Struct GpuMesh 

pub struct GpuMesh {

    pub vertex_buffer: Buffer,
    pub index_buffer: Buffer,
    pub index_count: u32,
    pub edge_index_buffer: Buffer,
    pub edge_index_count: u32,
    pub normal_line_buffer: Option<Buffer>,
    pub normal_line_count: u32,
    pub object_uniform_buf: Buffer,
    pub object_bind_group: BindGroup,
    pub attribute_buffers: HashMap<String, Buffer>,
    pub attribute_ranges: HashMap<String, (f32, f32)>,
    pub normal_uniform_buf: Buffer,
    pub normal_bind_group: BindGroup,
    pub aabb: Aabb,
    /* private fields */
}

GPU buffers and bind group for a single mesh.

Fields

vertex_buffer: Buffer

Interleaved position + normal vertex buffer (Vertex layout).

index_buffer: Buffer

Triangle index buffer (for solid rendering).

index_count: u32

Number of indices in the triangle index buffer.

edge_index_buffer: Buffer

Edge index buffer (deduplicated pairs, for wireframe LineList rendering).

edge_index_count: u32

Number of indices in the edge index buffer.

normal_line_buffer: Option<Buffer>

Vertex buffer for per-vertex normal visualization lines (LineList topology). Each normal contributes two vertices: the vertex position and position + normal * 0.1. None if no normal data is available.

normal_line_count: u32

Number of vertices in the normal line buffer (2 per normal line).

object_uniform_buf: Buffer

Per-object uniform buffer (model matrix, material, selection state).

object_bind_group: BindGroup

Bind group (group 1) combining object_uniform_buf with texture views. Texture views are the fallback 1×1 textures by default; rebuilt when material texture assignment changes (tracked via last_tex_key).

attribute_buffers: HashMap<String, Buffer>

Per-named-attribute GPU storage buffers (f32 per vertex, STORAGE usage).

attribute_ranges: HashMap<String, (f32, f32)>

Scalar range (min, max) per attribute, computed at upload time.

normal_uniform_buf: Buffer

Uniform buffer for normal-line rendering: always has selected=0, wireframe=0. Updated each frame in prepare() with the object’s model matrix only.

normal_bind_group: BindGroup

Bind group referencing normal_uniform_buf — used when drawing normal lines.

aabb: Aabb

Local-space axis-aligned bounding box computed from vertex positions at upload time.