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- //
- // Redistribution and use in source and binary forms, with or without
- // modification, are permitted provided that the following conditions
- // are met:
- // * Redistributions of source code must retain the above copyright
- // notice, this list of conditions and the following disclaimer.
- // * Redistributions in binary form must reproduce the above copyright
- // notice, this list of conditions and the following disclaimer in the
- // documentation and/or other materials provided with the distribution.
- // * Neither the name of NVIDIA CORPORATION nor the names of its
- // contributors may be used to endorse or promote products derived
- // from this software without specific prior written permission.
- //
- // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
- // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- // PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- // CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- // EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- // OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- //
- // Copyright (c) 2008-2021 NVIDIA Corporation. All rights reserved.
- // Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
- // Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
-
- #ifndef GU_SERIALIZE_H
- #define GU_SERIALIZE_H
-
- #include "foundation/PxSimpleTypes.h"
- #include "foundation/PxIO.h"
- #include "common/PxPhysXCommonConfig.h"
- #include "CmPhysXCommon.h"
- #include "PsUtilities.h"
-
- namespace physx
- {
- PX_INLINE void flip(PxU16& v)
- {
- PxU8* b = reinterpret_cast<PxU8*>(&v);
- PxU8 temp = b[0];
- b[0] = b[1];
- b[1] = temp;
- }
-
- PX_INLINE void flip(PxI16& v)
- {
- PxI8* b = reinterpret_cast<PxI8*>(&v);
- PxI8 temp = b[0];
- b[0] = b[1];
- b[1] = temp;
- }
-
- PX_INLINE void flip(PxU32& v)
- {
- PxU8* b = reinterpret_cast<PxU8*>(&v);
-
- PxU8 temp = b[0];
- b[0] = b[3];
- b[3] = temp;
- temp = b[1];
- b[1] = b[2];
- b[2] = temp;
- }
-
- // MS: It is important to modify the value directly and not use a temporary variable or a return
- // value. The reason for this is that a flipped float might have a bit pattern which indicates
- // an invalid float. If such a float is assigned to another float, the bit pattern
- // can change again (maybe to map invalid floats to a common invalid pattern?).
- // When reading the float and flipping again, the changed bit pattern will result in a different
- // float than the original one.
- PX_INLINE void flip(PxF32& v)
- {
- PxU8* b = reinterpret_cast<PxU8*>(&v);
-
- PxU8 temp = b[0];
- b[0] = b[3];
- b[3] = temp;
- temp = b[1];
- b[1] = b[2];
- b[2] = temp;
- }
-
- PX_INLINE void writeChunk(PxI8 a, PxI8 b, PxI8 c, PxI8 d, PxOutputStream& stream)
- {
- stream.write(&a, sizeof(PxI8));
- stream.write(&b, sizeof(PxI8));
- stream.write(&c, sizeof(PxI8));
- stream.write(&d, sizeof(PxI8));
- }
-
- void readChunk(PxI8& a, PxI8& b, PxI8& c, PxI8& d, PxInputStream& stream);
-
- PxU16 readWord(bool mismatch, PxInputStream& stream);
- PX_PHYSX_COMMON_API PxU32 readDword(bool mismatch, PxInputStream& stream);
- PxF32 readFloat(bool mismatch, PxInputStream& stream);
-
- PX_PHYSX_COMMON_API void writeWord(PxU16 value, bool mismatch, PxOutputStream& stream);
- PX_PHYSX_COMMON_API void writeDword(PxU32 value, bool mismatch, PxOutputStream& stream);
- PX_PHYSX_COMMON_API void writeFloat(PxF32 value, bool mismatch, PxOutputStream& stream);
-
- bool readFloatBuffer(PxF32* dest, PxU32 nbFloats, bool mismatch, PxInputStream& stream);
- PX_PHYSX_COMMON_API void writeFloatBuffer(const PxF32* src, PxU32 nb, bool mismatch, PxOutputStream& stream);
