Struct InstanceData 

#[repr(C)]
pub struct InstanceData {
    pub model_matrix: [[f32; 4]; 4],
    pub material_params: [[f32; 4]; 4],
}

Per-instance data packed for GPU instanced rendering. Each instance gets a transform matrix and material parameters.

Fields

model_matrix: [[f32; 4]; 4]

Model matrix (4x4, column-major, 16 floats).

material_params: [[f32; 4]; 4]

Packed material parameters. [0] = albedo.r, albedo.g, albedo.b, alpha [1] = metallic, roughness, emission_intensity, material_id (as float) [2] = emission.r, emission.g, emission.b, [3] = uv_scale.x, uv_scale.y, uv_offset.x, uv_offset.y

Implementations

impl InstanceData

pub fn new(transform: &Mat4, material: &PbrMaterial) -> Self

Create instance data from a transform and material.

pub fn from_transform(transform: &Mat4) -> Self

Create instance data with just a transform (default material params).

pub fn set_albedo(&mut self, r: f32, g: f32, b: f32)

Set the albedo color.

pub fn set_alpha(&mut self, a: f32)

Set the alpha.

pub fn set_metallic_roughness(&mut self, metallic: f32, roughness: f32)

Set metallic/roughness.

pub fn set_material_id(&mut self, id: u8)

Set the material ID.

pub fn set_emission(&mut self, r: f32, g: f32, b: f32, intensity: f32)

Set emission.

pub fn stride() -> usize

The size of this struct in bytes (for vertex attribute stride).

pub fn glsl_instance_attributes() -> &'static str

Generate GLSL vertex attribute declarations for instanced rendering.

Trait Implementations

impl Clone for InstanceData

fn clone(&self) -> InstanceData

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for InstanceData

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

Formats the value using the given formatter.

impl Default for InstanceData

fn default() -> Self

Returns the “default value” for a type.

impl Copy for InstanceData