100 lines
3.5 KiB
C
100 lines
3.5 KiB
C
|
// 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) 2008-2023 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 PX_FPU_H
|
||
|
|
#define PX_FPU_H
|
||
|
|
|
||
|
|
#include "foundation/PxIntrinsics.h"
|
||
|
|
#include "foundation/PxAssert.h"
|
||
|
|
#include "foundation/PxFoundationConfig.h"
|
||
|
|
|
||
|
|
#define PX_IR(x) ((PxU32&)(x)) // integer representation of a floating-point value.
|
||
|
|
#define PX_SIR(x) ((PxI32&)(x)) // signed integer representation of a floating-point value.
|
||
|
|
#define PX_FR(x) ((PxReal&)(x)) // floating-point representation of a integer value.
|
||
|
|
|
||
|
|
#define PX_FPU_GUARD PxFPUGuard scopedFpGuard;
|
||
|
|
#define PX_SIMD_GUARD PxSIMDGuard scopedFpGuard;
|
||
|
|
#define PX_SIMD_GUARD_CNDT(x) PxSIMDGuard scopedFpGuard(x);
|
||
|
|
|
||
|
|
#if !PX_DOXYGEN
|
||
|
|
namespace physx
|
||
|
|
{
|
||
|
|
#endif
|
||
|
|
// sets the default SDK state for scalar and SIMD units
|
||
|
|
class PX_FOUNDATION_API PxFPUGuard
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
PxFPUGuard(); // set fpu control word for PhysX
|
||
|
|
~PxFPUGuard(); // restore fpu control word
|
||
|
|
private:
|
||
|
|
PxU32 mControlWords[8];
|
||
|
|
};
|
||
|
|
|
||
|
|
// sets default SDK state for simd unit only, lighter weight than FPUGuard
|
||
|
|
class PxSIMDGuard
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
PX_INLINE PxSIMDGuard(bool enable = true); // set simd control word for PhysX
|
||
|
|
PX_INLINE ~PxSIMDGuard(); // restore simd control word
|
||
|
|
private:
|
||
|
|
#if !(PX_LINUX || PX_OSX) || (!PX_EMSCRIPTEN && PX_INTEL_FAMILY)
|
||
|
|
PxU32 mControlWord;
|
||
|
|
bool mEnabled;
|
||
|
|
#endif
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
\brief Enables floating point exceptions for the scalar and SIMD unit
|
||
|
|
*/
|
||
|
|
PX_FOUNDATION_API void PxEnableFPExceptions();
|
||
|
|
|
||
|
|
/**
|
||
|
|
\brief Disables floating point exceptions for the scalar and SIMD unit
|
||
|
|
*/
|
||
|
|
PX_FOUNDATION_API void PxDisableFPExceptions();
|
||
|
|
|
||
|
|
#if !PX_DOXYGEN
|
||
|
|
} // namespace physx
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if PX_WINDOWS_FAMILY
|
||
|
|
#include "foundation/windows/PxWindowsFPU.h"
|
||
|
|
#elif (PX_LINUX && PX_SSE2) || PX_OSX
|
||
|
|
#include "foundation/unix/PxUnixFPU.h"
|
||
|
|
#else
|
||
|
|
PX_INLINE physx::PxSIMDGuard::PxSIMDGuard(bool)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
PX_INLINE physx::PxSIMDGuard::~PxSIMDGuard()
|
||
|
|
{
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|