org.spout.engine.renderer.shader.ShaderHelper.java Source code

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Here is the source code for org.spout.engine.renderer.shader.ShaderHelper.java

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/*
 * This file is part of Spout.
 *
 * Copyright (c) 2011-2012, SpoutDev <http://www.spout.org/>
 * Spout is licensed under the SpoutDev License Version 1.
 *
 * Spout is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * In addition, 180 days after any changes are published, you can use the
 * software, incorporating those changes, under the terms of the MIT license,
 * as described in the SpoutDev License Version 1.
 *
 * Spout is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License,
 * the MIT license and the SpoutDev License Version 1 along with this program.
 * If not, see <http://www.gnu.org/licenses/> for the GNU Lesser General Public
 * License and see <http://www.spout.org/SpoutDevLicenseV1.txt> for the full license,
 * including the MIT license.
 */
package org.spout.engine.renderer.shader;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.util.Scanner;

import org.lwjgl.opengl.GL11;
import org.lwjgl.opengl.GL20;

public class ShaderHelper {

    public static int compileShader(String source, int type) {

        int shader = GL20.glCreateShader(type);
        GL20.glShaderSource(shader, source);
        GL20.glCompileShader(shader);
        int status = GL20.glGetShader(shader, GL20.GL_COMPILE_STATUS);

        if (status != GL11.GL_TRUE) {
            String error = GL20.glGetShaderInfoLog(shader, 255);
            throw new ShaderCompileException("Compile Error in "
                    + ((type == GL20.GL_FRAGMENT_SHADER) ? "Fragment Shader" : "VertexShader") + ": " + error);
        }
        return shader;
    }

    public static String readShaderSource(String file) throws FileNotFoundException {

        FileInputStream in = new FileInputStream(file);
        Scanner scan = new Scanner(in);

        StringBuilder src = new StringBuilder();

        while (scan.hasNextLine()) {
            src.append(scan.nextLine() + "\n");
        }

        return src.toString();
    }

}