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# sdk/common/NvBlastFixedBitmap.h

Go to the documentation of this file.

    00001 ﻿// This code contains NVIDIA Confidential Information and is disclosed to you
    00002 // under a form of NVIDIA software license agreement provided separately to you.
    00003 //
    00004 // Notice
    00005 // NVIDIA Corporation and its licensors retain all intellectual property and
    00006 // proprietary rights in and to this software and related documentation and
    00007 // any modifications thereto. Any use, reproduction, disclosure, or
    00008 // distribution of this software and related documentation without an express
    00009 // license agreement from NVIDIA Corporation is strictly prohibited.
    00010 //
    00011 // ALL NVIDIA DESIGN SPECIFICATIONS, CODE ARE PROVIDED "AS IS.". NVIDIA MAKES
    00012 // NO WARRANTIES, EXPRESSED, IMPLIED, STATUTORY, OR OTHERWISE WITH RESPECT TO
    00013 // THE MATERIALS, AND EXPRESSLY DISCLAIMS ALL IMPLIED WARRANTIES OF NONINFRINGEMENT,
    00014 // MERCHANTABILITY, AND FITNESS FOR A PARTICULAR PURPOSE.
    00015 //
    00016 // Information and code furnished is believed to be accurate and reliable.
    00017 // However, NVIDIA Corporation assumes no responsibility for the consequences of use of such
    00018 // information or for any infringement of patents or other rights of third parties that may
    00019 // result from its use. No license is granted by implication or otherwise under any patent
    00020 // or patent rights of NVIDIA Corporation. Details are subject to change without notice.
    00021 // This code supersedes and replaces all information previously supplied.
    00022 // NVIDIA Corporation products are not authorized for use as critical
    00023 // components in life support devices or systems without express written approval of
    00024 // NVIDIA Corporation.
    00025 //
    00026 // Copyright (c) 2016-2020 NVIDIA Corporation. All rights reserved.
    00027
    00028
    00029 #ifndef NVBLASTFIXEDBITMAP_H
    00030 #define NVBLASTFIXEDBITMAP_H
    00031
    00032 #include "NvBlastAssert.h"
    00033 #include "NvBlastMemory.h"
    00034 #include <cstring>
    00035
    00036 namespace Nv
    00037 {
    00038 namespace Blast
    00039 {
    00040
    00063 class FixedBitmap
    00064 {
    00065 public:
    00066     explicit FixedBitmap(uint32_t bitsCount)
    00067     {
    00068         m_bitsCount = bitsCount;
    00069     }
    00070
    00071     static uint32_t getWordsCount(uint32_t bitsCount)
    00072     {
    00073         return (bitsCount + 31) >> 5;
    00074     }
    00075
    00076     static size_t requiredMemorySize(uint32_t bitsCount)
    00077     {
    00078         return align16(sizeof(FixedBitmap)) + align16(getWordsCount(bitsCount) * sizeof(uint32_t));
    00079     }
    00080
    00081     void clear()
    00082     {
    00083         memset(data(), 0, getWordsCount(m_bitsCount) * sizeof(uint32_t));
    00084     }
    00085
    00086     void fill()
    00087     {
    00088         const uint32_t wordCount = getWordsCount(m_bitsCount);
    00089         uint32_t* mem = data();
    00090         memset(mem, 0xFF, wordCount * sizeof(uint32_t));
    00091         const uint32_t bitsRemainder = m_bitsCount & 31;
    00092         if (bitsRemainder > 0)
    00093         {
    00094             mem[wordCount - 1] &= ~(0xFFFFFFFF << bitsRemainder);
    00095         }
    00096     }
    00097
    00098     int test(uint32_t index) const
    00099     {
    00100         NVBLAST_ASSERT(index < m_bitsCount);
    00101         return data()[index >> 5] & (1 << (index & 31));
    00102     }
    00103
    00104     void set(uint32_t index)
    00105     {
    00106         NVBLAST_ASSERT(index < m_bitsCount);
    00107         data()[index >> 5] |= 1 << (index & 31);
    00108     }
    00109
    00110     void reset(uint32_t index)
    00111     {
    00112         NVBLAST_ASSERT(index < m_bitsCount);
    00113         data()[index >> 5] &= ~(1 << (index & 31));
    00114     }
    00115
    00116 private:
    00117     uint32_t m_bitsCount;
    00118
    00119     NV_FORCE_INLINE uint32_t* data()
    00120     {
    00121         return (uint32_t*)((char*)this + sizeof(FixedBitmap));
    00122     }
    00123
    00124     NV_FORCE_INLINE const uint32_t* data() const
    00125     {
    00126         return (uint32_t*)((char*)this + sizeof(FixedBitmap));
    00127     }
    00128
    00129 private:
    00130     FixedBitmap(const FixedBitmap& that);
    00131 };
    00132
    00133 } // namespace Blast
    00134 } // namespace Nv
    00135
    00136 #endif // ifndef NVBLASTFIXEDBITMAP_H

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