NvCloth library v1.0.0

1 files changed, 92 insertions, 0 deletions

diff --git a/NvCloth/src/scalar/SwCollisionHelpers.h b/NvCloth/src/scalar/SwCollisionHelpers.h
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+// This code contains NVIDIA Confidential Information and is disclosed to you
+// under a form of NVIDIA software license agreement provided separately to you.
+//
+// Notice
+// NVIDIA Corporation and its licensors retain all intellectual property and
+// proprietary rights in and to this software and related documentation and
+// any modifications thereto. Any use, reproduction, disclosure, or
+// distribution of this software and related documentation without an express
+// license agreement from NVIDIA Corporation is strictly prohibited.
+//
+// ALL NVIDIA DESIGN SPECIFICATIONS, CODE ARE PROVIDED "AS IS.". NVIDIA MAKES
+// NO WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO
+// THE MATERIALS, AND EXPRESSLY DISCLAIMS ALL IMPLIED WARRANTIES OF NONINFRINGEMENT,
+// MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE.
+//
+// Information and code furnished is believed to be accurate and reliable.
+// However, NVIDIA Corporation assumes no responsibility for the consequences of use of such
+// information or for any infringement of patents or other rights of third parties that may
+// result from its use. No license is granted by implication or otherwise under any patent
+// or patent rights of NVIDIA Corporation. Details are subject to change without notice.
+// This code supersedes and replaces all information previously supplied.
+// NVIDIA Corporation products are not authorized for use as critical
+// components in life support devices or systems without express written approval of
+// NVIDIA Corporation.
+//
+// Copyright (c) 2008-2017 NVIDIA Corporation. All rights reserved.
+// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
+// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
+
+#pragma once
+
+namespace physx
+{
+namespace cloth
+{
+
+#if !NV_SIMD_SIMD
+uint32_t findBitSet(uint32_t mask)
+{
+	uint32_t result = 0;
+	while (mask >>= 1)
+		++result;
+	return result;
+}
+#endif
+
+inline Scalar4i intFloor(const Scalar4f& v)
+{
+	return Scalar4i(int(floor(v.f4[0])), int(floor(v.f4[1])), int(floor(v.f4[2])), int(floor(v.f4[3])));
+}
+
+inline Scalar4i horizontalOr(const Scalar4i& mask)
+{
+	return simd4i(mask.i4[0] | mask.i4[1] | mask.i4[2] | mask.i4[3]);
+}
+
+template <>
+struct Gather<Scalar4i>
+{
+	inline Gather(const Scalar4i& index);
+	inline Scalar4i operator()(const Scalar4i*) const;
+
+	Scalar4i mIndex;
+	Scalar4i mOutOfRange;
+};
+
+Gather<Scalar4i>::Gather(const Scalar4i& index)
+{
+	uint32_t mask = /* sGridSize */ 8 - 1;
+
+	mIndex.u4[0] = index.u4[0] & mask;
+	mIndex.u4[1] = index.u4[1] & mask;
+	mIndex.u4[2] = index.u4[2] & mask;
+	mIndex.u4[3] = index.u4[3] & mask;
+
+	mOutOfRange.i4[0] = index.u4[0] & ~mask ? 0 : -1;
+	mOutOfRange.i4[1] = index.u4[1] & ~mask ? 0 : -1;
+	mOutOfRange.i4[2] = index.u4[2] & ~mask ? 0 : -1;
+	mOutOfRange.i4[3] = index.u4[3] & ~mask ? 0 : -1;
+}
+
+Scalar4i Gather<Scalar4i>::operator()(const Scalar4i* ptr) const
+{
+	const int32_t* base = ptr->i4;
+	const int32_t* index = mIndex.i4;
+	const int32_t* mask = mOutOfRange.i4;
+	return Scalar4i(base[index[0]] & mask[0], base[index[1]] & mask[1], base[index[2]] & mask[2],
+	                base[index[3]] & mask[3]);
+}
+
+} // namespace cloth
+} // namespace physx