70 lines
2.1 KiB
C
70 lines
2.1 KiB
C
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/*
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* Copyright 2015 Google Inc.
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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 GrSamplerState_DEFINED
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#define GrSamplerState_DEFINED
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#include "GrTypes.h"
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/**
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* Represents the filtering and tile modes used to access a texture.
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*/
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class GrSamplerState {
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public:
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enum class Filter : uint8_t { kNearest, kBilerp, kMipMap };
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enum class WrapMode : uint8_t { kClamp, kRepeat, kMirrorRepeat };
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static constexpr GrSamplerState ClampNearest() { return GrSamplerState(); }
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static constexpr GrSamplerState ClampBilerp() {
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return GrSamplerState(WrapMode::kClamp, Filter::kBilerp);
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}
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constexpr GrSamplerState() : GrSamplerState(WrapMode::kClamp, Filter::kNearest) {}
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constexpr GrSamplerState(WrapMode wrapXAndY, Filter filter)
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: fWrapModes{wrapXAndY, wrapXAndY}, fFilter(filter) {}
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constexpr GrSamplerState(const WrapMode wrapModes[2], Filter filter)
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: fWrapModes{wrapModes[0], wrapModes[1]}, fFilter(filter) {}
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constexpr GrSamplerState(const GrSamplerState&) = default;
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GrSamplerState& operator=(const GrSamplerState& that) {
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fWrapModes[0] = that.fWrapModes[0];
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fWrapModes[1] = that.fWrapModes[1];
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fFilter = that.fFilter;
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return *this;
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}
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Filter filter() const { return fFilter; }
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void setFilterMode(Filter filterMode) { fFilter = filterMode; }
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void setWrapModeX(const WrapMode wrap) { fWrapModes[0] = wrap; }
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void setWrapModeY(const WrapMode wrap) { fWrapModes[1] = wrap; }
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WrapMode wrapModeX() const { return fWrapModes[0]; }
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WrapMode wrapModeY() const { return fWrapModes[1]; }
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bool isRepeated() const {
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return WrapMode::kClamp != fWrapModes[0] || WrapMode::kClamp != fWrapModes[1];
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}
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bool operator==(const GrSamplerState& that) const {
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return fWrapModes[0] == that.fWrapModes[0] && fWrapModes[1] == that.fWrapModes[1] &&
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fFilter == that.fFilter;
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}
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bool operator!=(const GrSamplerState& that) const { return !(*this == that); }
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private:
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WrapMode fWrapModes[2];
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Filter fFilter;
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};
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#endif
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