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354 lines
13 KiB
C++
354 lines
13 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.Reflect/Image/StreamingImageAsset.h>
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#include <AzCore/Asset/AssetSerializer.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 Internal
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{
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template <AZ::RHI::Format>
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float RetrieveFloatValue(const AZ::u8* mem, size_t index)
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{
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static_assert(false, "Unsupported pixel format");
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}
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template <AZ::RHI::Format>
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AZ::u32 RetrieveUintValue(const AZ::u8* mem, size_t index)
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{
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static_assert(false, "Unsupported pixel format");
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}
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template <AZ::RHI::Format>
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AZ::s32 RetrieveIntValue(const AZ::u8* mem, size_t index)
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{
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static_assert(false, "Unsupported pixel format");
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}
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template <>
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float RetrieveFloatValue<AZ::RHI::Format::Unknown>([[maybe_unused]] const AZ::u8* mem, [[maybe_unused]] size_t index)
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{
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return 0.0f;
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}
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template <>
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AZ::u32 RetrieveUintValue<AZ::RHI::Format::Unknown>([[maybe_unused]] const AZ::u8* mem, [[maybe_unused]] size_t index)
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{
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return 0;
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}
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template <>
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AZ::s32 RetrieveIntValue<AZ::RHI::Format::Unknown>([[maybe_unused]] const AZ::u8* mem, [[maybe_unused]] size_t index)
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{
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return 0;
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}
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float RetrieveFloatValue(const AZ::u8* mem, size_t index, AZ::RHI::Format format)
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{
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switch (format)
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{
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case AZ::RHI::Format::R8_UNORM:
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case AZ::RHI::Format::R8_SNORM:
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case AZ::RHI::Format::A8_UNORM:
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{
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return mem[index] / static_cast<float>(std::numeric_limits<AZ::u8>::max());
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}
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case AZ::RHI::Format::R16_FLOAT:
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case AZ::RHI::Format::D16_UNORM:
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case AZ::RHI::Format::R16_UNORM:
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case AZ::RHI::Format::R16_SNORM:
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{
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return mem[index] / static_cast<float>(std::numeric_limits<AZ::u16>::max());
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}
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case AZ::RHI::Format::D32_FLOAT:
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case AZ::RHI::Format::R32_FLOAT:
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{
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auto actualMem = reinterpret_cast<const float*>(mem);
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return actualMem[index];
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}
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default:
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return RetrieveFloatValue<AZ::RHI::Format::Unknown>(mem, index);
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}
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}
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AZ::u32 RetrieveUintValue(const AZ::u8* mem, size_t index, AZ::RHI::Format format)
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{
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switch (format)
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{
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case AZ::RHI::Format::R8_UINT:
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{
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return mem[index] / static_cast<AZ::u32>(std::numeric_limits<AZ::u8>::max());
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}
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case AZ::RHI::Format::R16_UINT:
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{
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auto actualMem = reinterpret_cast<const AZ::u16*>(mem);
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return actualMem[index] / static_cast<AZ::u32>(std::numeric_limits<AZ::u16>::max());
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}
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case AZ::RHI::Format::R32_UINT:
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{
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auto actualMem = reinterpret_cast<const AZ::u32*>(mem);
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return actualMem[index];
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}
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default:
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return RetrieveUintValue<AZ::RHI::Format::Unknown>(mem, index);
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}
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}
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AZ::s32 RetrieveIntValue(const AZ::u8* mem, size_t index, AZ::RHI::Format format)
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{
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switch (format)
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{
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case AZ::RHI::Format::R8_SINT:
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{
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return mem[index] / static_cast<AZ::s32>(std::numeric_limits<AZ::s8>::max());
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}
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case AZ::RHI::Format::R16_SINT:
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{
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auto actualMem = reinterpret_cast<const AZ::s16*>(mem);
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return actualMem[index] / static_cast<AZ::s32>(std::numeric_limits<AZ::s16>::max());
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}
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case AZ::RHI::Format::R32_SINT:
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{
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auto actualMem = reinterpret_cast<const AZ::s32*>(mem);
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return actualMem[index];
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}
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default:
