Brian Salomon | 6d4b65e | 2017-05-03 17:06:09 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2017 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
| 8 | #ifndef GrSimpleMeshDrawOpHelper_DEFINED |
| 9 | #define GrSimpleMeshDrawOpHelper_DEFINED |
| 10 | |
Brian Salomon | b4d6106 | 2017-07-12 11:24:41 -0400 | [diff] [blame^] | 11 | #include "GrMeshDrawOp.h" |
Brian Salomon | 6d4b65e | 2017-05-03 17:06:09 -0400 | [diff] [blame] | 12 | #include "GrOpFlushState.h" |
| 13 | #include "GrPipeline.h" |
Brian Salomon | b4d6106 | 2017-07-12 11:24:41 -0400 | [diff] [blame^] | 14 | |
| 15 | struct SkRect; |
Brian Salomon | 6d4b65e | 2017-05-03 17:06:09 -0400 | [diff] [blame] | 16 | |
| 17 | /** |
| 18 | * This class can be used to help implement simple mesh draw ops. It reduces the amount of |
| 19 | * boilerplate code to type and also provides a mechanism for optionally allocating space for a |
| 20 | * GrProcessorSet based on a GrPaint. It is intended to be used by ops that construct a single |
| 21 | * GrPipeline for a uniform primitive color and a GrPaint. |
| 22 | */ |
| 23 | class GrSimpleMeshDrawOpHelper { |
| 24 | public: |
| 25 | struct MakeArgs; |
| 26 | |
| 27 | /** |
| 28 | * This can be used by a Op class to perform allocation and initialization such that a |
Brian Salomon | b4d6106 | 2017-07-12 11:24:41 -0400 | [diff] [blame^] | 29 | * GrProcessorSet (if required) is allocated as part of the the same allocation that as |
| 30 | * the Op instance. It requires that Op implements a constructor of the form: |
Brian Salomon | 6d4b65e | 2017-05-03 17:06:09 -0400 | [diff] [blame] | 31 | * Op(MakeArgs, GrColor, OpArgs...) |
| 32 | * which is public or made accessible via 'friend'. |
| 33 | */ |
| 34 | template <typename Op, typename... OpArgs> |
| 35 | static std::unique_ptr<GrDrawOp> FactoryHelper(GrPaint&& paint, OpArgs... opArgs); |
| 36 | |
Brian Salomon | baaf439 | 2017-06-15 09:59:23 -0400 | [diff] [blame] | 37 | enum class Flags : uint32_t { |
| 38 | kNone = 0x0, |
| 39 | kSnapVerticesToPixelCenters = 0x1, |
| 40 | }; |
| 41 | GR_DECL_BITFIELD_CLASS_OPS_FRIENDS(Flags); |
| 42 | |
Brian Salomon | b4d6106 | 2017-07-12 11:24:41 -0400 | [diff] [blame^] | 43 | GrSimpleMeshDrawOpHelper(const MakeArgs&, GrAAType, Flags = Flags::kNone); |
| 44 | ~GrSimpleMeshDrawOpHelper(); |
Brian Salomon | 6d4b65e | 2017-05-03 17:06:09 -0400 | [diff] [blame] | 45 | |
| 46 | GrSimpleMeshDrawOpHelper() = delete; |
| 47 | GrSimpleMeshDrawOpHelper(const GrSimpleMeshDrawOpHelper&) = delete; |
| 48 | GrSimpleMeshDrawOpHelper& operator=(const GrSimpleMeshDrawOpHelper&) = delete; |
| 49 | |
Brian Salomon | b4d6106 | 2017-07-12 11:24:41 -0400 | [diff] [blame^] | 50 | GrDrawOp::FixedFunctionFlags fixedFunctionFlags() const; |
Brian Salomon | 6d4b65e | 2017-05-03 17:06:09 -0400 | [diff] [blame] | 51 | |
Brian Salomon | b4d6106 | 2017-07-12 11:24:41 -0400 | [diff] [blame^] | 52 | bool isCompatible(const GrSimpleMeshDrawOpHelper& that, const GrCaps&, const SkRect& thisBounds, |
| 53 | const SkRect& thatBounds) const; |
Brian Salomon | 6d4b65e | 2017-05-03 17:06:09 -0400 | [diff] [blame] | 54 | |
Brian Salomon | b4d6106 | 2017-07-12 11:24:41 -0400 | [diff] [blame^] | 55 | GrDrawOp::RequiresDstTexture xpRequiresDstTexture(const GrCaps&, const GrAppliedClip*, |
