| /* |
| * Copyright 2014 Google Inc. |
| * Copyright 2017 ARM Ltd. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "GrSmallPathRenderer.h" |
| |
| #include "GrBuffer.h" |
| #include "GrContext.h" |
| #include "GrDistanceFieldGenFromVector.h" |
| #include "GrDrawOpTest.h" |
| #include "GrOpFlushState.h" |
| #include "GrResourceProvider.h" |
| #include "GrSWMaskHelper.h" |
| #include "GrSimpleMeshDrawOpHelper.h" |
| #include "SkAutoMalloc.h" |
| #include "SkDistanceFieldGen.h" |
| #include "SkPathOps.h" |
| #include "effects/GrBitmapTextGeoProc.h" |
| #include "effects/GrDistanceFieldGeoProc.h" |
| #include "ops/GrMeshDrawOp.h" |
| |
| #define ATLAS_TEXTURE_WIDTH 2048 |
| #define ATLAS_TEXTURE_HEIGHT 2048 |
| #define PLOT_WIDTH 512 |
| #define PLOT_HEIGHT 256 |
| |
| #define NUM_PLOTS_X (ATLAS_TEXTURE_WIDTH / PLOT_WIDTH) |
| #define NUM_PLOTS_Y (ATLAS_TEXTURE_HEIGHT / PLOT_HEIGHT) |
| |
| #ifdef DF_PATH_TRACKING |
| static int g_NumCachedShapes = 0; |
| static int g_NumFreedShapes = 0; |
| #endif |
| |
| // mip levels |
| static const SkScalar kIdealMinMIP = 12; |
| static const SkScalar kMaxMIP = 162; |
| |
| static const SkScalar kMaxDim = 73; |
| static const SkScalar kMinSize = SK_ScalarHalf; |
| static const SkScalar kMaxSize = 2*kMaxMIP; |
| |
| // Callback to clear out internal path cache when eviction occurs |
| void GrSmallPathRenderer::HandleEviction(GrDrawOpAtlas::AtlasID id, void* pr) { |
| GrSmallPathRenderer* dfpr = (GrSmallPathRenderer*)pr; |
| // remove any paths that use this plot |
| ShapeDataList::Iter iter; |
| iter.init(dfpr->fShapeList, ShapeDataList::Iter::kHead_IterStart); |
| ShapeData* shapeData; |
| while ((shapeData = iter.get())) { |
| iter.next(); |
| if (id == shapeData->fID) { |
| dfpr->fShapeCache.remove(shapeData->fKey); |
| dfpr->fShapeList.remove(shapeData); |
| delete shapeData; |
| #ifdef DF_PATH_TRACKING |
| ++g_NumFreedPaths; |
| #endif |
| } |
| } |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| GrSmallPathRenderer::GrSmallPathRenderer() : fAtlas(nullptr) {} |
| |
| GrSmallPathRenderer::~GrSmallPathRenderer() { |
| ShapeDataList::Iter iter; |
| iter.init(fShapeList, ShapeDataList::Iter::kHead_IterStart); |
| ShapeData* shapeData; |
| while ((shapeData = iter.get())) { |
| iter.next(); |
| delete shapeData; |
| } |
| |
| #ifdef DF_PATH_TRACKING |
| SkDebugf("Cached shapes: %d, freed shapes: %d\n", g_NumCachedShapes, g_NumFreedShapes); |
| #endif |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| bool GrSmallPathRenderer::onCanDrawPath(const CanDrawPathArgs& args) const { |
| if (!args.fCaps->shaderCaps()->shaderDerivativeSupport()) { |
| return false; |
| } |
| // If the shape has no key then we won't get any reuse. |
| if (!args.fShape->hasUnstyledKey()) { |
| return false; |
| } |
| // This only supports filled paths, however, the caller may apply the style to make a filled |
| // path and try again. |
| if (!args.fShape->style().isSimpleFill()) { |
| return false; |
| } |
| // This does non-inverse coverage-based antialiased fills. |
| if (GrAAType::kCoverage != args.fAAType) { |
| return false; |
| } |
| // TODO: Support inverse fill |
| if (args.fShape->inverseFilled()) { |
| return false; |
| } |
| // currently don't support perspective |
| if (args.fViewMatrix->hasPerspective()) { |
| return false; |
| } |
| |
| // Only support paths with bounds within kMaxDim by kMaxDim, |
| // scaled to have bounds within kMaxSize by kMaxSize. |
| // The goal is to accelerate rendering of lots of small paths that may be scaling. |
