| /* |
| * Copyright 2018 The Android Open Source Project |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "SkGlyphRunPainter.h" |
| |
| #if SK_SUPPORT_GPU |
| #include "GrCaps.h" |
| #include "GrColorSpaceInfo.h" |
| #include "GrContextPriv.h" |
| #include "GrRecordingContext.h" |
| #include "GrRecordingContextPriv.h" |
| #include "GrRenderTargetContext.h" |
| #include "SkGr.h" |
| #include "text/GrTextBlobCache.h" |
| #include "text/GrTextContext.h" |
| #endif |
| |
| #include "SkColorFilter.h" |
| #include "SkDevice.h" |
| #include "SkDistanceFieldGen.h" |
| #include "SkDraw.h" |
| #include "SkFontPriv.h" |
| #include "SkMaskFilter.h" |
| #include "SkPaintPriv.h" |
| #include "SkPathEffect.h" |
| #include "SkRasterClip.h" |
| #include "SkRemoteGlyphCacheImpl.h" |
| #include "SkStrikeInterface.h" |
| #include "SkStrike.h" |
| #include "SkStrikeCache.h" |
| #include "SkTDArray.h" |
| #include "SkTraceEvent.h" |
| |
| // -- SkGlyphCacheCommon --------------------------------------------------------------------------- |
| |
| SkVector SkStrikeCommon::PixelRounding(bool isSubpixel, SkAxisAlignment axisAlignment) { |
| if (!isSubpixel) { |
| return {SK_ScalarHalf, SK_ScalarHalf}; |
| } else { |
| static constexpr SkScalar kSubpixelRounding = SkFixedToScalar(SkGlyph::kSubpixelRound); |
| switch (axisAlignment) { |
| case kX_SkAxisAlignment: |
| return {kSubpixelRounding, SK_ScalarHalf}; |
| case kY_SkAxisAlignment: |
| return {SK_ScalarHalf, kSubpixelRounding}; |
| case kNone_SkAxisAlignment: |
| return {kSubpixelRounding, kSubpixelRounding}; |
| } |
| } |
| |
| // Some compilers need this. |
| return {0, 0}; |
| } |
| |
| SkIPoint SkStrikeCommon::SubpixelLookup(SkAxisAlignment axisAlignment, SkPoint position) { |
| // TODO: SkScalarFraction uses truncf to calculate the fraction. This should be floorf. |
| SkFixed lookupX = SkScalarToFixed(SkScalarFraction(position.x())), |
| lookupY = SkScalarToFixed(SkScalarFraction(position.y())); |
| |
| // Snap to a given axis if alignment is requested. |
| if (axisAlignment == kX_SkAxisAlignment) { |
| lookupY = 0; |
| } else if (axisAlignment == kY_SkAxisAlignment) { |
| lookupX = 0; |
| } |
| |
| return {lookupX, lookupY}; |
| } |
| |
| bool SkStrikeCommon::GlyphTooBigForAtlas(const SkGlyph& glyph) { |
| return glyph.fWidth > kSkSideTooBigForAtlas || glyph.fHeight > kSkSideTooBigForAtlas; |
| } |
| |
| // -- SkGlyphRunListPainter ------------------------------------------------------------------------ |
| SkGlyphRunListPainter::SkGlyphRunListPainter(const SkSurfaceProps& props, |
| SkColorType colorType, |
| SkScalerContextFlags flags, |
| SkStrikeCacheInterface* strikeCache) |
| : fDeviceProps{props} |
| , fBitmapFallbackProps{SkSurfaceProps{props.flags(), kUnknown_SkPixelGeometry}} |
| , fColorType{colorType}, fScalerContextFlags{flags} |
| , fStrikeCache{strikeCache} {} |
| |
| // TODO: unify with code in GrTextContext.cpp |
| static SkScalerContextFlags compute_scaler_context_flags(const SkColorSpace* cs) { |
| // If we're doing linear blending, then we can disable the gamma hacks. |
| // Otherwise, leave them on. In either case, we still want the contrast boost: |
| // TODO: Can we be even smarter about mask gamma based on the dest transfer function? |
| if (cs && cs->gammaIsLinear()) { |
| return SkScalerContextFlags::kBoostContrast; |
| } else { |
| return SkScalerContextFlags::kFakeGammaAndBoostContrast; |
| } |
| } |
| |
| SkGlyphRunListPainter::SkGlyphRunListPainter(const SkSurfaceProps& props, |
| SkColorType colorType, |
| SkColorSpace* cs, |
| SkStrikeCacheInterface* strikeCache) |
| : SkGlyphRunListPainter(props, colorType, compute_scaler_context_flags(cs), strikeCache) {} |
| |
| #if SK_SUPPORT_GPU |
| SkGlyphRunListPainter::SkGlyphRunListPainter(const SkSurfaceProps& props, |
| const GrColorSpaceInfo& csi) |
| : SkGlyphRunListPainter(props, |
| kUnknown_SkColorType, |
| compute_scaler_context_flags(csi.colorSpace()), |
| SkStrikeCache::GlobalStrikeCache()) {} |
| |
| SkGlyphRunListPainter::SkGlyphRunListPainter(const GrRenderTargetContext& rtc) |
| : SkGlyphRunListPainter{rtc.surfaceProps(), rtc.colorSpaceInfo()} {} |
| |
| #endif |
| |
| bool SkGlyphRunListPainter::ShouldDrawAsPath( |
| const SkPaint& paint, const SkFont& font, const SkMatrix& matrix) { |
| // hairline glyphs are fast enough so we don't need to cache them |
| if (SkPaint::kStroke_Style == paint.getStyle() && 0 == paint.getStrokeWidth()) { |
| return true; |
| } |
| |
| // we don't cache perspective |
| if (matrix.hasPerspective()) { |
| return true; |
| } |
| |
| return SkFontPriv::TooBigToUseCache(matrix, SkFontPriv::MakeTextMatrix(font), 1024); |
| } |
| |
| static bool check_glyph_position(SkPoint position) { |
| // Prevent glyphs from being drawn outside of or straddling the edge of device space. |
| // Comparisons written a little weirdly so that NaN coordinates are treated safely. |
| auto gt = [](float a, int b) { return !(a <= (float)b); }; |
| auto lt = [](float a, int b) { return !(a >= (float)b); }; |
| return !(gt(position.fX, INT_MAX - (INT16_MAX + SkTo<int>(UINT16_MAX))) || |
| lt(position.fX, INT_MIN - (INT16_MIN + 0 /*UINT16_MIN*/)) || |
| gt(position.fY, INT_MAX - (INT16_MAX + SkTo<int>(UINT16_MAX))) || |
| lt(position.fY, INT_MIN - (INT16_MIN + 0 /*UINT16_MIN*/))); |
| } |
| |
| static SkMask create_mask(const SkGlyph& glyph, SkPoint position, const void* image) { |
| SkMask mask; |
| int left = SkScalarFloorToInt(position.fX); |
| int top = SkScalarFloorToInt(position.fY); |
| |
| left += glyph.fLeft; |
| top += glyph.fTop; |
| |
| int right = left + glyph.fWidth; |
| int bottom = top + glyph.fHeight; |
| |
| mask.fBounds.set(left, top, right, bottom); |
| SkASSERT(!mask.fBounds.isEmpty()); |
