| /* |
| * Copyright 2011 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "GrDefaultPathRenderer.h" |
| |
| #include "GrBatch.h" |
| #include "GrBatchTarget.h" |
| #include "GrBufferAllocPool.h" |
| #include "GrContext.h" |
| #include "GrDefaultGeoProcFactory.h" |
| #include "GrPathUtils.h" |
| #include "GrPipelineBuilder.h" |
| #include "SkGeometry.h" |
| #include "SkString.h" |
| #include "SkStrokeRec.h" |
| #include "SkTLazy.h" |
| #include "SkTraceEvent.h" |
| |
| GrDefaultPathRenderer::GrDefaultPathRenderer(bool separateStencilSupport, |
| bool stencilWrapOpsSupport) |
| : fSeparateStencil(separateStencilSupport) |
| , fStencilWrapOps(stencilWrapOpsSupport) { |
| } |
| |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| // Stencil rules for paths |
| |
| ////// Even/Odd |
| |
| GR_STATIC_CONST_SAME_STENCIL(gEOStencilPass, |
| kInvert_StencilOp, |
| kKeep_StencilOp, |
| kAlwaysIfInClip_StencilFunc, |
| 0xffff, |
| 0xffff, |
| 0xffff); |
| |
| // ok not to check clip b/c stencil pass only wrote inside clip |
| GR_STATIC_CONST_SAME_STENCIL(gEOColorPass, |
| kZero_StencilOp, |
| kZero_StencilOp, |
| kNotEqual_StencilFunc, |
| 0xffff, |
| 0x0000, |
| 0xffff); |
| |
| // have to check clip b/c outside clip will always be zero. |
| GR_STATIC_CONST_SAME_STENCIL(gInvEOColorPass, |
| kZero_StencilOp, |
| kZero_StencilOp, |
| kEqualIfInClip_StencilFunc, |
| 0xffff, |
| 0x0000, |
| 0xffff); |
| |
| ////// Winding |
| |
| // when we have separate stencil we increment front faces / decrement back faces |
| // when we don't have wrap incr and decr we use the stencil test to simulate |
| // them. |
| |
| GR_STATIC_CONST_STENCIL(gWindStencilSeparateWithWrap, |
| kIncWrap_StencilOp, kDecWrap_StencilOp, |
| kKeep_StencilOp, kKeep_StencilOp, |
| kAlwaysIfInClip_StencilFunc, kAlwaysIfInClip_StencilFunc, |
| 0xffff, 0xffff, |
| 0xffff, 0xffff, |
| 0xffff, 0xffff); |
| |
| // if inc'ing the max value, invert to make 0 |
| // if dec'ing zero invert to make all ones. |
| // we can't avoid touching the stencil on both passing and |
| // failing, so we can't resctrict ourselves to the clip. |
| GR_STATIC_CONST_STENCIL(gWindStencilSeparateNoWrap, |
| kInvert_StencilOp, kInvert_StencilOp, |
| kIncClamp_StencilOp, kDecClamp_StencilOp, |
| kEqual_StencilFunc, kEqual_StencilFunc, |
| 0xffff, 0xffff, |
| 0xffff, 0x0000, |
| 0xffff, 0xffff); |
| |
| // When there are no separate faces we do two passes to setup the winding rule |
| // stencil. First we draw the front faces and inc, then we draw the back faces |
| // and dec. These are same as the above two split into the incrementing and |
| // decrementing passes. |
| GR_STATIC_CONST_SAME_STENCIL(gWindSingleStencilWithWrapInc, |
| kIncWrap_StencilOp, |
| kKeep_StencilOp, |
| kAlwaysIfInClip_StencilFunc, |
| 0xffff, |
| 0xffff, |
| 0xffff); |
| |
| GR_STATIC_CONST_SAME_STENCIL(gWindSingleStencilWithWrapDec, |
| kDecWrap_StencilOp, |
| kKeep_StencilOp, |
| kAlwaysIfInClip_StencilFunc, |
| 0xffff, |
| 0xffff, |
| 0xffff); |
| |
| GR_STATIC_CONST_SAME_STENCIL(gWindSingleStencilNoWrapInc, |
| kInvert_StencilOp, |
| kIncClamp_StencilOp, |
| kEqual_StencilFunc, |
| 0xffff, |
| 0xffff, |
| 0xffff); |
| |
