94 lines
3.2 KiB
C++
94 lines
3.2 KiB
C++
//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// * Neither the name of NVIDIA CORPORATION nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// Copyright (c) 2008-2019 NVIDIA Corporation. All rights reserved.
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// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
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// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
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#ifndef PSFOUNDATION_PSFPU_H
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#define PSFOUNDATION_PSFPU_H
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#include "Ps.h"
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#include "PsIntrinsics.h"
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#define PX_IR(x) ((uint32_t&)(x)) // integer representation of a floating-point value.
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#define PX_SIR(x) ((int32_t&)(x)) // signed integer representation of a floating-point value.
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#define PX_FR(x) ((float&)(x)) // floating-point representation of a integer value.
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#define PX_FPU_GUARD shdfnd::FPUGuard scopedFpGuard;
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#define PX_SIMD_GUARD shdfnd::SIMDGuard scopedFpGuard;
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namespace physx
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{
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namespace shdfnd
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{
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// sets the default SDK state for scalar and SIMD units
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class PX_FOUNDATION_API FPUGuard
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{
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public:
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FPUGuard(); // set fpu control word for PhysX
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~FPUGuard(); // restore fpu control word
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private:
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uint32_t mControlWords[8];
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};
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// sets default SDK state for simd unit only, lighter weight than FPUGuard
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class SIMDGuard
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{
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public:
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PX_INLINE SIMDGuard(); // set simd control word for PhysX
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PX_INLINE ~SIMDGuard(); // restore simd control word
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private:
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uint32_t mControlWord;
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};
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/**
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\brief Enables floating point exceptions for the scalar and SIMD unit
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*/
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PX_FOUNDATION_API void enableFPExceptions();
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/**
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\brief Disables floating point exceptions for the scalar and SIMD unit
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*/
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PX_FOUNDATION_API void disableFPExceptions();
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} // namespace shdfnd
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} // namespace physx
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#if PX_WINDOWS_FAMILY || PX_XBOXONE
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#include "windows/PsWindowsFPU.h"
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#elif (PX_LINUX && PX_SSE2) || PX_PS4 || PX_OSX
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#include "unix/PsUnixFPU.h"
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#else
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PX_INLINE physx::shdfnd::SIMDGuard::SIMDGuard()
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{
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}
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PX_INLINE physx::shdfnd::SIMDGuard::~SIMDGuard()
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{
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}
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#endif
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#endif // #ifndef PSFOUNDATION_PSFPU_H
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