1 files changed, 106 insertions, 0 deletions
diff --git a/NvBlast/sdk/common/NvBlastFixedBoolArray.h b/NvBlast/sdk/common/NvBlastFixedBoolArray.h
new file mode 100644
index 0000000..253bed6
--- /dev/null
+++ b/NvBlast/sdk/common/NvBlastFixedBoolArray.h
@@ -0,0 +1,106 @@
+/*
+* Copyright (c) 2016-2017, NVIDIA CORPORATION.  All rights reserved.
+*
+* NVIDIA CORPORATION and its licensors retain all intellectual property
+* and proprietary rights in and to this software, 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.
+*/
+
+#ifndef NVBLASTFIXEDBOOLARRAY_H
+#define NVBLASTFIXEDBOOLARRAY_H
+
+#include "NvBlastAssert.h"
+#include "NvBlastMemory.h"
+#include <cstring>
+
+namespace Nv
+{
+namespace Blast
+{
+
+/*!
+FixedBoolArray is an array of bools of fixed size, it's intended to be used with placement new on chunk of memory.
+It'll use following memory for data layout. As follows:
+
+// some memory
+char *buf = new char[64 * 1024];
+
+const uint32_t size = 100;
+
+// placement new on this memory
+FixedBoolArray* arr = new (buf) FixedBoolArray(size);
+
+// you can get max requiredMemorySize by an bitMap to use memory left
+buf = buf + FixedBoolArray<SomeClass>::requiredMemorySize(size);
+
+buf:
+
++------------------------------------------------------------+
+|  uint32_t  |  bool0  |  bool1  |  bool2  |       ...       |
++------------------------------------------------------------+
+
+*/
+class FixedBoolArray
+{
+public:
+	explicit FixedBoolArray(uint32_t size)
+	{
+		m_size = size;
+	}
+
+	static size_t requiredMemorySize(uint32_t size)
+	{
+		return align16(sizeof(FixedBoolArray)) + align16(size);
+	}
+
+	void clear()
+	{
+		memset(data(), 0, m_size);
+	}
+
+	void fill()
+	{
+		memset(data(), 1, m_size);
+	}
+
+	int test(uint32_t index) const
+	{
+		NVBLAST_ASSERT(index < m_size);
+		return data()[index];
+	}
+
+	void set(uint32_t index)
+	{
+		NVBLAST_ASSERT(index < m_size);
+		data()[index] = 1;
+	}
+
+	void reset(uint32_t index)
+	{
+		NVBLAST_ASSERT(index < m_size);
+		data()[index] = 0;
+	}
+
+private:
+	uint32_t m_size;
+
+	NV_FORCE_INLINE char* data()
+	{
+		return ((char*)this + sizeof(FixedBoolArray));
+	}
+
+	NV_FORCE_INLINE const char* data() const
+	{
+		return ((char*)this + sizeof(FixedBoolArray));
+	}
+
+private:
+	FixedBoolArray(const FixedBoolArray& that);
+};
+
+} // namespace Blast
+} // namespace Nv
+
+#endif // ifndef NVBLASTFIXEDBOOLARRAY_H