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/*
* 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.
*/
#include "NvBlastAsset.h"
#include "NvBlastIndexFns.h"
#include "NvBlastAssert.h"
#include "NvBlastMemory.h"
#include <algorithm>
namespace Nv
{
namespace Blast
{
/**
Class to hold chunk descriptor and annotation context for sorting a list of indices
*/
class ChunksOrdered
{
public:
ChunksOrdered(const NvBlastChunkDesc* descs, const char* annotation) : m_descs(descs), m_annotation(annotation) {}
bool operator () (uint32_t i0, uint32_t i1) const
{
const bool upperSupport0 = (m_annotation[i0] & Asset::ChunkAnnotation::UpperSupport) != 0;
const bool upperSupport1 = (m_annotation[i1] & Asset::ChunkAnnotation::UpperSupport) != 0;
if (upperSupport0 != upperSupport1)
{
return upperSupport0; // If one is uppersupport and one is subsupport, uppersupport should come first
}
// Parent chunk index (+1 so that UINT32_MAX becomes the lowest value)
const uint32_t p0 = m_descs[i0].parentChunkIndex + 1;
const uint32_t p1 = m_descs[i1].parentChunkIndex + 1;
return p0 < p1; // With the same support relationship, order by parent index
}
private:
const NvBlastChunkDesc* m_descs;
const char* m_annotation;
};
} // namespace Blast
} // namespace Nv
using namespace Nv::Blast;
extern "C"
{
bool NvBlastBuildAssetDescChunkReorderMap(uint32_t* chunkReorderMap, const NvBlastChunkDesc* chunkDescs, uint32_t chunkCount, void* scratch, NvBlastLog logFn)
{
NVBLAST_CHECK(chunkCount == 0 || chunkDescs != nullptr, logFn, "NvBlastBuildAssetDescChunkReorderMap: NULL chunkDescs input with non-zero chunkCount", return false);
NVBLAST_CHECK(chunkReorderMap == nullptr || chunkCount != 0, logFn, "NvBlastBuildAssetDescChunkReorderMap: NULL chunkReorderMap input with non-zero chunkCount", return false);
NVBLAST_CHECK(chunkCount == 0 || scratch != nullptr, logFn, "NvBlastBuildAssetDescChunkReorderMap: NULL scratch input with non-zero chunkCount", return false);
uint32_t* chunkMap = static_cast<uint32_t*>(scratch); scratch = pointerOffset(scratch, chunkCount * sizeof(uint32_t));
char* chunkAnnotation = static_cast<char*>(scratch); scratch = pointerOffset(scratch, chunkCount * sizeof(char));
uint32_t supportChunkCount;
uint32_t leafChunkCount;
if (!Asset::ensureExactSupportCoverage(supportChunkCount, leafChunkCount, chunkAnnotation, chunkCount, const_cast<NvBlastChunkDesc*>(chunkDescs), true, logFn))
{
NVBLAST_LOG_ERROR(logFn, "NvBlastBuildAssetDescChunkReorderMap: chunk descriptors did not have exact coverage, map could not be built. Use NvBlastEnsureAssetExactSupportCoverage to fix descriptors.");
return false;
}
// check order for fast out (identity map)
if (Asset::testForValidChunkOrder(chunkCount, chunkDescs, chunkAnnotation, scratch))
{
for (uint32_t i = 0; i < chunkCount; ++i)
{
chunkReorderMap[i] = i;
}
return true;
}
for (uint32_t i = 0; i < chunkCount; ++i)
{
chunkMap[i] = i;
}
std::sort(chunkMap, chunkMap + chunkCount, ChunksOrdered(chunkDescs, chunkAnnotation));
invertMap(chunkReorderMap, chunkMap, chunkCount);
return false;
}
void NvBlastApplyAssetDescChunkReorderMap
(
NvBlastChunkDesc* reorderedChunkDescs,
const NvBlastChunkDesc* chunkDescs,
uint32_t chunkCount,
NvBlastBondDesc* bondDescs,
uint32_t bondCount,
const uint32_t* chunkReorderMap,
NvBlastLog logFn
)
{