| SkScalar scaleFactors[2]; |
| if (!args.fViewMatrix->getMinMaxScales(scaleFactors)) { |
| return false; |
| } |
| SkRect bounds = args.fShape->styledBounds(); |
| SkScalar minDim = SkMinScalar(bounds.width(), bounds.height()); |
| SkScalar maxDim = SkMaxScalar(bounds.width(), bounds.height()); |
| SkScalar minSize = minDim * SkScalarAbs(scaleFactors[0]); |
| SkScalar maxSize = maxDim * SkScalarAbs(scaleFactors[1]); |
| |
| return maxDim <= kMaxDim && kMinSize <= minSize && maxSize <= kMaxSize; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| // padding around path bounds to allow for antialiased pixels |
| static const SkScalar kAntiAliasPad = 1.0f; |
| |
| class GrSmallPathRenderer::SmallPathOp final : public GrMeshDrawOp { |
| private: |
| using Helper = GrSimpleMeshDrawOpHelperWithStencil; |
| |
| public: |
| DEFINE_OP_CLASS_ID |
| |
| using ShapeData = GrSmallPathRenderer::ShapeData; |
| using ShapeCache = SkTDynamicHash<ShapeData, ShapeData::Key>; |
| using ShapeDataList = GrSmallPathRenderer::ShapeDataList; |
| |
| static std::unique_ptr<GrDrawOp> Make(GrPaint&& paint, const GrShape& shape, |
| const SkMatrix& viewMatrix, GrDrawOpAtlas* atlas, |
| ShapeCache* shapeCache, ShapeDataList* shapeList, |
| bool gammaCorrect, |
| const GrUserStencilSettings* stencilSettings) { |
| return Helper::FactoryHelper<SmallPathOp>(std::move(paint), shape, viewMatrix, atlas, |
| shapeCache, shapeList, gammaCorrect, |
| stencilSettings); |
| } |
| |
| SmallPathOp(Helper::MakeArgs helperArgs, GrColor color, const GrShape& shape, |
| const SkMatrix& viewMatrix, GrDrawOpAtlas* atlas, ShapeCache* shapeCache, |
| ShapeDataList* shapeList, bool gammaCorrect, |
| const GrUserStencilSettings* stencilSettings) |
| : INHERITED(ClassID()), fHelper(helperArgs, GrAAType::kCoverage, stencilSettings) { |
| SkASSERT(shape.hasUnstyledKey()); |
| // Compute bounds |
| this->setTransformedBounds(shape.bounds(), viewMatrix, HasAABloat::kYes, IsZeroArea::kNo); |
| |
| #if defined(SK_BUILD_FOR_ANDROID) && !defined(SK_BUILD_FOR_ANDROID_FRAMEWORK) |
| fUsesDistanceField = true; |
| #else |
| // only use distance fields on desktop and Android framework to save space in the atlas |
| fUsesDistanceField = this->bounds().width() > kMaxMIP || this->bounds().height() > kMaxMIP; |
| #endif |
| fViewMatrix = viewMatrix; |
| SkVector translate = SkVector::Make(0, 0); |
| if (!fUsesDistanceField) { |
| // In this case we don't apply a view matrix, so we need to remove the non-subpixel |
| // translation and add it back when we generate the quad for the path |
| SkScalar translateX = viewMatrix.getTranslateX(); |
| SkScalar translateY = viewMatrix.getTranslateY(); |
| translate = SkVector::Make(SkScalarFloorToScalar(translateX), |
| SkScalarFloorToScalar(translateY)); |
| // Only store the fractional part of the translation in the view matrix |
| fViewMatrix.setTranslateX(translateX - translate.fX); |
| fViewMatrix.setTranslateY(translateY - translate.fY); |
| } |
| |
| fShapes.emplace_back(Entry{color, shape, translate}); |
| |
| fAtlas = atlas; |
| fShapeCache = shapeCache; |
| fShapeList = shapeList; |
| fGammaCorrect = gammaCorrect; |
| |
| } |
| |
| const char* name() const override { return "SmallPathOp"; } |
| |
| SkString dumpInfo() const override { |
| SkString string; |
| for (const auto& geo : fShapes) { |
| string.appendf("Color: 0x%08x\n", geo.fColor); |
| } |
| string += fHelper.dumpInfo(); |
| string += INHERITED::dumpInfo(); |
| return string; |
| } |
| |
