69 lines
2.5 KiB
C++
69 lines
2.5 KiB
C++
/**
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* @file llmeshoptimizer.cpp
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* @brief Wrapper around meshoptimizer
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*
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* $LicenseInfo:firstyear=2021&license=viewerlgpl$
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* Second Life Viewer Source Code
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* Copyright (C) 2021, Linden Research, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License only.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
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* $/LicenseInfo$
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*/
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#include "llmeshoptimizer.h"
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#include "meshoptimizer.h"
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LLMeshOptimizer::LLMeshOptimizer()
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{
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// Todo: Looks like for memory management, we can add allocator and deallocator callbacks
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// Should be one time
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// meshopt_setAllocator(allocate, deallocate);
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}
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LLMeshOptimizer::~LLMeshOptimizer()
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{
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}
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//static
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U64 LLMeshOptimizer::simplify(U16 *destination,
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const U16 *indices,
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U64 index_count,
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const LLVector4a *vertex_positions,
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U64 vertex_count,
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U64 target_index_count,
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F32 target_error,
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F32* result_error
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)
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{
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const size_t vertex_stride = 4; // should be either 0 or 4
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// Consider running meshopt_generateShadowIndexBuffer<unsigned short> first.
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// meshopt_generateShadowIndexBuffer is only needed if models don't use some of the vertices,
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// but since we call optimize() in a lot of cases, it likely isn't needed
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return meshopt_simplify<unsigned short>(destination,
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indices,
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index_count,
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(const float*)vertex_positions, // verify that it is correct to convert to float
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vertex_count,
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vertex_stride,
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target_index_count,
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target_error,
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result_error
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);
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}
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