1 // Copyright 2017 The Dawn Authors 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #ifndef DAWNNATIVE_SAMPLER_H_ 16 #define DAWNNATIVE_SAMPLER_H_ 17 18 #include "dawn_native/CachedObject.h" 19 #include "dawn_native/Error.h" 20 #include "dawn_native/Forward.h" 21 #include "dawn_native/ObjectBase.h" 22 23 #include "dawn_native/dawn_platform.h" 24 25 namespace dawn_native { 26 27 class DeviceBase; 28 29 MaybeError ValidateSamplerDescriptor(DeviceBase* device, const SamplerDescriptor* descriptor); 30 31 class SamplerBase : public ApiObjectBase, public CachedObject { 32 public: 33 SamplerBase(DeviceBase* device, 34 const SamplerDescriptor* descriptor, 35 ApiObjectBase::UntrackedByDeviceTag tag); 36 SamplerBase(DeviceBase* device, const SamplerDescriptor* descriptor); 37 ~SamplerBase() override; 38 39 static SamplerBase* MakeError(DeviceBase* device); 40 41 ObjectType GetType() const override; 42 43 bool IsComparison() const; 44 bool IsFiltering() const; 45 46 // Functions necessary for the unordered_set<SamplerBase*>-based cache. 47 size_t ComputeContentHash() override; 48 49 struct EqualityFunc { 50 bool operator()(const SamplerBase* a, const SamplerBase* b) const; 51 }; 52 GetMaxAnisotropy()53 uint16_t GetMaxAnisotropy() const { 54 return mMaxAnisotropy; 55 } 56 57 protected: 58 // Constructor used only for mocking and testing. 59 SamplerBase(DeviceBase* device); 60 void DestroyImpl() override; 61 62 private: 63 SamplerBase(DeviceBase* device, ObjectBase::ErrorTag tag); 64 65 // TODO(cwallez@chromium.org): Store a crypto hash of the items instead? 66 wgpu::AddressMode mAddressModeU; 67 wgpu::AddressMode mAddressModeV; 68 wgpu::AddressMode mAddressModeW; 69 wgpu::FilterMode mMagFilter; 70 wgpu::FilterMode mMinFilter; 71 wgpu::FilterMode mMipmapFilter; 72 float mLodMinClamp; 73 float mLodMaxClamp; 74 wgpu::CompareFunction mCompareFunction; 75 uint16_t mMaxAnisotropy; 76 }; 77 78 } // namespace dawn_native 79 80 #endif // DAWNNATIVE_SAMPLER_H_ 81