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return RetrieveIntValue<AZ::RHI::Format::Unknown>(mem, index);
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}
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}
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}
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namespace RPI
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{
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const char* StreamingImageAsset::DisplayName = "StreamingImage";
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const char* StreamingImageAsset::Group = "Image";
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const char* StreamingImageAsset::Extension = "streamingimage";
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void StreamingImageAsset::Reflect(ReflectContext* context)
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{
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if (auto* serializeContext = azrtti_cast<SerializeContext*>(context))
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{
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serializeContext->Class<MipChain>()
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->Field("m_mipOffset", &MipChain::m_mipOffset)
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->Field("m_mipCount", &MipChain::m_mipCount)
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->Field("m_asset", &MipChain::m_asset)
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;
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serializeContext->Class<StreamingImageAsset, ImageAsset>()
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->Version(1)
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->Field("m_mipLevelToChainIndex", &StreamingImageAsset::m_mipLevelToChainIndex)
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->Field("m_mipChains", &StreamingImageAsset::m_mipChains)
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->Field("m_flags", &StreamingImageAsset::m_flags)
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->Field("m_tailMipChain", &StreamingImageAsset::m_tailMipChain)
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->Field("m_totalImageDataSize", &StreamingImageAsset::m_totalImageDataSize)
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;
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}
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}
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const Data::Asset<ImageMipChainAsset>& StreamingImageAsset::GetMipChainAsset(size_t mipChainIndex) const
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{
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return m_mipChains[mipChainIndex].m_asset;
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}
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void StreamingImageAsset::ReleaseMipChainAssets()
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{
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// Release loaded mipChain asset
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for (uint32_t mipChainIndex = 0; mipChainIndex < m_mipChains.size() - 1; mipChainIndex++)
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{
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m_mipChains[mipChainIndex].m_asset.Release();
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}
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}
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const ImageMipChainAsset& StreamingImageAsset::GetTailMipChain() const
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{
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return m_tailMipChain;
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}
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size_t StreamingImageAsset::GetMipChainCount() const
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{
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return m_mipChains.size();
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}
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size_t StreamingImageAsset::GetMipChainIndex(size_t mipLevel) const
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{
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return m_mipLevelToChainIndex[mipLevel];
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}
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size_t StreamingImageAsset::GetMipLevel(size_t mipChainIndex) const
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{
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return m_mipChains[mipChainIndex].m_mipOffset;
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}
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size_t StreamingImageAsset::GetMipCount(size_t mipChainIndex) const
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{
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return m_mipChains[mipChainIndex].m_mipCount;
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}
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const Data::AssetId& StreamingImageAsset::GetPoolAssetId() const
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{
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return m_poolAssetId;
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}
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StreamingImageFlags StreamingImageAsset::GetFlags() const
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{
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return m_flags;
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}
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size_t StreamingImageAsset::GetTotalImageDataSize() const
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{
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return m_totalImageDataSize;
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}
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AZStd::array_view<uint8_t> StreamingImageAsset::GetSubImageData(uint32_t mip, uint32_t slice)
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{
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if (mip >= m_mipLevelToChainIndex.size())
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{
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return AZStd::array_view<uint8_t>();
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}
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size_t mipChainIndex = m_mipLevelToChainIndex[mip];
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MipChain& mipChain = m_mipChains[mipChainIndex];
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ImageMipChainAsset* mipChainAsset = nullptr;
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// Use m_tailMipChain if it's the last mip chain
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if (mipChainIndex == m_mipChains.size() - 1)
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{
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mipChainAsset = &m_tailMipChain;
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}
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else if (mipChain.m_asset.IsReady())
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{
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mipChainAsset = mipChain.m_asset.Get();
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}
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if (mipChainAsset == nullptr)
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{
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AZ_Warning("Streaming Image", false, "MipChain asset wasn't loaded");
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return AZStd::array_view<uint8_t>();
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}
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return mipChainAsset->GetSubImageData(mip - mipChain.m_mipOffset, slice);
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}
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template<typename T>
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T StreamingImageAsset::GetSubImagePixelValueInternal(uint32_t x, uint32_t y, uint32_t componentIndex, uint32_t mip, uint32_t slice)
