| /* |
| * Copyright 2017 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "SkAtlasTextTarget.h" |
| |
| #include "GrClip.h" |
| #include "GrContextPriv.h" |
| #include "GrDrawingManager.h" |
| #include "GrMemoryPool.h" |
| #include "SkAtlasTextContext.h" |
| #include "SkAtlasTextFont.h" |
| #include "SkAtlasTextRenderer.h" |
| #include "SkGlyphRunPainter.h" |
| #include "SkGr.h" |
| #include "SkInternalAtlasTextContext.h" |
| #include "ops/GrAtlasTextOp.h" |
| #include "text/GrTextContext.h" |
| |
| static constexpr int kMaxBatchLookBack = 10; |
| |
| SkAtlasTextTarget::SkAtlasTextTarget(sk_sp<SkAtlasTextContext> context, int width, int height, |
| void* handle) |
| : fHandle(handle) |
| , fContext(std::move(context)) |
| , fWidth(width) |
| , fHeight(height) |
| , fMatrixStack(sizeof(SkMatrix), 4) |
| , fSaveCnt(0) { |
| fMatrixStack.push_back(); |
| this->accessCTM()->reset(); |
| } |
| |
| SkAtlasTextTarget::~SkAtlasTextTarget() { fContext->renderer()->targetDeleted(fHandle); } |
| |
| int SkAtlasTextTarget::save() { |
| const auto& currCTM = this->ctm(); |
| *static_cast<SkMatrix*>(fMatrixStack.push_back()) = currCTM; |
| return fSaveCnt++; |
| } |
| |
| void SkAtlasTextTarget::restore() { |
| if (fSaveCnt) { |
| fMatrixStack.pop_back(); |
| fSaveCnt--; |
| } |
| } |
| |
| void SkAtlasTextTarget::restoreToCount(int count) { |
| while (fSaveCnt > count) { |
| this->restore(); |
| } |
| } |
| |
| void SkAtlasTextTarget::translate(SkScalar dx, SkScalar dy) { |
| this->accessCTM()->preTranslate(dx, dy); |
| } |
| |
| void SkAtlasTextTarget::scale(SkScalar sx, SkScalar sy) { this->accessCTM()->preScale(sx, sy); } |
| |
| void SkAtlasTextTarget::rotate(SkScalar degrees) { this->accessCTM()->preRotate(degrees); } |
| |
| void SkAtlasTextTarget::rotate(SkScalar degrees, SkScalar px, SkScalar py) { |
| this->accessCTM()->preRotate(degrees, px, py); |
| } |
| |
| void SkAtlasTextTarget::skew(SkScalar sx, SkScalar sy) { this->accessCTM()->preSkew(sx, sy); } |
| |
| void SkAtlasTextTarget::concat(const SkMatrix& matrix) { this->accessCTM()->preConcat(matrix); } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| static const GrColorSpaceInfo kColorSpaceInfo(nullptr, kRGBA_8888_GrPixelConfig); |
| static const SkSurfaceProps kProps( |
| SkSurfaceProps::kUseDistanceFieldFonts_Flag, kUnknown_SkPixelGeometry); |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| class SkInternalAtlasTextTarget : public GrTextTarget, public SkAtlasTextTarget { |
| public: |
| SkInternalAtlasTextTarget(sk_sp<SkAtlasTextContext> context, |
| int width, int height, |
| void* handle) |
| : GrTextTarget(width, height, kColorSpaceInfo) |
| , SkAtlasTextTarget(std::move(context), width, height, handle) |
| , fGlyphPainter(kProps, kColorSpaceInfo) { |
| fOpMemoryPool = fContext->internal().grContext()->priv().refOpMemoryPool(); |
| } |
| |
| ~SkInternalAtlasTextTarget() override { |
| this->deleteOps(); |
| } |
| |
| /** GrTextTarget overrides */ |
| |
| void addDrawOp(const GrClip&, std::unique_ptr<GrAtlasTextOp> op) override; |
| |
| void drawShape(const GrClip&, const SkPaint&, const SkMatrix& viewMatrix, |
| const GrShape&) override { |
| SkDebugf("Path glyph??"); |
| } |
| |
| void makeGrPaint(GrMaskFormat, const SkPaint& skPaint, const SkMatrix&, |
| GrPaint* grPaint) override { |
| grPaint->setColor4f(skPaint.getColor4f().premul()); |
| } |
| |
| GrContext* getContext() override { |
| return this->context()->internal().grContext(); |
| } |
| |
| SkGlyphRunListPainter* glyphPainter() override { |
| return &fGlyphPainter; |
| } |
| |
| /** SkAtlasTextTarget overrides */ |
| |
| void drawText(const SkGlyphID[], const SkPoint[], int glyphCnt, uint32_t color, |
| const SkAtlasTextFont&) override; |
| void flush() override; |
| |
| private: |
| void deleteOps(); |
| |
| uint32_t fColor; |
| using SkAtlasTextTarget::fWidth; |
| using SkAtlasTextTarget::fHeight; |
| SkTArray<std::unique_ptr<GrAtlasTextOp>, true> fOps; |
| sk_sp<GrOpMemoryPool> fOpMemoryPool; |
| SkGlyphRunListPainter fGlyphPainter; |
| }; |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| std::unique_ptr<SkAtlasTextTarget> SkAtlasTextTarget::Make(sk_sp<SkAtlasTextContext> context, |
| int width, int height, void* handle) { |
| return std::unique_ptr<SkAtlasTextTarget>( |