| GR_STATIC_CONST_SAME_STENCIL(gWindSingleStencilNoWrapDec, |
| kInvert_StencilOp, |
| kDecClamp_StencilOp, |
| kEqual_StencilFunc, |
| 0xffff, |
| 0x0000, |
| 0xffff); |
| |
| // Color passes are the same whether we use the two-sided stencil or two passes |
| |
| GR_STATIC_CONST_SAME_STENCIL(gWindColorPass, |
| kZero_StencilOp, |
| kZero_StencilOp, |
| kNonZeroIfInClip_StencilFunc, |
| 0xffff, |
| 0x0000, |
| 0xffff); |
| |
| GR_STATIC_CONST_SAME_STENCIL(gInvWindColorPass, |
| kZero_StencilOp, |
| kZero_StencilOp, |
| kEqualIfInClip_StencilFunc, |
| 0xffff, |
| 0x0000, |
| 0xffff); |
| |
| ////// Normal render to stencil |
| |
| // Sometimes the default path renderer can draw a path directly to the stencil |
| // buffer without having to first resolve the interior / exterior. |
| GR_STATIC_CONST_SAME_STENCIL(gDirectToStencil, |
| kZero_StencilOp, |
| kIncClamp_StencilOp, |
| kAlwaysIfInClip_StencilFunc, |
| 0xffff, |
| 0x0000, |
| 0xffff); |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| // Helpers for drawPath |
| |
| #define STENCIL_OFF 0 // Always disable stencil (even when needed) |
| |
| static inline bool single_pass_path(const SkPath& path, const SkStrokeRec& stroke) { |
| #if STENCIL_OFF |
| return true; |
| #else |
| if (!stroke.isHairlineStyle() && !path.isInverseFillType()) { |
| return path.isConvex(); |
| } |
| return false; |
| #endif |
| } |
| |
| GrPathRenderer::StencilSupport |
| GrDefaultPathRenderer::onGetStencilSupport(const GrDrawTarget*, |
| const GrPipelineBuilder*, |
| const SkPath& path, |
| const GrStrokeInfo& stroke) const { |
| if (single_pass_path(path, stroke.getStrokeRec())) { |
| return GrPathRenderer::kNoRestriction_StencilSupport; |
| } else { |
| return GrPathRenderer::kStencilOnly_StencilSupport; |
| } |
| } |
| |
| static inline void append_countour_edge_indices(bool hairLine, |
| uint16_t fanCenterIdx, |
| uint16_t edgeV0Idx, |
| uint16_t** indices) { |
| // when drawing lines we're appending line segments along |
| // the contour. When applying the other fill rules we're |
| // drawing triangle fans around fanCenterIdx. |
| if (!hairLine) { |
| *((*indices)++) = fanCenterIdx; |
| } |
| *((*indices)++) = edgeV0Idx; |
| *((*indices)++) = edgeV0Idx + 1; |
| } |
| |
| static inline void add_quad(SkPoint** vert, const SkPoint* base, const SkPoint pts[], |
| SkScalar srcSpaceTolSqd, SkScalar srcSpaceTol, bool indexed, |
| bool isHairline, uint16_t subpathIdxStart, int offset, uint16_t** idx) { |
| // first pt of quad is the pt we ended on in previous step |
| uint16_t firstQPtIdx = (uint16_t)(*vert - base) - 1 + offset; |
| uint16_t numPts = (uint16_t) |
| GrPathUtils::generateQuadraticPoints( |
| pts[0], pts[1], pts[2], |
| srcSpaceTolSqd, vert, |
| GrPathUtils::quadraticPointCount(pts, srcSpaceTol)); |
| if (indexed) { |
| for (uint16_t i = 0; i < numPts; ++i) { |
| append_countour_edge_indices(isHairline, subpathIdxStart, |
| firstQPtIdx + i, idx); |
| } |
| } |
| } |
| |
| class DefaultPathBatch : public GrBatch { |
| public: |
| struct Geometry { |
| GrColor fColor; |
| SkPath fPath; |
| SkScalar fTolerance; |
| SkDEBUGCODE(SkRect fDevBounds;) |
| }; |
| |