| FixedFunctionFlags fixedFunctionFlags() const override { return fHelper.fixedFunctionFlags(); } |
| |
| RequiresDstTexture finalize(const GrCaps& caps, const GrAppliedClip* clip) override { |
| return fHelper.xpRequiresDstTexture(caps, clip, GrProcessorAnalysisCoverage::kSingleChannel, |
| &fShapes.front().fColor); |
| } |
| |
| private: |
| struct FlushInfo { |
| sk_sp<const GrBuffer> fVertexBuffer; |
| sk_sp<const GrBuffer> fIndexBuffer; |
| sk_sp<GrGeometryProcessor> fGeometryProcessor; |
| const GrPipeline* fPipeline; |
| int fVertexOffset; |
| int fInstancesToFlush; |
| }; |
| |
| void onPrepareDraws(Target* target) const override { |
| int instanceCount = fShapes.count(); |
| const SkMatrix& ctm = this->viewMatrix(); |
| |
| FlushInfo flushInfo; |
| flushInfo.fPipeline = fHelper.makePipeline(target); |
| // Setup GrGeometryProcessor |
| GrDrawOpAtlas* atlas = fAtlas; |
| if (fUsesDistanceField) { |
| GrSamplerParams params(SkShader::kClamp_TileMode, GrSamplerParams::kBilerp_FilterMode); |
| |
| uint32_t flags = 0; |
| flags |= ctm.isScaleTranslate() ? kScaleOnly_DistanceFieldEffectFlag : 0; |
| flags |= ctm.isSimilarity() ? kSimilarity_DistanceFieldEffectFlag : 0; |
| flags |= fGammaCorrect ? kGammaCorrect_DistanceFieldEffectFlag : 0; |
| |
| flushInfo.fGeometryProcessor = GrDistanceFieldPathGeoProc::Make( |
| this->color(), this->viewMatrix(), atlas->getProxy(), params, flags, |
| fHelper.usesLocalCoords()); |
| } else { |
| GrSamplerParams params(SkShader::kClamp_TileMode, GrSamplerParams::kNone_FilterMode); |
| |
| SkMatrix invert; |
| if (fHelper.usesLocalCoords()) { |
| if (!this->viewMatrix().invert(&invert)) { |
| SkDebugf("Could not invert viewmatrix\n"); |
| return; |
| } |
| // for local coords, we need to add the translation back in that we removed |
| // from the stored view matrix |
| invert.preTranslate(-fShapes[0].fTranslate.fX, -fShapes[0].fTranslate.fY); |
| } |
| |
| flushInfo.fGeometryProcessor = |
| GrBitmapTextGeoProc::Make(this->color(), atlas->getProxy(), params, |
| kA8_GrMaskFormat, invert, fHelper.usesLocalCoords()); |
| } |
| |
| // allocate vertices |
| size_t vertexStride = flushInfo.fGeometryProcessor->getVertexStride(); |
| SkASSERT(vertexStride == sizeof(SkPoint) + sizeof(GrColor) + 2*sizeof(uint16_t)); |
| |
| const GrBuffer* vertexBuffer; |
| void* vertices = target->makeVertexSpace(vertexStride, |
| kVerticesPerQuad * instanceCount, |
| &vertexBuffer, |
| &flushInfo.fVertexOffset); |
| flushInfo.fVertexBuffer.reset(SkRef(vertexBuffer)); |
| flushInfo.fIndexBuffer.reset(target->resourceProvider()->refQuadIndexBuffer()); |
| if (!vertices || !flushInfo.fIndexBuffer) { |
| SkDebugf("Could not allocate vertices\n"); |
| return; |
| } |
| |
| flushInfo.fInstancesToFlush = 0; |
| // Pointer to the next set of vertices to write. |
| intptr_t offset = reinterpret_cast<intptr_t>(vertices); |
| for (int i = 0; i < instanceCount; i++) { |
| const Entry& args = fShapes[i]; |
| |
| ShapeData* shapeData; |
| SkScalar maxScale; |
| if (fUsesDistanceField) { |
| // get mip level |
| maxScale = SkScalarAbs(this->viewMatrix().getMaxScale()); |
| const SkRect& bounds = args.fShape.bounds(); |
| SkScalar maxDim = SkMaxScalar(bounds.width(), bounds.height()); |
| // We try to create the DF at a 2^n scaled path resolution (1/2, 1, 2, 4, etc.) |
| // In the majority of cases this will yield a crisper rendering. |
| SkScalar mipScale = 1.0f; |
| // Our mipscale is the maxScale clamped to the next highest power of 2 |
| if (maxScale <= SK_ScalarHalf) { |
