src/gpu/ops/GrFillRectOp.cpp - platform/external/skia - Gitiles

 /*
  * Copyright 2018 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */

 #include "src/gpu/ops/GrFillRectOp.h"

 #include "include/core/SkMatrix.h"
 #include "include/core/SkRect.h"
 #include "src/gpu/GrCaps.h"
 #include "src/gpu/GrGeometryProcessor.h"
 #include "src/gpu/GrPaint.h"
 #include "src/gpu/SkGr.h"
 #include "src/gpu/geometry/GrQuad.h"
 #include "src/gpu/geometry/GrQuadBuffer.h"
 #include "src/gpu/geometry/GrQuadUtils.h"
 #include "src/gpu/glsl/GrGLSLColorSpaceXformHelper.h"
 #include "src/gpu/glsl/GrGLSLGeometryProcessor.h"
 #include "src/gpu/glsl/GrGLSLVarying.h"
 #include "src/gpu/ops/GrMeshDrawOp.h"
 #include "src/gpu/ops/GrQuadPerEdgeAA.h"
 #include "src/gpu/ops/GrSimpleMeshDrawOpHelper.h"

 namespace {

 using VertexSpec = GrQuadPerEdgeAA::VertexSpec;
 using ColorType = GrQuadPerEdgeAA::ColorType;

 #ifdef SK_DEBUG
 static SkString dump_quad_info(int index, const GrQuad& deviceQuad,
                                const GrQuad& localQuad, const SkPMColor4f& color,
                                GrQuadAAFlags aaFlags) {
     SkString str;
     str.appendf("%d: Color: [%.2f, %.2f, %.2f, %.2f], Edge AA: l%u_t%u_r%u_b%u, \n"
                 "  device quad: [(%.2f, %2.f, %.2f), (%.2f, %.2f, %.2f), (%.2f, %.2f, %.2f), "
                 "(%.2f, %.2f, %.2f)],\n"
                 "  local quad: [(%.2f, %2.f, %.2f), (%.2f, %.2f, %.2f), (%.2f, %.2f, %.2f), "
                 "(%.2f, %.2f, %.2f)]\n",
                 index, color.fR, color.fG, color.fB, color.fA,
                 (uint32_t) (aaFlags & GrQuadAAFlags::kLeft),
                 (uint32_t) (aaFlags & GrQuadAAFlags::kTop),
                 (uint32_t) (aaFlags & GrQuadAAFlags::kRight),
                 (uint32_t) (aaFlags & GrQuadAAFlags::kBottom),
                 deviceQuad.x(0), deviceQuad.y(0), deviceQuad.w(0),
                 deviceQuad.x(1), deviceQuad.y(1), deviceQuad.w(1),
                 deviceQuad.x(2), deviceQuad.y(2), deviceQuad.w(2),
                 deviceQuad.x(3), deviceQuad.y(3), deviceQuad.w(3),
                 localQuad.x(0), localQuad.y(0), localQuad.w(0),
                 localQuad.x(1), localQuad.y(1), localQuad.w(1),
                 localQuad.x(2), localQuad.y(2), localQuad.w(2),
                 localQuad.x(3), localQuad.y(3), localQuad.w(3));
     return str;
 }
 #endif

 class FillRectOp final : public GrMeshDrawOp {
 private:
     using Helper = GrSimpleMeshDrawOpHelperWithStencil;

 public:
     static std::unique_ptr<GrDrawOp> Make(GrRecordingContext* context,
                                           GrPaint&& paint,
                                           GrAAType aaType,
                                           GrQuadAAFlags edgeAA,
                                           const GrUserStencilSettings* stencilSettings,
                                           const GrQuad& deviceQuad,
                                           const GrQuad& localQuad) {
         // Clean up deviations between aaType and edgeAA
         GrQuadUtils::ResolveAAType(aaType, edgeAA, deviceQuad, &aaType, &edgeAA);
         return Helper::FactoryHelper<FillRectOp>(context, std::move(paint), aaType, edgeAA,
                 stencilSettings, deviceQuad, localQuad);
     }

     // aaType is passed to Helper in the initializer list, so incongruities between aaType and
     // edgeFlags must be resolved prior to calling this constructor.
     FillRectOp(Helper::MakeArgs args, SkPMColor4f paintColor, GrAAType aaType,
                GrQuadAAFlags edgeFlags, const GrUserStencilSettings* stencil,
                const GrQuad& deviceQuad, const GrQuad& localQuad)
             : INHERITED(ClassID())
             , fHelper(args, aaType, stencil)
             , fQuads(1, !fHelper.isTrivial()) {
         // Conservatively keep track of the local coordinates; it may be that the paint doesn't
         // need them after analysis is finished. If the paint is known to be solid up front they
         // can be skipped entirely.
         fQuads.append(deviceQuad, { paintColor, edgeFlags },
                       fHelper.isTrivial() ? nullptr : &localQuad);
         this->setBounds(deviceQuad.bounds(), HasAABloat(aaType == GrAAType::kCoverage),
                         IsHairline::kNo);
     }

     const char* name() const override { return "FillRectOp"; }

     void visitProxies(const VisitProxyFunc& func) const override {
         return fHelper.visitProxies(func);
     }

