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MESHOPTIMIZER_API size_t meshopt_encodeIndexBufferBound(size_t index_count, size_t vertex_count);

/**

 * version must specify the data format version to encode; valid values are 0 (decodable by all library versions) and 1 (decodable by 0.14+)

 */

MESHOPTIMIZER_API void meshopt_encodeIndexVersion(int version);

MESHOPTIMIZER_API int meshopt_decodeIndexBuffer(void* destination, size_t index_count, size_t index_size, const unsigned char* buffer, size_t buffer_size);

/**

 * Encodes index sequence into an array of bytes that is generally smaller and compresses better compared to original.

 * Input index sequence can represent arbitrary topology; for triangle lists meshopt_encodeIndexBuffer is likely to be better.

 * Returns encoded data size on success, 0 on error; the only error condition is if buffer doesn't have enough space

MESHOPTIMIZER_API size_t meshopt_encodeVertexBufferBound(size_t vertex_count, size_t vertex_size);

/**

 * version must specify the data format version to encode; valid values are 0 (decodable by all library versions)

 */

MESHOPTIMIZER_API void meshopt_encodeVertexVersion(int version);

};

/**

 * Splits the mesh into a set of meshlets where each meshlet has a micro index buffer indexing into meshlet vertices that refer to the original vertex buffer

 * The resulting data can be used to render meshes using NVidia programmable mesh shading pipeline, or in other cluster-based renderers.

 * When using buildMeshlets, vertex positions need to be provided to minimize the size of the resulting clusters.

};

/**

 * Creates bounding volumes that can be used for frustum, backface and occlusion culling.

 *

 * For backface culling with orthographic projection, use the following formula to reject backfacing clusters: