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78 lines
3.1 KiB
C++
78 lines
3.1 KiB
C++
/*
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* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
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* its licensors.
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*
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* For complete copyright and license terms please see the LICENSE at the root of this
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* distribution (the "License"). All use of this software is governed by the License,
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* or, if provided, by the license below or the license accompanying this file. Do not
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* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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*
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*/
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// Original file Copyright Crytek GMBH or its affiliates, used under license.
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// Description : Decodes geom cache data
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#ifndef CRYINCLUDE_CRY3DENGINE_GEOMCACHEDECODER_H
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#define CRYINCLUDE_CRY3DENGINE_GEOMCACHEDECODER_H
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#pragma once
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#if defined(USE_GEOM_CACHES)
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#include "GeomCacheFileFormat.h"
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class CGeomCache;
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struct SGeomCacheRenderMeshUpdateContext;
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struct SGeomCacheStaticMeshData;
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struct SGeomCacheFrameHeader
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{
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enum EFrameHeaderState
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{
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eFHS_Uninitialized = 0,
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eFHS_Undecoded = 1,
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eFHS_Decoded = 2
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};
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EFrameHeaderState m_state;
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uint32 m_offset;
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};
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namespace GeomCacheDecoder
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{
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// Decodes an index frame
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void DecodeIFrame(const CGeomCache* pGeomCache, char* pData);
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// Decodes a bi-directional predicted frame
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void DecodeBFrame(const CGeomCache * pGeomCache, char* pData, char* pPrevFramesData[2],
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char* pFloorIndexFrameData, char* pCeilIndexFrameData);
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bool PrepareFillMeshData(SGeomCacheRenderMeshUpdateContext& updateContext, const SGeomCacheStaticMeshData& staticMeshData,
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const char*& pFloorFrameMeshData, const char*& pCeilFrameMeshData, size_t& offsetToNextMesh, float& lerpFactor);
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void FillMeshDataFromDecodedFrame(const bool bMotionBlur, SGeomCacheRenderMeshUpdateContext& updateContext,
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const SGeomCacheStaticMeshData& staticMeshData, const char* pFloorFrameMeshData,
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const char* pCeilFrameMeshData, float lerpFactor);
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// Gets total needed space for uncompressing successive blocks
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uint32 GetDecompressBufferSize(const char* const pStartBlock, const uint numFrames);
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// Decompresses one block of compressed data with header for input
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bool DecompressBlock(const GeomCacheFile::EBlockCompressionFormat compressionFormat, char* const pDest, const char* const pSource);
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// Decompresses blocks of compressed data with headers for input and output
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bool DecompressBlocks(const GeomCacheFile::EBlockCompressionFormat compressionFormat, char* const pDest,
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const char* const pSource, const uint blockOffset, const uint numBlocks, const uint numHandleFrames);
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Vec3 DecodePosition(const Vec3& aabbMin, const Vec3& aabbSize, const GeomCacheFile::Position& inPosition, const Vec3& convertFactor);
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Vec2 DecodeTexcoord(const GeomCacheFile::Texcoords& inTexcoords, float uvMax);
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Quat DecodeQTangent(const GeomCacheFile::QTangent& inQTangent);
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void TransformAndConvertToTangentAndBitangent(const Quat& rotation, const Quat& inQTangent, SPipTangents& outTangents);
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void ConvertToTangentAndBitangent(const Quat& inQTangent, SPipTangents& outTangents);
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};
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#endif
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#endif // CRYINCLUDE_CRY3DENGINE_GEOMCACHEDECODER_H
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