@thi.ng/shader-ast-stdlib/screen/uv.d.ts

Function collection for modular GPGPU / shader programming with @thi.ng/shader-ast

import type { Vec2Term, Vec4Term } from "@thi.ng/shader-ast";
/**
 * Computes UV coord in `[0,1]` interval from given `fragCoord` and screen
 * `res`.
 *
 * @param fragCoord -
 * @param res -
 */
export declare const fragUV: (fragCoord: Vec4Term, res: Vec2Term) => import("@thi.ng/shader-ast").Op2<"vec2">;
/**
 * Takes `pos`, a screen coord (e.g. gl_FragCoord) and viewport resolution
 * `res`, returns aspect corrected uv, with uv.y in `[-1,1]` interval and uv.x
 * scaled by the aspect ratio `resx / resy`.
 *
 * @param fragCoord - vec2
 * @param resolution - vec2
 */
export declare const aspectCorrectedUV: import("@thi.ng/shader-ast").TaggedFn2<"vec2", "vec2", "vec2">;
/**
 * Returns true if at least one coordinate of the given point is within the
 * `width` internal border region of UV rect (`[0,0]`..`[1,1]`).
 *
 * ```c
 * borderMask(vec2(0.91, 0.5), 0.1) // true
 * borderMask(vec2(0.2, 0.01), 0.1) // true
 * borderMask(vec2(0.2, 0.2), 0.1) // false
 * ```
 */
export declare const borderMask: import("@thi.ng/shader-ast").TaggedFn2<"vec2", "float", "bool">;
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