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// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
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#pragma once

#include "Simd.h"

// platform specific helpers

namespace nv
{
namespace cloth
{

inline uint32_t findBitSet(uint32_t mask);

// intFloor(-1.0f) returns -2 on SSE and NEON!
inline Simd4i intFloor(const Simd4f& v);

inline Simd4i horizontalOr(const Simd4i& mask);

template <typename>
struct Gather;

#if NV_SIMD_SIMD
template <>
struct Gather<Simd4i>
{
	inline Gather(const Simd4i& index);
	inline Simd4i operator()(const Simd4i*) const;

#if NV_SIMD_SSE2
	Simd4i mSelectQ, mSelectD, mSelectW;
	static const Simd4i sIntSignBit;
	static const Simd4i sSignedMask;
#elif NV_SIMD_NEON
	Simd4i mPermute;
	static const Simd4i sPack;
	static const Simd4i sOffset;
	static const Simd4i sShift;
	static const Simd4i sMask;
#endif
	Simd4i mOutOfRange;
};
#endif

} // namespace cloth
} // namespace nv

#if NV_SIMD_SSE2
#include "sse2/SwCollisionHelpers.h"
#elif NV_SIMD_NEON
#include "neon/SwCollisionHelpers.h"
#endif

#if NV_SIMD_SCALAR
#include "scalar/SwCollisionHelpers.h"
#endif