import type { Vec4Sym } from "@thi.ng/shader-ast/api/syms";
export declare const m22ToM33: import("@thi.ng/shader-ast").TaggedFn1<"mat2", "mat3">;
export declare const m33ToM44: import("@thi.ng/shader-ast").TaggedFn1<"mat3", "mat4">;
/**
 * Applies perpspective divide on given vector, i.e. `v.xyz / v.w`.
 *
 * @param v
 */
export declare const perspectiveDivide: (v: Vec4Sym) => import("@thi.ng/shader-ast").Op2<"vec3">;
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