 #ifdef SK_DEBUG
     SkString dumpInfo() const override {
         SkString str;
         str.appendf("# draws: %u\n", fQuads.count());
         str.appendf("Device quad type: %u, local quad type: %u\n",
                     (uint32_t) fQuads.deviceQuadType(), (uint32_t) fQuads.localQuadType());
         str += fHelper.dumpInfo();
         int i = 0;
         auto iter = fQuads.iterator();
         while(iter.next()) {
             const ColorAndAA& info = iter.metadata();
             str += dump_quad_info(i, iter.deviceQuad(), iter.localQuad(),
                                   info.fColor, info.fAAFlags);
             i++;
         }
         str += INHERITED::dumpInfo();
         return str;
     }
 #endif

     GrProcessorSet::Analysis finalize(
             const GrCaps& caps, const GrAppliedClip* clip, bool hasMixedSampledCoverage,
             GrClampType clampType) override {
         // Initialize aggregate color analysis with the first quad's color (which always exists)
         auto iter = fQuads.metadata();
         SkAssertResult(iter.next());
         GrProcessorAnalysisColor quadColors(iter->fColor);
         // Then combine the colors of any additional quads (e.g. from MakeSet)
         while(iter.next()) {
             quadColors = GrProcessorAnalysisColor::Combine(quadColors, iter->fColor);
             if (quadColors.isUnknown()) {
                 // No point in accumulating additional starting colors, combining cannot make it
                 // less unknown.
                 break;
             }
         }

         // If the AA type is coverage, it will be a single value per pixel; if it's not coverage AA
         // then the coverage is always 1.0, so specify kNone for more optimal blending.
         GrProcessorAnalysisCoverage coverage = fHelper.aaType() == GrAAType::kCoverage ?
                 GrProcessorAnalysisCoverage::kSingleChannel :
                 GrProcessorAnalysisCoverage::kNone;
         auto result = fHelper.finalizeProcessors(
                 caps, clip, hasMixedSampledCoverage, clampType, coverage, &quadColors);
         // If there is a constant color after analysis, that means all of the quads should be set
         // to the same color (even if they started out with different colors).
         iter = fQuads.metadata();
         SkPMColor4f colorOverride;
         if (quadColors.isConstant(&colorOverride)) {
             fColorType = GrQuadPerEdgeAA::MinColorType(colorOverride, clampType, caps);
             while(iter.next()) {
                 iter->fColor = colorOverride;
             }
         } else {
             // Otherwise compute the color type needed as the max over all quads.
             fColorType = ColorType::kNone;
             while(iter.next()) {
                 fColorType = SkTMax(fColorType,
                                     GrQuadPerEdgeAA::MinColorType(iter->fColor, clampType, caps));
             }
         }
         // Most SkShaders' FPs multiply their calculated color by the paint color or alpha. We want
         // to use ColorType::kNone to optimize out that multiply. However, if there are no color
         // FPs then were really writing a special shader for white rectangles and not saving any
         // multiples. So in that case use bytes to avoid the extra shader (and possibly work around
         // an ANGLE issue: crbug.com/942565).
         if (fColorType == ColorType::kNone && !result.hasColorFragmentProcessor()) {
             fColorType = ColorType::kByte;
         }

         return result;
     }

     FixedFunctionFlags fixedFunctionFlags() const override {
         // Since the AA type of the whole primitive is kept consistent with the per edge AA flags
         // the helper's fixed function flags are appropriate.
         return fHelper.fixedFunctionFlags();
     }

     DEFINE_OP_CLASS_ID

 private:
     friend class ::GrFillRectOp; // for access to addQuad

 #if GR_TEST_UTILS
     int numQuads() const final { return fQuads.count(); }
 #endif

     void onPrepareDraws(Target* target) override {
         TRACE_EVENT0("skia.gpu", TRACE_FUNC);

         using Domain = GrQuadPerEdgeAA::Domain;
         static constexpr SkRect kEmptyDomain = SkRect::MakeEmpty();

         auto indexBufferOption = GrQuadPerEdgeAA::CalcIndexBufferOption(fHelper.aaType(),
                                                                         fQuads.count());

         VertexSpec vertexSpec(fQuads.deviceQuadType(), fColorType, fQuads.localQuadType(),
                               fHelper.usesLocalCoords(), Domain::kNo, fHelper.aaType(),
                               fHelper.compatibleWithCoverageAsAlpha(), indexBufferOption);
         // Make sure that if the op thought it was a solid color, the vertex spec does not use
         // local coords.
         SkASSERT(!fHelper.isTrivial() || !fHelper.usesLocalCoords());

         GrGeometryProcessor* gp = GrQuadPerEdgeAA::MakeProcessor(target->allocator(), vertexSpec);
         size_t vertexSize = gp->vertexStride();

         sk_sp<const GrBuffer> vertexBuffer;
         int vertexOffsetInBuffer = 0;

         const int totalNumVertices = fQuads.count() * vertexSpec.verticesPerQuad();

         // Fill the allocated vertex data
         void* vdata = target->makeVertexSpace(vertexSize, totalNumVertices,
                                               &vertexBuffer, &vertexOffsetInBuffer);
         if (!vdata) {
             SkDebugf("Could not allocate vertices\n");
             return;
         }

         GrQuadPerEdgeAA::Tessellator tessellator(vertexSpec, (char*) vdata);
         auto iter = fQuads.iterator();
         while(iter.next()) {
             // All entries should have local coords, or no entries should have local coords,
             // matching !helper.isTrivial() (which is more conservative than helper.usesLocalCoords)
             SkASSERT(iter.isLocalValid() != fHelper.isTrivial());
             auto info = iter.metadata();
             tessellator.append(iter.deviceQuad(), iter.localQuad(),
                                info.fColor, kEmptyDomain, info.fAAFlags);
         }

         sk_sp<const GrBuffer> indexBuffer;
         if (vertexSpec.needsIndexBuffer()) {
             indexBuffer = GrQuadPerEdgeAA::GetIndexBuffer(target, vertexSpec.indexBufferOption());
             if (!indexBuffer) {
                 SkDebugf("Could not allocate indices\n");
                 return;
             }
         }

