/*
 * Copyright 2014 MovingBlocks
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.terasology.engine.subsystem.headless.assets;

import org.terasology.assets.AssetType;
import org.terasology.assets.ResourceUrn;
import org.terasology.rendering.assets.shader.Shader;
import org.terasology.rendering.assets.shader.ShaderData;
import org.terasology.rendering.assets.shader.ShaderParameterMetadata;

import java.util.Collections;

public class HeadlessShader extends Shader {

    private ShaderData shaderProgramBase;

    public HeadlessShader(ResourceUrn urn, AssetType<?, ShaderData> assetType, ShaderData data) {
        super(urn, assetType);
        reload(data);
    }

    @Override
    public void recompile() {
        // do nothing
    }

    @Override
    public ShaderParameterMetadata getParameter(String desc) {
        return null;
    }

    @Override
    public Iterable<ShaderParameterMetadata> listParameters() {
        return Collections.emptyList();
    }

    @Override
    protected void doReload(ShaderData data) {
        shaderProgramBase = data;
    }

}