| // 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_BINDGROUP_H_ |
| #define DAWNNATIVE_BINDGROUP_H_ |
| |
| #include "common/Constants.h" |
| #include "common/Math.h" |
| #include "dawn_native/BindGroupLayout.h" |
| #include "dawn_native/Error.h" |
| #include "dawn_native/Forward.h" |
| #include "dawn_native/ObjectBase.h" |
| |
| #include "dawn_native/dawn_platform.h" |
| |
| #include <array> |
| |
| namespace dawn::native { |
| |
| class DeviceBase; |
| |
| MaybeError ValidateBindGroupDescriptor(DeviceBase* device, |
| const BindGroupDescriptor* descriptor); |
| |
| struct BufferBinding { |
| BufferBase* buffer; |
| uint64_t offset; |
| uint64_t size; |
| }; |
| |
| class BindGroupBase : public ApiObjectBase { |
| public: |
| static BindGroupBase* MakeError(DeviceBase* device); |
| |
| ObjectType GetType() const override; |
| |
| BindGroupLayoutBase* GetLayout(); |
| const BindGroupLayoutBase* GetLayout() const; |
| BufferBinding GetBindingAsBufferBinding(BindingIndex bindingIndex); |
| SamplerBase* GetBindingAsSampler(BindingIndex bindingIndex) const; |
| TextureViewBase* GetBindingAsTextureView(BindingIndex bindingIndex); |
| const ityp::span<uint32_t, uint64_t>& GetUnverifiedBufferSizes() const; |
| ExternalTextureBase* GetBindingAsExternalTexture(BindingIndex bindingIndex); |
| |
| protected: |
| // To save memory, the size of a bind group is dynamically determined and the bind group is |
| // placement-allocated into memory big enough to hold the bind group with its |
| // dynamically-sized bindings after it. The pointer of the memory of the beginning of the |
| // binding data should be passed as |bindingDataStart|. |
| BindGroupBase(DeviceBase* device, |
| const BindGroupDescriptor* descriptor, |
| void* bindingDataStart); |
| |
| // Helper to instantiate BindGroupBase. We pass in |derived| because BindGroupBase may not |
| // be first in the allocation. The binding data is stored after the Derived class. |
| template <typename Derived> |
| BindGroupBase(Derived* derived, DeviceBase* device, const BindGroupDescriptor* descriptor) |
| : BindGroupBase(device, |
| descriptor, |
| AlignPtr(reinterpret_cast<char*>(derived) + sizeof(Derived), |
| descriptor->layout->GetBindingDataAlignment())) { |
| static_assert(std::is_base_of<BindGroupBase, Derived>::value, ""); |
| } |
| |
| // Constructor used only for mocking and testing. |
| BindGroupBase(DeviceBase* device); |
| void DestroyImpl() override; |
| |
| ~BindGroupBase() override; |
| |
| private: |
| BindGroupBase(DeviceBase* device, ObjectBase::ErrorTag tag); |
| void DeleteThis() override; |
| |
| Ref<BindGroupLayoutBase> mLayout; |
| BindGroupLayoutBase::BindingDataPointers mBindingData; |
| }; |
| |
| } // namespace dawn::native |
| |
| #endif // DAWNNATIVE_BINDGROUP_H_ |