         // Configure the mesh for the vertex data
         GrMesh* mesh = target->allocMeshes(1);
         GrQuadPerEdgeAA::ConfigureMesh(target->caps(), mesh, vertexSpec, 0, fQuads.count(),
                                        totalNumVertices, std::move(vertexBuffer),
                                        std::move(indexBuffer), vertexOffsetInBuffer);
         target->recordDraw(gp, mesh, 1, vertexSpec.primitiveType());
     }

     void onExecute(GrOpFlushState* flushState, const SkRect& chainBounds) override {
         fHelper.executeDrawsAndUploads(this, flushState, chainBounds);
     }

     CombineResult onCombineIfPossible(GrOp* t, const GrCaps& caps) override {
         TRACE_EVENT0("skia.gpu", TRACE_FUNC);
         const auto* that = t->cast<FillRectOp>();

         bool upgradeToCoverageAAOnMerge = false;
         if (fHelper.aaType() != that->fHelper.aaType()) {
             if (!CanUpgradeAAOnMerge(fHelper.aaType(), that->fHelper.aaType())) {
                 return CombineResult::kCannotCombine;
             }
             upgradeToCoverageAAOnMerge = true;
         }

         if (CombinedQuadCountWillOverflow(fHelper.aaType(), upgradeToCoverageAAOnMerge,
                                           fQuads.count() + that->fQuads.count())) {
             return CombineResult::kCannotCombine;
         }

         // Unlike most users of the draw op helper, this op can merge none-aa and coverage-aa draw
         // ops together, so pass true as the last argument.
         if (!fHelper.isCompatible(that->fHelper, caps, this->bounds(), that->bounds(), true)) {
             return CombineResult::kCannotCombine;
         }

         // If the paints were compatible, the trivial/solid-color state should be the same
         SkASSERT(fHelper.isTrivial() == that->fHelper.isTrivial());

         // If the processor sets are compatible, the two ops are always compatible; it just needs to
         // adjust the state of the op to be the more general quad and aa types of the two ops and
         // then concatenate the per-quad data.
         fColorType = SkTMax(fColorType, that->fColorType);

         // The helper stores the aa type, but isCompatible(with true arg) allows the two ops' aa
         // types to be none and coverage, in which case this op's aa type must be lifted to coverage
         // so that quads with no aa edges can be batched with quads that have some/all edges aa'ed.
         if (upgradeToCoverageAAOnMerge) {
             fHelper.setAAType(GrAAType::kCoverage);
         }

         fQuads.concat(that->fQuads);
         return CombineResult::kMerged;
     }

     // Similar to onCombineIfPossible, but adds a quad assuming its op would have been compatible.
     // But since it's avoiding the op list management, it must update the op's bounds. This is only
     // used with quad sets, which uses the same view matrix for each quad so this assumes that the
     // device quad type of the new quad is the same as the op's.
     bool addQuad(const GrQuad& deviceQuad, const GrQuad& localQuad,
                  const SkPMColor4f& color, GrQuadAAFlags edgeAA, GrAAType aaType) {
         // The new quad's aa type should be the same as the first quad's or none, except when the
         // first quad's aa type was already downgraded to none, in which case the stored type must
         // be lifted to back to the requested type.
         if (aaType != fHelper.aaType() && aaType != GrAAType::kNone) {
             auto indexBufferOption = GrQuadPerEdgeAA::CalcIndexBufferOption(aaType,
                                                                             fQuads.count()+1);
             if (fQuads.count()+1 > GrQuadPerEdgeAA::QuadLimit(indexBufferOption)) {
                 // Promoting to the new aaType would've caused an overflow of the indexBuffer
                 // limit
                 return false;
             }

             // Original quad was downgraded to non-aa, lift back up to this quad's required type
             SkASSERT(fHelper.aaType() == GrAAType::kNone);
             fHelper.setAAType(aaType);
         } else {
             auto indexBufferOption = GrQuadPerEdgeAA::CalcIndexBufferOption(fHelper.aaType(),
                                                                             fQuads.count()+1);
             if (fQuads.count()+1 > GrQuadPerEdgeAA::QuadLimit(indexBufferOption)) {
                 return false; // This op can't grow any more
             }
         }

         // Update the bounds and add the quad to this op's storage
         SkRect newBounds = this->bounds();
         newBounds.joinPossiblyEmptyRect(deviceQuad.bounds());
         this->setBounds(newBounds, HasAABloat(fHelper.aaType() == GrAAType::kCoverage),
                         IsHairline::kNo);
         fQuads.append(deviceQuad, { color, edgeAA }, fHelper.isTrivial() ? nullptr : &localQuad);
         return true;
     }

     struct ColorAndAA {
         SkPMColor4f fColor;
         GrQuadAAFlags fAAFlags;
     };

     Helper fHelper;
     GrQuadBuffer<ColorAndAA> fQuads;

     ColorType fColorType;

     typedef GrMeshDrawOp INHERITED;
 };

