AeThex-Engine-Core/engine/thirdparty/meshoptimizer/vfetchoptimizer.cpp
MrPiglr 9dddce666d
🚀 AeThex Engine v1.0 - Complete Fork
- Forked from Godot Engine 4.7-dev (MIT License)
- Rebranded to AeThex Engine with cyan/purple theme
- Added AI-powered development assistant module
- Integrated Claude API for code completion & error fixing
- Custom hexagon logo and branding
- Multi-platform CI/CD (Windows, Linux, macOS)
- Built Linux editor binary (151MB)
- Complete source code with all customizations

Tech Stack:
- C++ game engine core
- AI Module: Claude 3.5 Sonnet integration
- Build: SCons, 14K+ source files
- License: MIT (Godot) + Custom (AeThex features)

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2026-02-23 05:01:56 +00:00

74 lines
1.9 KiB
C++

// This file is part of meshoptimizer library; see meshoptimizer.h for version/license details
#include "meshoptimizer.h"
#include <assert.h>
#include <string.h>
size_t meshopt_optimizeVertexFetchRemap(unsigned int* destination, const unsigned int* indices, size_t index_count, size_t vertex_count)
{
assert(index_count % 3 == 0);
memset(destination, -1, vertex_count * sizeof(unsigned int));
unsigned int next_vertex = 0;
for (size_t i = 0; i < index_count; ++i)
{
unsigned int index = indices[i];
assert(index < vertex_count);
if (destination[index] == ~0u)
{
destination[index] = next_vertex++;
}
}
assert(next_vertex <= vertex_count);
return next_vertex;
}
size_t meshopt_optimizeVertexFetch(void* destination, unsigned int* indices, size_t index_count, const void* vertices, size_t vertex_count, size_t vertex_size)
{
assert(index_count % 3 == 0);
assert(vertex_size > 0 && vertex_size <= 256);
meshopt_Allocator allocator;
// support in-place optimization
if (destination == vertices)
{
unsigned char* vertices_copy = allocator.allocate<unsigned char>(vertex_count * vertex_size);
memcpy(vertices_copy, vertices, vertex_count * vertex_size);
vertices = vertices_copy;
}
// build vertex remap table
unsigned int* vertex_remap = allocator.allocate<unsigned int>(vertex_count);
memset(vertex_remap, -1, vertex_count * sizeof(unsigned int));
unsigned int next_vertex = 0;
for (size_t i = 0; i < index_count; ++i)
{
unsigned int index = indices[i];
assert(index < vertex_count);
unsigned int& remap = vertex_remap[index];
if (remap == ~0u) // vertex was not added to destination VB
{
// add vertex
memcpy(static_cast<unsigned char*>(destination) + next_vertex * vertex_size, static_cast<const unsigned char*>(vertices) + index * vertex_size, vertex_size);
remap = next_vertex++;
}
// modify indices in place
indices[i] = remap;
}
assert(next_vertex <= vertex_count);
return next_vertex;
}