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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_PIPELINELAYOUTD3D12_H_
#define DAWNNATIVE_D3D12_PIPELINELAYOUTD3D12_H_
#include "dawn/common/Constants.h"
#include "dawn/common/ityp_array.h"
#include "dawn/native/BindingInfo.h"
#include "dawn/native/PipelineLayout.h"
#include "dawn/native/d3d12/d3d12_platform.h"
namespace dawn::native::d3d12 {
class Device;
class PipelineLayout final : public PipelineLayoutBase {
public:
static ResultOrError<Ref<PipelineLayout>> Create(
Device* device,
const PipelineLayoutDescriptor* descriptor);
uint32_t GetCbvUavSrvRootParameterIndex(BindGroupIndex group) const;
uint32_t GetSamplerRootParameterIndex(BindGroupIndex group) const;
// Returns the index of the root parameter reserved for a dynamic buffer binding
uint32_t GetDynamicRootParameterIndex(BindGroupIndex group,
BindingIndex bindingIndex) const;
uint32_t GetFirstIndexOffsetRegisterSpace() const;
uint32_t GetFirstIndexOffsetShaderRegister() const;
uint32_t GetFirstIndexOffsetParameterIndex() const;
uint32_t GetNumWorkgroupsRegisterSpace() const;
uint32_t GetNumWorkgroupsShaderRegister() const;
uint32_t GetNumWorkgroupsParameterIndex() const;
uint32_t GetDynamicStorageBufferLengthsRegisterSpace() const;
uint32_t GetDynamicStorageBufferLengthsShaderRegister() const;
uint32_t GetDynamicStorageBufferLengthsParameterIndex() const;
ID3D12RootSignature* GetRootSignature() const;
ID3D12CommandSignature* GetDispatchIndirectCommandSignatureWithNumWorkgroups();
struct PerBindGroupDynamicStorageBufferLengthInfo {
// First register offset for a bind group's dynamic storage buffer lengths.
// This is the index into the array of root constants where this bind group's
// lengths start.
uint32_t firstRegisterOffset;
struct BindingAndRegisterOffset {
BindingNumber binding;
uint32_t registerOffset;
};
// Associative list of (BindingNumber,registerOffset) pairs, which is passed into
// the shader to map the BindingPoint(thisGroup, BindingNumber) to the registerOffset
// into the root constant array which holds the dynamic storage buffer lengths.
std::vector<BindingAndRegisterOffset> bindingAndRegisterOffsets;
};
// Flat map from bind group index to the list of (BindingNumber,Register) pairs.
// Each pair is used in shader translation to
using DynamicStorageBufferLengthInfo =
ityp::array<BindGroupIndex, PerBindGroupDynamicStorageBufferLengthInfo, kMaxBindGroups>;
const DynamicStorageBufferLengthInfo& GetDynamicStorageBufferLengthInfo() const;
private:
~PipelineLayout() override = default;
using PipelineLayoutBase::PipelineLayoutBase;
MaybeError Initialize();
ityp::array<BindGroupIndex, uint32_t, kMaxBindGroups> mCbvUavSrvRootParameterInfo;
ityp::array<BindGroupIndex, uint32_t, kMaxBindGroups> mSamplerRootParameterInfo;
ityp::array<BindGroupIndex,
ityp::array<BindingIndex, uint32_t, kMaxDynamicBuffersPerPipelineLayout>,
kMaxBindGroups>
mDynamicRootParameterIndices;
DynamicStorageBufferLengthInfo mDynamicStorageBufferLengthInfo;
uint32_t mFirstIndexOffsetParameterIndex;
uint32_t mNumWorkgroupsParameterIndex;
uint32_t mDynamicStorageBufferLengthsParameterIndex;
ComPtr<ID3D12RootSignature> mRootSignature;
ComPtr<ID3D12CommandSignature> mDispatchIndirectCommandSignatureWithNumWorkgroups;
};
} // namespace dawn::native::d3d12
#endif // DAWNNATIVE_D3D12_PIPELINELAYOUTD3D12_H_