| |
| mask.fImage = (uint8_t*)image; |
| mask.fRowBytes = glyph.rowBytes(); |
| mask.fFormat = static_cast<SkMask::Format>(glyph.fMaskFormat); |
| |
| return mask; |
| } |
| |
| void SkGlyphRunListPainter::drawForBitmapDevice( |
| const SkGlyphRunList& glyphRunList, const SkMatrix& deviceMatrix, |
| const BitmapDevicePainter* bitmapDevice) { |
| ScopedBuffers _ = this->ensureBuffers(glyphRunList); |
| |
| const SkPaint& runPaint = glyphRunList.paint(); |
| // The bitmap blitters can only draw lcd text to a N32 bitmap in srcOver. Otherwise, |
| // convert the lcd text into A8 text. The props communicates this to the scaler. |
| auto& props = (kN32_SkColorType == fColorType && runPaint.isSrcOver()) |
| ? fDeviceProps |
| : fBitmapFallbackProps; |
| |
| SkPoint origin = glyphRunList.origin(); |
| for (auto& glyphRun : glyphRunList) { |
| const SkFont& runFont = glyphRun.font(); |
| auto runSize = glyphRun.runSize(); |
| |
| if (ShouldDrawAsPath(runPaint, runFont, deviceMatrix)) { |
| SkMatrix::MakeTrans(origin.x(), origin.y()).mapPoints( |
| fPositions, glyphRun.positions().data(), runSize); |
| // setup our std pathPaint, in hopes of getting hits in the cache |
| SkPaint pathPaint(runPaint); |
| SkFont pathFont{runFont}; |
| SkScalar textScale = pathFont.setupForAsPaths(&pathPaint); |
| |
| auto pathCache = SkStrikeCache::FindOrCreateStrikeExclusive( |
| pathFont, pathPaint, props, |
| fScalerContextFlags, SkMatrix::I()); |
| |
| SkTDArray<PathAndPos> pathsAndPositions; |
| pathsAndPositions.setReserve(runSize); |
| SkPoint* positionCursor = fPositions; |
| for (auto glyphID : glyphRun.glyphsIDs()) { |
| SkPoint position = *positionCursor++; |
| if (check_glyph_position(position)) { |
| const SkGlyph& glyph = pathCache->getGlyphMetrics(glyphID, {0, 0}); |
| if (!glyph.isEmpty()) { |
| const SkPath* path = pathCache->findPath(glyph); |
| if (path != nullptr) { |
| pathsAndPositions.push_back(PathAndPos{path, position}); |
| } |
| } |
| } |
| } |
| |
| // The paint we draw paths with must have the same anti-aliasing state as the runFont |
| // allowing the paths to have the same edging as the glyph masks. |
| pathPaint = runPaint; |
| pathPaint.setAntiAlias(runFont.hasSomeAntiAliasing()); |
| |
| bitmapDevice->paintPaths( |
| SkSpan<const PathAndPos>{pathsAndPositions.begin(), pathsAndPositions.size()}, |
| textScale, pathPaint); |
| } else { |
| auto cache = SkStrikeCache::FindOrCreateStrikeExclusive( |
| runFont, runPaint, props, |
| fScalerContextFlags, deviceMatrix); |
| |
| // Add rounding and origin. |
| SkMatrix matrix = deviceMatrix; |
| matrix.preTranslate(origin.x(), origin.y()); |
| SkPoint rounding = cache->rounding(); |
| matrix.postTranslate(rounding.x(), rounding.y()); |
| matrix.mapPoints(fPositions, glyphRun.positions().data(), runSize); |
| |
| SkTDArray<SkMask> masks; |
| masks.setReserve(runSize); |
| const SkPoint* positionCursor = fPositions; |
| for (auto glyphID : glyphRun.glyphsIDs()) { |
| auto position = *positionCursor++; |
| if (check_glyph_position(position)) { |
| const SkGlyph& glyph = cache->getGlyphMetrics(glyphID, position); |
| const void* image; |
| if (!glyph.isEmpty() && (image = cache->findImage(glyph))) { |
| masks.push_back(create_mask(glyph, position, image)); |
| } |
| } |
| } |
| bitmapDevice->paintMasks(SkSpan<const SkMask>{masks.begin(), masks.size()}, runPaint); |
| } |
| } |
| } |
| |
| // Getting glyphs to the screen in a fallback situation can be complex. Here is the set of |
| // transformations that have to happen. Normally, they would all be accommodated by the font |
| // scaler, but the atlas has an upper limit to the glyphs it can handle. So the GPU is used to |
| // make up the difference from the smaller atlas size to the larger size needed by the final |
| // transform. Here are the transformations that are applied. |
| // |
| // final transform = [view matrix] * [text scale] * [text size] |
| // |
| // There are three cases: |
| // * Go Fast - view matrix is scale and translate, and all the glyphs are small enough |
| // Just scale the positions, and have the glyph cache handle the view matrix transformation. |
| // The text scale is 1. |
| // * It's complicated - view matrix is not scale and translate, and the glyphs are small enough |
| // The glyph cache does not handle the view matrix, but stores the glyphs at the text size |
| // specified by the run paint. The GPU handles the rotation, etc. specified by the view matrix. |
| // The text scale is 1. |
| // * Too big - The glyphs are too big to fit in the atlas |
| // Reduce the text size so the glyphs will fit in the atlas, but don't apply any |
| // transformations from the view matrix. Calculate a text scale based on that reduction. This |
| // scale factor is used to increase the size of the destination rectangles. The destination |
| // rectangles are then scaled, rotated, etc. by the GPU using the view matrix. |
| template<typename ProcessDeviceT, typename ProcessSourceT> |
| void SkGlyphRunListPainter::processARGBFallback(SkScalar maxGlyphDimension, |
| const SkPaint& runPaint, |
| const SkFont& runFont, |
| const SkMatrix& viewMatrix, |
| SkScalar textScale, |
| ProcessDeviceT&& processDevice, |
| ProcessSourceT&& processSource) { |
| SkASSERT(!fARGBGlyphsIDs.empty()); |
| |
| SkScalar maxScale = viewMatrix.getMaxScale(); |
| |
| // This is a conservative estimate of the longest dimension among all the glyph widths and |
| // heights. |
| SkScalar conservativeMaxGlyphDimension = maxGlyphDimension * textScale * maxScale; |
| |
| // If the situation that the matrix is simple, and all the glyphs are small enough. Go fast! |
| // N.B. If the matrix has scale, that will be reflected in the strike through the viewMatrix |
