joglcolormaskstate.java

来自「java 3d game jme 工程开发源代码」· Java 代码 · 共 82 行

/*
 * Copyright (c) 2003-2009 jMonkeyEngine
 * All rights reserved.
 *
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 *
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 *   notice, this list of conditions and the following disclaimer.
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 *   may be used to endorse or promote products derived from this software
 *   without specific prior written permission.
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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package com.jme.scene.state.jogl;

import javax.media.opengl.GL;
import javax.media.opengl.glu.GLU;

import com.jme.renderer.RenderContext;
import com.jme.scene.state.ColorMaskState;
import com.jme.scene.state.jogl.records.ColorMaskStateRecord;
import com.jme.system.DisplaySystem;

/**
 *
 * <code>JOGLColorMaskState</code>
 * @author Mike Talbot
 * @author Joshua Slack - reworked for StateRecords.
 * @author Steve Vaughan - JOGL port
 * @version $Id: JOGLColorMaskState.java 4091 2009-01-21 19:01:20Z joshua.j.ellen $
 */
public class JOGLColorMaskState extends ColorMaskState {
    private static final long serialVersionUID = 1L;

    public void apply() {
        final GL gl = GLU.getCurrentGL();

        // ask for the current state record
        RenderContext<?> context = DisplaySystem.getDisplaySystem()
                .getCurrentContext();
        ColorMaskStateRecord record = (ColorMaskStateRecord) context.getStateRecord(StateType.ColorMask);
        context.currentStates[StateType.ColorMask.ordinal()] = this;

        if (isEnabled()) {
            if (!record.isValid() || !record.is(red, green, blue, alpha)) {
                gl.glColorMask(red, green, blue, alpha);
                record.set(red, green, blue, alpha);
            }
        } else if (!record.isValid() || !record.is(true, true, true, true)) {
            gl.glColorMask(true, true, true, true);
            record.set(true, true, true, true);
        }

        if (!record.isValid())
            record.validate();
    }

    @Override
    public ColorMaskStateRecord createStateRecord() {
        return new ColorMaskStateRecord();
    }
}