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-rw-r--r--indra/llmeshoptimizer/CMakeLists.txt44
-rw-r--r--indra/llmeshoptimizer/llmeshoptimizer.cpp142
-rw-r--r--indra/llmeshoptimizer/llmeshoptimizer.h83
3 files changed, 269 insertions, 0 deletions
diff --git a/indra/llmeshoptimizer/CMakeLists.txt b/indra/llmeshoptimizer/CMakeLists.txt
new file mode 100644
index 0000000000..016794cfad
--- /dev/null
+++ b/indra/llmeshoptimizer/CMakeLists.txt
@@ -0,0 +1,44 @@
+# -*- cmake -*-
+
+project(llmeshoptimizer)
+
+include(MESHOPTIMIZER)
+
+include(00-Common)
+include(LLCommon)
+include(LLMath)
+
+include_directories(
+ ${LLCOMMON_INCLUDE_DIRS}
+ ${LLMATH_INCLUDE_DIRS}
+ ${LLMESHOPTIMIZER_INCLUDE_DIR}
+ ${MESHOPTIMIZER_INCLUDE_DIRS}
+ ${LIBS_PREBUILT_DIR}/include #access to boost headers, needed for LLError
+ )
+
+set(llmeshoptimizer_SOURCE_FILES
+ llmeshoptimizer.cpp
+ )
+
+set(llmeshoptimizer_HEADER_FILES
+ CMakeLists.txt
+
+ llmeshoptimizer.h
+ )
+
+set_source_files_properties(${llmeshoptimizer_HEADER_FILES}
+ PROPERTIES HEADER_FILE_ONLY TRUE)
+
+list(APPEND llmeshoptimizer_SOURCE_FILES ${llmeshoptimizer_HEADER_FILES})
+
+#if (USE_MESHOPT)
+ add_library (llmeshoptimizer ${llmeshoptimizer_SOURCE_FILES})
+
+ target_link_libraries(llmeshoptimizer
+ ${LLCOMMON_LIBRARIES}
+ ${LLMATH_LIBRARIES}
+ ${MESHOPTIMIZER_LIBRARIES})
+
+ # Add tests
+
+#endif (USE_MESHOPT)
diff --git a/indra/llmeshoptimizer/llmeshoptimizer.cpp b/indra/llmeshoptimizer/llmeshoptimizer.cpp
new file mode 100644
index 0000000000..a879389c5a
--- /dev/null
+++ b/indra/llmeshoptimizer/llmeshoptimizer.cpp
@@ -0,0 +1,142 @@
+ /**
+* @file llmeshoptimizer.cpp
+* @brief Wrapper around meshoptimizer
+*
+* $LicenseInfo:firstyear=2021&license=viewerlgpl$
+* Second Life Viewer Source Code
+* Copyright (C) 2021, Linden Research, Inc.
+*
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU Lesser General Public
+* License as published by the Free Software Foundation;
+* version 2.1 of the License only.
+*
+* This library is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+* Lesser General Public License for more details.
+*
+* You should have received a copy of the GNU Lesser General Public
+* License along with this library; if not, write to the Free Software
+* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+*
+* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
+* $/LicenseInfo$
+*/
+
+#include "llmeshoptimizer.h"
+
+#include "meshoptimizer.h"
+
+LLMeshOptimizer::LLMeshOptimizer()
+{
+ // Todo: Looks like for memory management, we can add allocator and deallocator callbacks
+ // Should be one time
+ // meshopt_setAllocator(allocate, deallocate);
+}
+
+LLMeshOptimizer::~LLMeshOptimizer()
+{
+}
+
+//static
+void LLMeshOptimizer::generateShadowIndexBuffer(U16 *destination,
+ const U16 *indices,
+ U64 index_count,
+ const LLVector4a *vertex_positions,
+ U64 vertex_count,
+ U64 vertex_positions_stride
+)
+{
+ meshopt_generateShadowIndexBuffer<unsigned short>(destination,
+ indices,
+ index_count,
+ (const float*)vertex_positions, // verify that it is correct to convert to float
+ vertex_count,
+ sizeof(LLVector4a),
+ vertex_positions_stride
+ );
+}
+
+//static
+U64 LLMeshOptimizer::simplifyU32(U32 *destination,
+ const U32 *indices,
+ U64 index_count,
+ const LLVector4a *vertex_positions,
+ U64 vertex_count,
+ U64 vertex_positions_stride,
+ U64 target_index_count,
+ F32 target_error,
+ bool sloppy,
+ F32* result_error
+)
+{
+ if (sloppy)
+ {
+ return meshopt_simplifySloppy<unsigned int>(destination,
+ indices,
+ index_count,
+ (const float*)vertex_positions,
+ vertex_count,
+ vertex_positions_stride,