| SkScalar log = SkScalarFloorToScalar(SkScalarLog2(SkScalarInvert(maxScale))); |
| mipScale = SkScalarPow(2, -log); |
| } else if (maxScale > SK_Scalar1) { |
| SkScalar log = SkScalarCeilToScalar(SkScalarLog2(maxScale)); |
| mipScale = SkScalarPow(2, log); |
| } |
| SkASSERT(maxScale <= mipScale); |
| |
| SkScalar mipSize = mipScale*SkScalarAbs(maxDim); |
| // For sizes less than kIdealMinMIP we want to use as large a distance field as we can |
| // so we can preserve as much detail as possible. However, we can't scale down more |
| // than a 1/4 of the size without artifacts. So the idea is that we pick the mipsize |
| // just bigger than the ideal, and then scale down until we are no more than 4x the |
| // original mipsize. |
| if (mipSize < kIdealMinMIP) { |
| SkScalar newMipSize = mipSize; |
| do { |
| newMipSize *= 2; |
| } while (newMipSize < kIdealMinMIP); |
| while (newMipSize > 4 * mipSize) { |
| newMipSize *= 0.25f; |
| } |
| mipSize = newMipSize; |
| } |
| SkScalar desiredDimension = SkTMin(mipSize, kMaxMIP); |
| |
| // check to see if df path is cached |
| ShapeData::Key key(args.fShape, SkScalarCeilToInt(desiredDimension)); |
| shapeData = fShapeCache->find(key); |
| if (nullptr == shapeData || !atlas->hasID(shapeData->fID)) { |
| // Remove the stale cache entry |
| if (shapeData) { |
| fShapeCache->remove(shapeData->fKey); |
| fShapeList->remove(shapeData); |
| delete shapeData; |
| } |
| SkScalar scale = desiredDimension / maxDim; |
| |
| shapeData = new ShapeData; |
| if (!this->addDFPathToAtlas(target, |
| &flushInfo, |
| atlas, |
| shapeData, |
| args.fShape, |
| SkScalarCeilToInt(desiredDimension), |
| scale)) { |
| delete shapeData; |
| continue; |
| } |
| } |
| } else { |
| // check to see if bitmap path is cached |
| ShapeData::Key key(args.fShape, this->viewMatrix()); |
| shapeData = fShapeCache->find(key); |
| if (nullptr == shapeData || !atlas->hasID(shapeData->fID)) { |
| // Remove the stale cache entry |
| if (shapeData) { |
| fShapeCache->remove(shapeData->fKey); |
| fShapeList->remove(shapeData); |
| delete shapeData; |
| } |
| |
| shapeData = new ShapeData; |
| if (!this->addBMPathToAtlas(target, |
| &flushInfo, |
| atlas, |
| shapeData, |
| args.fShape, |
| this->viewMatrix())) { |
| delete shapeData; |
| continue; |
| } |
| } |
| maxScale = 1; |
| } |
| |
| atlas->setLastUseToken(shapeData->fID, target->nextDrawToken()); |
| |
| this->writePathVertices(target, |
| atlas, |
| offset, |
| args.fColor, |
| vertexStride, |
| maxScale, |
| args.fTranslate, |
| shapeData); |
| offset += kVerticesPerQuad * vertexStride; |
| flushInfo.fInstancesToFlush++; |
| } |
| |
| this->flush(target, &flushInfo); |
| } |
| |
| bool addDFPathToAtlas(GrMeshDrawOp::Target* target, FlushInfo* flushInfo, |
| GrDrawOpAtlas* atlas, ShapeData* shapeData, const GrShape& shape, |
| uint32_t dimension, SkScalar scale) const { |
| const SkRect& bounds = shape.bounds(); |
| |
| // generate bounding rect for bitmap draw |
| SkRect scaledBounds = bounds; |
| // scale to mip level size |
| scaledBounds.fLeft *= scale; |
| scaledBounds.fTop *= scale; |
| scaledBounds.fRight *= scale; |
| scaledBounds.fBottom *= scale; |
| // subtract out integer portion of origin |
| // (SDF created will be placed with fractional offset burnt in) |
| SkScalar dx = SkScalarFloorToScalar(scaledBounds.fLeft); |
| SkScalar dy = SkScalarFloorToScalar(scaledBounds.fTop); |
| scaledBounds.offset(-dx, -dy); |
| // get integer boundary |
| SkIRect devPathBounds; |
