import { Device } from '../Device';
import { ShaderType } from '../enums';
import { Shader, ShaderOptions } from './Shader';
import { ShaderUniform, ShaderUniformBinding, ShaderUniformValue } from './ShaderUniform';
/**
 * Constructor options for {@link ShaderProgram}
 *
 * @public
 */
export interface ShaderProgramOptions {
    /**
     * The vertex shader to be used within the program
     *
     * @remarks
     * If it is a string it is assumed to be the source code for the vertex shader.
     * If it is an object it is assumed to be the shader options to be passed into the `Shader` constructor.
     */
    vertexShader?: string | ShaderOptions | Shader;
    /**
     * The fragment shader to be used within the program
     *
     * @remarks
     * If it is a string it is assumed to be the source code for the fragment shader.
     * If it is an object it is assumed to be the shader options to be passed into the `Shader` constructor.
     */
    fragmentShader?: string | ShaderOptions | Shader;
}
/**
 * A wrapper class around {@link https://developer.mozilla.org/en-US/docs/Web/API/WebGLProgram | WebGLProgram}
 *
 * @public
 * @remarks
 * Combines a vertex shader and a fragment shader into a shader program.
 *
 * On creation the shader source code is inspected for
 */
export declare abstract class ShaderProgram {
    /**
     * A symbol identifying the `ShaderProgramOptions` type.
     */
    static readonly OptionsSymbol: unique symbol;
    /**
     * A unique id
     */
    readonly uid: string;
    /**
     * The graphics device
     */
    abstract readonly device: Device;
    /**
     * The vertex shader
     */
    abstract readonly vertexShader: Shader;
    /**
     * The fragment shader
     */
    abstract readonly fragmentShader: Shader;
    /**
     * A map of all shader uniforms
     */
    readonly uniforms: ReadonlyMap<string, ShaderUniform>;
    private errLogs;
    abstract create(): this;
    /**
     * Releases the program handle
     */
    abstract destroy(): this;
    /**
     * Sets this program as the current program on the graphics device
     */
    bind(): this;
    /**
     * Creates a new copy of this resource
     */
    clone(): ShaderProgram;
    /**
     * Sets multiple uniform values.
     *
     * @remarks
     * Takes only known uniform names into account and ignores `null` values
     */
    setUniforms(uniforms?: {
        [key: string]: ShaderUniformValue;
    }): this;
    /**
     * Sets a value on the named uniform
     *
     * @remarks
     * `null` values are ignored
     */
    setUniform(name: string, value: ShaderUniformValue): this;
    applyBindings(bindings: ShaderUniformBinding[]): void;
    private reportMissingUniform;
    protected getShader(type: ShaderType, from: string | ShaderOptions | Shader): Shader;
}
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