 } // anonymous namespace

 std::unique_ptr<GrDrawOp> GrFillRectOp::Make(GrRecordingContext* context,
                                              GrPaint&& paint,
                                              GrAAType aaType,
                                              GrQuadAAFlags aaFlags,
                                              const GrQuad& deviceQuad,
                                              const GrQuad& localQuad,
                                              const GrUserStencilSettings* stencil) {
     return FillRectOp::Make(context, std::move(paint), aaType, aaFlags, stencil,
                             deviceQuad, localQuad);
 }

 std::unique_ptr<GrDrawOp> GrFillRectOp::MakeNonAARect(GrRecordingContext* context,
                                                       GrPaint&& paint,
                                                       const SkMatrix& view,
                                                       const SkRect& rect,
                                                       const GrUserStencilSettings* stencil) {
     return FillRectOp::Make(context, std::move(paint), GrAAType::kNone, GrQuadAAFlags::kNone,
                             stencil, GrQuad::MakeFromRect(rect, view), GrQuad(rect));
 }

 std::unique_ptr<GrDrawOp> GrFillRectOp::MakeOp(GrRecordingContext* context,
                                                GrPaint&& paint,
                                                GrAAType aaType,
                                                const SkMatrix& viewMatrix,
                                                const GrRenderTargetContext::QuadSetEntry quads[],
                                                int cnt,
                                                const GrUserStencilSettings* stencilSettings,
                                                int* numConsumed) {
     // First make a draw op for the first quad in the set
     SkASSERT(cnt > 0);

     paint.setColor4f(quads[0].fColor);
     std::unique_ptr<GrDrawOp> op = FillRectOp::Make(
             context, std::move(paint), aaType,
             quads[0].fAAFlags, stencilSettings,
             GrQuad::MakeFromRect(quads[0].fRect, viewMatrix),
             GrQuad::MakeFromRect(quads[0].fRect, quads[0].fLocalMatrix));
     FillRectOp* fillRects = op->cast<FillRectOp>();

     *numConsumed = 1;
     // Accumulate remaining quads similar to onCombineIfPossible() without creating an op
     for (int i = 1; i < cnt; ++i) {
         GrQuad deviceQuad = GrQuad::MakeFromRect(quads[i].fRect, viewMatrix);

         GrAAType resolvedAA;
         GrQuadAAFlags resolvedEdgeFlags;
         GrQuadUtils::ResolveAAType(aaType, quads[i].fAAFlags, deviceQuad,
                                    &resolvedAA, &resolvedEdgeFlags);

         if (!fillRects->addQuad(deviceQuad,
                                 GrQuad::MakeFromRect(quads[i].fRect, quads[i].fLocalMatrix),
                                 quads[i].fColor, resolvedEdgeFlags, resolvedAA)) {
             break;
         }

         (*numConsumed)++;
     }

     return op;
 }

 void GrFillRectOp::AddFillRectOps(GrRenderTargetContext* rtc,
                                   const GrClip& clip,
                                   GrRecordingContext* context,
                                   GrPaint&& paint,
                                   GrAAType aaType,
                                   const SkMatrix& viewMatrix,
                                   const GrRenderTargetContext::QuadSetEntry quads[],
                                   int cnt,
                                   const GrUserStencilSettings* stencilSettings) {

     int offset = 0;
     int numLeft = cnt;
     while (numLeft) {
         int numConsumed = 0;

         std::unique_ptr<GrDrawOp> op = MakeOp(context, GrPaint::Clone(paint), aaType, viewMatrix,
                                               &quads[offset], numLeft, stencilSettings,
                                               &numConsumed);

         offset += numConsumed;
         numLeft -= numConsumed;

         rtc->addDrawOp(clip, std::move(op));
     }

     SkASSERT(offset == cnt);
 }

 #if GR_TEST_UTILS

 uint32_t GrFillRectOp::ClassID() {
     return FillRectOp::ClassID();
 }

 #include "src/gpu/GrDrawOpTest.h"
 #include "src/gpu/SkGr.h"

 GR_DRAW_OP_TEST_DEFINE(FillRectOp) {
     SkMatrix viewMatrix = GrTest::TestMatrixInvertible(random);
     SkRect rect = GrTest::TestRect(random);

     GrAAType aaType = GrAAType::kNone;
     if (random->nextBool()) {
         aaType = (numSamples > 1) ? GrAAType::kMSAA : GrAAType::kCoverage;
     }
     const GrUserStencilSettings* stencil = random->nextBool() ? nullptr
                                                               : GrGetRandomStencil(random, context);

     GrQuadAAFlags aaFlags = GrQuadAAFlags::kNone;
     aaFlags |= random->nextBool() ? GrQuadAAFlags::kLeft : GrQuadAAFlags::kNone;
     aaFlags |= random->nextBool() ? GrQuadAAFlags::kTop : GrQuadAAFlags::kNone;
     aaFlags |= random->nextBool() ? GrQuadAAFlags::kRight : GrQuadAAFlags::kNone;
     aaFlags |= random->nextBool() ? GrQuadAAFlags::kBottom : GrQuadAAFlags::kNone;

     if (random->nextBool()) {
         if (random->nextBool()) {
             // Single local matrix
             SkMatrix localMatrix = GrTest::TestMatrixInvertible(random);
             return GrFillRectOp::Make(context, std::move(paint), aaType, aaFlags,
                                       GrQuad::MakeFromRect(rect, viewMatrix),
                                       GrQuad::MakeFromRect(rect, localMatrix), stencil);
         } else {
             // Pass local rect directly
             SkRect localRect = GrTest::TestRect(random);
             return GrFillRectOp::Make(context, std::move(paint), aaType, aaFlags,
                                       GrQuad::MakeFromRect(rect, viewMatrix),
                                       GrQuad(localRect), stencil);
         }
     } else {
         // The simplest constructor
         return GrFillRectOp::Make(context, std::move(paint), aaType, aaFlags,
                                   GrQuad::MakeFromRect(rect, viewMatrix),
                                   GrQuad(rect), stencil);
     }
 }

