkRecord* record, Pattern* pattern, unsigned begin, unsigned end) { 55467705adf05ba99bbd9ccdf6a40eb463484a6fbfcommit-bot@chromium.org record->replace<NoOp>(begin); // Save 56467705adf05ba99bbd9ccdf6a40eb463484a6fbfcommit-bot@chromium.org record->replace<NoOp>(end-1); // Restore 57467705adf05ba99bbd9ccdf6a40eb463484a6fbfcommit-bot@chromium.org return true; 58467705adf05ba99bbd9ccdf6a40eb463484a6fbfcommit-bot@chromium.org } 59467705adf05ba99bbd9ccdf6a40eb463484a6fbfcommit-bot@chromium.org}; 60dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen 61dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunenstatic bool fold_opacity_layer_color_to_paint(const SkPaint& layerPaint, 62dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen bool isSaveLayer, 63dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen SkPaint* paint) { 64dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen // We assume layerPaint is always from a saveLayer. If isSaveLayer is 65dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen // true, we assume paint is too. 66dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen 67dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen // The alpha folding can proceed if the filter layer paint does not have properties which cause 68dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen // the resulting filter layer to be "blended" in complex ways to the parent layer. For example, 69dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen // looper drawing unmodulated filter layer twice and then modulating the result produces 70dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen // different image to drawing modulated filter layer twice. 71dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen // TODO: most likely the looper and only some xfer modes are the hard constraints 72dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen if (paint->getXfermode() || paint->getLooper()) { 73dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen return false; 74dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen } 75dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen 76dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen if (!isSaveLayer && paint->getImageFilter()) { 77dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen // For normal draws, the paint color is used as one input for the color for the draw. Image 78dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen // filter will operate on the result, and thus we can not change the input. 79dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen // For layer saves, the image filter is applied to the layer contents. The layer is then 80dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen // modulated with the paint color, so it's fine to proceed with the fold for saveLayer 81dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen // paints with image filters. 82dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen return false; 83dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen } 84dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen 85dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen if (paint->getColorFilter()) { 86dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen // Filter input depends on the paint color. 87dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen 88dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen // Here we could filter the color if we knew the draw is going to be uniform color. This 89dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen // should be detectable as drawPath/drawRect/.. without a shader being uniform, while 90dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen // drawBitmap/drawSprite or a shader being non-uniform. However, current matchers don't 91dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen // give the type out easily, so just do not optimize that at the moment. 92dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen return false; 93dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen } 94dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen 95dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen const uint32_t layerColor = layerPaint.getColor(); 96dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen // The layer paint color must have only alpha component. 97dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen if (SK_ColorTRANSPARENT != SkColorSetA(layerColor, SK_AlphaTRANSPARENT)) { 98dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen return false; 99dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen } 100dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen 101dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen // The layer paint can not have any effects. 102dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen if (layerPaint.getPathEffect() || 103dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen layerPaint.getShader() || 104dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen layerPaint.getXfermode() || 105dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen layerPaint.getMaskFilter() || 106dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen layerPaint.getColorFilter() || 107dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen layerPaint.getRasterizer() || 108dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen layerPaint.getLooper() || 109dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen layerPaint.getImageFilter()) { 110dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen return false; 111dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen } 112dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen 113dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen paint->setAlpha(SkMulDiv255Round(paint->getAlpha(), SkColorGetA(layerColor))); 114dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen 115dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen return true; 116dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen} 117dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen 11873fffeb83aab56bc8c2c5ce143ee9d132d64ac37commit-bot@chromium.org// Turns logical no-op Save-[non-drawing command]*-Restore patterns into actual no-ops. 119467705adf05ba99bbd9ccdf6a40eb463484a6fbfcommit-bot@chromium.orgstruct SaveNoDrawsRestoreNooper { 12073fffeb83aab56bc8c2c5ce143ee9d132d64ac37commit-bot@chromium.org // Star matches greedily, so we also have to exclude Save and Restore. 12199d6a9ee8b3516de892d118c71aa5e6e5c865efdmtklein // Nested SaveLayers need to be excluded, or we'll match their Restore! 12273fffeb83aab56bc8c2c5ce143ee9d132d64ac37commit-bot@chromium.org typedef Pattern3<Is<Save>, 12399d6a9ee8b3516de892d118c71aa5e6e5c865efdmtklein Star<Not<Or4<Is<Save>, 12499d6a9ee8b3516de892d118c71aa5e6e5c865efdmtklein Is<SaveLayer>, 12573fffeb83aab56bc8c2c5ce143ee9d132d64ac37commit-bot@chromium.org Is<Restore>, 12673fffeb83aab56bc8c2c5ce143ee9d132d64ac37commit-bot@chromium.org IsDraw> > >, 12773fffeb83aab56bc8c2c5ce143ee9d132d64ac37commit-bot@chromium.org Is<Restore> > 12873fffeb83aab56bc8c2c5ce143ee9d132d64ac37commit-bot@chromium.org Pattern; 12973fffeb83aab56bc8c2c5ce143ee9d132d64ac37commit-bot@chromium.org 13073fffeb83aab56bc8c2c5ce143ee9d132d64ac37commit-bot@chromium.org bool onMatch(SkRecord* record, Pattern* pattern, unsigned begin, unsigned end) { 13173fffeb83aab56bc8c2c5ce143ee9d132d64ac37commit-bot@chromium.org // The entire span between Save and Restore (inclusively) does nothing. 13273fffeb83aab56bc8c2c5ce143ee9d132d64ac37commit-bot@chromium.org for (unsigned i = begin; i < end; i++) { 13373fffeb83aab56bc8c2c5ce143ee9d132d64ac37commit-bot@chromium.org record->replace<NoOp>(i); 13473fffeb83aab56bc8c2c5ce143ee9d132d64ac37commit-bot@chromium.org } 13573fffeb83aab56bc8c2c5ce143ee9d132d64ac37commit-bot@chromium.org return true; 1362e0c32af0508a1e544c9953ea2fe128dbae7d429commit-bot@chromium.org } 13788c3e279ab79125e5741b0b0b3175291e2e2bbeecommit-bot@chromium.org}; 13873fffeb83aab56bc8c2c5ce143ee9d132d64ac37commit-bot@chromium.orgvoid SkRecordNoopSaveRestores(SkRecord* record) { 139467705adf05ba99bbd9ccdf6a40eb463484a6fbfcommit-bot@chromium.org SaveOnlyDrawsRestoreNooper onlyDraws; 140467705adf05ba99bbd9ccdf6a40eb463484a6fbfcommit-bot@chromium.org SaveNoDrawsRestoreNooper noDraws; 141467705adf05ba99bbd9ccdf6a40eb463484a6fbfcommit-bot@chromium.org 142467705adf05ba99bbd9ccdf6a40eb463484a6fbfcommit-bot@chromium.org // Run until they stop changing things. 143467705adf05ba99bbd9ccdf6a40eb463484a6fbfcommit-bot@chromium.org while (apply(&onlyDraws, record) || apply(&noDraws, record)); 14473fffeb83aab56bc8c2c5ce143ee9d132d64ac37commit-bot@chromium.org} 14588c3e279ab79125e5741b0b0b3175291e2e2bbeecommit-bot@chromium.org 146f5bf3cf0257dc3d18932bde51f8eae33442e071fcommit-bot@chromium.org// For some SaveLayer-[drawing command]-Restore patterns, merge the SaveLayer's alpha into the 147f5bf3cf0257dc3d18932bde51f8eae33442e071fcommit-bot@chromium.org// draw, and no-op the SaveLayer and Restore. 148f5bf3cf0257dc3d18932bde51f8eae33442e071fcommit-bot@chromium.orgstruct SaveLayerDrawRestoreNooper { 149f5bf3cf0257dc3d18932bde51f8eae33442e071fcommit-bot@chromium.org typedef Pattern3<Is<SaveLayer>, IsDraw, Is<Restore> > Pattern; 150f5bf3cf0257dc3d18932bde51f8eae33442e071fcommit-bot@chromium.org 151f5bf3cf0257dc3d18932bde51f8eae33442e071fcommit-bot@chromium.org bool onMatch(SkRecord* record, Pattern* pattern, unsigned begin, unsigned end) { 1520c278972d06882f21dda07e17d6e7457f590ea69mtklein // A SaveLayer's bounds field is just a hint, so we should be free to ignore it. 1530c278972d06882f21dda07e17d6e7457f590ea69mtklein SkPaint* layerPaint = pattern->first<SaveLayer>()->paint; 154f5bf3cf0257dc3d18932bde51f8eae33442e071fcommit-bot@chromium.org if (NULL == layerPaint) { 155f5bf3cf0257dc3d18932bde51f8eae33442e071fcommit-bot@chromium.org // There wasn't really any point to this SaveLayer at all. 156f5bf3cf0257dc3d18932bde51f8eae33442e071fcommit-bot@chromium.org return KillSaveLayerAndRestore(record, begin); 157f5bf3cf0257dc3d18932bde51f8eae33442e071fcommit-bot@chromium.org } 158f5bf3cf0257dc3d18932bde51f8eae33442e071fcommit-bot@chromium.org 159f5bf3cf0257dc3d18932bde51f8eae33442e071fcommit-bot@chromium.org SkPaint* drawPaint = pattern->second<SkPaint>(); 160f5bf3cf0257dc3d18932bde51f8eae33442e071fcommit-bot@chromium.org if (drawPaint == NULL) { 161f5bf3cf0257dc3d18932bde51f8eae33442e071fcommit-bot@chromium.org // We can just give the draw the SaveLayer's paint. 