| scaledBounds.roundOut(&devPathBounds); |
| // pad to allow room for antialiasing |
| const int intPad = SkScalarCeilToInt(kAntiAliasPad); |
| // place devBounds at origin |
| int width = devPathBounds.width() + 2*intPad; |
| int height = devPathBounds.height() + 2*intPad; |
| devPathBounds = SkIRect::MakeWH(width, height); |
| |
| // draw path to bitmap |
| SkMatrix drawMatrix; |
| drawMatrix.setScale(scale, scale); |
| drawMatrix.postTranslate(intPad - dx, intPad - dy); |
| |
| SkASSERT(devPathBounds.fLeft == 0); |
| SkASSERT(devPathBounds.fTop == 0); |
| SkASSERT(devPathBounds.width() > 0); |
| SkASSERT(devPathBounds.height() > 0); |
| |
| // setup signed distance field storage |
| SkIRect dfBounds = devPathBounds.makeOutset(SK_DistanceFieldPad, SK_DistanceFieldPad); |
| width = dfBounds.width(); |
| height = dfBounds.height(); |
| // TODO We should really generate this directly into the plot somehow |
| SkAutoSMalloc<1024> dfStorage(width * height * sizeof(unsigned char)); |
| |
| SkPath path; |
| shape.asPath(&path); |
| #ifndef SK_USE_LEGACY_DISTANCE_FIELDS |
| // Generate signed distance field directly from SkPath |
| bool succeed = GrGenerateDistanceFieldFromPath((unsigned char*)dfStorage.get(), |
| path, drawMatrix, |
| width, height, width * sizeof(unsigned char)); |
| if (!succeed) { |
| #endif |
| // setup bitmap backing |
| SkAutoPixmapStorage dst; |
| if (!dst.tryAlloc(SkImageInfo::MakeA8(devPathBounds.width(), |
| devPathBounds.height()))) { |
| return false; |
| } |
| sk_bzero(dst.writable_addr(), dst.getSafeSize()); |
| |
| // rasterize path |
| SkPaint paint; |
| paint.setStyle(SkPaint::kFill_Style); |
| paint.setAntiAlias(true); |
| |
| SkDraw draw; |
| sk_bzero(&draw, sizeof(draw)); |
| |
| SkRasterClip rasterClip; |
| rasterClip.setRect(devPathBounds); |
| draw.fRC = &rasterClip; |
| draw.fMatrix = &drawMatrix; |
| draw.fDst = dst; |
| |
| draw.drawPathCoverage(path, paint); |
| |
| // Generate signed distance field |
| SkGenerateDistanceFieldFromA8Image((unsigned char*)dfStorage.get(), |
| (const unsigned char*)dst.addr(), |
| dst.width(), dst.height(), dst.rowBytes()); |
| #ifndef SK_USE_LEGACY_DISTANCE_FIELDS |
| } |
| #endif |
| |
| // add to atlas |
| SkIPoint16 atlasLocation; |
| GrDrawOpAtlas::AtlasID id; |
| if (!atlas->addToAtlas(&id, target, width, height, dfStorage.get(), &atlasLocation)) { |
| this->flush(target, flushInfo); |
| if (!atlas->addToAtlas(&id, target, width, height, dfStorage.get(), &atlasLocation)) { |
| return false; |
| } |
| } |
| |
| // add to cache |
| shapeData->fKey.set(shape, dimension); |
| shapeData->fID = id; |
| |
| // set the bounds rect to the original bounds |
| shapeData->fBounds = bounds; |
| |
| // set up path to texture coordinate transform |
| shapeData->fScale = scale; |
| dx -= SK_DistanceFieldPad + kAntiAliasPad; |
| dy -= SK_DistanceFieldPad + kAntiAliasPad; |
| shapeData->fTranslate.fX = atlasLocation.fX - dx; |
| shapeData->fTranslate.fY = atlasLocation.fY - dy; |
| |
| fShapeCache->add(shapeData); |
| fShapeList->addToTail(shapeData); |
| #ifdef DF_PATH_TRACKING |
| ++g_NumCachedPaths; |
| #endif |
| return true; |
| } |
| |
| bool addBMPathToAtlas(GrMeshDrawOp::Target* target, FlushInfo* flushInfo, |
| GrDrawOpAtlas* atlas, ShapeData* shapeData, const GrShape& shape, |
| const SkMatrix& ctm) const { |
| const SkRect& bounds = shape.bounds(); |
| if (bounds.isEmpty()) { |
| return false; |
| } |
| SkMatrix drawMatrix(ctm); |
| drawMatrix.set(SkMatrix::kMTransX, SkScalarFraction(ctm.get(SkMatrix::kMTransX))); |