 #endif
	/*
	* Copyright 2018 Google Inc.
	*
	* Use of this source code is governed by a BSD-style license that can be
	* found in the LICENSE file.
	*/

	#include "src/gpu/ops/GrFillRectOp.h"

	#include "include/core/SkMatrix.h"
	#include "include/core/SkRect.h"
	#include "src/gpu/GrCaps.h"
	#include "src/gpu/GrGeometryProcessor.h"
	#include "src/gpu/GrPaint.h"
	#include "src/gpu/SkGr.h"
	#include "src/gpu/geometry/GrQuad.h"
	#include "src/gpu/geometry/GrQuadBuffer.h"
	#include "src/gpu/geometry/GrQuadUtils.h"
	#include "src/gpu/glsl/GrGLSLColorSpaceXformHelper.h"
	#include "src/gpu/glsl/GrGLSLGeometryProcessor.h"
	#include "src/gpu/glsl/GrGLSLVarying.h"
	#include "src/gpu/ops/GrMeshDrawOp.h"
	#include "src/gpu/ops/GrQuadPerEdgeAA.h"
	#include "src/gpu/ops/GrSimpleMeshDrawOpHelper.h"

	namespace {

	using VertexSpec = GrQuadPerEdgeAA::VertexSpec;
	using ColorType = GrQuadPerEdgeAA::ColorType;

	#ifdef SK_DEBUG
	static SkString dump_quad_info(int index, const GrQuad& deviceQuad,
	const GrQuad& localQuad, const SkPMColor4f& color,
	GrQuadAAFlags aaFlags) {
	SkString str;
	str.appendf("%d: Color: [%.2f, %.2f, %.2f, %.2f], Edge AA: l%u_t%u_r%u_b%u, \n"
	" device quad: [(%.2f, %2.f, %.2f), (%.2f, %.2f, %.2f), (%.2f, %.2f, %.2f), "
	"(%.2f, %.2f, %.2f)],\n"
	" local quad: [(%.2f, %2.f, %.2f), (%.2f, %.2f, %.2f), (%.2f, %.2f, %.2f), "
	"(%.2f, %.2f, %.2f)]\n",
	index, color.fR, color.fG, color.fB, color.fA,
	(uint32_t) (aaFlags & GrQuadAAFlags::kLeft),
	(uint32_t) (aaFlags & GrQuadAAFlags::kTop),
	(uint32_t) (aaFlags & GrQuadAAFlags::kRight),
	(uint32_t) (aaFlags & GrQuadAAFlags::kBottom),
	deviceQuad.x(0), deviceQuad.y(0), deviceQuad.w(0),
	deviceQuad.x(1), deviceQuad.y(1), deviceQuad.w(1),
	deviceQuad.x(2), deviceQuad.y(2), deviceQuad.w(2),
	deviceQuad.x(3), deviceQuad.y(3), deviceQuad.w(3),
	localQuad.x(0), localQuad.y(0), localQuad.w(0),
	localQuad.x(1), localQuad.y(1), localQuad.w(1),
	localQuad.x(2), localQuad.y(2), localQuad.w(2),
	localQuad.x(3), localQuad.y(3), localQuad.w(3));
	return str;
	}
	#endif

	class FillRectOp final : public GrMeshDrawOp {
	private:
	using Helper = GrSimpleMeshDrawOpHelperWithStencil;

	public:
	static std::unique_ptr<GrDrawOp> Make(GrRecordingContext* context,
	GrPaint&& paint,
	GrAAType aaType,
	GrQuadAAFlags edgeAA,
	const GrUserStencilSettings* stencilSettings,
	const GrQuad& deviceQuad,
	const GrQuad& localQuad) {
	// Clean up deviations between aaType and edgeAA
	GrQuadUtils::ResolveAAType(aaType, edgeAA, deviceQuad, &aaType, &edgeAA);
	return Helper::FactoryHelper<FillRectOp>(context, std::move(paint), aaType, edgeAA,
	stencilSettings, deviceQuad, localQuad);
	}

	// aaType is passed to Helper in the initializer list, so incongruities between aaType and
	// edgeFlags must be resolved prior to calling this constructor.
	FillRectOp(Helper::MakeArgs args, SkPMColor4f paintColor, GrAAType aaType,
	GrQuadAAFlags edgeFlags, const GrUserStencilSettings* stencil,
	const GrQuad& deviceQuad, const GrQuad& localQuad)
	: INHERITED(ClassID())
	, fHelper(args, aaType, stencil)
	, fQuads(1, !fHelper.isTrivial()) {
	// Conservatively keep track of the local coordinates; it may be that the paint doesn't
	// need them after analysis is finished. If the paint is known to be solid up front they
	// can be skipped entirely.
	fQuads.append(deviceQuad, { paintColor, edgeFlags },
	fHelper.isTrivial() ? nullptr : &localQuad);
	this->setBounds(deviceQuad.bounds(), HasAABloat(aaType == GrAAType::kCoverage),
	IsHairline::kNo);
	}

	const char* name() const override { return "FillRectOp"; }

	void visitProxies(const VisitProxyFunc& func) const override {
	return fHelper.visitProxies(func);
	}

