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/*
* Copyright 2019-2021 Diligent Graphics LLC
* Copyright 2015-2019 Egor Yusov
*
* 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.
*
* In no event and under no legal theory, whether in tort (including negligence),
* contract, or otherwise, unless required by applicable law (such as deliberate
* and grossly negligent acts) or agreed to in writing, shall any Contributor be
* liable for any damages, including any direct, indirect, special, incidental,
* or consequential damages of any character arising as a result of this License or
* out of the use or inability to use the software (including but not limited to damages
* for loss of goodwill, work stoppage, computer failure or malfunction, or any and
* all other commercial damages or losses), even if such Contributor has been advised
* of the possibility of such damages.
*/
#pragma once
/// \file
/// Declaration of Diligent::PipelineResourceAttribsD3D12 struct
#include "BasicTypes.h"
#include "PrivateConstants.h"
#include "ShaderResourceCacheCommon.hpp"
#include "DebugUtilities.hpp"
#include "HashUtils.hpp"
namespace Diligent
{
// sizeof(ResourceAttribs) == 16, x64
struct PipelineResourceAttribsD3D12
{
private:
static constexpr Uint32 _RegisterBits = 16;
static constexpr Uint32 _SRBRootIndexBits = 16;
static constexpr Uint32 _SamplerIndBits = 16;
static constexpr Uint32 _SpaceBits = 8;
static constexpr Uint32 _SigRootIndexBits = 3;
static constexpr Uint32 _SamplerAssignedBits = 1;
static constexpr Uint32 _RootParamTypeBits = 3;
// clang-format off
static_assert((1u << _RegisterBits) >= MAX_RESOURCES_IN_SIGNATURE, "Not enough bits to store shader register");
static_assert((1u << _SamplerIndBits) >= MAX_RESOURCES_IN_SIGNATURE, "Not enough bits to store sampler resource index");
static_assert((1u << _RootParamTypeBits) > D3D12_ROOT_PARAMETER_TYPE_UAV + 1, "Not enough bits to store D3D12_ROOT_PARAMETER_TYPE");
// clang-format on
public:
static constexpr Uint32 InvalidSamplerInd = (1u << _SamplerIndBits) - 1;
static constexpr Uint32 InvalidSRBRootIndex = (1u << _SRBRootIndexBits) - 1;
static constexpr Uint32 InvalidSigRootIndex = (1u << _SigRootIndexBits) - 1;
static constexpr Uint32 InvalidRegister = (1u << _RegisterBits) - 1;
static constexpr Uint32 InvalidOffset = ~0u;
// clang-format off
/* 0 */const Uint32 Register : _RegisterBits; // Shader register
/* 2 */const Uint32 SRBRootIndex : _SRBRootIndexBits; // Root view/table index in the SRB
/* 4 */const Uint32 SamplerInd : _SamplerIndBits; // Assigned sampler index in m_Desc.Resources and m_pResourceAttribs
/* 6 */const Uint32 Space : _SpaceBits; // Shader register space
/* 7.0*/const Uint32 SigRootIndex : _SigRootIndexBits; // Root table index for signature (static resources only)
/* 7.3*/const Uint32 ImtblSamplerAssigned : _SamplerAssignedBits; // Immutable sampler flag
/* 7.4*/const Uint32 RootParamType : _RootParamTypeBits; // Root parameter type (D3D12_ROOT_PARAMETER_TYPE)
/* 8 */const Uint32 SigOffsetFromTableStart; // Offset in the root table for signature (static only)
/* 12 */const Uint32 SRBOffsetFromTableStart; // Offset in the root table for SRB
/* 16 */
// clang-format on
PipelineResourceAttribsD3D12(Uint32 _Register,
Uint32 _Space,
Uint32 _SamplerInd,
Uint32 _SRBRootIndex,
Uint32 _SRBOffsetFromTableStart,
Uint32 _SigRootIndex,
Uint32 _SigOffsetFromTableStart,
bool _ImtblSamplerAssigned,
D3D12_ROOT_PARAMETER_TYPE _RootParamType) noexcept :
// clang-format off
Register {_Register },
SRBRootIndex {_SRBRootIndex },
SamplerInd {_SamplerInd },
SigRootIndex {_SigRootIndex },
Space {_Space },
ImtblSamplerAssigned {_ImtblSamplerAssigned ? 1u : 0u },
RootParamType {static_cast<Uint32>(_RootParamType)},
SigOffsetFromTableStart{_SigOffsetFromTableStart },
SRBOffsetFromTableStart{_SRBOffsetFromTableStart }
// clang-format on
{
VERIFY(Register == _Register, "Shader register (", _Register, ") exceeds maximum representable value");
VERIFY(SRBRootIndex == _SRBRootIndex, "SRB Root index (", _SRBRootIndex, ") exceeds maximum representable value");
VERIFY(SigRootIndex == _SigRootIndex, "Signature Root index (", _SigRootIndex, ") exceeds maximum representable value");
VERIFY(SamplerInd == _SamplerInd, "Sampler index (", _SamplerInd, ") exceeds maximum representable value");
VERIFY(Space == _Space, "Space (", _Space, ") exceeds maximum representable value");
VERIFY(GetD3D12RootParamType() == _RootParamType, "Not enough bits to represent root parameter type");
}
bool IsImmutableSamplerAssigned() const
{
return ImtblSamplerAssigned != 0;
}
bool IsCombinedWithSampler() const
{
return SamplerInd != InvalidSamplerInd;
}
Uint32 RootIndex(ResourceCacheContentType Type) const
{
return Type == ResourceCacheContentType::SRB ? SRBRootIndex : SigRootIndex;
}
Uint32 OffsetFromTableStart(ResourceCacheContentType Type) const
{
return Type == ResourceCacheContentType::SRB ? SRBOffsetFromTableStart : SigOffsetFromTableStart;
}
D3D12_ROOT_PARAMETER_TYPE GetD3D12RootParamType() const { return static_cast<D3D12_ROOT_PARAMETER_TYPE>(RootParamType); }
bool IsRootView() const
{
return (GetD3D12RootParamType() == D3D12_ROOT_PARAMETER_TYPE_CBV ||
GetD3D12RootParamType() == D3D12_ROOT_PARAMETER_TYPE_SRV ||
GetD3D12RootParamType() == D3D12_ROOT_PARAMETER_TYPE_UAV);
}
bool IsCompatibleWith(const PipelineResourceAttribsD3D12& rhs) const
{
// Ignore sampler index, signature root index & offset.
// clang-format off
return Register == rhs.Register &&
Space == rhs.Space &&
SRBRootIndex == rhs.SRBRootIndex &&
SRBOffsetFromTableStart == rhs.SRBOffsetFromTableStart &&
ImtblSamplerAssigned == rhs.ImtblSamplerAssigned &&
RootParamType == rhs.RootParamType;
// clang-format on
}
size_t GetHash() const
{
return ComputeHash(Register, Space, SRBRootIndex, SRBOffsetFromTableStart, ImtblSamplerAssigned, RootParamType);
}
};
} // namespace Diligent
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