NVBLAST_CHECK(chunkCount == 0 || chunkDescs != nullptr, logFn, "NvBlastApplyAssetDescChunkReorderMap: NULL chunkDescs input with non-zero chunkCount", return);
NVBLAST_CHECK(reorderedChunkDescs == nullptr || chunkCount != 0, logFn, "NvBlastApplyAssetDescChunkReorderMap: NULL reorderedChunkDescs input with non-zero chunkCount", return);
NVBLAST_CHECK(chunkReorderMap == nullptr || chunkCount != 0, logFn, "NvBlastApplyAssetDescChunkReorderMap: NULL chunkReorderMap input with non-zero chunkCount", return);
NVBLAST_CHECK(bondCount == 0 || bondDescs != nullptr, logFn, "NvBlastApplyAssetDescChunkReorderMap: NULL bondDescs input with non-zero bondCount", return);
NVBLAST_CHECK(bondDescs == nullptr || chunkReorderMap != nullptr, logFn, "NvBlastApplyAssetDescChunkReorderMap: NULL bondDescs input with NULL chunkReorderMap", return);
// Copy chunk descs
if (reorderedChunkDescs)
{
for (uint32_t i = 0; i < chunkCount; ++i)
{
reorderedChunkDescs[chunkReorderMap[i]] = chunkDescs[i];
uint32_t& parentIndex = reorderedChunkDescs[chunkReorderMap[i]].parentChunkIndex;
if (parentIndex < chunkCount)
{
parentIndex = chunkReorderMap[parentIndex]; // If the parent index is valid, remap it too to reflect the new order
}
}
}
if (bondDescs)
{
for (uint32_t i = 0; i < bondCount; ++i)
{
for (int j = 0; j < 2; ++j)
{
uint32_t& index = bondDescs[i].chunkIndices[j];
if (index < chunkCount)
{
index = chunkReorderMap[index];
}
}
}
}
}
void NvBlastApplyAssetDescChunkReorderMapInplace(NvBlastChunkDesc* chunkDescs, uint32_t chunkCount, NvBlastBondDesc* bondDescs, uint32_t bondCount, const uint32_t* chunkReorderMap, void* scratch, NvBlastLog logFn)
{
NVBLAST_CHECK(chunkCount == 0 || chunkDescs != nullptr, logFn, "NvBlastApplyAssetDescChunkReorderMapInplace: NULL chunkDescs input with non-zero chunkCount", return);
NVBLAST_CHECK(chunkCount == 0 || scratch != nullptr, logFn, "NvBlastApplyAssetDescChunkReorderMapInplace: NULL scratch input with non-zero chunkCount", return);
NvBlastChunkDesc* chunksTemp = static_cast<NvBlastChunkDesc*>(scratch);
memcpy(chunksTemp, chunkDescs, sizeof(NvBlastChunkDesc) * chunkCount);
NvBlastApplyAssetDescChunkReorderMap(chunkDescs, chunksTemp, chunkCount, bondDescs, bondCount, chunkReorderMap, logFn);
}
bool NvBlastReorderAssetDescChunks(NvBlastChunkDesc* chunkDescs, uint32_t chunkCount, NvBlastBondDesc* bondDescs, uint32_t bondCount, uint32_t* chunkReorderMap, void* scratch, NvBlastLog logFn)
{
if (!NvBlastBuildAssetDescChunkReorderMap(chunkReorderMap, chunkDescs, chunkCount, scratch, logFn))
{
NvBlastApplyAssetDescChunkReorderMapInplace(chunkDescs, chunkCount, bondDescs, bondCount, chunkReorderMap, scratch, logFn);
return false;
}
return true;
}
bool NvBlastEnsureAssetExactSupportCoverage(NvBlastChunkDesc* chunkDescs, uint32_t chunkCount, void* scratch, NvBlastLog logFn)
{
NVBLAST_CHECK(chunkCount == 0 || chunkDescs != nullptr, logFn, "NvBlastEnsureAssetExactSupportCoverage: NULL chunkDescs input with non-zero chunkCount", return false);
NVBLAST_CHECK(chunkCount == 0 || scratch != nullptr, logFn, "NvBlastEnsureAssetExactSupportCoverage: NULL scratch input with non-zero chunkCount", return false);
uint32_t supportChunkCount;
uint32_t leafChunkCount;
return Asset::ensureExactSupportCoverage(supportChunkCount, leafChunkCount, static_cast<char*>(scratch), chunkCount, chunkDescs, false, logFn);
}
} // extern "C"
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