	#ifdef SK_DEBUG
	SkString dumpInfo() const override {
	SkString str;
	str.appendf("# draws: %u\n", fQuads.count());
	str.appendf("Device quad type: %u, local quad type: %u\n",
	(uint32_t) fQuads.deviceQuadType(), (uint32_t) fQuads.localQuadType());
	str += fHelper.dumpInfo();
	int i = 0;
	auto iter = fQuads.iterator();
	while(iter.next()) {
	const ColorAndAA& info = iter.metadata();
	str += dump_quad_info(i, iter.deviceQuad(), iter.localQuad(),
	info.fColor, info.fAAFlags);
	i++;
	}
	str += INHERITED::dumpInfo();
	return str;
	}
	#endif

	GrProcessorSet::Analysis finalize(
	const GrCaps& caps, const GrAppliedClip* clip, bool hasMixedSampledCoverage,
	GrClampType clampType) override {
	// Initialize aggregate color analysis with the first quad's color (which always exists)
	auto iter = fQuads.metadata();
	SkAssertResult(iter.next());
	GrProcessorAnalysisColor quadColors(iter->fColor);
	// Then combine the colors of any additional quads (e.g. from MakeSet)
	while(iter.next()) {
	quadColors = GrProcessorAnalysisColor::Combine(quadColors, iter->fColor);
	if (quadColors.isUnknown()) {
	// No point in accumulating additional starting colors, combining cannot make it
	// less unknown.
	break;
	}
	}

	// If the AA type is coverage, it will be a single value per pixel; if it's not coverage AA
	// then the coverage is always 1.0, so specify kNone for more optimal blending.
	GrProcessorAnalysisCoverage coverage = fHelper.aaType() == GrAAType::kCoverage ?
	GrProcessorAnalysisCoverage::kSingleChannel :
	GrProcessorAnalysisCoverage::kNone;
	auto result = fHelper.finalizeProcessors(
	caps, clip, hasMixedSampledCoverage, clampType, coverage, &quadColors);
	// If there is a constant color after analysis, that means all of the quads should be set
	// to the same color (even if they started out with different colors).
	iter = fQuads.metadata();
	SkPMColor4f colorOverride;
	if (quadColors.isConstant(&colorOverride)) {
	fColorType = GrQuadPerEdgeAA::MinColorType(colorOverride, clampType, caps);
	while(iter.next()) {
	iter->fColor = colorOverride;
	}
	} else {
	// Otherwise compute the color type needed as the max over all quads.
	fColorType = ColorType::kNone;
	while(iter.next()) {
	fColorType = SkTMax(fColorType,
	GrQuadPerEdgeAA::MinColorType(iter->fColor, clampType, caps));
	}
	}
	// Most SkShaders' FPs multiply their calculated color by the paint color or alpha. We want
	// to use ColorType::kNone to optimize out that multiply. However, if there are no color
	// FPs then were really writing a special shader for white rectangles and not saving any
	// multiples. So in that case use bytes to avoid the extra shader (and possibly work around
	// an ANGLE issue: crbug.com/942565).
	if (fColorType == ColorType::kNone && !result.hasColorFragmentProcessor()) {
	fColorType = ColorType::kByte;
	}

	return result;
	}

	FixedFunctionFlags fixedFunctionFlags() const override {
	// Since the AA type of the whole primitive is kept consistent with the per edge AA flags
	// the helper's fixed function flags are appropriate.
	return fHelper.fixedFunctionFlags();
	}

	DEFINE_OP_CLASS_ID

	private:
	friend class ::GrFillRectOp; // for access to addQuad

	#if GR_TEST_UTILS
	int numQuads() const final { return fQuads.count(); }
	#endif

	void onPrepareDraws(Target* target) override {
	TRACE_EVENT0("skia.gpu", TRACE_FUNC);

	using Domain = GrQuadPerEdgeAA::Domain;
	static constexpr SkRect kEmptyDomain = SkRect::MakeEmpty();

	auto indexBufferOption = GrQuadPerEdgeAA::CalcIndexBufferOption(fHelper.aaType(),
	fQuads.count());

	VertexSpec vertexSpec(fQuads.deviceQuadType(), fColorType, fQuads.localQuadType(),
	fHelper.usesLocalCoords(), Domain::kNo, fHelper.aaType(),
	fHelper.compatibleWithCoverageAsAlpha(), indexBufferOption);
	// Make sure that if the op thought it was a solid color, the vertex spec does not use
	// local coords.
	SkASSERT(!fHelper.isTrivial() \|\| !fHelper.usesLocalCoords());

	GrGeometryProcessor* gp = GrQuadPerEdgeAA::MakeProcessor(target->allocator(), vertexSpec);
	size_t vertexSize = gp->vertexStride();

	sk_sp<const GrBuffer> vertexBuffer;
	int vertexOffsetInBuffer = 0;

	const int totalNumVertices = fQuads.count() * vertexSpec.verticesPerQuad();

	// Fill the allocated vertex data
	void* vdata = target->makeVertexSpace(vertexSize, totalNumVertices,
	&vertexBuffer, &vertexOffsetInBuffer);
	if (!vdata) {
	SkDebugf("Could not allocate vertices\n");
	return;
	}

	GrQuadPerEdgeAA::Tessellator tessellator(vertexSpec, (char*) vdata);
	auto iter = fQuads.iterator();
	while(iter.next()) {
	// All entries should have local coords, or no entries should have local coords,
	// matching !helper.isTrivial() (which is more conservative than helper.usesLocalCoords)
	SkASSERT(iter.isLocalValid() != fHelper.isTrivial());
	auto info = iter.metadata();
	tessellator.append(iter.deviceQuad(), iter.localQuad(),
	info.fColor, kEmptyDomain, info.fAAFlags);
	}

	sk_sp<const GrBuffer> indexBuffer;
	if (vertexSpec.needsIndexBuffer()) {
	indexBuffer = GrQuadPerEdgeAA::GetIndexBuffer(target, vertexSpec.indexBufferOption());
	if (!indexBuffer) {
	SkDebugf("Could not allocate indices\n");
	return;
	}
	}

