Struct KuiDrawData 

#[repr(C)]
pub struct KuiDrawData {

    pub size: u32,
    pub quads: *const KuiQuad,
    pub quad_count: usize,
    pub viewport_w: f32,
    pub viewport_h: f32,
    pub scale: f32,
    pub atlas_pixels: *const u8,
    pub atlas_size: u32,
    pub atlas_dirty: bool,
    pub atlas_epoch: u64,
    pub fragments: *const KuiFragmentDraw,
    pub fragment_count: usize,
    pub time: f32,
    pub clips: *const KuiClip,
    pub clip_count: usize,
    pub textures: *const KuiTextureDraw,
    pub texture_count: usize,
}

The finished frame’s draw list, as kui_draw_data writes it: the quads, the clips they index, the glyph atlas to mirror as a texture, and the side lists for fragments and texture-backed images.

Everything is in physical pixels. The pointers are valid until the next kui_frame_begin on the context. An [out] struct: start from KUI_DRAW_DATA_INIT.

Fields

size: u32

[out] reservation; see KUI_DRAW_DATA_INIT.

quads: *const KuiQuad

quad_count: usize

viewport_w: f32

viewport_h: f32

scale: f32

atlas_pixels: *const u8

RGBA, atlas_size * atlas_size * 4 bytes.

atlas_size: u32

Can grow or shrink between frames: a page extended for one frame goes back to its size at the next. Size the texture to it, not to the largest seen.

atlas_dirty: bool

Re-upload the atlas texture when either of these changes/sets.

atlas_epoch: u64

fragments: *const KuiFragmentDraw

One per KUI_QUAD_FRAGMENT quad, indexed by its uv[0]; null and zero on a frame that draws none. Added in ABI 9.

fragment_count: usize

time: f32

The frame clock in seconds, for a fragment’s time.

clips: *const KuiClip

The clips the quads index through KuiQuad::clip. Never empty on a frame that drew anything: entry zero clips nothing. Added in ABI 11.

clip_count: usize

textures: *const KuiTextureDraw

One per KUI_QUAD_TEXTURE quad, indexed by its uv[0]; null and zero on a frame that draws none. Added in ABI 14.

texture_count: usize

Trait Implementations

impl Default for KuiDrawData

fn default() -> Self

Returns the “default value” for a type.