| // in the useFastPath case. |
| bool useFastPath = |
| viewMatrix.isScaleTranslate() |
| && conservativeMaxGlyphDimension <= SkStrikeCommon::kSkSideTooBigForAtlas; |
| |
| // A scaled and translated transform is the common case, and is handled directly in fallback. |
| // Even if the transform is scale and translate, fallback must be careful to use glyphs that |
| // fit in the atlas. If a glyph will not fit in the atlas, then the general transform case is |
| // used to render the glyphs. |
| if (useFastPath) { |
| // Translate the positions to device space. |
| viewMatrix.mapPoints(fARGBPositions.data(), fARGBPositions.size()); |
| for (SkPoint& point : fARGBPositions) { |
| point.fX = SkScalarFloorToScalar(point.fX); |
| point.fY = SkScalarFloorToScalar(point.fY); |
| } |
| |
| SkAutoDescriptor ad; |
| SkScalerContextEffects effects; |
| SkScalerContext::CreateDescriptorAndEffectsUsingPaint( |
| runFont, runPaint, fDeviceProps, fScalerContextFlags, viewMatrix, &ad, &effects); |
| |
| SkScopedStrike strike = |
| fStrikeCache->findOrCreateScopedStrike( |
| *ad.getDesc(), effects, *runFont.getTypefaceOrDefault()); |
| |
| SkPoint* posCursor = fARGBPositions.data(); |
| int glyphCount = 0; |
| for (SkGlyphID glyphID : fARGBGlyphsIDs) { |
| SkPoint pos = *posCursor++; |
| const SkGlyph& glyph = strike->getGlyphMetrics(glyphID, pos); |
| fGlyphPos[glyphCount++] = {&glyph, pos}; |
| } |
| |
| processDevice(SkSpan<const GlyphAndPos>{fGlyphPos, SkTo<size_t>(glyphCount)}, strike.get()); |
| |
| } else { |
| // If the matrix is complicated or if scaling is used to fit the glyphs in the cache, |
| // then this case is used. |
| |
| // Subtract 2 to account for the bilerp pad around the glyph |
| SkScalar maxAtlasDimension = SkStrikeCommon::kSkSideTooBigForAtlas - 2; |
| |
| SkScalar runFontTextSize = runFont.getSize(); |
| |
| // Scale the text size down so the long side of all the glyphs will fit in the atlas. |
| SkScalar reducedTextSize = |
| (maxAtlasDimension / conservativeMaxGlyphDimension) * runFontTextSize; |
| |
| // If there's a glyph in the font that's particularly large, it's possible |
| // that fScaledFallbackTextSize may end up minimizing too much. We'd rather skip |
| // that glyph than make the others blurry, so we set a minimum size of half the |
| // maximum text size to avoid this case. |
| SkScalar fallbackTextSize = |
| SkScalarFloorToScalar(std::max(reducedTextSize, 0.5f * runFontTextSize)); |
| |
| // Don't allow the text size to get too big. This will also improve glyph cache hit rate |
| // for larger text sizes. |
| fallbackTextSize = std::min(fallbackTextSize, 256.0f); |
| |
| SkFont fallbackFont{runFont}; |
| fallbackFont.setSize(fallbackTextSize); |
| |
| // The scale factor to go from strike size to the source size for glyphs. |
| SkScalar fallbackTextScale = runFontTextSize / fallbackTextSize; |
| |
| SkAutoDescriptor ad; |
| SkScalerContextEffects effects; |
| SkScalerContext::CreateDescriptorAndEffectsUsingPaint(fallbackFont, |
| runPaint, |
| fDeviceProps, |
| fScalerContextFlags, |
| SkMatrix::I(), |
| &ad, |
| &effects); |
| |
| SkScopedStrike strike = |
| fStrikeCache->findOrCreateScopedStrike( |
| *ad.getDesc(), effects, *fallbackFont.getTypefaceOrDefault()); |
| |
| SkPoint* posCursor = fARGBPositions.data(); |
| int glyphCount = 0; |
| for (SkGlyphID glyphID : fARGBGlyphsIDs) { |
| SkPoint pos = *posCursor++; |
| const SkGlyph& glyph = strike->getGlyphMetrics(glyphID, pos); |
| fGlyphPos[glyphCount++] = {&glyph, pos}; |
| } |
| |
| processSource(SkSpan<const GlyphAndPos>{fGlyphPos, SkTo<size_t>(glyphCount)}, |
| strike.get(), |
| fallbackTextScale, |
| viewMatrix.hasPerspective()); |
| } |
| } |
| |
| // Beware! The following code will end up holding two glyph caches at the same time, but they |
| // will not be the same cache (which would cause two separate caches to be created). |
| template<typename ProcessPathsT, typename ProcessDeviceT, typename ProcessSourceT> |
| void SkGlyphRunListPainter::drawGlyphRunAsPathWithARGBFallback( |
| const SkPaint& runPaint, const SkFont& runFont, |
| const SkGlyphRun& glyphRun, SkPoint origin, const SkMatrix& viewMatrix, |
| ProcessPathsT&& processPaths, ProcessDeviceT&& processDevice, |
| ProcessSourceT&& processSource) { |
| fARGBGlyphsIDs.clear(); |
| fARGBPositions.clear(); |
| ScopedBuffers _ = this->ensureBuffers(glyphRun); |
| SkScalar maxFallbackDimension{-SK_ScalarInfinity}; |
| |
| // setup our std runPaint, in hopes of getting hits in the cache |
| SkPaint pathPaint{runPaint}; |
| SkFont pathFont{runFont}; |
| |
| // The factor to get from the size stored in the strike to the size needed for the source. |
| SkScalar strikeToSourceRatio = pathFont.setupForAsPaths(&pathPaint); |
| |
| SkAutoDescriptor ad; |
| SkScalerContextEffects effects; |
| SkScalerContext::CreateDescriptorAndEffectsUsingPaint( |
| pathFont, pathPaint, fDeviceProps, fScalerContextFlags, SkMatrix::I(), &ad, &effects); |
| |
| { |
| SkScopedStrike strike = |
| fStrikeCache->findOrCreateScopedStrike( |
| *ad.getDesc(), effects,*pathFont.getTypefaceOrDefault()); |
| |
| int glyphCount = 0; |
| const SkPoint* positionCursor = glyphRun.positions().data(); |
| for (auto glyphID : glyphRun.glyphsIDs()) { |
| SkPoint glyphPos = origin + *positionCursor++; |
| |
| // Use outline from {0, 0} because all transforms including subpixel translation happen |
| // during drawing. |
| const SkGlyph& glyph = strike->getGlyphMetrics(glyphID, {0, 0}); |
| if (!glyph.isEmpty()) { |
| if (glyph.fMaskFormat != SkMask::kARGB32_Format) { |
| if (strike->decideCouldDrawFromPath(glyph)) { |
| fGlyphPos[glyphCount++] = {&glyph, glyphPos}; |
| } |
| } else { |