	// Configure the mesh for the vertex data
	GrMesh* mesh = target->allocMeshes(1);
	GrQuadPerEdgeAA::ConfigureMesh(target->caps(), mesh, vertexSpec, 0, fQuads.count(),
	totalNumVertices, std::move(vertexBuffer),
	std::move(indexBuffer), vertexOffsetInBuffer);
	target->recordDraw(gp, mesh, 1, vertexSpec.primitiveType());
	}

	void onExecute(GrOpFlushState* flushState, const SkRect& chainBounds) override {
	fHelper.executeDrawsAndUploads(this, flushState, chainBounds);
	}

	CombineResult onCombineIfPossible(GrOp* t, const GrCaps& caps) override {
	TRACE_EVENT0("skia.gpu", TRACE_FUNC);
	const auto* that = t->cast<FillRectOp>();

	bool upgradeToCoverageAAOnMerge = false;
	if (fHelper.aaType() != that->fHelper.aaType()) {
	if (!CanUpgradeAAOnMerge(fHelper.aaType(), that->fHelper.aaType())) {
	return CombineResult::kCannotCombine;
	}
	upgradeToCoverageAAOnMerge = true;
	}

	if (CombinedQuadCountWillOverflow(fHelper.aaType(), upgradeToCoverageAAOnMerge,
	fQuads.count() + that->fQuads.count())) {
	return CombineResult::kCannotCombine;
	}

	// Unlike most users of the draw op helper, this op can merge none-aa and coverage-aa draw
	// ops together, so pass true as the last argument.
	if (!fHelper.isCompatible(that->fHelper, caps, this->bounds(), that->bounds(), true)) {
	return CombineResult::kCannotCombine;
	}

	// If the paints were compatible, the trivial/solid-color state should be the same
	SkASSERT(fHelper.isTrivial() == that->fHelper.isTrivial());

	// If the processor sets are compatible, the two ops are always compatible; it just needs to
	// adjust the state of the op to be the more general quad and aa types of the two ops and
	// then concatenate the per-quad data.
	fColorType = SkTMax(fColorType, that->fColorType);

	// The helper stores the aa type, but isCompatible(with true arg) allows the two ops' aa
	// types to be none and coverage, in which case this op's aa type must be lifted to coverage
	// so that quads with no aa edges can be batched with quads that have some/all edges aa'ed.
	if (upgradeToCoverageAAOnMerge) {
	fHelper.setAAType(GrAAType::kCoverage);
	}

	fQuads.concat(that->fQuads);
	return CombineResult::kMerged;
	}

	// Similar to onCombineIfPossible, but adds a quad assuming its op would have been compatible.
	// But since it's avoiding the op list management, it must update the op's bounds. This is only
	// used with quad sets, which uses the same view matrix for each quad so this assumes that the
	// device quad type of the new quad is the same as the op's.
	bool addQuad(const GrQuad& deviceQuad, const GrQuad& localQuad,
	const SkPMColor4f& color, GrQuadAAFlags edgeAA, GrAAType aaType) {
	// The new quad's aa type should be the same as the first quad's or none, except when the
	// first quad's aa type was already downgraded to none, in which case the stored type must
	// be lifted to back to the requested type.
	if (aaType != fHelper.aaType() && aaType != GrAAType::kNone) {
	auto indexBufferOption = GrQuadPerEdgeAA::CalcIndexBufferOption(aaType,
	fQuads.count()+1);
	if (fQuads.count()+1 > GrQuadPerEdgeAA::QuadLimit(indexBufferOption)) {
	// Promoting to the new aaType would've caused an overflow of the indexBuffer
	// limit
	return false;
	}

	// Original quad was downgraded to non-aa, lift back up to this quad's required type
	SkASSERT(fHelper.aaType() == GrAAType::kNone);
	fHelper.setAAType(aaType);
	} else {
	auto indexBufferOption = GrQuadPerEdgeAA::CalcIndexBufferOption(fHelper.aaType(),
	fQuads.count()+1);
	if (fQuads.count()+1 > GrQuadPerEdgeAA::QuadLimit(indexBufferOption)) {
	return false; // This op can't grow any more
	}
	}

	// Update the bounds and add the quad to this op's storage
	SkRect newBounds = this->bounds();
	newBounds.joinPossiblyEmptyRect(deviceQuad.bounds());
	this->setBounds(newBounds, HasAABloat(fHelper.aaType() == GrAAType::kCoverage),
	IsHairline::kNo);
	fQuads.append(deviceQuad, { color, edgeAA }, fHelper.isTrivial() ? nullptr : &localQuad);
	return true;
	}

	struct ColorAndAA {
	SkPMColor4f fColor;
	GrQuadAAFlags fAAFlags;
	};

	Helper fHelper;
	GrQuadBuffer<ColorAndAA> fQuads;

	ColorType fColorType;

	typedef GrMeshDrawOp INHERITED;
	};

