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physx/source/physxextensions/src/serialization/Binary/SnConvX_Align.cpp

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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.
+
+#include "SnConvX.h"
+#include "SnConvX_Align.h"
+#include <assert.h>
+using namespace physx;
+
+void Sn::ConvX::alignTarget(int alignment)
+{
+	const int outputSize = getCurrentOutputSize();
+	const PxU32 outPadding = getPadding(size_t(outputSize), PxU32(alignment));
+	if(outPadding)
+	{
+		assert(outPadding<CONVX_ZERO_BUFFER_SIZE);
+		output(mZeros, int(outPadding));
+	}
+}
+
+const char* Sn::ConvX::alignStream(const char* buffer, int alignment)
+{
+	const PxU32 padding = getPadding(size_t(buffer), PxU32(alignment));
+	assert(!getPadding(size_t(buffer + padding), PxU32(alignment)));
+
+	const int outputSize = getCurrentOutputSize();
+	const PxU32 outPadding = getPadding(size_t(outputSize), PxU32(alignment));
+	if(outPadding==padding)
+	{
+		assert(outPadding<CONVX_ZERO_BUFFER_SIZE);
+		output(mZeros, int(outPadding));
+	}
+	else if(outPadding)
+	{
+		assert(outPadding<CONVX_ZERO_BUFFER_SIZE);
+		output(mZeros, int(outPadding));
+	}
+
+	return buffer + padding;
+}