| SkScalar largestDimension = std::max(glyph.fWidth, glyph.fHeight); |
| maxFallbackDimension = std::max(maxFallbackDimension, largestDimension); |
| fARGBGlyphsIDs.push_back(glyphID); |
| fARGBPositions.push_back(glyphPos); |
| } |
| } |
| } |
| |
| if (glyphCount > 0) { |
| processPaths(SkSpan<const GlyphAndPos>{fGlyphPos, SkTo<size_t>(glyphCount)}, |
| strike.get(), |
| strikeToSourceRatio); |
| } |
| } |
| |
| { |
| // fGlyphPos will be reused here. |
| if (!fARGBGlyphsIDs.empty()) { |
| this->processARGBFallback( |
| maxFallbackDimension, runPaint, glyphRun.font(), viewMatrix, |
| strikeToSourceRatio, |
| std::forward<ProcessDeviceT>(processDevice), |
| std::forward<ProcessSourceT>(processSource)); |
| } |
| } |
| } |
| |
| template <typename MasksT, typename PathsT> |
| void SkGlyphRunListPainter::drawGlyphRunAsBMPWithPathFallback( |
| const SkPaint& paint, const SkFont& font, |
| const SkGlyphRun& glyphRun, SkPoint origin, const SkMatrix& deviceMatrix, |
| MasksT&& processMasks, PathsT&& processPaths) { |
| |
| SkAutoDescriptor ad; |
| SkScalerContextEffects effects; |
| |
| SkScalerContext::CreateDescriptorAndEffectsUsingPaint( |
| font, paint, fDeviceProps, fScalerContextFlags, deviceMatrix, &ad, &effects); |
| |
| SkTypeface* typeface = font.getTypefaceOrDefault(); |
| SkScopedStrike strike = |
| fStrikeCache->findOrCreateScopedStrike(*ad.getDesc(), effects, *typeface); |
| |
| ScopedBuffers _ = this->ensureBuffers(glyphRun); |
| |
| SkMatrix mapping = deviceMatrix; |
| mapping.preTranslate(origin.x(), origin.y()); |
| SkVector rounding = strike->rounding(); |
| mapping.postTranslate(rounding.x(), rounding.y()); |
| mapping.mapPoints(fPositions, glyphRun.positions().data(), glyphRun.runSize()); |
| |
| int glyphCount = 0; |
| const SkPoint* posCursor = fPositions; |
| for (auto glyphID : glyphRun.glyphsIDs()) { |
| SkPoint mappedPt = *posCursor++; |
| |
| if (SkScalarsAreFinite(mappedPt.x(), mappedPt.y())) { |
| const SkGlyph& glyph = strike->getGlyphMetrics(glyphID, mappedPt); |
| if (!glyph.isEmpty()) { |
| if (SkStrikeCommon::GlyphTooBigForAtlas(glyph)) { |
| if (strike->decideCouldDrawFromPath(glyph)) { |
| fPaths.push_back({&glyph, mappedPt}); |
| } |
| } else { |
| // If the glyph is not empty, then it will have a pointer to mask data. |
| fGlyphPos[glyphCount++] = {&glyph, mappedPt}; |
| } |
| } |
| } |
| } |
| |
| if (glyphCount > 0) { |
| mapping.mapPoints(fPositions, glyphCount); |
| processMasks(SkSpan<const GlyphAndPos>{fGlyphPos, SkTo<size_t>(glyphCount)}, strike.get()); |
| } |
| if (!fPaths.empty()) { |
| processPaths(SkSpan<const GlyphAndPos>{fPaths}); |
| } |
| } |
| |
| #if SK_SUPPORT_GPU |
| template <typename ProcessMasksT, typename ProcessPathsT, |
| typename ProcessDeviceT, typename ProcessSourceT> |
| void SkGlyphRunListPainter::drawGlyphRunAsSDFWithARGBFallback( |
| const SkPaint& runPaint, const SkFont& runFont, |
| const SkGlyphRun& glyphRun, SkPoint origin, const SkMatrix& viewMatrix, |
| const GrTextContext::Options& options, |
| ProcessMasksT&& processMasks, ProcessPathsT&& processPaths, |
| ProcessDeviceT&& processDevice, ProcessSourceT&& processSource) { |
| fARGBGlyphsIDs.clear(); |
| fARGBPositions.clear(); |
| ScopedBuffers _ = this->ensureBuffers(glyphRun); |
| SkScalar maxFallbackDimension{-SK_ScalarInfinity}; |
| |
| // Setup distance field runPaint and text ratio |
| SkPaint dfPaint = GrTextContext::InitDistanceFieldPaint(runPaint); |
| SkScalar textScale; |
| SkFont dfFont = GrTextContext::InitDistanceFieldFont( |
| runFont, viewMatrix, options, &textScale); |
| // Fake-gamma and subpixel antialiasing are applied in the shader, so we ignore the |
| // passed-in scaler context flags. (It's only used when we fall-back to bitmap text). |
| SkScalerContextFlags flags = SkScalerContextFlags::kNone; |
| |
| SkScalar minScale, maxScale; |
| std::tie(minScale, maxScale) = GrTextContext::InitDistanceFieldMinMaxScale( |
| runFont.getSize(), viewMatrix, options); |
| |
| SkAutoDescriptor ad; |
| SkScalerContextEffects effects; |
| SkScalerContext::CreateDescriptorAndEffectsUsingPaint( |
| dfFont, dfPaint, fDeviceProps, flags, SkMatrix::I(), &ad, &effects); |
| SkScopedStrike strike = |
| fStrikeCache->findOrCreateScopedStrike( |
| *ad.getDesc(), effects, *dfFont.getTypefaceOrDefault()); |
| |
| std::vector<GlyphAndPos> paths; |
| |
| int glyphCount = 0; |
| const SkPoint* positionCursor = glyphRun.positions().data(); |
| for (auto glyphID : glyphRun.glyphsIDs()) { |
| const SkGlyph& glyph = strike->getGlyphMetrics(glyphID, {0, 0}); |
| SkPoint glyphPos = origin + *positionCursor++; |
| if (!glyph.isEmpty()) { |
| if (glyph.fMaskFormat == SkMask::kSDF_Format) { |
| if (!SkStrikeCommon::GlyphTooBigForAtlas(glyph)) { |
| // If the glyph is not empty, then it will have a pointer to SDF data. |
| fGlyphPos[glyphCount++] = {&glyph, glyphPos}; |
| } else { |
| if (strike->decideCouldDrawFromPath(glyph)) { |
| paths.push_back({&glyph, glyphPos}); |
| } |
| } |
| } else { |
| SkASSERT(glyph.fMaskFormat == SkMask::kARGB32_Format); |
| SkScalar largestDimension = std::max(glyph.fWidth, glyph.fHeight); |
| maxFallbackDimension = std::max(maxFallbackDimension, largestDimension); |
| fARGBGlyphsIDs.push_back(glyphID); |
| fARGBPositions.push_back(glyphPos); |
| } |
| } |
| } |
| |
| if (glyphCount > 0) { |
| bool hasWCoord = viewMatrix.hasPerspective() |
| || options.fDistanceFieldVerticesAlwaysHaveW; |
| processMasks(SkSpan<const GlyphAndPos>{fGlyphPos, SkTo<size_t>(glyphCount)}, |
| strike.get(), runFont, textScale, minScale, maxScale, hasWCoord); |
| } |
| |
| if (!paths.empty()) { |
| processPaths(SkSpan<const GlyphAndPos>{paths}, strike.get(), textScale); |
| } |
| |
| { |
| // fGlyphPos will be reused here. |