+ target_index_count,
+ target_error,
+ result_error
+ );
+ }
+ else
+ {
+ return meshopt_simplify<unsigned int>(destination,
+ indices,
+ index_count,
+ (const float*)vertex_positions,
+ vertex_count,
+ vertex_positions_stride,
+ target_index_count,
+ target_error,
+ result_error
+ );
+ }
+}
+
+//static
+U64 LLMeshOptimizer::simplify(U16 *destination,
+ const U16 *indices,
+ U64 index_count,
+ const LLVector4a *vertex_positions,
+ U64 vertex_count,
+ U64 vertex_positions_stride,
+ U64 target_index_count,
+ F32 target_error,
+ bool sloppy,
+ F32* result_error
+ )
+{
+ if (sloppy)
+ {
+ return meshopt_simplifySloppy<unsigned short>(destination,
+ indices,
+ index_count,
+ (const float*)vertex_positions,
+ vertex_count,
+ vertex_positions_stride,
+ target_index_count,
+ target_error,
+ result_error
+ );
+ }
+ else
+ {
+ return meshopt_simplify<unsigned short>(destination,
+ indices,
+ index_count,
+ (const float*)vertex_positions,
+ vertex_count,
+ vertex_positions_stride,
+ target_index_count,
+ target_error,
+ result_error
+ );
+ }
+}
+
diff --git a/indra/llmeshoptimizer/llmeshoptimizer.h b/indra/llmeshoptimizer/llmeshoptimizer.h
new file mode 100644
index 0000000000..e8dd16dae9
--- /dev/null
+++ b/indra/llmeshoptimizer/llmeshoptimizer.h
@@ -0,0 +1,83 @@
+/**
+* @file llmeshoptimizer.h
+* @brief Wrapper around meshoptimizer
+*
+* $LicenseInfo:firstyear=2021&license=viewerlgpl$
+* Second Life Viewer Source Code
+* Copyright (C) 2021, Linden Research, Inc.
+*
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU Lesser General Public
+* License as published by the Free Software Foundation;
+* version 2.1 of the License only.
+*
+* This library is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+* Lesser General Public License for more details.
+*
+* You should have received a copy of the GNU Lesser General Public
+* License along with this library; if not, write to the Free Software
+* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+*
+* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
+* $/LicenseInfo$
+*/
+#ifndef LLMESHOPTIMIZER_H
+#define LLMESHOPTIMIZER_H
+
+#include "linden_common.h"
+
+#include "llmath.h"
+
+class LLMeshOptimizer
+{
+public:
+ LLMeshOptimizer();
+ ~LLMeshOptimizer();
+
+ static void generateShadowIndexBuffer(
+ U16 *destination,
+ const U16 *indices,
+ U64 index_count,
+ const LLVector4a *vertex_positions,
+ U64 vertex_count,
+ U64 vertex_positions_stride);
+
+ // returns amount of indices in destiantion
+ // sloppy engages a variant of a mechanizm that does not respect topology as much
+ // but is much more efective for simpler models
+ // result_error returns how far from original the model is in % if not NULL
+ // Works with U32 indices (LLFace uses U16 indices)
+ static U64 simplifyU32(
+ U32 *destination,
+ const U32 *indices,
+ U64 index_count,
+ const LLVector4a *vertex_positions,
+ U64 vertex_count,
+ U64 vertex_positions_stride,
+ U64 target_index_count,
+ F32 target_error,
+ bool sloppy,
+ F32* result_error);
+
+ // Returns amount of indices in destiantion
+ // sloppy engages a variant of a mechanizm that does not respect topology as much
+ // but is much better for simpler models
+ // result_error returns how far from original the model is in % if not NULL
+ // Meant for U16 indices (LLFace uses U16 indices)
+ static U64 simplify(
+ U16 *destination,
+ const U16 *indices,
+ U64 index_count,
+ const LLVector4a *vertex_positions,
+ U64 vertex_count,
+ U64 vertex_positions_stride,
+ U64 target_index_count,
+ F32 target_error,
+ bool sloppy,
+ F32* result_error);
+private:
+};
+
+#endif //LLMESHOPTIMIZER_H