import { AbstractShaderNode } from '../core/AbstractShaderNode';
/**
 * A shader node that provides access to the projection matrix in shaders.
 * This node outputs a 4x4 projection matrix that can be used for transforming
 * vertices from view space to clip space in the vertex shader.
 *
 * @extends AbstractShaderNode
 */
export declare class ProjectionMatrixShaderNode extends AbstractShaderNode {
    /**
     * Creates a new ProjectionMatrixShaderNode instance.
     * Initializes the shader node with projection matrix shader code for both
     * OpenGL (GLSL) and WebGPU (WGSL) backends, and configures the output
     * to provide a 4x4 float matrix.
     */
    constructor();
}