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{
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AZStd::vector<T> values;
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auto position = AZStd::make_pair(x, y);
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GetSubImagePixelValues(position, position, values, componentIndex, mip, slice);
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if (values.size() == 1)
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{
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return values[0];
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}
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return aznumeric_cast<T>(0);
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}
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template<>
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float StreamingImageAsset::GetSubImagePixelValue<float>(uint32_t x, uint32_t y, uint32_t componentIndex, uint32_t mip, uint32_t slice)
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{
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return GetSubImagePixelValueInternal<float>(x, y, componentIndex, mip, slice);
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}
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template<>
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AZ::u32 StreamingImageAsset::GetSubImagePixelValue<AZ::u32>(uint32_t x, uint32_t y, uint32_t componentIndex, uint32_t mip, uint32_t slice)
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{
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return GetSubImagePixelValueInternal<AZ::u32>(x, y, componentIndex, mip, slice);
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}
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template<>
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AZ::s32 StreamingImageAsset::GetSubImagePixelValue<AZ::s32>(uint32_t x, uint32_t y, uint32_t componentIndex, uint32_t mip, uint32_t slice)
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{
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return GetSubImagePixelValueInternal<AZ::s32>(x, y, componentIndex, mip, slice);
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}
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void StreamingImageAsset::GetSubImagePixelValues(AZStd::pair<uint32_t, uint32_t> topLeft, AZStd::pair<uint32_t, uint32_t> bottomRight, AZStd::array_view<float> outValues, uint32_t componentIndex, uint32_t mip, uint32_t slice)
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{
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// TODO: Use the component index
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(void)componentIndex;
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auto imageData = GetSubImageData(mip, slice);
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if (!imageData.empty())
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{
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const AZ::RHI::ImageDescriptor imageDescriptor = GetImageDescriptor();
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auto width = imageDescriptor.m_size.m_width;
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size_t outValuesIndex = 0;
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for (uint32_t y = topLeft.second; y <= bottomRight.second; ++y)
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{
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for (uint32_t x = topLeft.first; x <= bottomRight.first; ++x)
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{
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size_t imageDataIndex = (y * width) + x;
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auto& outValue = const_cast<float&>(outValues[outValuesIndex++]);
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outValue = Internal::RetrieveFloatValue(imageData.data(), imageDataIndex, imageDescriptor.m_format);
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}
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}
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}
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}
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void StreamingImageAsset::GetSubImagePixelValues(AZStd::pair<uint32_t, uint32_t> topLeft, AZStd::pair<uint32_t, uint32_t> bottomRight, AZStd::array_view<AZ::u32> outValues, uint32_t componentIndex, uint32_t mip, uint32_t slice)
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{
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// TODO: Use the component index
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(void)componentIndex;
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auto imageData = GetSubImageData(mip, slice);
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if (!imageData.empty())
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{
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const AZ::RHI::ImageDescriptor imageDescriptor = GetImageDescriptor();
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auto width = imageDescriptor.m_size.m_width;
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size_t outValuesIndex = 0;
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for (uint32_t y = topLeft.second; y <= bottomRight.second; ++y)
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{
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for (uint32_t x = topLeft.first; x <= bottomRight.first; ++x)
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{
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size_t imageDataIndex = (y * width) + x;
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auto& outValue = const_cast<AZ::u32&>(outValues[outValuesIndex++]);
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outValue = Internal::RetrieveUintValue(imageData.data(), imageDataIndex, imageDescriptor.m_format);
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}
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}
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}
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}
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void StreamingImageAsset::GetSubImagePixelValues(AZStd::pair<uint32_t, uint32_t> topLeft, AZStd::pair<uint32_t, uint32_t> bottomRight, AZStd::array_view<AZ::s32> outValues, uint32_t componentIndex, uint32_t mip, uint32_t slice)
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{
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// TODO: Use the component index
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(void)componentIndex;
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auto imageData = GetSubImageData(mip, slice);
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if (!imageData.empty())
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{
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const AZ::RHI::ImageDescriptor imageDescriptor = GetImageDescriptor();
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auto width = imageDescriptor.m_size.m_width;
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size_t outValuesIndex = 0;
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for (uint32_t y = topLeft.second; y <= bottomRight.second; ++y)
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{
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for (uint32_t x = topLeft.first; x <= bottomRight.first; ++x)
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{
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size_t imageDataIndex = (y * width) + x;
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auto& outValue = const_cast<AZ::s32&>(outValues[outValuesIndex++]);
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outValue = Internal::RetrieveIntValue(imageData.data(), imageDataIndex, imageDescriptor.m_format);
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}
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}
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}
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}
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}
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}
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