Struct Attribute 

pub struct Attribute {
    pub buffer: BufferRef,
    pub data: Option<Arc<Vec<u8>>>,
    pub format: VertexFormat,
    pub offset: u64,
    pub count: u32,
    pub stride: u64,
    pub step_mode: VertexStepMode,
}

Attribute holds CPU-side data (Option<Arc<Vec<u8>>>) and metadata.

Fields

buffer: BufferRef

data: Option<Arc<Vec<u8>>>

CPU-side data shared via Arc (supports interleaved buffers)

format: VertexFormat

offset: u64

count: u32

stride: u64

step_mode: VertexStepMode

Implementations

impl Attribute

pub fn new_planar<T>(data: &[T], format: VertexFormat) -> Attribute

where T: Pod,

Creates a Planar (non-interleaved) attribute

pub fn new_from_owned_bytes( data: Vec<u8>, format: VertexFormat, stride: usize, count: u32, ) -> Attribute

Creates a Planar attribute from pre-built raw bytes and a known stride.

Used by the quantised geometry pipeline where vertex data is already in its final GPU-ready byte layout (e.g. Snorm16x4) and no further CPU-side conversion is needed.

pub fn new_instanced<T>(data: &[T], format: VertexFormat) -> Attribute

where T: Pod,

Creates an Instance attribute

pub fn new_interleaved( buffer: BufferRef, data: Option<Arc<Vec<u8>>>, format: VertexFormat, offset: u64, count: u32, stride: u64, step_mode: VertexStepMode, ) -> Attribute

Creates an Interleaved attribute Multiple Attributes can share the same BufferRef and data (Arc)

pub fn update_data<T>(&mut self, new_data: &[T])

where T: Pod,

Updates data in-place (preserves ID, reuses GPU memory) Uses Arc::make_mut to implement Copy-On-Write

pub fn update_region<T>(&mut self, offset_bytes: u64, new_data: &[T])

where T: Pod,

Partially updates attribute data

pub fn read_vec3(&self, i: u32) -> Option<Vec3>

pub fn read_vec4(&self, i: u32) -> Option<Vec4>

pub fn read<T>(&self, i: u32) -> Option<T>

where T: Pod,

Trait Implementations

impl Clone for Attribute

fn clone(&self) -> Attribute

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Attribute

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.