www.jpct.net

When I use

object3D.setAdditionalColor(SOME_COLOR);
object3D.setShadingMode(Object3D.SHADING_FAKED_FLAT);
object3D.setTransparency(0);
object3D.setCulling(false);

in software mode, everything is rendered transparent, but just black. Is this something that could be fixed without too much effort?

Thank you,
aZen

Edit: Edited the title to reflect the problem better.

And without transparency being used...?

Oh... it's also black.

So the culling is the problem?

It might be, if you are looking into the model. But then you should get the same effect without flat shading. Do you?

I've created a minimal test cast:

package vitco;

import com.threed.jpct.*;

import javax.swing.*;
import java.awt.*;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

/**
* Testing problem where object is rendered black.
*/
public class BlackJPCT extends WindowAdapter implements MouseMotionListener {
    static FrameBuffer buffer;
    static World world;
    Object3D box;
    JFrame frame;

    public BlackJPCT() {
        // set up frame
        frame = new JFrame("Hello Black!");
        frame.setSize(800, 600);
        frame.setVisible(true);
        frame.setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);

        // set up world
        world = new World();
        world.setAmbientLight(0, 0, 0);
        world.addLight( new SimpleVector(500,-500,500), new Color(20,20,20) );
        Config.fadeoutLight = false;

        // ==========================

        box = Primitives.getBox(10f, 1f);

        box.setAdditionalColor(Color.RED);

        // ###############################
        // ###############################
        // if I comment out either of these two lines
        // the object is no longer rendered as black
        box.setShadingMode(Object3D.SHADING_FAKED_FLAT);
        box.setCulling(false);
        // ###############################
        // ###############################
       
        box.build();

        world.addObject(box);

        // ==========================

        // set up camera
        world.getCamera().setPosition(50, -50, -5);
        world.getCamera().lookAt(SimpleVector.ORIGIN);

        // set up frame buffer
        buffer = new FrameBuffer(800, 600, FrameBuffer.SAMPLINGMODE_NORMAL);

        // set up event handler
        frame.addMouseMotionListener(this);
        frame.addWindowListener(this);
    }

    @Override
    public void windowClosing(WindowEvent e) {
        // clean up when closing
        buffer.disableRenderer(IRenderer.RENDERER_OPENGL);
        buffer.dispose();
        frame.dispose();
        System.exit(0);
    }

    @Override
    public void mouseDragged(MouseEvent e) {}

    @Override
    public void mouseMoved(MouseEvent e) {
        box.rotateY(0.01f);
        // animate and redraw
        buffer.clear(Color.LIGHT_GRAY);
        world.renderScene(buffer);
        world.draw(buffer);
        buffer.update();
        buffer.display(frame.getGraphics());
    }

    // constructor
    public static void main (String[] args) {
        new BlackJPCT();
    }
}


The essence from that test case:
// if I comment out either of these two lines
// the object is no longer rendered as black
box.setShadingMode(Object3D.SHADING_FAKED_FLAT);
box.setCulling(false);

Thank you for your help!

It's a bug, thank you for the test case. This jar should fix it: http://jpct.de/download/beta/jpct.jar (http://jpct.de/download/beta/jpct.jar)

It's fixed! Thank you!