| if (!fARGBGlyphsIDs.empty()) { |
| this->processARGBFallback( |
| maxFallbackDimension, runPaint, glyphRun.font(), viewMatrix, |
| textScale, |
| std::forward<ProcessDeviceT>(processDevice), |
| std::forward<ProcessSourceT>(processSource)); |
| } |
| } |
| } |
| #endif |
| |
| SkGlyphRunListPainter::ScopedBuffers |
| SkGlyphRunListPainter::ensureBuffers(const SkGlyphRunList& glyphRunList) { |
| size_t size = 0; |
| for (const SkGlyphRun& run : glyphRunList) { |
| size = std::max(run.runSize(), size); |
| } |
| return ScopedBuffers(this, size); |
| } |
| |
| SkGlyphRunListPainter::ScopedBuffers |
| SkGlyphRunListPainter::ensureBuffers(const SkGlyphRun& glyphRun) { |
| return ScopedBuffers(this, glyphRun.runSize()); |
| } |
| |
| #if SK_SUPPORT_GPU |
| // -- GrTextContext -------------------------------------------------------------------------------- |
| SkPMColor4f generate_filtered_color(const SkPaint& paint, const GrColorSpaceInfo& colorSpaceInfo) { |
| SkColor4f filteredColor = paint.getColor4f(); |
| if (auto* xform = colorSpaceInfo.colorSpaceXformFromSRGB()) { |
| filteredColor = xform->apply(filteredColor); |
| } |
| if (paint.getColorFilter() != nullptr) { |
| filteredColor = paint.getColorFilter()->filterColor4f(filteredColor, |
| colorSpaceInfo.colorSpace()); |
| } |
| return filteredColor.premul(); |
| } |
| |
| void GrTextContext::drawGlyphRunList( |
| GrRecordingContext* context, GrTextTarget* target, const GrClip& clip, |
| const SkMatrix& viewMatrix, const SkSurfaceProps& props, |
| const SkGlyphRunList& glyphRunList) { |
| SkPoint origin = glyphRunList.origin(); |
| |
| // Get the first paint to use as the key paint. |
| const SkPaint& listPaint = glyphRunList.paint(); |
| |
| SkPMColor4f filteredColor = generate_filtered_color(listPaint, target->colorSpaceInfo()); |
| GrColor color = generate_filtered_color(listPaint, target->colorSpaceInfo()).toBytes_RGBA(); |
| |
| // If we have been abandoned, then don't draw |
| if (context->priv().abandoned()) { |
| return; |
| } |
| |
| SkMaskFilterBase::BlurRec blurRec; |
| // It might be worth caching these things, but its not clear at this time |
| // TODO for animated mask filters, this will fill up our cache. We need a safeguard here |
| const SkMaskFilter* mf = listPaint.getMaskFilter(); |
| bool canCache = glyphRunList.canCache() && !(listPaint.getPathEffect() || |
| (mf && !as_MFB(mf)->asABlur(&blurRec))); |
| SkScalerContextFlags scalerContextFlags = ComputeScalerContextFlags(target->colorSpaceInfo()); |
| |
| auto grStrikeCache = context->priv().getGrStrikeCache(); |
| GrTextBlobCache* textBlobCache = context->priv().getTextBlobCache(); |
| |
| sk_sp<GrTextBlob> cacheBlob; |
| GrTextBlob::Key key; |
| if (canCache) { |
| bool hasLCD = glyphRunList.anyRunsLCD(); |
| |
| // We canonicalize all non-lcd draws to use kUnknown_SkPixelGeometry |
| SkPixelGeometry pixelGeometry = hasLCD ? props.pixelGeometry() : |
| kUnknown_SkPixelGeometry; |
| |
| // TODO we want to figure out a way to be able to use the canonical color on LCD text, |
| // see the note on ComputeCanonicalColor above. We pick a dummy value for LCD text to |
| // ensure we always match the same key |
| GrColor canonicalColor = hasLCD ? SK_ColorTRANSPARENT : |
| ComputeCanonicalColor(listPaint, hasLCD); |
| |
| key.fPixelGeometry = pixelGeometry; |
| key.fUniqueID = glyphRunList.uniqueID(); |
| key.fStyle = listPaint.getStyle(); |
| key.fHasBlur = SkToBool(mf); |
| key.fCanonicalColor = canonicalColor; |
| key.fScalerContextFlags = scalerContextFlags; |
| cacheBlob = textBlobCache->find(key); |
| } |
| |
| if (cacheBlob) { |
| if (cacheBlob->mustRegenerate(listPaint, glyphRunList.anyRunsSubpixelPositioned(), |
| blurRec, viewMatrix, origin.x(),origin.y())) { |
| // We have to remake the blob because changes may invalidate our masks. |
| // TODO we could probably get away reuse most of the time if the pointer is unique, |
| // but we'd have to clear the subrun information |
| textBlobCache->remove(cacheBlob.get()); |
| cacheBlob = textBlobCache->makeCachedBlob( |
| glyphRunList, key, blurRec, listPaint, color, grStrikeCache); |
| cacheBlob->generateFromGlyphRunList( |
| *context->priv().caps()->shaderCaps(), fOptions, |
| listPaint, scalerContextFlags, viewMatrix, props, |
| glyphRunList, target->glyphPainter()); |
| } else { |
| textBlobCache->makeMRU(cacheBlob.get()); |
| |
| if (CACHE_SANITY_CHECK) { |
| sk_sp<GrTextBlob> sanityBlob(textBlobCache->makeBlob( |
| glyphRunList, color, grStrikeCache)); |
| sanityBlob->setupKey(key, blurRec, listPaint); |
| cacheBlob->generateFromGlyphRunList( |
| *context->priv().caps()->shaderCaps(), fOptions, |
| listPaint, scalerContextFlags, viewMatrix, props, glyphRunList, |
| target->glyphPainter()); |
| GrTextBlob::AssertEqual(*sanityBlob, *cacheBlob); |
| } |
| } |
| } else { |
| if (canCache) { |
| cacheBlob = textBlobCache->makeCachedBlob( |
| glyphRunList, key, blurRec, listPaint, color, grStrikeCache); |
| } else { |
| cacheBlob = textBlobCache->makeBlob(glyphRunList, color, grStrikeCache); |
| } |
| cacheBlob->generateFromGlyphRunList( |
| *context->priv().caps()->shaderCaps(), fOptions, listPaint, |
| scalerContextFlags, viewMatrix, props, glyphRunList, |
| target->glyphPainter()); |
| } |
| |
| cacheBlob->flush(target, props, fDistanceAdjustTable.get(), listPaint, filteredColor, |
| clip, viewMatrix, origin.x(), origin.y()); |
| } |
| |
| void GrTextBlob::SubRun::appendGlyph(GrGlyph* glyph, SkRect dstRect) { |
| |
| this->joinGlyphBounds(dstRect); |
| |
| GrTextBlob* blob = fRun->fBlob; |
| |
| bool hasW = this->hasWCoord(); |
| // glyphs drawn in perspective must always have a w coord. |
| SkASSERT(hasW || !blob->fInitialViewMatrix.hasPerspective()); |
