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/*
 * Copyright 2012 JogAmp Community. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are
 * permitted provided that the following conditions are met:
 *
 *    1. Redistributions of source code must retain the above copyright notice, this list of
 *       conditions and the following disclaimer.
 *
 *    2. Redistributions in binary form must reproduce the above copyright notice, this list
 *       of conditions and the following disclaimer in the documentation and/or other materials
 *       provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * The views and conclusions contained in the software and documentation are those of the
 * authors and should not be interpreted as representing official policies, either expressed
 * or implied, of JogAmp Community.
 */
package com.metsci.glimpse.jogamp.opengl.util.awt.text;

import com.jogamp.opengl.GL;
import com.jogamp.opengl.GL2;
import com.jogamp.opengl.GL3;
import com.jogamp.opengl.GLExtensions;
import com.jogamp.opengl.GLProfile;

/**
 * Utility for working with {@link QuadPipeline}'s.
 */
/*ThreadSafe*/
public final class QuadPipelines
{

    /**
     * Prevents instantiation.
     */
    private QuadPipelines( )
    {
        // pass
    }

    /**
     * Creates a {@link QuadPipeline} based on the current OpenGL context.
     *
     * @param gl Current OpenGL context
     * @param program Shader program to use, or zero to use default
     * @return New quad pipeline for the version of OpenGL in use, not null
     * @throws NullPointerException if context is null
     * @throws IllegalArgumentException if shader program is negative
     * @throws UnsupportedOperationException if GL is unsupported
     */
    /*@Nonnull*/
    public QuadPipeline get( /*@Nonnull*/ final GL gl, /*@Nonnegative*/ final int program )
    {

        Check.notNull( gl, "Context cannot be null" );
        Check.argument( program >= 0, "Program cannot be negative" );

        final GLProfile profile = gl.getGLProfile( );

        if ( profile.isGL3( ) )
        {
            final GL3 gl3 = gl.getGL3( );
            return new QuadPipelineGL30( gl3, program );
        }
        else if ( profile.isGL2( ) )
        {
            final GL2 gl2 = gl.getGL2( );
            if ( gl2.isExtensionAvailable( GLExtensions.VERSION_1_5 ) )
            {
                return new QuadPipelineGL15( gl2 );
            }
            else if ( gl2.isExtensionAvailable( "GL_VERSION_1_1" ) )
            {
                return new QuadPipelineGL11( );
            }
            else
            {
                return new QuadPipelineGL10( );
            }
        }
        else
        {
            throw new UnsupportedOperationException( "Profile currently unsupported" );
        }
    }
}