zeux/meshoptimizer
Meshoptimizer
meshoptimizer is a 3D mesh optimization library designed to compress geometry and animation data, reduce memory usage, and improve rendering performance. It functions as a geometry simplification tool, a mesh compression codec, and a utility for preparing data for mesh shaders and raytracing acceleration.
The library provides specialized toolsets for partitioning meshes into clusters and meshlets to optimize hardware-accelerated rendering pipelines. It also includes helpers for generating opacity micromaps and spatial clusters to increase the speed of hardware ray-triangle intersection tests.
Its broader capabilities cover geometry processing, including triangle count reduction and the generation of level-of-detail hierarchies. It offers data compression and storage methods for vertex and index buffers, alongside rendering performance tuning through vertex cache and fetch optimization.
The project is implemented in C++.
Features
- 3D Mesh Compression - Compresses geometry and animation data using specialized codecs to minimize download sizes for real-time applications.
- Mesh Optimization - Provides a comprehensive toolkit for refining 3D geometry through decimation and buffer optimization.
- Mesh Simplification - Reduces the number of triangles in a mesh while preserving geometric appearance using a target error threshold.
- 3D Performance Optimization - Reduces 3D model size and complexity to improve rendering performance and decrease loading times.
- Vertex and Texture Buffer Optimizations - Reorders triangles to increase the locality of reused vertex references and reduce total vertex shader invocations.
- Attribute-Preserving Mesh Simplification - Reduces triangle counts using specific attribute weights to preserve critical shading and texture details.
- Error-Metric Mesh Simplification - Reduces triangle counts by collapsing edges based on a geometric error threshold to maintain visual shape.
- Geometric Data Compression - Encodes triangle indices into a compact representation to achieve a smaller memory footprint.
- Geometry Simplification Tools - Reduces triangle counts in meshes while preserving visual shape and critical attribute seams.
- GPU Rendering Performance Tuning - Reorders vertex and index buffers to optimize cache locality and reduce shader invocations during rendering.
- Vertex Data Compression - Encodes quantized vertex buffers using specialized codecs that exploit sequential locality to reduce memory usage.
- Vertex Fetch Optimization - Reorders vertex buffers to match index order, improving memory cache hit rates during rendering.
- Vertex Indexing Generation - Creates index buffers from unindexed data and removes redundant vertices to optimize storage.
- Hardware-Accelerated Ray Tracing - Provides specialized tools for generating opacity micromaps and spatial clusters to accelerate hardware-accelerated ray tracing.
- Mesh Shader Toolsets - Provides utilities for partitioning meshes into clusters and meshlets to optimize hardware-accelerated pipelines.
- Meshlet Generation - Partitions meshes into small vertex and triangle clusters to optimize use with mesh shaders.
- Meshlet Partitioning - Implements cluster-based meshlet partitioning to optimize hardware-accelerated rendering pipelines.
- Mesh Processing APIs - Simplifies meshes by lowering triangle counts while preserving geometric appearance and attribute seams.
- Meshlet Partitioning - Clusters surface areas into meshlets to create optimal spatial partitioning for faster raytracing acceleration structures.
- Redundant Vertex Removal - Merges binary-equivalent vertices and generates index buffers to reduce storage and improve rendering.
- Cluster Hierarchies - Meshoptimizer creates a hierarchy of clusters with varying detail levels to optimize rendering based on distance.
- Vertex Attribute Quantization - Converts floating-point vertex attributes to small integer types to reduce memory bandwidth and storage.
- Vertex Cache-Aware Reordering - Rearranges triangle indices to maximize vertex reuse and minimize vertex shader invocations.
- Spatial Cluster Partitioning - Groups meshlets into larger partitions based on shared boundaries to optimize workload distribution and raytracing.
- Attribute-Weighted Decimation - Provides geometry simplification that preserves critical shading and texture seams via attribute-weighted decimation.
- Shadow Index Buffers - Creates a specialized index buffer for depth-only rendering passes to reduce the total count of unique vertices.
- Opacity Micromaps - Creates opacity masks from alpha textures to speed up ray-triangle intersection tests during hardware raytracing.
- Hierarchical Level of Detail - Creates hierarchical levels of detail for complex meshes to maintain performance based on camera distance.
- Overdraw Minimization - Reorders triangles to reduce the number of pixels shaded multiple times and improve pixel shader efficiency.
- Sequential-Locality Codecs - Encodes quantized geometry data using differential offsets and bit-packing to exploit sequential vertex patterns.
- Simplification Vertex Updating - Adjusts vertex positions and attributes during mesh reduction to maintain high visual quality during aggressive simplification.
- Raytracing Acceleration Structures - Builds spatial clusters and opacity micromaps to speed up ray-triangle intersection tests in hardware raytracing.
- Meshlet Data Compression - Encodes vertex references and triangle data independently to allow for high-speed decompression.
- Geometry Processing - Mesh optimization for smaller, faster rendering.
- Mesh Optimization and LOD - Library for mesh optimization and rendering performance.
- Mesh Optimization and Processing - Library for optimizing mesh rendering performance.
