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89 lines
3.4 KiB
C++
89 lines
3.4 KiB
C++
/*
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* Copyright (c) Contributors to the Open 3D Engine Project.
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* For complete copyright and license terms please see the LICENSE at the root of this distribution.
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*
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* SPDX-License-Identifier: Apache-2.0 OR MIT
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*
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*/
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#include <Atom/RPI.Public/Image/DefaultStreamingImageController.h>
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#include <Atom/RPI.Public/Image/StreamingImage.h>
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#include <AtomCore/Instance/InstanceDatabase.h>
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#include <AzCore/Serialization/SerializeContext.h>
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namespace AZ
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{
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namespace RPI
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{
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Data::Instance<DefaultStreamingImageController> DefaultStreamingImageController::FindOrCreate(const Data::Asset<DefaultStreamingImageControllerAsset>& asset)
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{
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return azrtti_cast<DefaultStreamingImageController*>(
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Data::InstanceDatabase<StreamingImageController>::Instance().FindOrCreate(
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Data::InstanceId::CreateFromAssetId(asset.GetId()),
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asset));
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}
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AZ::Data::Instance<DefaultStreamingImageController> DefaultStreamingImageController::CreateInternal(Data::AssetData* assetData)
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{
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DefaultStreamingImageControllerAsset* specificAsset = azrtti_cast<DefaultStreamingImageControllerAsset*>(assetData);
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if (!specificAsset)
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{
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AZ_Error("DefaultStreamingImageController", false, "DefaultStreamingImageController instance requires a DefaultStreamingImageControllerAsset.");
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return nullptr;
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}
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Data::Instance<DefaultStreamingImageController> instance = aznew DefaultStreamingImageController();
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const RHI::ResultCode resultCode = instance->Init(*specificAsset);
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if (resultCode == RHI::ResultCode::Success)
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{
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return instance;
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}
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return nullptr;
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}
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RHI::ResultCode DefaultStreamingImageController::Init([[maybe_unused]] DefaultStreamingImageControllerAsset& imageControllerAsset)
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{
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return RHI::ResultCode::Success;
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}
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StreamingImageContextPtr DefaultStreamingImageController::CreateContextInternal()
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{
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StreamingImageContextPtr context = aznew StreamingImageContext();
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m_recentlyAttachedContexts.emplace_back(context);
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return context;
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}
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void DefaultStreamingImageController::UpdateInternal(size_t timestamp, const StreamingImageContextList& contexts)
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{
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AZ_UNUSED(timestamp);
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AZ_UNUSED(contexts);
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const uint32_t maxExpandsCount = 20;
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uint32_t mipsExpandsPerUpdate = 0;
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// [GFX TODO] [ATOM-551] Streaming image control of DefaultStreamingImageController
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// For now we always stream in all the mips. Of course we need to make this smarter at some point.
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if (!m_recentlyAttachedContexts.empty())
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{
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for (auto& context : m_recentlyAttachedContexts)
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{
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if (StreamingImage* image = context->TryGetImage())
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{
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QueueExpandToMipChainLevel(image, 0);
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mipsExpandsPerUpdate++;
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if (mipsExpandsPerUpdate >= maxExpandsCount)
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{
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break;
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}
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}
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}
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m_recentlyAttachedContexts.erase(m_recentlyAttachedContexts.begin(), m_recentlyAttachedContexts.begin() + mipsExpandsPerUpdate);
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}
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}
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}
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}
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