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Reverse Z order of interior elements for early Z

This commit is contained in:
Patrick Walton 2017-09-06 18:28:23 -07:00
parent cedce49a1d
commit 2166f9fa07
1 changed files with 14 additions and 0 deletions
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14
demo/server/src/main.rs
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@ -318,6 +318,20 @@ fn partition_paths(partitioner: &mut Partitioner, subpath_indices: &[SubpathRang
})
}
// Reverse interior indices for early Z optimizations.
let mut new_cover_interior_indices = Vec::with_capacity(cover_interior_indices.len());
for path_indices in &mut path_indices {
let old_byte_start = path_indices.cover_interior_indices.start * mem::size_of::<u32>();
let old_byte_end = path_indices.cover_interior_indices.end * mem::size_of::<u32>();
let new_start_index = new_cover_interior_indices.len() / mem::size_of::<u32>();
new_cover_interior_indices.extend(
cover_interior_indices[old_byte_start..old_byte_end].into_iter());
let new_end_index = new_cover_interior_indices.len() / mem::size_of::<u32>();
path_indices.cover_interior_indices.start = new_start_index;
path_indices.cover_interior_indices.end = new_end_index;
}
cover_interior_indices = new_cover_interior_indices;
let encoded_path_data = PartitionEncodedPathData {
b_quads: base64::encode(&b_quads),
b_vertex_positions: base64::encode(&b_vertex_positions),