Struct Instance 

#[repr(C)]
pub struct Instance {
    pub rect: [f32; 4],
    pub uv: [f32; 4],
    pub color: [f32; 4],
}

One quad, as read by the vertex shader (per-instance step mode).

A glyph has a non-empty uv rectangle; a solid rectangle has uv all zero.

Fields

rect: [f32; 4]

[x, y, width, height] in physical pixels, origin top-left.

uv: [f32; 4]

[x0, y0, x1, y1] of the glyph in the atlas, in texels (the shader normalizes).

color: [f32; 4]

Linear RGBA, not premultiplied (a Color in the shader’s layout).

Implementations

impl Instance

pub const fn solid(rect: [f32; 4], color: Color) -> Self

A filled rectangle.

pub const fn glyph(rect: [f32; 4], uv: [f32; 4], color: Color) -> Self

A glyph: uv selects its atlas cell, color tints its coverage.

pub fn is_glyph(&self) -> bool

true for glyphs, false for solid rectangles.

Trait Implementations

impl Clone for Instance

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Instance

impl Debug for Instance

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

Formats the value using the given formatter.

impl PartialEq for Instance

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Pod for Instance

impl StructuralPartialEq for Instance

impl Zeroable for Instance

fn zeroed() -> Self

Calls zeroed.