| new SkInternalAtlasTextTarget(std::move(context), width, height, handle)); |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| void SkInternalAtlasTextTarget::drawText(const SkGlyphID glyphs[], const SkPoint positions[], |
| int glyphCnt, uint32_t color, |
| const SkAtlasTextFont& font) { |
| SkPaint paint; |
| paint.setAntiAlias(true); |
| |
| // The atlas text context does munging of the paint color. We store the client's color here |
| // and then overwrite the generated op's color when addDrawOp() is called. |
| fColor = color; |
| |
| SkSurfaceProps props(SkSurfaceProps::kUseDistanceFieldFonts_Flag, kUnknown_SkPixelGeometry); |
| auto grContext = this->context()->internal().grContext(); |
| auto atlasTextContext = grContext->priv().drawingManager()->getTextContext(); |
| SkGlyphRunBuilder builder; |
| builder.drawGlyphsWithPositions(paint, font.makeFont(), |
| SkSpan<const SkGlyphID>{glyphs, SkTo<size_t>(glyphCnt)}, |
| positions); |
| auto glyphRunList = builder.useGlyphRunList(); |
| if (!glyphRunList.empty()) { |
| atlasTextContext->drawGlyphRunList(grContext, this, GrNoClip(), this->ctm(), props, |
| glyphRunList); |
| } |
| } |
| |
| void SkInternalAtlasTextTarget::addDrawOp(const GrClip& clip, std::unique_ptr<GrAtlasTextOp> op) { |
| SkASSERT(clip.quickContains(SkRect::MakeIWH(fWidth, fHeight))); |
| // The SkAtlasTextRenderer currently only handles grayscale SDF glyphs. |
| if (op->maskType() != GrAtlasTextOp::kGrayscaleDistanceField_MaskType) { |
| return; |
| } |
| const GrCaps& caps = *this->context()->internal().grContext()->priv().caps(); |
| op->finalizeForTextTarget(fColor, caps); |
| int n = SkTMin(kMaxBatchLookBack, fOps.count()); |
| for (int i = 0; i < n; ++i) { |
| GrAtlasTextOp* other = fOps.fromBack(i).get(); |
| if (other->combineIfPossible(op.get(), caps) == GrOp::CombineResult::kMerged) { |
| fOpMemoryPool->release(std::move(op)); |
| return; |
| } |
| if (GrRectsOverlap(op->bounds(), other->bounds())) { |
| break; |
| } |
| } |
| fOps.emplace_back(std::move(op)); |
| } |
| |
| void SkInternalAtlasTextTarget::deleteOps() { |
| for (int i = 0; i < fOps.count(); ++i) { |
| if (fOps[i]) { |
| fOpMemoryPool->release(std::move(fOps[i])); |
| } |
| } |
| fOps.reset(); |
| } |
| |
| void SkInternalAtlasTextTarget::flush() { |
| for (int i = 0; i < fOps.count(); ++i) { |
| fOps[i]->executeForTextTarget(this); |
| } |
| this->context()->internal().flush(); |
| this->deleteOps(); |
| } |
| |
| void GrAtlasTextOp::finalizeForTextTarget(uint32_t color, const GrCaps& caps) { |
| // TODO4F: Odd handling of client colors among AtlasTextTarget and AtlasTextRenderer |
| SkPMColor4f color4f = SkPMColor4f::FromBytes_RGBA(color); |
| for (int i = 0; i < fGeoCount; ++i) { |
| fGeoData[i].fColor = color4f; |
| } |
| // Atlas text doesn't use MSAA, so no need to handle a GrFSAAType. |
| this->finalize(caps, nullptr /* applied clip */, GrFSAAType::kNone); |
| } |
| |
| void GrAtlasTextOp::executeForTextTarget(SkAtlasTextTarget* target) { |
| FlushInfo flushInfo; |
| SkExclusiveStrikePtr autoGlyphCache; |
| auto& context = target->context()->internal(); |
| auto glyphCache = context.grContext()->priv().getGrStrikeCache(); |
| auto atlasManager = context.grContext()->priv().getAtlasManager(); |
| auto resourceProvider = context.grContext()->priv().resourceProvider(); |
| |
| unsigned int numProxies; |
| if (!atlasManager->getProxies(kA8_GrMaskFormat, &numProxies)) { |
| return; |
| } |
| |
| for (int i = 0; i < fGeoCount; ++i) { |
| // TODO4F: Preserve float colors |
| GrTextBlob::VertexRegenerator regenerator( |
| resourceProvider, fGeoData[i].fBlob, fGeoData[i].fRun, fGeoData[i].fSubRun, |
| fGeoData[i].fViewMatrix, fGeoData[i].fX, fGeoData[i].fY, |
| fGeoData[i].fColor.toBytes_RGBA(), &context, glyphCache, atlasManager, |
| &autoGlyphCache); |
| bool done = false; |
| while (!done) { |
| GrTextBlob::VertexRegenerator::Result result; |
| if (!regenerator.regenerate(&result)) { |
| break; |
| } |
| done = result.fFinished; |
| |
| context.recordDraw(result.fFirstVertex, result.fGlyphsRegenerated, |
| fGeoData[i].fViewMatrix, target->handle()); |
| if (!result.fFinished) { |
| // Make space in the atlas so we can continue generating vertices. |
| context.flush(); |
| } |
| } |
| } |
| } |