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// Copyright 2017 The Dawn Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef DAWNNATIVE_SAMPLER_H_
#define DAWNNATIVE_SAMPLER_H_
#include "dawn_native/CachedObject.h"
#include "dawn_native/Error.h"
#include "dawn_native/Forward.h"
#include "dawn_native/ObjectBase.h"
#include "dawn_native/dawn_platform.h"
namespace dawn_native {
class DeviceBase;
MaybeError ValidateSamplerDescriptor(DeviceBase* device, const SamplerDescriptor* descriptor);
class SamplerBase : public ApiObjectBase, public CachedObject {
public:
SamplerBase(DeviceBase* device,
const SamplerDescriptor* descriptor,
ApiObjectBase::UntrackedByDeviceTag tag);
SamplerBase(DeviceBase* device, const SamplerDescriptor* descriptor);
~SamplerBase() override;
static SamplerBase* MakeError(DeviceBase* device);
bool Destroy() override;
ObjectType GetType() const override;
bool IsComparison() const;
bool IsFiltering() const;
// Functions necessary for the unordered_set<SamplerBase*>-based cache.
size_t ComputeContentHash() override;
struct EqualityFunc {
bool operator()(const SamplerBase* a, const SamplerBase* b) const;
};
uint16_t GetMaxAnisotropy() const {
return mMaxAnisotropy;
}
protected:
// Constructor used only for mocking and testing.
SamplerBase(DeviceBase* device);
private:
SamplerBase(DeviceBase* device, ObjectBase::ErrorTag tag);
// TODO(cwallez@chromium.org): Store a crypto hash of the items instead?
wgpu::AddressMode mAddressModeU;
wgpu::AddressMode mAddressModeV;
wgpu::AddressMode mAddressModeW;
wgpu::FilterMode mMagFilter;
wgpu::FilterMode mMinFilter;
wgpu::FilterMode mMipmapFilter;
float mLodMinClamp;
float mLodMaxClamp;
wgpu::CompareFunction mCompareFunction;
uint16_t mMaxAnisotropy;
};
} // namespace dawn_native
#endif // DAWNNATIVE_SAMPLER_H_