162f5bf3cf0257dc3d18932bde51f8eae33442e071fcommit-bot@chromium.org // TODO(mtklein): figure out how to do this clearly 163f5bf3cf0257dc3d18932bde51f8eae33442e071fcommit-bot@chromium.org return false; 164f5bf3cf0257dc3d18932bde51f8eae33442e071fcommit-bot@chromium.org } 165f5bf3cf0257dc3d18932bde51f8eae33442e071fcommit-bot@chromium.org 166dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen if (!fold_opacity_layer_color_to_paint(*layerPaint, false /*isSaveLayer*/, drawPaint)) { 167f5bf3cf0257dc3d18932bde51f8eae33442e071fcommit-bot@chromium.org return false; 168f5bf3cf0257dc3d18932bde51f8eae33442e071fcommit-bot@chromium.org } 169f5bf3cf0257dc3d18932bde51f8eae33442e071fcommit-bot@chromium.org 170f5bf3cf0257dc3d18932bde51f8eae33442e071fcommit-bot@chromium.org return KillSaveLayerAndRestore(record, begin); 171f5bf3cf0257dc3d18932bde51f8eae33442e071fcommit-bot@chromium.org } 172f5bf3cf0257dc3d18932bde51f8eae33442e071fcommit-bot@chromium.org 173f5bf3cf0257dc3d18932bde51f8eae33442e071fcommit-bot@chromium.org static bool KillSaveLayerAndRestore(SkRecord* record, unsigned saveLayerIndex) { 174f5bf3cf0257dc3d18932bde51f8eae33442e071fcommit-bot@chromium.org record->replace<NoOp>(saveLayerIndex); // SaveLayer 175f5bf3cf0257dc3d18932bde51f8eae33442e071fcommit-bot@chromium.org record->replace<NoOp>(saveLayerIndex+2); // Restore 176f5bf3cf0257dc3d18932bde51f8eae33442e071fcommit-bot@chromium.org return true; 177f5bf3cf0257dc3d18932bde51f8eae33442e071fcommit-bot@chromium.org } 178dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen}; 179dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunenvoid SkRecordNoopSaveLayerDrawRestores(SkRecord* record) { 180dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen SaveLayerDrawRestoreNooper pass; 181dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen apply(&pass, record); 182dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen} 183f5bf3cf0257dc3d18932bde51f8eae33442e071fcommit-bot@chromium.org 184f5bf3cf0257dc3d18932bde51f8eae33442e071fcommit-bot@chromium.org 185dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen/* For SVG generated: 186dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen SaveLayer (non-opaque, typically for CSS opacity) 187dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen Save 188dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen ClipRect 189dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen SaveLayer (typically for SVG filter) 190dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen Restore 191dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen Restore 192dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen Restore 193dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen*/ 194dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunenstruct SvgOpacityAndFilterLayerMergePass { 195dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen typedef Pattern7<Is<SaveLayer>, Is<Save>, Is<ClipRect>, Is<SaveLayer>, 196dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen Is<Restore>, Is<Restore>, Is<Restore> > Pattern; 197dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen 198dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen bool onMatch(SkRecord* record, Pattern* pattern, unsigned begin, unsigned end) { 199dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen SkPaint* opacityPaint = pattern->first<SaveLayer>()->paint; 200dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen if (NULL == opacityPaint) { 201dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen // There wasn't really any point to this SaveLayer at all. 202dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen return KillSaveLayerAndRestore(record, begin); 203dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen } 204dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen 205dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen // This layer typically contains a filter, but this should work for layers with for other 206dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen // purposes too. 207dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen SkPaint* filterLayerPaint = pattern->fourth<SaveLayer>()->paint; 208dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen if (filterLayerPaint == NULL) { 209dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen // We can just give the inner SaveLayer the paint of the outer SaveLayer. 210dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen // TODO(mtklein): figure out how to do this clearly 211dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen return false; 212dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen } 213dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen 214dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen if (!fold_opacity_layer_color_to_paint(*opacityPaint, true /*isSaveLayer*/, 215dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen filterLayerPaint)) { 216dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen return false; 217dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen } 218dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen 219dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen return KillSaveLayerAndRestore(record, begin); 220ca32da7533ed86fbbe50e078c751b0f1c198bb5brobertphillips } 221ca32da7533ed86fbbe50e078c751b0f1c198bb5brobertphillips 222dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen static bool KillSaveLayerAndRestore(SkRecord* record, unsigned saveLayerIndex) { 223dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen record->replace<NoOp>(saveLayerIndex); // SaveLayer 224dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen record->replace<NoOp>(saveLayerIndex + 6); // Restore 225dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen return true; 226f5bf3cf0257dc3d18932bde51f8eae33442e071fcommit-bot@chromium.org } 227f5bf3cf0257dc3d18932bde51f8eae33442e071fcommit-bot@chromium.org}; 228dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen 229dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunenvoid SkRecordMergeSvgOpacityAndFilterLayers(SkRecord* record) { 230dc0f408a961b6ce4e7631e06031bbfe1d8d7bceckkinnunen SvgOpacityAndFilterLayerMergePass pass; 231f5bf3cf0257dc3d18932bde51f8eae33442e071fcommit-bot@chromium.org apply(&pass, record); 232f5bf3cf0257dc3d18932bde51f8eae33442e071fcommit-bot@chromium.org} 233