| static GrBatch* Create(const Geometry& geometry, uint8_t coverage, const SkMatrix& viewMatrix, |
| bool isHairline) { |
| return SkNEW_ARGS(DefaultPathBatch, (geometry, coverage, viewMatrix, isHairline)); |
| } |
| |
| const char* name() const override { return "DefaultPathBatch"; } |
| |
| void getInvariantOutputColor(GrInitInvariantOutput* out) const override { |
| // When this is called on a batch, there is only one geometry bundle |
| out->setKnownFourComponents(fGeoData[0].fColor); |
| } |
| void getInvariantOutputCoverage(GrInitInvariantOutput* out) const override { |
| out->setKnownSingleComponent(this->coverage()); |
| } |
| |
| void initBatchTracker(const GrPipelineInfo& init) override { |
| // Handle any color overrides |
| if (init.fColorIgnored) { |
| fGeoData[0].fColor = GrColor_ILLEGAL; |
| } else if (GrColor_ILLEGAL != init.fOverrideColor) { |
| fGeoData[0].fColor = init.fOverrideColor; |
| } |
| |
| // setup batch properties |
| fBatch.fColorIgnored = init.fColorIgnored; |
| fBatch.fColor = fGeoData[0].fColor; |
| fBatch.fUsesLocalCoords = init.fUsesLocalCoords; |
| fBatch.fCoverageIgnored = init.fCoverageIgnored; |
| } |
| |
| void generateGeometry(GrBatchTarget* batchTarget, const GrPipeline* pipeline) override { |
| SkAutoTUnref<const GrGeometryProcessor> gp( |
| GrDefaultGeoProcFactory::Create(GrDefaultGeoProcFactory::kPosition_GPType, |
| this->color(), |
| this->viewMatrix(), |
| SkMatrix::I(), |
| false, |
| this->coverage())); |
| |
| size_t vertexStride = gp->getVertexStride(); |
| SkASSERT(vertexStride == sizeof(SkPoint)); |
| |
| batchTarget->initDraw(gp, pipeline); |
| |
| // TODO this is hacky, but the only way we have to initialize the GP is to use the |
| // GrPipelineInfo struct so we can generate the correct shader. Once we have GrBatch |
| // everywhere we can remove this nastiness |
| GrPipelineInfo init; |
| init.fColorIgnored = fBatch.fColorIgnored; |
| init.fOverrideColor = GrColor_ILLEGAL; |
| init.fCoverageIgnored = fBatch.fCoverageIgnored; |
| init.fUsesLocalCoords = this->usesLocalCoords(); |
| gp->initBatchTracker(batchTarget->currentBatchTracker(), init); |
| |
| int instanceCount = fGeoData.count(); |
| |
| // compute number of vertices |
| int maxVertices = 0; |
| |
| // We will use index buffers if we have multiple paths or one path with multiple contours |
| bool isIndexed = instanceCount > 1; |
| for (int i = 0; i < instanceCount; i++) { |
| Geometry& args = fGeoData[i]; |
| |
| int contourCount; |
| maxVertices += GrPathUtils::worstCasePointCount(args.fPath, &contourCount, |
| args.fTolerance); |
| |
| isIndexed = isIndexed || contourCount > 1; |
| } |
| |
| if (maxVertices == 0 || maxVertices > ((int)SK_MaxU16 + 1)) { |
| SkDebugf("Cannot render path (%d)\n", maxVertices); |
| return; |
| } |
| |
| // determine primitiveType |
| int maxIndices = 0; |
| GrPrimitiveType primitiveType; |
| if (this->isHairline()) { |
| if (isIndexed) { |
| maxIndices = 2 * maxVertices; |
| primitiveType = kLines_GrPrimitiveType; |
| } else { |
| primitiveType = kLineStrip_GrPrimitiveType; |
| } |
| } else { |
| if (isIndexed) { |
| maxIndices = 3 * maxVertices; |
| primitiveType = kTriangles_GrPrimitiveType; |
| } else { |
| primitiveType = kTriangleFan_GrPrimitiveType; |
