Function optimize_vertex_cache_fifo 

pub fn optimize_vertex_cache_fifo(
    destination: &mut [u32],
    indices: &[u32],
    vertex_count: usize,
    cache_size: u32,
)

Reorders indices to reduce the number of GPU vertex shader invocations (for FIFO caches).

Generally takes ~3x less time to optimize meshes but produces inferior results compared to optimize_vertex_cache. If index buffer contains multiple ranges for multiple draw calls, this functions needs to be called on each range individually.

Arguments

• destination: must contain enough space for the resulting index buffer (indices.len() elements)
• cache_size: should be less than the actual GPU cache size to avoid cache thrashing