| drawMatrix.set(SkMatrix::kMTransY, SkScalarFraction(ctm.get(SkMatrix::kMTransY))); |
| SkRect shapeDevBounds; |
| drawMatrix.mapRect(&shapeDevBounds, bounds); |
| SkScalar dx = SkScalarFloorToScalar(shapeDevBounds.fLeft); |
| SkScalar dy = SkScalarFloorToScalar(shapeDevBounds.fTop); |
| |
| // get integer boundary |
| SkIRect devPathBounds; |
| shapeDevBounds.roundOut(&devPathBounds); |
| // pad to allow room for antialiasing |
| const int intPad = SkScalarCeilToInt(kAntiAliasPad); |
| // place devBounds at origin |
| int width = devPathBounds.width() + 2 * intPad; |
| int height = devPathBounds.height() + 2 * intPad; |
| devPathBounds = SkIRect::MakeWH(width, height); |
| SkScalar translateX = intPad - dx; |
| SkScalar translateY = intPad - dy; |
| |
| SkASSERT(devPathBounds.fLeft == 0); |
| SkASSERT(devPathBounds.fTop == 0); |
| SkASSERT(devPathBounds.width() > 0); |
| SkASSERT(devPathBounds.height() > 0); |
| |
| SkPath path; |
| shape.asPath(&path); |
| // setup bitmap backing |
| SkAutoPixmapStorage dst; |
| if (!dst.tryAlloc(SkImageInfo::MakeA8(devPathBounds.width(), |
| devPathBounds.height()))) { |
| return false; |
| } |
| sk_bzero(dst.writable_addr(), dst.getSafeSize()); |
| |
| // rasterize path |
| SkPaint paint; |
| paint.setStyle(SkPaint::kFill_Style); |
| paint.setAntiAlias(true); |
| |
| SkDraw draw; |
| sk_bzero(&draw, sizeof(draw)); |
| |
| SkRasterClip rasterClip; |
| rasterClip.setRect(devPathBounds); |
| draw.fRC = &rasterClip; |
| drawMatrix.postTranslate(translateX, translateY); |
| draw.fMatrix = &drawMatrix; |
| draw.fDst = dst; |
| |
| draw.drawPathCoverage(path, paint); |
| |
| // add to atlas |
| SkIPoint16 atlasLocation; |
| GrDrawOpAtlas::AtlasID id; |
| if (!atlas->addToAtlas(&id, target, dst.width(), dst.height(), dst.addr(), |
| &atlasLocation)) { |
| this->flush(target, flushInfo); |
| if (!atlas->addToAtlas(&id, target, dst.width(), dst.height(), dst.addr(), |
| &atlasLocation)) { |
| return false; |
| } |
| } |
| |
| // add to cache |
| shapeData->fKey.set(shape, ctm); |
| shapeData->fID = id; |
| |
| // set the bounds rect to the original bounds |
| shapeData->fBounds = SkRect::Make(devPathBounds); |
| shapeData->fBounds.offset(-translateX, -translateY); |
| |
| // set up path to texture coordinate transform |
| shapeData->fScale = SK_Scalar1; |
| shapeData->fTranslate.fX = atlasLocation.fX + translateX; |
| shapeData->fTranslate.fY = atlasLocation.fY + translateY; |
| |
| fShapeCache->add(shapeData); |
| fShapeList->addToTail(shapeData); |
| #ifdef DF_PATH_TRACKING |
| ++g_NumCachedPaths; |
| #endif |
| return true; |
| } |
| |
| void writePathVertices(GrDrawOp::Target* target, |
| GrDrawOpAtlas* atlas, |
| intptr_t offset, |
| GrColor color, |
| size_t vertexStride, |
| SkScalar maxScale, |
| const SkVector& preTranslate, |
| const ShapeData* shapeData) const { |
| SkPoint* positions = reinterpret_cast<SkPoint*>(offset); |
| |
| SkRect bounds = shapeData->fBounds; |
| if (fUsesDistanceField) { |
| // outset bounds to include ~1 pixel of AA in device space |
| SkScalar outset = SkScalarInvert(maxScale); |
| bounds.outset(outset, outset); |
| } |
| |
| // vertex positions |
| // TODO make the vertex attributes a struct |
| positions->setRectFan(bounds.left() + preTranslate.fX, |
| bounds.top() + preTranslate.fY, |
| bounds.right() + preTranslate.fX, |
| bounds.bottom() + preTranslate.fY, |
| vertexStride); |
| |
| // colors |
| for (int i = 0; i < kVerticesPerQuad; i++) { |
