Struct MeshHandle 

pub struct MeshHandle {
    pub layouts: Vec<(ATTRInfo, u32)>,
    pub draw_mode: DrawMode,
    pub has_indices: bool,
    pub vert_count: u32,
    pub ind_count: u32,
    pub vao_id: u32,
    pub buf_id: u32,
    pub ind_id: u32,
    pub vert_stride: u32,
    pub instance_buf_id: u32,
    pub instance_count: u32,
}

Low-level OpenGL mesh handle wrapping VAO, VBO, IBO, and instance state.

Created by Mesh3DFile::ship or Mesh2DFile::ship. Contains the vertex layouts, draw mode, index state, and instance buffer binding.

Fields

layouts: Vec<(ATTRInfo, u32)>

draw_mode: DrawMode

has_indices: bool

vert_count: u32

ind_count: u32

vao_id: u32

buf_id: u32

ind_id: u32

vert_stride: u32

instance_buf_id: u32

instance_count: u32

Implementations

impl MeshHandle

pub fn draw(&self)

Issues the draw call for this mesh (instanced or non-instanced, indexed or array).

pub fn set_instances(&mut self, buffer: &InstanceBuffer)

Binds an instance buffer to this mesh for instanced rendering.

Instance attributes are appended after the vertex attributes using glVertexAttribDivisor(1).

pub fn update_vertex<D: DataType>( &self, index: u32, attr_index: usize, value: D, ) -> OpticResult<()>

Updates a single vertex attribute value on the GPU.

The type D must match the attribute’s declared type at creation time.

pub fn get_vertex<D: DataType>( &self, index: u32, attr_index: usize, ) -> OpticResult<D>

Reads a single vertex attribute value from the GPU.

pub fn write_range(&self, start_vertex: u32, data: &[u8]) -> OpticResult<()>

Writes raw vertex data starting at start_vertex.

data length must be a multiple of the vertex stride.

pub fn delete(self)

Deletes the VAO, VBO, and IBO from the GPU.

Trait Implementations

impl Clone for MeshHandle

fn clone(&self) -> MeshHandle

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MeshHandle

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

Formats the value using the given formatter.