| } |
| } |
| |
| // allocate vertex / index buffers |
| const GrVertexBuffer* vertexBuffer; |
| int firstVertex; |
| |
| void* vertices = batchTarget->vertexPool()->makeSpace(vertexStride, |
| maxVertices, |
| &vertexBuffer, |
| &firstVertex); |
| |
| if (!vertices) { |
| SkDebugf("Could not allocate vertices\n"); |
| return; |
| } |
| |
| const GrIndexBuffer* indexBuffer; |
| int firstIndex; |
| |
| void* indices = NULL; |
| if (isIndexed) { |
| indices = batchTarget->indexPool()->makeSpace(maxIndices, |
| &indexBuffer, |
| &firstIndex); |
| |
| if (!indices) { |
| SkDebugf("Could not allocate indices\n"); |
| return; |
| } |
| } |
| |
| // fill buffers |
| int vertexOffset = 0; |
| int indexOffset = 0; |
| for (int i = 0; i < instanceCount; i++) { |
| Geometry& args = fGeoData[i]; |
| |
| int vertexCnt = 0; |
| int indexCnt = 0; |
| if (!this->createGeom(vertices, |
| vertexOffset, |
| indices, |
| indexOffset, |
| &vertexCnt, |
| &indexCnt, |
| args.fPath, |
| args.fTolerance, |
| isIndexed)) { |
| return; |
| } |
| |
| vertexOffset += vertexCnt; |
| indexOffset += indexCnt; |
| SkASSERT(vertexOffset <= maxVertices && indexOffset <= maxIndices); |
| } |
| |
| GrDrawTarget::DrawInfo drawInfo; |
| drawInfo.setPrimitiveType(primitiveType); |
| drawInfo.setVertexBuffer(vertexBuffer); |
| drawInfo.setStartVertex(firstVertex); |
| drawInfo.setVertexCount(vertexOffset); |
| if (isIndexed) { |
| drawInfo.setIndexBuffer(indexBuffer); |
| drawInfo.setStartIndex(firstIndex); |
| drawInfo.setIndexCount(indexOffset); |
| } else { |
| drawInfo.setStartIndex(0); |
| drawInfo.setIndexCount(0); |
| } |
| batchTarget->draw(drawInfo); |
| |
| // put back reserves |
| batchTarget->putBackIndices((size_t)(maxIndices - indexOffset)); |
| batchTarget->putBackVertices((size_t)(maxVertices - vertexOffset), (size_t)vertexStride); |
| } |
| |
| SkSTArray<1, Geometry, true>* geoData() { return &fGeoData; } |
| |
| private: |
| DefaultPathBatch(const Geometry& geometry, uint8_t coverage, const SkMatrix& viewMatrix, |
| bool isHairline) { |
| this->initClassID<DefaultPathBatch>(); |
| fBatch.fCoverage = coverage; |
| fBatch.fIsHairline = isHairline; |
| fBatch.fViewMatrix = viewMatrix; |
| fGeoData.push_back(geometry); |
| } |
| |
| bool onCombineIfPossible(GrBatch* t) override { |
| DefaultPathBatch* that = t->cast<DefaultPathBatch>(); |
| |
| if (this->color() != that->color()) { |
| return false; |
| } |
| |
| if (this->coverage() != that->coverage()) { |
| return false; |
| } |
| |
| if (!this->viewMatrix().cheapEqualTo(that->viewMatrix())) { |
| return false; |
| } |
| |
| if (this->isHairline() != that->isHairline()) { |
| return false; |
| } |
| |
| fGeoData.push_back_n(that->geoData()->count(), that->geoData()->begin()); |
| return true; |
| } |
| |
| bool createGeom(void* vertices, |
| size_t vertexOffset, |
| void* indices, |
| size_t indexOffset, |
| int* vertexCnt, |
| int* indexCnt, |
| const SkPath& path, |
| SkScalar srcSpaceTol, |
| bool isIndexed) { |
| { |
| SkScalar srcSpaceTolSqd = SkScalarMul(srcSpaceTol, srcSpaceTol); |
| |
| uint16_t indexOffsetU16 = (uint16_t)indexOffset; |
| uint16_t vertexOffsetU16 = (uint16_t)vertexOffset; |
