vello/piet-wgsl/shader/shared/bbox.wgsl
Elias Naur 18c0da02e5
Clarify licensing for WGSL shaders (#205)
As stated by the README, the intention is for the shaders to be
provided under the terms of the Unlicense in addition to the MIT
and Apache-2.0 licenses.

While here, add a self-contained UNLICENSE file to replace the
external reference to unlicense.org.
2022-11-19 16:45:42 +00:00

19 lines
562 B
WebGPU Shading Language

// SPDX-License-Identifier: Apache-2.0 OR MIT OR Unlicense
// The annotated bounding box for a path. It has been transformed,
// but contains a link to the active transform, mostly for gradients.
// Coordinates are integer pixels (for the convenience of atomic update)
// but will probably become fixed-point fractions for rectangles.
struct PathBbox {
x0: i32,
y0: i32,
x1: i32,
y1: i32,
linewidth: f32,
trans_ix: u32,
}
fn bbox_intersect(a: vec4<f32>, b: vec4<f32>) -> vec4<f32> {
return vec4(max(a.xy, b.xy), min(a.zw, b.zw));
}