import { ShadowMethodBase, _Shader_ShadowMethodBase } from './ShadowMethodBase';

/**
 * ShadowHardMethod provides the cheapest shadow map method by using a single tap without any filtering.
 */
export class ShadowHardMethod extends ShadowMethodBase {
	public static assetType: string = '[asset ShadowHardMethod]';

	/**
	 * @inheritDoc
	 */
	public get assetType(): string {
		return ShadowHardMethod.assetType;
	}
}

import { ShaderRegisterCache, ShaderRegisterData, ShaderRegisterElement } from '@awayjs/stage';

import { ShaderBase } from '@awayjs/renderer';

import { LightingShader } from '../shaders/LightingShader';
import { _Shader_ShadowMapperBase } from '../mappers/ShadowMapperBase';

/**
 * _Shader_ShadowHardMethod provides the cheapest shadow map method by using a single tap without any filtering.
 */
export class _Shader_ShadowHardMethod extends _Shader_ShadowMethodBase {
	/**
     * Creates a new _Shader_ShadowHardMethod.
     */
	public init(method: ShadowHardMethod, shader: LightingShader): void {
		super.init(method, shader);
	}

	/**
     * @inheritDoc
     */
	public _getFragmentCode(targetReg: ShaderRegisterElement, registerCache: ShaderRegisterCache, sharedRegisters: ShaderRegisterData): string {
		let code: string = this._baseTexture._getFragmentCode(targetReg, registerCache, sharedRegisters, (<_Shader_ShadowMapperBase> this._baseChunk).depthMapCoordReg);

		code += super._getFragmentCode(targetReg, registerCache, sharedRegisters);

		return code;
	}
}

ShaderBase.registerAbstraction(_Shader_ShadowHardMethod, ShadowHardMethod);