| auto maskFormat = this->maskFormat(); |
| size_t vertexStride = GetVertexStride(maskFormat, hasW); |
| |
| intptr_t vertex = reinterpret_cast<intptr_t>(blob->fVertices + fVertexEndIndex); |
| |
| // We always write the third position component used by SDFs. If it is unused it gets |
| // overwritten. Similarly, we always write the color and the blob will later overwrite it |
| // with texture coords if it is unused. |
| size_t colorOffset = hasW ? sizeof(SkPoint3) : sizeof(SkPoint); |
| // V0 |
| *reinterpret_cast<SkPoint3*>(vertex) = {dstRect.fLeft, dstRect.fTop, 1.f}; |
| *reinterpret_cast<GrColor*>(vertex + colorOffset) = fColor; |
| vertex += vertexStride; |
| |
| // V1 |
| *reinterpret_cast<SkPoint3*>(vertex) = {dstRect.fLeft, dstRect.fBottom, 1.f}; |
| *reinterpret_cast<GrColor*>(vertex + colorOffset) = fColor; |
| vertex += vertexStride; |
| |
| // V2 |
| *reinterpret_cast<SkPoint3*>(vertex) = {dstRect.fRight, dstRect.fTop, 1.f}; |
| *reinterpret_cast<GrColor*>(vertex + colorOffset) = fColor; |
| vertex += vertexStride; |
| |
| // V3 |
| *reinterpret_cast<SkPoint3*>(vertex) = {dstRect.fRight, dstRect.fBottom, 1.f}; |
| *reinterpret_cast<GrColor*>(vertex + colorOffset) = fColor; |
| |
| fVertexEndIndex += vertexStride * kVerticesPerGlyph; |
| blob->fGlyphs[fGlyphEndIndex++] = glyph; |
| } |
| |
| void GrTextBlob::Run::switchSubRunIfNeededAndAppendGlyph(GrGlyph* glyph, |
| const sk_sp<GrTextStrike>& strike, |
| const SkRect& destRect, |
| bool needsTransform) { |
| GrMaskFormat format = glyph->fMaskFormat; |
| |
| SubRun* subRun = &fSubRunInfo.back(); |
| if (fInitialized && subRun->maskFormat() != format) { |
| subRun = pushBackSubRun(fDescriptor, fColor); |
| subRun->setStrike(strike); |
| } else if (!fInitialized) { |
| subRun->setStrike(strike); |
| } |
| |
| fInitialized = true; |
| subRun->setMaskFormat(format); |
| subRun->setNeedsTransform(needsTransform); |
| subRun->appendGlyph(glyph, destRect); |
| } |
| |
| void GrTextBlob::Run::appendDeviceSpaceGlyph(const sk_sp<GrTextStrike>& strike, |
| const SkGlyph& skGlyph, SkPoint origin) { |
| if (GrGlyph* glyph = strike->getGlyph(skGlyph)) { |
| |
| SkRect glyphRect = glyph->destRect(origin); |
| |
| if (!glyphRect.isEmpty()) { |
| this->switchSubRunIfNeededAndAppendGlyph(glyph, strike, glyphRect, false); |
| } |
| } |
| } |
| |
| void GrTextBlob::Run::appendSourceSpaceGlyph(const sk_sp<GrTextStrike>& strike, |
| const SkGlyph& skGlyph, |
| SkPoint origin, |
| SkScalar textScale) { |
| if (GrGlyph* glyph = strike->getGlyph(skGlyph)) { |
| |
| SkRect glyphRect = glyph->destRect(origin, textScale); |
| |
| if (!glyphRect.isEmpty()) { |
| this->switchSubRunIfNeededAndAppendGlyph(glyph, strike, glyphRect, true); |
| } |
| } |
| } |
| |
| void GrTextBlob::generateFromGlyphRunList(const GrShaderCaps& shaderCaps, |
| const GrTextContext::Options& options, |
| const SkPaint& paint, |
| SkScalerContextFlags scalerContextFlags, |
| const SkMatrix& viewMatrix, |
| const SkSurfaceProps& props, |
| const SkGlyphRunList& glyphRunList, |
| SkGlyphRunListPainter* glyphPainter) { |
| SkPoint origin = glyphRunList.origin(); |
| const SkPaint& runPaint = glyphRunList.paint(); |
| this->initReusableBlob(SkPaintPriv::ComputeLuminanceColor(runPaint), viewMatrix, |
| origin.x(), origin.y()); |
| |
| for (const auto& glyphRun : glyphRunList) { |
| const SkFont& runFont = glyphRun.font(); |
| |
| bool useSDFT = GrTextContext::CanDrawAsDistanceFields( |
| runPaint, runFont, viewMatrix, props, shaderCaps.supportsDistanceFieldText(), |
| options); |
| |
| this->startRun(glyphRun, useSDFT); |
| |
| if (useSDFT) { |
| |
| auto processMasks = [this](SkSpan<const SkGlyphRunListPainter::GlyphAndPos> masks, |
| SkStrikeInterface* strike, |
| const SkFont& runFont, |
| SkScalar textScale, |
| SkScalar minScale, |
| SkScalar maxScale, |
| bool hasWCoord) { |
| this->processSDFTSource( |
| masks, strike, runFont, textScale, minScale, maxScale, hasWCoord); |
| }; |
| |
| auto processPaths = [this](SkSpan<const SkGlyphRunListPainter::GlyphAndPos> paths, |
| SkStrikeInterface* strike, SkScalar textScale) { |
| this->processPathsSource(paths, strike, textScale); |
| }; |
| |
| auto fallbackDevice = [this](SkSpan<const SkGlyphRunListPainter::GlyphAndPos> masks, |
| SkStrikeInterface* strike) { |
| this->processFallbackDevice(masks, strike); |
| }; |
| |
| auto fallbackSource = [this](SkSpan<const SkGlyphRunListPainter::GlyphAndPos> masks, |
| SkStrikeInterface* strike, |
| SkScalar strikeToSourceRatio, |
| bool hasW) { |
| this->processFallbackSource(masks, strike, strikeToSourceRatio, hasW); |
| }; |
| |
| glyphPainter->drawGlyphRunAsSDFWithARGBFallback( |
| runPaint, glyphRun.font(), |
| glyphRun, origin, viewMatrix, |
| options, |
| std::move(processMasks), std::move(processPaths), |
| std::move(fallbackDevice), std::move(fallbackSource)); |
| |
| } else if (SkGlyphRunListPainter::ShouldDrawAsPath(runPaint, runFont, viewMatrix)) { |
| // The glyphs are big, so use paths to draw them. |
| |
| auto processPaths = [this](SkSpan<const SkGlyphRunListPainter::GlyphAndPos> paths, |
| SkStrikeInterface* strike, SkScalar textScale) { |
| this->processPathsSource(paths, strike, textScale); |
| }; |
| |
| auto fallbackDevice = [this](SkSpan<const SkGlyphRunListPainter::GlyphAndPos> masks, |
| SkStrikeInterface* strike) { |
| this->processFallbackDevice(masks, strike); |
| }; |
| |
| auto fallbackSource = [this](SkSpan<const SkGlyphRunListPainter::GlyphAndPos> masks, |
| SkStrikeInterface* strike, |
| SkScalar strikeToSourceRatio, |
| bool hasW) { |
| this->processFallbackSource(masks, strike, strikeToSourceRatio, hasW); |
| }; |
| |
| glyphPainter->drawGlyphRunAsPathWithARGBFallback( |
| runPaint, runFont, |