Brian Salomon | f86d37b | 2017-06-16 10:04:34 -0400 | [diff] [blame] | 56 | GrProcessorAnalysisCoverage geometryCoverage, |
Brian Salomon | b4d6106 | 2017-07-12 11:24:41 -0400 | [diff] [blame^] | 57 | GrColor* color); |
Brian Salomon | 6d4b65e | 2017-05-03 17:06:09 -0400 | [diff] [blame] | 58 | |
Brian Salomon | 05441c4 | 2017-05-15 16:45:49 -0400 | [diff] [blame] | 59 | bool usesLocalCoords() const { |
| 60 | SkASSERT(fDidAnalysis); |
| 61 | return fUsesLocalCoords; |
| 62 | } |
| 63 | |
Brian Salomon | 28207df | 2017-06-05 12:25:13 -0400 | [diff] [blame] | 64 | bool compatibleWithAlphaAsCoverage() const { return fCompatibleWithAlphaAsCoveage; } |
| 65 | |
Brian Salomon | 6d4b65e | 2017-05-03 17:06:09 -0400 | [diff] [blame] | 66 | GrPipeline* makePipeline(GrMeshDrawOp::Target* target) const { |
| 67 | return target->allocPipeline(this->pipelineInitArgs(target)); |
| 68 | } |
| 69 | |
| 70 | struct MakeArgs { |
| 71 | private: |
| 72 | MakeArgs() = default; |
| 73 | |
| 74 | GrProcessorSet* fProcessorSet; |
| 75 | uint32_t fSRGBFlags; |
| 76 | |
| 77 | friend class GrSimpleMeshDrawOpHelper; |
| 78 | }; |
| 79 | |
Brian Salomon | b4d6106 | 2017-07-12 11:24:41 -0400 | [diff] [blame^] | 80 | SkString dumpInfo() const; |
Brian Salomon | 82dfd3d | 2017-06-14 12:30:35 -0400 | [diff] [blame] | 81 | |
Brian Salomon | 6d4b65e | 2017-05-03 17:06:09 -0400 | [diff] [blame] | 82 | protected: |
| 83 | GrAAType aaType() const { return static_cast<GrAAType>(fAAType); } |
| 84 | uint32_t pipelineFlags() const { return fPipelineFlags; } |
| 85 | const GrProcessorSet& processors() const { |
| 86 | return fProcessors ? *fProcessors : GrProcessorSet::EmptySet(); |
| 87 | } |
| 88 | |
Brian Salomon | b4d6106 | 2017-07-12 11:24:41 -0400 | [diff] [blame^] | 89 | GrPipeline::InitArgs pipelineInitArgs(GrMeshDrawOp::Target* target) const; |
Brian Salomon | 6d4b65e | 2017-05-03 17:06:09 -0400 | [diff] [blame] | 90 | |
| 91 | private: |
| 92 | GrProcessorSet* fProcessors; |
| 93 | unsigned fPipelineFlags : 8; |
| 94 | unsigned fAAType : 2; |
Brian Salomon | a4677b5 | 2017-05-04 12:39:56 -0400 | [diff] [blame] | 95 | unsigned fRequiresDstTexture : 1; |
Brian Salomon | 05441c4 | 2017-05-15 16:45:49 -0400 | [diff] [blame] | 96 | unsigned fUsesLocalCoords : 1; |
Brian Salomon | 28207df | 2017-06-05 12:25:13 -0400 | [diff] [blame] | 97 | unsigned fCompatibleWithAlphaAsCoveage : 1; |
Brian Salomon | 05441c4 | 2017-05-15 16:45:49 -0400 | [diff] [blame] | 98 | SkDEBUGCODE(unsigned fDidAnalysis : 1;) |
Brian Salomon | 6d4b65e | 2017-05-03 17:06:09 -0400 | [diff] [blame] | 99 | }; |
| 100 | |
| 101 | /** |
| 102 | * This class extends GrSimpleMeshDrawOpHelper to support an optional GrUserStencilSettings. This |
| 103 | * uses private inheritance because it non-virtually overrides methods in the base class and should |
| 104 | * never be used with a GrSimpleMeshDrawOpHelper pointer or reference. |
| 105 | */ |
| 106 | class GrSimpleMeshDrawOpHelperWithStencil : private GrSimpleMeshDrawOpHelper { |
| 107 | public: |
| 108 | using MakeArgs = GrSimpleMeshDrawOpHelper::MakeArgs; |
Brian Salomon | baaf439 | 2017-06-15 09:59:23 -0400 | [diff] [blame] | 109 | using Flags = GrSimpleMeshDrawOpHelper::Flags; |
Brian Salomon | 6d4b65e | 2017-05-03 17:06:09 -0400 | [diff] [blame] | 110 | |
| 111 | // using declarations can't be templated, so this is a pass through function instead. |