| |
| uint16_t* idxBase = reinterpret_cast<uint16_t*>(indices) + indexOffsetU16; |
| uint16_t* idx = idxBase; |
| uint16_t subpathIdxStart = vertexOffsetU16; |
| |
| SkPoint* base = reinterpret_cast<SkPoint*>(vertices) + vertexOffset; |
| SkPoint* vert = base; |
| |
| SkPoint pts[4]; |
| |
| bool first = true; |
| int subpath = 0; |
| |
| SkPath::Iter iter(path, false); |
| |
| bool done = false; |
| while (!done) { |
| SkPath::Verb verb = iter.next(pts); |
| switch (verb) { |
| case SkPath::kMove_Verb: |
| if (!first) { |
| uint16_t currIdx = (uint16_t) (vert - base) + vertexOffsetU16; |
| subpathIdxStart = currIdx; |
| ++subpath; |
| } |
| *vert = pts[0]; |
| vert++; |
| break; |
| case SkPath::kLine_Verb: |
| if (isIndexed) { |
| uint16_t prevIdx = (uint16_t)(vert - base) - 1 + vertexOffsetU16; |
| append_countour_edge_indices(this->isHairline(), subpathIdxStart, |
| prevIdx, &idx); |
| } |
| *(vert++) = pts[1]; |
| break; |
| case SkPath::kConic_Verb: { |
| SkScalar weight = iter.conicWeight(); |
| SkAutoConicToQuads converter; |
| // Converting in src-space, hance the finer tolerance (0.25) |
| // TODO: find a way to do this in dev-space so the tolerance means something |
| const SkPoint* quadPts = converter.computeQuads(pts, weight, 0.25f); |
| for (int i = 0; i < converter.countQuads(); ++i) { |
| add_quad(&vert, base, quadPts + i*2, srcSpaceTolSqd, srcSpaceTol, |
| isIndexed, this->isHairline(), subpathIdxStart, |
| (int)vertexOffset, &idx); |
| } |
| break; |
| } |
| case SkPath::kQuad_Verb: |
| add_quad(&vert, base, pts, srcSpaceTolSqd, srcSpaceTol, isIndexed, |
| this->isHairline(), subpathIdxStart, (int)vertexOffset, &idx); |
| break; |
| case SkPath::kCubic_Verb: { |
| // first pt of cubic is the pt we ended on in previous step |
| uint16_t firstCPtIdx = (uint16_t)(vert - base) - 1 + vertexOffsetU16; |
| uint16_t numPts = (uint16_t) GrPathUtils::generateCubicPoints( |
| pts[0], pts[1], pts[2], pts[3], |
| srcSpaceTolSqd, &vert, |
| GrPathUtils::cubicPointCount(pts, srcSpaceTol)); |
| if (isIndexed) { |
| for (uint16_t i = 0; i < numPts; ++i) { |
| append_countour_edge_indices(this->isHairline(), subpathIdxStart, |
| firstCPtIdx + i, &idx); |
| } |
| } |
| break; |
| } |
| case SkPath::kClose_Verb: |
| break; |
| case SkPath::kDone_Verb: |
| done = true; |
| } |
| first = false; |
| } |
| |
| *vertexCnt = static_cast<int>(vert - base); |
| *indexCnt = static_cast<int>(idx - idxBase); |
| |
| } |
| return true; |
| } |
| |
| GrColor color() const { return fBatch.fColor; } |
| uint8_t coverage() const { return fBatch.fCoverage; } |
| bool usesLocalCoords() const { return fBatch.fUsesLocalCoords; } |
| const SkMatrix& viewMatrix() const { return fBatch.fViewMatrix; } |
| bool isHairline() const { return fBatch.fIsHairline; } |
| |
| struct BatchTracker { |
| GrColor fColor; |
| uint8_t fCoverage; |
| SkMatrix fViewMatrix; |
| bool fUsesLocalCoords; |
| bool fColorIgnored; |
| bool fCoverageIgnored; |
| bool fIsHairline; |
| }; |
| |
| BatchTracker fBatch; |
| SkSTArray<1, Geometry, true> fGeoData; |
| }; |
| |
| bool GrDefaultPathRenderer::internalDrawPath(GrDrawTarget* target, |
| GrPipelineBuilder* pipelineBuilder, |