- PX_PHYSX_COMMON_API void writeWordBuffer(const PxU16* src, PxU32 nb, bool mismatch, PxOutputStream& stream);
- void readWordBuffer(PxU16* dest, PxU32 nb, bool mismatch, PxInputStream& stream);
-
- PX_PHYSX_COMMON_API bool writeHeader(PxI8 a, PxI8 b, PxI8 c, PxI8 d, PxU32 version, bool mismatch, PxOutputStream& stream);
- bool readHeader(PxI8 a, PxI8 b, PxI8 c, PxI8 d, PxU32& version, bool& mismatch, PxInputStream& stream);
-
- PX_INLINE bool readIntBuffer(PxU32* dest, PxU32 nbInts, bool mismatch, PxInputStream& stream)
- {
- return readFloatBuffer(reinterpret_cast<PxF32*>(dest), nbInts, mismatch, stream);
- }
-
- PX_INLINE void writeIntBuffer(const PxU32* src, PxU32 nb, bool mismatch, PxOutputStream& stream)
- {
- writeFloatBuffer(reinterpret_cast<const PxF32*>(src), nb, mismatch, stream);
- }
-
- PX_INLINE bool ReadDwordBuffer(PxU32* dest, PxU32 nb, bool mismatch, PxInputStream& stream)
- {
- return readFloatBuffer(reinterpret_cast<float*>(dest), nb, mismatch, stream);
- }
-
- PX_INLINE void WriteDwordBuffer(const PxU32* src, PxU32 nb, bool mismatch, PxOutputStream& stream)
- {
- writeFloatBuffer(reinterpret_cast<const float*>(src), nb, mismatch, stream);
- }
-
- PX_PHYSX_COMMON_API PxU32 computeMaxIndex(const PxU32* indices, PxU32 nbIndices);
- PX_PHYSX_COMMON_API PxU16 computeMaxIndex(const PxU16* indices, PxU32 nbIndices);
- PX_PHYSX_COMMON_API void storeIndices(PxU32 maxIndex, PxU32 nbIndices, const PxU32* indices, PxOutputStream& stream, bool platformMismatch);
- PX_PHYSX_COMMON_API void readIndices(PxU32 maxIndex, PxU32 nbIndices, PxU32* indices, PxInputStream& stream, bool platformMismatch);
-
- // PT: see PX-1163
- PX_FORCE_INLINE bool readBigEndianVersionNumber(PxInputStream& stream, bool mismatch_, PxU32& fileVersion, bool& mismatch)
- {
- // PT: allright this is going to be subtle:
- // - in version 1 the data was always saved in big-endian format
- // - *including the version number*!
- // - so we cannot just read the version "as usual" using the passed mismatch param
-
- // PT: mismatch value for version 1
- mismatch = (shdfnd::littleEndian() == 1);
-
- const PxU32 rawFileVersion = readDword(false, stream);
- if(rawFileVersion==1)
- {
- // PT: this is a version-1 file with no flip
- fileVersion = 1;
- PX_ASSERT(!mismatch);
- }
- else
- {
- PxU32 fileVersionFlipped = rawFileVersion;
- flip(fileVersionFlipped);
- if(fileVersionFlipped==1)
- {
- // PT: this is a version-1 file with flip
- fileVersion = 1;
- PX_ASSERT(mismatch);
- }
- else
- {
- // PT: this is at least version 2 so we can process it "as usual"
- mismatch = mismatch_;
- fileVersion = mismatch_ ? fileVersionFlipped : rawFileVersion;
- }
- }
-
- PX_ASSERT(fileVersion<=3);
- if(fileVersion>3)
- return false;
- return true;
- }
-
- // PT: TODO: copied from IceSerialize.h, still needs to be refactored/cleaned up.
- namespace Gu
- {
- PX_PHYSX_COMMON_API bool WriteHeader(PxU8 a, PxU8 b, PxU8 c, PxU8 d, PxU32 version, bool mismatch, PxOutputStream& stream);
- PX_PHYSX_COMMON_API bool ReadHeader(PxU8 a_, PxU8 b_, PxU8 c_, PxU8 d_, PxU32& version, bool& mismatch, PxInputStream& stream);
-
- PX_PHYSX_COMMON_API void StoreIndices(PxU32 maxIndex, PxU32 nbIndices, const PxU32* indices, PxOutputStream& stream, bool platformMismatch);
- void ReadIndices(PxU32 maxIndex, PxU32 nbIndices, PxU32* indices, PxInputStream& stream, bool platformMismatch);
-
- PX_PHYSX_COMMON_API void StoreIndices(PxU16 maxIndex, PxU32 nbIndices, const PxU16* indices, PxOutputStream& stream, bool platformMismatch);
- void ReadIndices(PxU16 maxIndex, PxU32 nbIndices, PxU16* indices, PxInputStream& stream, bool platformMismatch);
- }
-
-
- }
-
- #endif