| 112 | template <typename Op, typename... OpArgs> |
| 113 | static std::unique_ptr<GrDrawOp> FactoryHelper(GrPaint&& paint, OpArgs... opArgs) { |
| 114 | return GrSimpleMeshDrawOpHelper::FactoryHelper<Op, OpArgs...>( |
| 115 | std::move(paint), std::forward<OpArgs>(opArgs)...); |
| 116 | } |
| 117 | |
Brian Salomon | b4d6106 | 2017-07-12 11:24:41 -0400 | [diff] [blame^] | 118 | GrSimpleMeshDrawOpHelperWithStencil(const MakeArgs&, GrAAType, const GrUserStencilSettings*, |
| 119 | Flags = Flags::kNone); |
Brian Salomon | 6d4b65e | 2017-05-03 17:06:09 -0400 | [diff] [blame] | 120 | |
Brian Salomon | b4d6106 | 2017-07-12 11:24:41 -0400 | [diff] [blame^] | 121 | GrDrawOp::FixedFunctionFlags fixedFunctionFlags() const; |
Brian Salomon | 6d4b65e | 2017-05-03 17:06:09 -0400 | [diff] [blame] | 122 | |
| 123 | using GrSimpleMeshDrawOpHelper::xpRequiresDstTexture; |
Brian Salomon | 05441c4 | 2017-05-15 16:45:49 -0400 | [diff] [blame] | 124 | using GrSimpleMeshDrawOpHelper::usesLocalCoords; |
Brian Salomon | baaf439 | 2017-06-15 09:59:23 -0400 | [diff] [blame] | 125 | using GrSimpleMeshDrawOpHelper::compatibleWithAlphaAsCoverage; |
Brian Salomon | 6d4b65e | 2017-05-03 17:06:09 -0400 | [diff] [blame] | 126 | |
Brian Salomon | b4d6106 | 2017-07-12 11:24:41 -0400 | [diff] [blame^] | 127 | bool isCompatible(const GrSimpleMeshDrawOpHelperWithStencil& that, const GrCaps&, |
| 128 | const SkRect& thisBounds, const SkRect& thatBounds) const; |
Brian Salomon | 6d4b65e | 2017-05-03 17:06:09 -0400 | [diff] [blame] | 129 | |
Brian Salomon | b4d6106 | 2017-07-12 11:24:41 -0400 | [diff] [blame^] | 130 | const GrPipeline* makePipeline(GrMeshDrawOp::Target*) const; |
Brian Salomon | 6d4b65e | 2017-05-03 17:06:09 -0400 | [diff] [blame] | 131 | |
Brian Salomon | b4d6106 | 2017-07-12 11:24:41 -0400 | [diff] [blame^] | 132 | SkString dumpInfo() const; |
Brian Salomon | 82dfd3d | 2017-06-14 12:30:35 -0400 | [diff] [blame] | 133 | |
Brian Salomon | 6d4b65e | 2017-05-03 17:06:09 -0400 | [diff] [blame] | 134 | private: |
| 135 | const GrUserStencilSettings* fStencilSettings; |
| 136 | typedef GrSimpleMeshDrawOpHelper INHERITED; |
| 137 | }; |
| 138 | |
| 139 | template <typename Op, typename... OpArgs> |
| 140 | std::unique_ptr<GrDrawOp> GrSimpleMeshDrawOpHelper::FactoryHelper(GrPaint&& paint, |
| 141 | OpArgs... opArgs) { |
| 142 | MakeArgs makeArgs; |
| 143 | makeArgs.fSRGBFlags = GrPipeline::SRGBFlagsFromPaint(paint); |
| 144 | GrColor color = paint.getColor(); |
| 145 | if (paint.isTrivial()) { |
| 146 | makeArgs.fProcessorSet = nullptr; |
| 147 | return std::unique_ptr<GrDrawOp>(new Op(makeArgs, color, std::forward<OpArgs>(opArgs)...)); |
| 148 | } else { |
| 149 | char* mem = (char*)GrOp::operator new(sizeof(Op) + sizeof(GrProcessorSet)); |
| 150 | char* setMem = mem + sizeof(Op); |
| 151 | makeArgs.fProcessorSet = new (setMem) GrProcessorSet(std::move(paint)); |
| 152 | return std::unique_ptr<GrDrawOp>( |
| 153 | new (mem) Op(makeArgs, color, std::forward<OpArgs>(opArgs)...)); |
| 154 | } |
| 155 | } |
| 156 | |
Brian Salomon | baaf439 | 2017-06-15 09:59:23 -0400 | [diff] [blame] | 157 | GR_MAKE_BITFIELD_CLASS_OPS(GrSimpleMeshDrawOpHelper::Flags) |
| 158 | |
Brian Salomon | 6d4b65e | 2017-05-03 17:06:09 -0400 | [diff] [blame] | 159 | #endif |