| GrColor* colorPtr = (GrColor*)(offset + sizeof(SkPoint) + i * vertexStride); |
| *colorPtr = color; |
| } |
| |
| // set up texture coordinates |
| SkScalar texLeft = bounds.fLeft; |
| SkScalar texTop = bounds.fTop; |
| SkScalar texRight = bounds.fRight; |
| SkScalar texBottom = bounds.fBottom; |
| |
| // transform original path's bounds to texture space |
| SkScalar scale = shapeData->fScale; |
| const SkVector& translate = shapeData->fTranslate; |
| texLeft *= scale; |
| texTop *= scale; |
| texRight *= scale; |
| texBottom *= scale; |
| texLeft += translate.fX; |
| texTop += translate.fY; |
| texRight += translate.fX; |
| texBottom += translate.fY; |
| |
| // convert texcoords to unsigned short format |
| sk_sp<GrTextureProxy> proxy = atlas->getProxy(); |
| |
| // The proxy must be functionally exact for this normalization to work correctly |
| SkASSERT(GrResourceProvider::IsFunctionallyExact(proxy.get())); |
| SkScalar uFactor = 65535.f / proxy->width(); |
| SkScalar vFactor = 65535.f / proxy->height(); |
| uint16_t l = (uint16_t)(texLeft*uFactor); |
| uint16_t t = (uint16_t)(texTop*vFactor); |
| uint16_t r = (uint16_t)(texRight*uFactor); |
| uint16_t b = (uint16_t)(texBottom*vFactor); |
| |
| // set vertex texture coords |
| intptr_t textureCoordOffset = offset + sizeof(SkPoint) + sizeof(GrColor); |
| uint16_t* textureCoords = (uint16_t*) textureCoordOffset; |
| textureCoords[0] = l; |
| textureCoords[1] = t; |
| textureCoordOffset += vertexStride; |
| textureCoords = (uint16_t*)textureCoordOffset; |
| textureCoords[0] = l; |
| textureCoords[1] = b; |
| textureCoordOffset += vertexStride; |
| textureCoords = (uint16_t*)textureCoordOffset; |
| textureCoords[0] = r; |
| textureCoords[1] = b; |
| textureCoordOffset += vertexStride; |
| textureCoords = (uint16_t*)textureCoordOffset; |
| textureCoords[0] = r; |
| textureCoords[1] = t; |
| } |
| |
| void flush(GrMeshDrawOp::Target* target, FlushInfo* flushInfo) const { |
| if (flushInfo->fInstancesToFlush) { |
| GrMesh mesh(GrPrimitiveType::kTriangles); |
| int maxInstancesPerDraw = |
| static_cast<int>(flushInfo->fIndexBuffer->gpuMemorySize() / sizeof(uint16_t) / 6); |
| mesh.setIndexedPatterned(flushInfo->fIndexBuffer.get(), kIndicesPerQuad, |
| kVerticesPerQuad, flushInfo->fInstancesToFlush, |
| maxInstancesPerDraw); |
| mesh.setVertexData(flushInfo->fVertexBuffer.get(), flushInfo->fVertexOffset); |
| target->draw(flushInfo->fGeometryProcessor.get(), flushInfo->fPipeline, mesh); |
| flushInfo->fVertexOffset += kVerticesPerQuad * flushInfo->fInstancesToFlush; |
| flushInfo->fInstancesToFlush = 0; |
| } |
| } |
| |
| GrColor color() const { return fShapes[0].fColor; } |
| const SkMatrix& viewMatrix() const { return fViewMatrix; } |
| bool usesDistanceField() const { return fUsesDistanceField; } |
| |
| bool onCombineIfPossible(GrOp* t, const GrCaps& caps) override { |
| SmallPathOp* that = t->cast<SmallPathOp>(); |
| if (!fHelper.isCompatible(that->fHelper, caps, this->bounds(), that->bounds())) { |
| return false; |
| } |
| |
| if (this->usesDistanceField() != that->usesDistanceField()) { |
| return false; |
| } |
| |
| // TODO We can position on the cpu for distance field paths |
| if (!this->viewMatrix().cheapEqualTo(that->viewMatrix())) { |
| return false; |
| } |
| |
| if (!this->usesDistanceField() && fHelper.usesLocalCoords() && |
| !this->fShapes[0].fTranslate.equalsWithinTolerance(that->fShapes[0].fTranslate)) { |
| return false; |
| } |
| |
| fShapes.push_back_n(that->fShapes.count(), that->fShapes.begin()); |