| GrColor color, |
| const SkMatrix& viewMatrix, |
| const SkPath& path, |
| const GrStrokeInfo& origStroke, |
| bool stencilOnly) { |
| SkTCopyOnFirstWrite<GrStrokeInfo> stroke(origStroke); |
| |
| SkScalar hairlineCoverage; |
| uint8_t newCoverage = 0xff; |
| if (IsStrokeHairlineOrEquivalent(*stroke, viewMatrix, &hairlineCoverage)) { |
| newCoverage = SkScalarRoundToInt(hairlineCoverage * 0xff); |
| |
| if (!stroke->getStrokeRec().isHairlineStyle()) { |
| stroke.writable()->getStrokeRecPtr()->setHairlineStyle(); |
| } |
| } |
| |
| const bool isHairline = stroke->getStrokeRec().isHairlineStyle(); |
| |
| // Save the current xp on the draw state so we can reset it if needed |
| SkAutoTUnref<const GrXPFactory> backupXPFactory(SkRef(pipelineBuilder->getXPFactory())); |
| // face culling doesn't make sense here |
| SkASSERT(GrPipelineBuilder::kBoth_DrawFace == pipelineBuilder->getDrawFace()); |
| |
| int passCount = 0; |
| const GrStencilSettings* passes[3]; |
| GrPipelineBuilder::DrawFace drawFace[3]; |
| bool reverse = false; |
| bool lastPassIsBounds; |
| |
| if (isHairline) { |
| passCount = 1; |
| if (stencilOnly) { |
| passes[0] = &gDirectToStencil; |
| } else { |
| passes[0] = NULL; |
| } |
| lastPassIsBounds = false; |
| drawFace[0] = GrPipelineBuilder::kBoth_DrawFace; |
| } else { |
| if (single_pass_path(path, stroke->getStrokeRec())) { |
| passCount = 1; |
| if (stencilOnly) { |
| passes[0] = &gDirectToStencil; |
| } else { |
| passes[0] = NULL; |
| } |
| drawFace[0] = GrPipelineBuilder::kBoth_DrawFace; |
| lastPassIsBounds = false; |
| } else { |
| switch (path.getFillType()) { |
| case SkPath::kInverseEvenOdd_FillType: |
| reverse = true; |
| // fallthrough |
| case SkPath::kEvenOdd_FillType: |
| passes[0] = &gEOStencilPass; |
| if (stencilOnly) { |
| passCount = 1; |
| lastPassIsBounds = false; |
| } else { |
| passCount = 2; |
| lastPassIsBounds = true; |
| if (reverse) { |
| passes[1] = &gInvEOColorPass; |
| } else { |
| passes[1] = &gEOColorPass; |
| } |
| } |
| drawFace[0] = drawFace[1] = GrPipelineBuilder::kBoth_DrawFace; |
| break; |
| |
| case SkPath::kInverseWinding_FillType: |
| reverse = true; |
| // fallthrough |
| case SkPath::kWinding_FillType: |
| if (fSeparateStencil) { |
| if (fStencilWrapOps) { |
| passes[0] = &gWindStencilSeparateWithWrap; |
| } else { |
| passes[0] = &gWindStencilSeparateNoWrap; |
| } |
| passCount = 2; |
| drawFace[0] = GrPipelineBuilder::kBoth_DrawFace; |
| } else { |
| if (fStencilWrapOps) { |
| passes[0] = &gWindSingleStencilWithWrapInc; |
| passes[1] = &gWindSingleStencilWithWrapDec; |
| } else { |
| passes[0] = &gWindSingleStencilNoWrapInc; |
| passes[1] = &gWindSingleStencilNoWrapDec; |
| } |
| // which is cw and which is ccw is arbitrary. |
| drawFace[0] = GrPipelineBuilder::kCW_DrawFace; |
| drawFace[1] = GrPipelineBuilder::kCCW_DrawFace; |
| passCount = 3; |
| } |
| if (stencilOnly) { |
| lastPassIsBounds = false; |
| --passCount; |
| } else { |
| lastPassIsBounds = true; |
| drawFace[passCount-1] = GrPipelineBuilder::kBoth_DrawFace; |
| if (reverse) { |
| passes[passCount-1] = &gInvWindColorPass; |
| } else { |
| passes[passCount-1] = &gWindColorPass; |
| } |
| } |
| break; |
