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Mesh: added static and dynamic mesh for less runtime memory usage #1782

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Mesh: added static and dynamic mesh for less runtime memory usage #1782

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6511cac
initial commit
Mar 28, 2021
100a832
clippy + name changes
Mar 28, 2021
f840a09
improved warning message
Mar 28, 2021
84105c2
improved naming + use warn! macro
Mar 29, 2021
535ce48
Update mesh.rs
Mar 29, 2021
85266d0
Update mesh.rs
Mar 29, 2021
7d95fb1
mesh API v2
Mar 30, 2021
50bfbb5
Update mesh.rs
Mar 30, 2021
62da0d7
Update mesh.rs
Mar 30, 2021
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14 changes: 8 additions & 6 deletions crates/bevy_gltf/src/loader.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -33,6 +33,7 @@ use std::{
use thiserror::Error;

use crate::{Gltf, GltfNode};
use bevy_render::mesh::MeshData;

/// An error that occurs when loading a GLTF file
#[derive(Error, Debug)]
Expand Down Expand Up @@ -112,40 +113,41 @@ async fn load_gltf<'a, 'b>(
let reader = primitive.reader(|buffer| Some(&buffer_data[buffer.index()]));
let primitive_topology = get_primitive_topology(primitive.mode())?;

let mut mesh = Mesh::new(primitive_topology);
let mut mesh_data = MeshData::default();

if let Some(vertex_attribute) = reader
.read_positions()
.map(|v| VertexAttributeValues::Float3(v.collect()))
{
mesh.set_attribute(Mesh::ATTRIBUTE_POSITION, vertex_attribute);
mesh_data.set_attribute(MeshData::ATTRIBUTE_POSITION, vertex_attribute);
}

if let Some(vertex_attribute) = reader
.read_normals()
.map(|v| VertexAttributeValues::Float3(v.collect()))
{
mesh.set_attribute(Mesh::ATTRIBUTE_NORMAL, vertex_attribute);
mesh_data.set_attribute(MeshData::ATTRIBUTE_NORMAL, vertex_attribute);
}

if let Some(vertex_attribute) = reader
.read_tangents()
.map(|v| VertexAttributeValues::Float4(v.collect()))
{
mesh.set_attribute(Mesh::ATTRIBUTE_TANGENT, vertex_attribute);
mesh_data.set_attribute(MeshData::ATTRIBUTE_TANGENT, vertex_attribute);
}

if let Some(vertex_attribute) = reader
.read_tex_coords(0)
.map(|v| VertexAttributeValues::Float2(v.into_f32().collect()))
{
mesh.set_attribute(Mesh::ATTRIBUTE_UV_0, vertex_attribute);
mesh_data.set_attribute(MeshData::ATTRIBUTE_UV_0, vertex_attribute);
}

if let Some(indices) = reader.read_indices() {
mesh.set_indices(Some(Indices::U32(indices.into_u32().collect())));
mesh_data.set_indices(Some(Indices::U32(indices.into_u32().collect())));
};

let mesh = Mesh::new_static(primitive_topology, mesh_data);
let mesh = load_context.set_labeled_asset(&primitive_label, LoadedAsset::new(mesh));
primitives.push(super::GltfPrimitive {
mesh,
Expand Down
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