export declare const gBufferReadMixin: {
    defines: {};
    uniforms: {
        gBufferTexture1: {
            type: "sampler2D";
            value: import("../../../Texture2D").default;
            semantic: import("../../../Shader").UniformSemantic | import("../../../Shader").MatrixSemantic | undefined;
        };
        gBufferTexture2: {
            type: "sampler2D";
            value: import("../../../Texture2D").default;
            semantic: import("../../../Shader").UniformSemantic | import("../../../Shader").MatrixSemantic | undefined;
        };
        gBufferTexture3: {
            type: "sampler2D";
            value: import("../../../Texture2D").default;
            semantic: import("../../../Shader").UniformSemantic | import("../../../Shader").MatrixSemantic | undefined;
        };
        windowSize: {
            type: "vec2";
            semantic: "WINDOW_SIZE";
        };
        viewport: {
            type: "vec4";
            semantic: "VIEWPORT";
        };
        viewProjectionInv: {
            type: "mat4";
            value: import("../../../glmatrix/common").Mat4Array;
            semantic: import("../../../Shader").UniformSemantic | import("../../../Shader").MatrixSemantic | undefined;
        };
    };
    attributes: {};
    varyings: {};
    functions: ((functionName?: string) => string)[];
    main: string;
};
export declare const lightEquationFunction: {
    (functionName?: string): string;
    displayName: string | undefined;
};