| default: |
| SkDEBUGFAIL("Unknown path fFill!"); |
| return false; |
| } |
| } |
| } |
| |
| SkScalar tol = GrPathUtils::kDefaultTolerance; |
| SkScalar srcSpaceTol = GrPathUtils::scaleToleranceToSrc(tol, viewMatrix, path.getBounds()); |
| |
| SkRect devBounds; |
| GetPathDevBounds(path, pipelineBuilder->getRenderTarget(), viewMatrix, &devBounds); |
| |
| for (int p = 0; p < passCount; ++p) { |
| pipelineBuilder->setDrawFace(drawFace[p]); |
| if (passes[p]) { |
| *pipelineBuilder->stencil() = *passes[p]; |
| } |
| |
| if (lastPassIsBounds && (p == passCount-1)) { |
| // Reset the XP Factory on pipelineBuilder |
| pipelineBuilder->setXPFactory(backupXPFactory); |
| SkRect bounds; |
| SkMatrix localMatrix = SkMatrix::I(); |
| if (reverse) { |
| SkASSERT(pipelineBuilder->getRenderTarget()); |
| // draw over the dev bounds (which will be the whole dst surface for inv fill). |
| bounds = devBounds; |
| SkMatrix vmi; |
| // mapRect through persp matrix may not be correct |
| if (!viewMatrix.hasPerspective() && viewMatrix.invert(&vmi)) { |
| vmi.mapRect(&bounds); |
| } else { |
| if (!viewMatrix.invert(&localMatrix)) { |
| return false; |
| } |
| } |
| } else { |
| bounds = path.getBounds(); |
| } |
| GrDrawTarget::AutoGeometryPush agp(target); |
| const SkMatrix& viewM = (reverse && viewMatrix.hasPerspective()) ? SkMatrix::I() : |
| viewMatrix; |
| target->drawRect(pipelineBuilder, color, viewM, bounds, NULL, &localMatrix); |
| } else { |
| if (passCount > 1) { |
| pipelineBuilder->setDisableColorXPFactory(); |
| } |
| |
| DefaultPathBatch::Geometry geometry; |
| geometry.fColor = color; |
| geometry.fPath = path; |
| geometry.fTolerance = srcSpaceTol; |
| SkDEBUGCODE(geometry.fDevBounds = devBounds;) |
| |
| SkAutoTUnref<GrBatch> batch(DefaultPathBatch::Create(geometry, newCoverage, viewMatrix, |
| isHairline)); |
| |
| target->drawBatch(pipelineBuilder, batch, &devBounds); |
| } |
| } |
| return true; |
| } |
| |
| bool GrDefaultPathRenderer::canDrawPath(const GrDrawTarget* target, |
| const GrPipelineBuilder* pipelineBuilder, |
| const SkMatrix& viewMatrix, |
| const SkPath& path, |
| const GrStrokeInfo& stroke, |
| bool antiAlias) const { |
| // this class can draw any path with any fill but doesn't do any anti-aliasing. |
| return !antiAlias && (stroke.isFillStyle() || IsStrokeHairlineOrEquivalent(stroke, |
| viewMatrix, |
| NULL)); |
| } |
| |
| bool GrDefaultPathRenderer::onDrawPath(GrDrawTarget* target, |
| GrPipelineBuilder* pipelineBuilder, |
| GrColor color, |
| const SkMatrix& viewMatrix, |
| const SkPath& path, |
| const GrStrokeInfo& stroke, |
| bool antiAlias) { |
| return this->internalDrawPath(target, |
| pipelineBuilder, |
| color, |
| viewMatrix, |
| path, |
| stroke, |
| false); |
| } |
| |
| void GrDefaultPathRenderer::onStencilPath(GrDrawTarget* target, |
| GrPipelineBuilder* pipelineBuilder, |
| const SkMatrix& viewMatrix, |
| const SkPath& path, |
| const GrStrokeInfo& stroke) { |
| SkASSERT(SkPath::kInverseEvenOdd_FillType != path.getFillType()); |
| SkASSERT(SkPath::kInverseWinding_FillType != path.getFillType()); |
| this->internalDrawPath(target, pipelineBuilder, GrColor_WHITE, viewMatrix, path, stroke, true); |
| } |