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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_D3D12_BINDGROUPLAYOUTD3D12_H_
#define DAWNNATIVE_D3D12_BINDGROUPLAYOUTD3D12_H_
#include "dawn_native/BindGroupLayout.h"
#include "common/SlabAllocator.h"
#include "common/ityp_stack_vec.h"
#include "dawn_native/d3d12/d3d12_platform.h"
namespace dawn_native { namespace d3d12 {
class BindGroup;
class CPUDescriptorHeapAllocation;
class Device;
class StagingDescriptorAllocator;
class BindGroupLayout final : public BindGroupLayoutBase {
public:
static Ref<BindGroupLayout> Create(Device* device,
const BindGroupLayoutDescriptor* descriptor);
ResultOrError<Ref<BindGroup>> AllocateBindGroup(Device* device,
const BindGroupDescriptor* descriptor);
void DeallocateBindGroup(BindGroup* bindGroup, CPUDescriptorHeapAllocation* viewAllocation);
enum DescriptorType {
CBV,
UAV,
SRV,
Sampler,
Count,
};
ityp::span<BindingIndex, const uint32_t> GetBindingOffsets() const;
uint32_t GetCbvUavSrvDescriptorTableSize() const;
uint32_t GetSamplerDescriptorTableSize() const;
uint32_t GetCbvUavSrvDescriptorCount() const;
uint32_t GetSamplerDescriptorCount() const;
const D3D12_DESCRIPTOR_RANGE* GetCbvUavSrvDescriptorRanges() const;
const D3D12_DESCRIPTOR_RANGE* GetSamplerDescriptorRanges() const;
private:
BindGroupLayout(Device* device, const BindGroupLayoutDescriptor* descriptor);
~BindGroupLayout() override = default;
ityp::stack_vec<BindingIndex, uint32_t, kMaxOptimalBindingsPerGroup> mBindingOffsets;
std::array<uint32_t, DescriptorType::Count> mDescriptorCounts;
D3D12_DESCRIPTOR_RANGE mRanges[DescriptorType::Count];
SlabAllocator<BindGroup> mBindGroupAllocator;
StagingDescriptorAllocator* mSamplerAllocator = nullptr;
StagingDescriptorAllocator* mViewAllocator = nullptr;
};
}} // namespace dawn_native::d3d12
#endif // DAWNNATIVE_D3D12_BINDGROUPLAYOUTD3D12_H_