	} // anonymous namespace

	std::unique_ptr<GrDrawOp> GrFillRectOp::Make(GrRecordingContext* context,
	GrPaint&& paint,
	GrAAType aaType,
	GrQuadAAFlags aaFlags,
	const GrQuad& deviceQuad,
	const GrQuad& localQuad,
	const GrUserStencilSettings* stencil) {
	return FillRectOp::Make(context, std::move(paint), aaType, aaFlags, stencil,
	deviceQuad, localQuad);
	}

	std::unique_ptr<GrDrawOp> GrFillRectOp::MakeNonAARect(GrRecordingContext* context,
	GrPaint&& paint,
	const SkMatrix& view,
	const SkRect& rect,
	const GrUserStencilSettings* stencil) {
	return FillRectOp::Make(context, std::move(paint), GrAAType::kNone, GrQuadAAFlags::kNone,
	stencil, GrQuad::MakeFromRect(rect, view), GrQuad(rect));
	}

	std::unique_ptr<GrDrawOp> GrFillRectOp::MakeOp(GrRecordingContext* context,
	GrPaint&& paint,
	GrAAType aaType,
	const SkMatrix& viewMatrix,
	const GrRenderTargetContext::QuadSetEntry quads[],
	int cnt,
	const GrUserStencilSettings* stencilSettings,
	int* numConsumed) {
	// First make a draw op for the first quad in the set
	SkASSERT(cnt > 0);

	paint.setColor4f(quads[0].fColor);
	std::unique_ptr<GrDrawOp> op = FillRectOp::Make(
	context, std::move(paint), aaType,
	quads[0].fAAFlags, stencilSettings,
	GrQuad::MakeFromRect(quads[0].fRect, viewMatrix),
	GrQuad::MakeFromRect(quads[0].fRect, quads[0].fLocalMatrix));
	FillRectOp* fillRects = op->cast<FillRectOp>();

	*numConsumed = 1;
	// Accumulate remaining quads similar to onCombineIfPossible() without creating an op
	for (int i = 1; i < cnt; ++i) {
	GrQuad deviceQuad = GrQuad::MakeFromRect(quads[i].fRect, viewMatrix);

	GrAAType resolvedAA;
	GrQuadAAFlags resolvedEdgeFlags;
	GrQuadUtils::ResolveAAType(aaType, quads[i].fAAFlags, deviceQuad,
	&resolvedAA, &resolvedEdgeFlags);

	if (!fillRects->addQuad(deviceQuad,
	GrQuad::MakeFromRect(quads[i].fRect, quads[i].fLocalMatrix),
	quads[i].fColor, resolvedEdgeFlags, resolvedAA)) {
	break;
	}

	(*numConsumed)++;
	}

	return op;
	}

	void GrFillRectOp::AddFillRectOps(GrRenderTargetContext* rtc,
	const GrClip& clip,
	GrRecordingContext* context,
	GrPaint&& paint,
	GrAAType aaType,
	const SkMatrix& viewMatrix,
	const GrRenderTargetContext::QuadSetEntry quads[],
	int cnt,
	const GrUserStencilSettings* stencilSettings) {

	int offset = 0;
	int numLeft = cnt;
	while (numLeft) {
	int numConsumed = 0;

	std::unique_ptr<GrDrawOp> op = MakeOp(context, GrPaint::Clone(paint), aaType, viewMatrix,
	&quads[offset], numLeft, stencilSettings,
	&numConsumed);

	offset += numConsumed;
	numLeft -= numConsumed;

	rtc->addDrawOp(clip, std::move(op));
	}

	SkASSERT(offset == cnt);
	}

	#if GR_TEST_UTILS

	uint32_t GrFillRectOp::ClassID() {
	return FillRectOp::ClassID();
	}

	#include "src/gpu/GrDrawOpTest.h"
	#include "src/gpu/SkGr.h"

	GR_DRAW_OP_TEST_DEFINE(FillRectOp) {
	SkMatrix viewMatrix = GrTest::TestMatrixInvertible(random);
	SkRect rect = GrTest::TestRect(random);

	GrAAType aaType = GrAAType::kNone;
	if (random->nextBool()) {
	aaType = (numSamples > 1) ? GrAAType::kMSAA : GrAAType::kCoverage;
	}
	const GrUserStencilSettings* stencil = random->nextBool() ? nullptr
	: GrGetRandomStencil(random, context);

	GrQuadAAFlags aaFlags = GrQuadAAFlags::kNone;
	aaFlags \|= random->nextBool() ? GrQuadAAFlags::kLeft : GrQuadAAFlags::kNone;
	aaFlags \|= random->nextBool() ? GrQuadAAFlags::kTop : GrQuadAAFlags::kNone;
	aaFlags \|= random->nextBool() ? GrQuadAAFlags::kRight : GrQuadAAFlags::kNone;
	aaFlags \|= random->nextBool() ? GrQuadAAFlags::kBottom : GrQuadAAFlags::kNone;

	if (random->nextBool()) {
	if (random->nextBool()) {
	// Single local matrix
	SkMatrix localMatrix = GrTest::TestMatrixInvertible(random);
	return GrFillRectOp::Make(context, std::move(paint), aaType, aaFlags,
	GrQuad::MakeFromRect(rect, viewMatrix),
	GrQuad::MakeFromRect(rect, localMatrix), stencil);
	} else {
	// Pass local rect directly
	SkRect localRect = GrTest::TestRect(random);
	return GrFillRectOp::Make(context, std::move(paint), aaType, aaFlags,
	GrQuad::MakeFromRect(rect, viewMatrix),
	GrQuad(localRect), stencil);
	}
	} else {
	// The simplest constructor
	return GrFillRectOp::Make(context, std::move(paint), aaType, aaFlags,
	GrQuad::MakeFromRect(rect, viewMatrix),
	GrQuad(rect), stencil);
	}
	}

	#endif