117 lines
2.8 KiB
C
117 lines
2.8 KiB
C
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/*
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* Copyright 2022 Google LLC
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkCombinationBuilder_DEFINED
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#define SkCombinationBuilder_DEFINED
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#include <functional>
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#include <memory>
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#include <vector>
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#include "include/core/SkBlendMode.h"
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#include "include/core/SkTileMode.h"
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class SkArenaAllocWithReset;
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class SkPaintCombinations;
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class SkPaintParamsKeyBuilder;
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class SkShaderCodeDictionary;
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class SkUniquePaintParamsID;
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namespace skgpu::graphite {
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class Context;
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}
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enum class SkShaderType : uint32_t {
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kSolidColor,
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kLinearGradient,
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kRadialGradient,
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kSweepGradient,
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kConicalGradient,
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kLocalMatrix,
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kImage,
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kBlendShader
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};
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// TODO: remove this class
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struct SkShaderCombo {
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SkShaderCombo() {}
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SkShaderCombo(std::vector<SkShaderType> types,
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std::vector<SkTileMode> tileModes)
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: fTypes(std::move(types))
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, fTileModes(std::move(tileModes)) {
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}
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std::vector<SkShaderType> fTypes;
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std::vector<SkTileMode> fTileModes;
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};
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// TODO: add SkShaderID and SkColorFilterID too
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class SkBlenderID {
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public:
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SkBlenderID() : fID(0) {} // 0 is an invalid blender ID
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SkBlenderID(const SkBlenderID& src) : fID(src.fID) {}
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bool isValid() const { return fID > 0; }
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bool operator==(const SkBlenderID& other) const { return fID == other.fID; }
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SkBlenderID& operator=(const SkBlenderID& src) {
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fID = src.fID;
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return *this;
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}
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private:
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friend class SkShaderCodeDictionary; // for ctor and asUInt access
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friend class SkCombinationBuilder; // for asUInt access
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friend class SkPaintCombinations; // for asUInt access
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SkBlenderID(uint32_t id) : fID(id) {}
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uint32_t asUInt() const { return fID; }
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uint32_t fID;
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};
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class SkCombinationBuilder {
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public:
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enum class BlendModeGroup {
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kPorterDuff, // [ kClear .. kScreen ]
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kAdvanced, // [ kOverlay .. kMultiply ]
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kColorAware, // [ kHue .. kLuminosity ]
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kAll
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};
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#ifdef SK_GRAPHITE_ENABLED
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SkCombinationBuilder(skgpu::graphite::Context*);
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#else
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SkCombinationBuilder(SkShaderCodeDictionary*);
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#endif
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// Blend Modes
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void add(SkBlendMode);
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void add(SkBlendMode rangeStart, SkBlendMode rangeEnd); // inclusive
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void add(BlendModeGroup);
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void add(SkBlenderID);
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// Shaders
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void add(SkShaderCombo);
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void reset();
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private:
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friend class skgpu::graphite::Context; // for access to buildCombinations
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void buildCombinations(SkShaderCodeDictionary*,
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const std::function<void(SkUniquePaintParamsID)>&) const;
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SkShaderCodeDictionary* fDictionary;
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std::unique_ptr<SkArenaAllocWithReset> fArena;
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SkPaintCombinations* fCombinations;
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};
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#endif // SkCombinationBuilder_DEFINED
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