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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
#include <mutex>
#include <vector>
#include <unordered_map>
#include <atomic>
#include "../../../DiligentCore/Graphics/GraphicsEngine/interface/RenderDevice.h"
#include "../../../DiligentCore/Graphics/GraphicsEngine/interface/DeviceContext.h"
#include "../../../DiligentCore/Common/interface/RefCntAutoPtr.hpp"
#include "../../../DiligentCore/Common/interface/ObjectBase.hpp"
#include "../../../DiligentCore/Graphics/GraphicsTools/interface/BufferSuballocator.h"
#include "../../../DiligentCore/Graphics/GraphicsTools/interface/DynamicTextureAtlas.h"
namespace Diligent
{
namespace GLTF
{
/// GLTF resource manager
class ResourceManager final : public ObjectBase<IObject>
{
public:
using TBase = ObjectBase<IObject>;
struct CreateInfo
{
const BufferSuballocatorCreateInfo* BuffSuballocators = nullptr; // [NumBuffSuballocators]
const DynamicTextureAtlasCreateInfo* TexAtlases = nullptr; // [NumTexAtlases]
Uint32 NumBuffSuballocators = 0;
Uint32 NumTexAtlases = 0;
DynamicTextureAtlasCreateInfo DefaultAtlasDesc;
};
static RefCntAutoPtr<ResourceManager> Create(IRenderDevice* pDevice,
const CreateInfo& CI);
RefCntAutoPtr<IBufferSuballocation> AllocateBufferSpace(Uint32 BufferIndex,
Uint32 Size,
Uint32 Alignment)
{
RefCntAutoPtr<IBufferSuballocation> pSuballoc;
m_BufferSuballocators[BufferIndex]->Allocate(Size, Alignment, &pSuballoc);
return pSuballoc;
}
RefCntAutoPtr<ITextureAtlasSuballocation> AllocateTextureSpace(TEXTURE_FORMAT Fmt,
Uint32 Width,
Uint32 Height,
const char* CacheId = nullptr,
IObject* pUserData = nullptr);
RefCntAutoPtr<ITextureAtlasSuballocation> FindAllocation(const char* CacheId);
Uint32 GetTextureVersion()
{
Uint32 Version = 0;
std::lock_guard<std::mutex> Lock{m_AtlasesMtx};
for (auto atlas_it : m_Atlases)
Version += atlas_it.second->GetVersion();
return Version;
}
Uint32 GetBufferVersion(Uint32 Index) const
{
return m_BufferSuballocators[Index]->GetVersion();
}
IBuffer* GetBuffer(Uint32 Index, IRenderDevice* pDevice, IDeviceContext* pContext)
{
return m_BufferSuballocators[Index]->GetBuffer(pDevice, pContext);
}
ITexture* GetTexture(TEXTURE_FORMAT Fmt, IRenderDevice* pDevice, IDeviceContext* pContext)
{
decltype(m_Atlases)::iterator cache_it; // NB: can't initialize it without locking the mutex
{
std::lock_guard<std::mutex> Lock{m_AtlasesMtx};
cache_it = m_Atlases.find(Fmt);
if (cache_it == m_Atlases.end())
return nullptr;
}
return cache_it->second->GetTexture(pDevice, pContext);
}
// NB: can't return reference here!
TextureDesc GetAtlasDesc(TEXTURE_FORMAT Fmt)
{
{
std::lock_guard<std::mutex> Lock{m_AtlasesMtx};
auto cache_it = m_Atlases.find(Fmt);
if (cache_it != m_Atlases.end())
return cache_it->second->GetAtlasDesc();
}
// Atlas is not present in the map - use default description
TextureDesc Desc = m_DefaultAtlasDesc.Desc;
Desc.Format = Fmt;
return Desc;
}
private:
template <typename AllocatorType, typename ObjectType>
friend class Diligent::MakeNewRCObj;
ResourceManager(IReferenceCounters* pRefCounters,
IRenderDevice* pDevice,
const CreateInfo& CI);
std::vector<RefCntAutoPtr<IBufferSuballocator>> m_BufferSuballocators;
DynamicTextureAtlasCreateInfo m_DefaultAtlasDesc;
const std::string m_DefaultAtlasName;
using AtlasesHashMapType = std::unordered_map<TEXTURE_FORMAT, RefCntAutoPtr<IDynamicTextureAtlas>, std::hash<Uint32>>;
std::mutex m_AtlasesMtx;
AtlasesHashMapType m_Atlases;
using TexAllocationsHashMapType = std::unordered_map<std::string, RefCntWeakPtr<ITextureAtlasSuballocation>>;
std::mutex m_TexAllocationsMtx;
TexAllocationsHashMapType m_TexAllocations;
};
} // namespace GLTF
} // namespace Diligent
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