| glyphRun, origin, viewMatrix, |
| std::move(processPaths), |
| std::move(fallbackDevice), std::move(fallbackSource)); |
| } else { |
| |
| auto processMasks = [this](SkSpan<const SkGlyphRunListPainter::GlyphAndPos> masks, |
| SkStrikeInterface* strike) { |
| this->processMasksDevice(masks, strike); |
| }; |
| |
| auto processPaths = [this] (SkSpan<const SkGlyphRunListPainter::GlyphAndPos> paths) { |
| this->processPathsDevice(paths); |
| }; |
| |
| glyphPainter->drawGlyphRunAsBMPWithPathFallback( |
| runPaint, runFont, |
| glyphRun, origin, viewMatrix, |
| std::move(processMasks), std::move(processPaths)); |
| } |
| } |
| } |
| |
| GrTextBlob::Run* GrTextBlob::currentRun() { |
| return &fRuns[fRunCount - 1]; |
| } |
| |
| void GrTextBlob::startRun(const SkGlyphRun& glyphRun, bool useSDFT) { |
| if (useSDFT) { |
| this->setHasDistanceField(); |
| } |
| Run* run = this->pushBackRun(); |
| run->setRunFontAntiAlias(glyphRun.font().hasSomeAntiAliasing()); |
| } |
| |
| void GrTextBlob::processMasksDevice(SkSpan<const SkGlyphRunListPainter::GlyphAndPos> masks, |
| SkStrikeInterface* strike) { |
| Run* run = this->currentRun(); |
| this->setHasBitmap(); |
| run->setupFont(strike->strikeSpec()); |
| sk_sp<GrTextStrike> currStrike = fStrikeCache->getStrike(strike->getDescriptor()); |
| for (const auto& mask : masks) { |
| SkPoint pt{SkScalarFloorToScalar(mask.position.fX), |
| SkScalarFloorToScalar(mask.position.fY)}; |
| run->appendDeviceSpaceGlyph(currStrike, *mask.glyph, pt); |
| } |
| } |
| |
| void GrTextBlob::processPathsSource(SkSpan<const SkGlyphRunListPainter::GlyphAndPos> paths, |
| SkStrikeInterface* strike, SkScalar textScale) { |
| Run* run = this->currentRun(); |
| this->setHasBitmap(); |
| run->setupFont(strike->strikeSpec()); |
| for (const auto& path : paths) { |
| if (const SkPath* glyphPath = path.glyph->path()) { |
| run->appendPathGlyph(*glyphPath, path.position, textScale, |
| false); |
| } |
| } |
| } |
| |
| void GrTextBlob::processPathsDevice(SkSpan<const SkGlyphRunListPainter::GlyphAndPos> paths) { |
| Run* run = this->currentRun(); |
| this->setHasBitmap(); |
| for (const auto& path : paths) { |
| SkPoint pt{SkScalarFloorToScalar(path.position.fX), |
| SkScalarFloorToScalar(path.position.fY)}; |
| // TODO: path should always be set. Remove when proven. |
| if (const SkPath* glyphPath = path.glyph->path()) { |
| run->appendPathGlyph(*glyphPath, pt, SK_Scalar1, true); |
| } |
| } |
| } |
| |
| void GrTextBlob::processSDFTSource(SkSpan<const SkGlyphRunListPainter::GlyphAndPos> masks, |
| SkStrikeInterface* strike, |
| const SkFont& runFont, |
| SkScalar textScale, |
| SkScalar minScale, |
| SkScalar maxScale, |
| bool hasWCoord) { |
| |
| Run* run = this->currentRun(); |
| run->setSubRunHasDistanceFields( |
| runFont.getEdging() == SkFont::Edging::kSubpixelAntiAlias, |
| runFont.hasSomeAntiAliasing(), |
| hasWCoord); |
| this->setHasDistanceField(); |
| this->setMinAndMaxScale(minScale, maxScale); |
| run->setupFont(strike->strikeSpec()); |
| sk_sp<GrTextStrike> currStrike = fStrikeCache->getStrike(strike->getDescriptor()); |
| for (const auto& mask : masks) { |
| run->appendSourceSpaceGlyph( |
| currStrike, *mask.glyph, mask.position, textScale); |
| } |
| } |
| |
| void GrTextBlob::processFallbackSource(SkSpan<const SkGlyphRunListPainter::GlyphAndPos> masks, |
| SkStrikeInterface* strike, SkScalar strikeToSourceRatio, |
| bool hasW) { |
| Run* run = this->currentRun(); |
| this->setHasBitmap(); |
| sk_sp<GrTextStrike> grStrike = |
| fStrikeCache->getStrike(strike->getDescriptor()); |
| auto subRun = run->initARGBFallback(); |
| run->setupFont(strike->strikeSpec()); |
| subRun->setStrike(grStrike); |
| subRun->setHasWCoord(hasW); |
| for (const auto& mask : masks) { |
| run->appendSourceSpaceGlyph |
| (grStrike, *mask.glyph, mask.position, strikeToSourceRatio); |
| } |
| } |
| |
| void GrTextBlob::processFallbackDevice(SkSpan<const SkGlyphRunListPainter::GlyphAndPos> masks, |
| SkStrikeInterface* strike) { |
| Run* run = this->currentRun(); |
| this->setHasBitmap(); |
| sk_sp<GrTextStrike> grStrike = fStrikeCache->getStrike(strike->getDescriptor()); |
| auto subRun = run->initARGBFallback(); |
| run->setupFont(strike->strikeSpec()); |
| subRun->setStrike(grStrike); |
| for (const auto& mask : masks) { |
| run->appendDeviceSpaceGlyph(grStrike, *mask.glyph, mask.position); |
| } |
| } |
| |
| |
| #if GR_TEST_UTILS |
| |
| #include "GrRenderTargetContext.h" |
| #include "GrRecordingContextPriv.h" |
| |
| std::unique_ptr<GrDrawOp> GrTextContext::createOp_TestingOnly(GrRecordingContext* context, |
| GrTextContext* textContext, |
| GrRenderTargetContext* rtc, |
| const SkPaint& skPaint, |
| const SkFont& font, |
| const SkMatrix& viewMatrix, |
| const char* text, |
| int x, |
| int y) { |
| auto direct = context->priv().asDirectContext(); |
| if (!direct) { |
| return nullptr; |
| } |
| |
| auto strikeCache = direct->priv().getGrStrikeCache(); |
| |
| static SkSurfaceProps surfaceProps(SkSurfaceProps::kLegacyFontHost_InitType); |
| |
| size_t textLen = (int)strlen(text); |
| |
| SkPMColor4f filteredColor = generate_filtered_color(skPaint, rtc->colorSpaceInfo()); |
| GrColor color = filteredColor.toBytes_RGBA(); |
| |
| auto origin = SkPoint::Make(x, y); |
| SkGlyphRunBuilder builder; |
| builder.drawTextUTF8(skPaint, font, text, textLen, origin); |
| |
| auto glyphRunList = builder.useGlyphRunList(); |
| sk_sp<GrTextBlob> blob; |
| if (!glyphRunList.empty()) { |
| blob = direct->priv().getTextBlobCache()->makeBlob(glyphRunList, color, strikeCache); |
| // Use the text and textLen below, because we don't want to mess with the paint. |
| SkScalerContextFlags scalerContextFlags = |