| this->joinBounds(*that); |
| return true; |
| } |
| |
| SkMatrix fViewMatrix; |
| bool fUsesDistanceField; |
| |
| struct Entry { |
| GrColor fColor; |
| GrShape fShape; |
| SkVector fTranslate; |
| }; |
| |
| SkSTArray<1, Entry> fShapes; |
| Helper fHelper; |
| GrDrawOpAtlas* fAtlas; |
| ShapeCache* fShapeCache; |
| ShapeDataList* fShapeList; |
| bool fGammaCorrect; |
| |
| typedef GrMeshDrawOp INHERITED; |
| }; |
| |
| bool GrSmallPathRenderer::onDrawPath(const DrawPathArgs& args) { |
| GR_AUDIT_TRAIL_AUTO_FRAME(args.fRenderTargetContext->auditTrail(), |
| "GrSmallPathRenderer::onDrawPath"); |
| |
| // we've already bailed on inverse filled paths, so this is safe |
| SkASSERT(!args.fShape->isEmpty()); |
| SkASSERT(args.fShape->hasUnstyledKey()); |
| if (!fAtlas) { |
| fAtlas = GrDrawOpAtlas::Make(args.fContext, |
| kAlpha_8_GrPixelConfig, |
| ATLAS_TEXTURE_WIDTH, ATLAS_TEXTURE_HEIGHT, |
| NUM_PLOTS_X, NUM_PLOTS_Y, |
| &GrSmallPathRenderer::HandleEviction, |
| (void*)this); |
| if (!fAtlas) { |
| return false; |
| } |
| } |
| |
| std::unique_ptr<GrDrawOp> op = SmallPathOp::Make( |
| std::move(args.fPaint), *args.fShape, *args.fViewMatrix, fAtlas.get(), &fShapeCache, |
| &fShapeList, args.fGammaCorrect, args.fUserStencilSettings); |
| args.fRenderTargetContext->addDrawOp(*args.fClip, std::move(op)); |
| |
| return true; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| #if GR_TEST_UTILS |
| |
| struct GrSmallPathRenderer::PathTestStruct { |
| PathTestStruct() : fContextID(SK_InvalidGenID), fAtlas(nullptr) {} |
| ~PathTestStruct() { this->reset(); } |
| |
| void reset() { |
| ShapeDataList::Iter iter; |
| iter.init(fShapeList, ShapeDataList::Iter::kHead_IterStart); |
| ShapeData* shapeData; |
| while ((shapeData = iter.get())) { |
| iter.next(); |
| fShapeList.remove(shapeData); |
| delete shapeData; |
| } |
| fAtlas = nullptr; |
| fShapeCache.reset(); |
| } |
| |
| static void HandleEviction(GrDrawOpAtlas::AtlasID id, void* pr) { |
| PathTestStruct* dfpr = (PathTestStruct*)pr; |
| // remove any paths that use this plot |
| ShapeDataList::Iter iter; |
| iter.init(dfpr->fShapeList, ShapeDataList::Iter::kHead_IterStart); |
| ShapeData* shapeData; |
| while ((shapeData = iter.get())) { |
| iter.next(); |
| if (id == shapeData->fID) { |
| dfpr->fShapeCache.remove(shapeData->fKey); |
| dfpr->fShapeList.remove(shapeData); |
| delete shapeData; |
| } |
| } |
| } |
| |
| uint32_t fContextID; |
| std::unique_ptr<GrDrawOpAtlas> fAtlas; |
| ShapeCache fShapeCache; |
| ShapeDataList fShapeList; |
| }; |
| |
| GR_DRAW_OP_TEST_DEFINE(SmallPathOp) { |
| using PathTestStruct = GrSmallPathRenderer::PathTestStruct; |
| static PathTestStruct gTestStruct; |
| |
| if (context->uniqueID() != gTestStruct.fContextID) { |
| gTestStruct.fContextID = context->uniqueID(); |
| gTestStruct.reset(); |
| gTestStruct.fAtlas = GrDrawOpAtlas::Make(context, kAlpha_8_GrPixelConfig, |
| ATLAS_TEXTURE_WIDTH, ATLAS_TEXTURE_HEIGHT, |
| NUM_PLOTS_X, NUM_PLOTS_Y, |
| &PathTestStruct::HandleEviction, |
| (void*)&gTestStruct); |
| } |
| |
| SkMatrix viewMatrix = GrTest::TestMatrix(random); |
| bool gammaCorrect = random->nextBool(); |
| |
| // This path renderer only allows fill styles. |
| GrShape shape(GrTest::TestPath(random), GrStyle::SimpleFill()); |
| |
| return GrSmallPathRenderer::SmallPathOp::Make( |
| std::move(paint), shape, viewMatrix, gTestStruct.fAtlas.get(), &gTestStruct.fShapeCache, |
| &gTestStruct.fShapeList, gammaCorrect, GrGetRandomStencil(random, context)); |
| } |
| |
| #endif |
