Struct ClipParamsGpu

#[repr(C)]
pub struct ClipParamsGpu {
    pub rect: [f32; 4],
    pub radius: f32,
    pub mode: u32,
    pub _pad: u32,
    pub _struct_pad: u32,
}

Uniform block for clip_alpha in WGSL (32 bytes, 16-byte aligned).

Examples

use ailloli_ui_render_wgpu::clip::ClipParamsGpu;
assert_eq!(std::mem::size_of::<ClipParamsGpu>(), 32);

Fields

rect: [f32; 4]

Physical [x, y, width, height] bounding rectangle.

radius: f32

Rounded-corner radius in physical pixels; zero for rectangles and no clip.

mode: u32

Shader discriminator, one of MODE_NONE, MODE_RECT, or MODE_ROUND.

_pad: u32

Explicit alignment padding; always zero.

_struct_pad: u32

Struct tail padding (WGSL expects 32 bytes, not 28).

Implementations

impl ClipParamsGpu

pub const MODE_NONE: u32 = 0u32

Shader mode for an inactive clip.

Examples

use ailloli_ui_render_wgpu::clip::ClipParamsGpu;
assert_eq!(ClipParamsGpu::MODE_NONE, 0);

pub const MODE_RECT: u32 = 1u32

Shader mode for an axis-aligned rectangle.

Examples

use ailloli_ui_render_wgpu::clip::ClipParamsGpu;
assert_eq!(ClipParamsGpu::MODE_RECT, 1);

pub const MODE_ROUND: u32 = 2u32

Shader mode for a rounded rectangle.

Examples

use ailloli_ui_render_wgpu::clip::ClipParamsGpu;
assert_eq!(ClipParamsGpu::MODE_ROUND, 2);

pub fn none() -> Self

Creates the zeroed inactive uniform block.

Examples

use ailloli_ui_render_wgpu::clip::ClipParamsGpu;
let params = ClipParamsGpu::none();
assert_eq!((params.mode, params.radius), (ClipParamsGpu::MODE_NONE, 0.0));

pub fn from_shape(shape: &ClipShape, dpr: f32) -> Self

Converts a logical clip shape to its physical-pixel shader parameters.

Every coordinate and the rounded radius are multiplied by dpr without clamping. Callers are responsible for a finite positive scale.

Examples

use ailloli_ui_core::{ClipShape, Rect};
use ailloli_ui_render_wgpu::clip::ClipParamsGpu;
let params = ClipParamsGpu::from_shape(
    &ClipShape::Rect(Rect::new(1.0, 2.0, 3.0, 4.0)), 2.0);
assert_eq!(params.rect, [2.0, 4.0, 6.0, 8.0]);
assert_eq!(params.mode, ClipParamsGpu::MODE_RECT);

Trait Implementations

impl Clone for ClipParamsGpu

fn clone(&self) -> ClipParamsGpu

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ClipParamsGpu

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

Formats the value using the given formatter.

impl Zeroable for ClipParamsGpu

fn zeroed() -> Self

Calls zeroed.

impl Copy for ClipParamsGpu

impl Pod for ClipParamsGpu