| ComputeScalerContextFlags(rtc->colorSpaceInfo()); |
| blob->generateFromGlyphRunList( |
| *context->priv().caps()->shaderCaps(), textContext->fOptions, |
| skPaint, scalerContextFlags, viewMatrix, surfaceProps, |
| glyphRunList, rtc->textTarget()->glyphPainter()); |
| } |
| |
| return blob->test_makeOp(textLen, 0, 0, viewMatrix, x, y, skPaint, filteredColor, surfaceProps, |
| textContext->dfAdjustTable(), rtc->textTarget()); |
| } |
| |
| #endif // GR_TEST_UTILS |
| #endif // SK_SUPPORT_GPU |
| |
| // -- SkTextBlobCacheDiffCanvas::TrackLayerDevice -------------------------------------------------- |
| |
| void SkTextBlobCacheDiffCanvas::TrackLayerDevice::processGlyphRun( |
| const SkPoint& origin, const SkGlyphRun& glyphRun, const SkPaint& runPaint) { |
| TRACE_EVENT0("skia", "SkTextBlobCacheDiffCanvas::processGlyphRun"); |
| |
| const SkMatrix& runMatrix = this->ctm(); |
| |
| // If the matrix has perspective, we fall back to using distance field text or paths. |
| #if SK_SUPPORT_GPU |
| if (this->maybeProcessGlyphRunForDFT(glyphRun, runMatrix, origin, runPaint)) { |
| return; |
| } else |
| #endif |
| if (SkGlyphRunListPainter::ShouldDrawAsPath(runPaint, glyphRun.font(), runMatrix)) { |
| this->processGlyphRunForPaths(glyphRun, runMatrix, origin, runPaint); |
| } else { |
| this->processGlyphRunForMask(glyphRun, runMatrix, origin, runPaint); |
| } |
| } |
| |
| void SkTextBlobCacheDiffCanvas::TrackLayerDevice::processGlyphRunForMask( |
| const SkGlyphRun& glyphRun, const SkMatrix& runMatrix, |
| SkPoint origin, const SkPaint& runPaint) { |
| TRACE_EVENT0("skia", "SkTextBlobCacheDiffCanvas::processGlyphRunForMask"); |
| |
| auto processMasks = [] ( |
| SkSpan<const SkGlyphRunListPainter::GlyphAndPos> masks, SkStrikeInterface*) { }; |
| |
| auto processPaths = [] (SkSpan<const SkGlyphRunListPainter::GlyphAndPos> paths) { }; |
| |
| fPainter.drawGlyphRunAsBMPWithPathFallback( |
| runPaint, glyphRun.font(), |
| glyphRun, origin, runMatrix, |
| std::move(processMasks), std::move(processPaths)); |
| } |
| |
| SkScalar SkTextBlobCacheDiffCanvas::SetupForPath(SkPaint* paint, SkFont* font) { |
| return font->setupForAsPaths(paint); |
| } |
| |
| void SkTextBlobCacheDiffCanvas::TrackLayerDevice::processGlyphRunForPaths( |
| const SkGlyphRun& glyphRun, const SkMatrix& runMatrix, |
| SkPoint origin, const SkPaint& runPaint) { |
| TRACE_EVENT0("skia", "SkTextBlobCacheDiffCanvas::processGlyphRunForPaths"); |
| |
| // This processor is empty because all changes to the cache are tracked through |
| // getGlyphMetrics and decideCouldDrawFromPath. |
| auto processPaths = []( |
| SkSpan<const SkGlyphRunListPainter::GlyphAndPos>, SkStrikeInterface*, SkScalar) { }; |
| |
| auto argbFallbackDevice = []( |
| SkSpan<const SkGlyphRunListPainter::GlyphAndPos> masks, SkStrikeInterface* strike) { }; |
| |
| auto argbFallbackSource = []( |
| SkSpan<const SkGlyphRunListPainter::GlyphAndPos> masks, |
| SkStrikeInterface* strike, |
| SkScalar strikeToSourceRatio, |
| bool hasW) { }; |
| |
| fPainter.drawGlyphRunAsPathWithARGBFallback( |
| runPaint, glyphRun.font(), |
| glyphRun, origin, runMatrix, |
| std::move(processPaths), std::move(argbFallbackDevice), std::move(argbFallbackSource)); |
| } |
| |
| #if SK_SUPPORT_GPU |
| bool SkTextBlobCacheDiffCanvas::TrackLayerDevice::maybeProcessGlyphRunForDFT( |
| const SkGlyphRun& glyphRun, const SkMatrix& runMatrix, |
| SkPoint origin, const SkPaint& runPaint) { |
| TRACE_EVENT0("skia", "SkTextBlobCacheDiffCanvas::maybeProcessGlyphRunForDFT"); |
| |
| const SkFont& runFont = glyphRun.font(); |
| |
| GrTextContext::Options options; |
| options.fMinDistanceFieldFontSize = fSettings.fMinDistanceFieldFontSize; |
| options.fMaxDistanceFieldFontSize = fSettings.fMaxDistanceFieldFontSize; |
| GrTextContext::SanitizeOptions(&options); |
| if (!GrTextContext::CanDrawAsDistanceFields(runPaint, runFont, |
| runMatrix, this->surfaceProps(), |
| fSettings.fContextSupportsDistanceFieldText, |
| options)) { |
| return false; |
| } |
| |
| auto processMasks = |
| [](SkSpan<const SkGlyphRunListPainter::GlyphAndPos> masks, |
| SkStrikeInterface* strike, |
| const SkFont& runFont, |
| SkScalar textScale, |
| SkScalar min, |
| SkScalar max, |
| bool hasWCoord) {}; |
| |
| auto processPaths = |
| [](SkSpan<const SkGlyphRunListPainter::GlyphAndPos> paths, |
| SkStrikeInterface* strike, SkScalar textScale) {}; |
| |
| auto argbFallbackDevice = []( |
| SkSpan<const SkGlyphRunListPainter::GlyphAndPos> masks, SkStrikeInterface* strike) { }; |
| |
| auto argbFallbackSource = []( |
| SkSpan<const SkGlyphRunListPainter::GlyphAndPos> masks, |
| SkStrikeInterface* strike, |
| SkScalar strikeToSourceRatio, |
| bool hasW) { }; |
| |
| fPainter.drawGlyphRunAsSDFWithARGBFallback( |
| runPaint, glyphRun.font(), |
| glyphRun, origin, runMatrix, options, |
| std::move(processMasks), std::move(processPaths), |
| std::move(argbFallbackDevice), std::move(argbFallbackSource)); |
| |
| return true; |
| } |
| #endif |
| |
| SkGlyphRunListPainter::ScopedBuffers::ScopedBuffers(SkGlyphRunListPainter* painter, int size) |
| : fPainter{painter} { |
| SkASSERT(size >= 0); |
| if (fPainter->fMaxRunSize < size) { |
| fPainter->fMaxRunSize = size; |
| |
| fPainter->fPositions.reset(size); |
| fPainter->fGlyphPos.reset(size); |
| } |
| } |
| |
| SkGlyphRunListPainter::ScopedBuffers::~ScopedBuffers() { |
| fPainter->fPaths.clear(); |
| fPainter->fARGBGlyphsIDs.clear(); |
| fPainter->fARGBPositions.clear(); |
| |
| if (fPainter->fMaxRunSize > 200) { |
| fPainter->fMaxRunSize = 0; |
| fPainter->fPositions.reset(); |
| fPainter->fGlyphPos.reset(); |
| fPainter->fPaths.shrink_to_fit(); |
| fPainter->fARGBGlyphsIDs.shrink_to_fit(); |
| fPainter->fARGBPositions.shrink_to_fit(); |
| } |
| } |
