Hi Kelvin,
I am sorry, that I did not point out clearly, that I was refering to
the USE_COORD_INDEX_ONLY topic.
In the meantime I have tested this program on another machine with a
Geforce2 graphics board and found out that I cannot reproduce the bug
there. So it seems to be a hardware issue. The machines where I can
detect the error have a Voodoo3 and a Matrox G400 board installed.
To make clear, what I am talking about, I have attached a small
screenshot of how it looks like on the machine with the G400.
Regards,
Ingo
> The new test program add both shape3d in both g1 and g2
>so there is no different which child to select. It always show
>two shape under v1.2.1, v1.3 and the next v1.3.1 beta1 release.
>
>As mention previously the transparency bug is already fixed in next release.
>Stay tuned.
>
>- Kelvin
>---------------
>Java 3D Team
>Sun Microsystems Inc.
>
>
>Ingo Brunberg wrote:
>> Hi Kelvin,
>>
>> I slightly modified the test program and finally managed to get it to
>> demonstrate the problem. I am not quite happy with this one, since it
>> uses cloneTree(), so you might think it is a cloneTree() bug, but
>> maybe it is enough to get started.
>>
>> Regards,
>> Ingo
>>
>>
>>>Hi Ingo,
>>>
>>> This first one is bug
>>>4713671 - Problem with Transparency sorting on Switch group
>>>
>>>which is fixed in next v1.3.1 beta release.
>>>I just test that this test program works fine.
>>>For the second one we need a test case to investigate.
>>>
>>>Thanks.
>>>
>>>- Kelvin
>>>----------
>>>Java 3D Team
>>>Sun Microsystems Inc.
>>>
>>>
>>>Ingo Brunberg wrote:
>>>
>>>>Hello,
>>>>
>>>>I noticed that two of the bugs I once reported against the first beta
>>>>of Java 3D 1.3 are still present in the fcs version.
>>>>
>>>>1) Use of TRANSPARENCY_SORT_GEOMETRY (a transparency sorting policy):
>>>> There are rendering artifacts with transparent objects if they are
>>>> switched off. This is demonstrated with the following test
>>>> program. This shows a triangle which, after 5 seconds, is replaced
>>>> with a translated one. You can see that the first triangle remains
>>>> visible although it should become completely invisible.
>>>>
>>>>2) Use of USE_COORD_INDEX_ONLY in IndexedTriangleArrays with per
>>>> vertex colors present:
>>>> The vertex colors are ignored during rendering, that means you just
>>>> see a white object. I tried to demonstrate this with the test
>>>> program, too, but this bug seems only to be observable in more
>>>> complex scenes or with more complex geometries.
>>>
>>
>> ----------------------------------------------------------------------
>> import javax.swing.JFrame;
>> import javax.media.j3d.*;
>> import javax.vecmath.*;
>> import com.sun.j3d.utils.universe.*;
>> import java.util.Timer;
>> import java.util.TimerTask;
>>
>> public class Test extends JFrame {
>> public Test() {
>> Canvas3D canvas = new Canvas3D(
>> SimpleUniverse.getPreferredConfiguration());
>> SimpleUniverse universe = new SimpleUniverse(canvas);
>> universe.addBranchGraph(createSceneGraph());
>> //universe.getViewer().getView().setTransparencySortingPolicy(
>> //View.TRANSPARENCY_SORT_GEOMETRY);
>>
>> Transform3D vpLocation = new Transform3D();
>> TransformGroup vptg = universe.getViewingPlatform(
>> ).getViewPlatformTransform();
>> vptg.getTransform(vpLocation);
>> vpLocation.setTranslation(new Vector3d(0.0, 0.0, 8.0));
>> vptg.setTransform(vpLocation);
>> canvas.setSize(300, 300);
>> getContentPane().add(canvas);
>> setDefaultCloseOperation(EXIT_ON_CLOSE);
>> pack();
>> }
>>
>> public static void main(String[] args) {
>> Test frame = new Test();
>> frame.show();
>> }
>>
>> private BranchGroup createSceneGraph() {
>> BranchGroup branch = new BranchGroup();
>>
>> final Switch sg = new Switch(0);
>> sg.setCapability(Switch.ALLOW_SWITCH_WRITE);
>> branch.addChild(sg);
>>
>> DirectionalLight light = new DirectionalLight();
>> light.setInfluencingBounds(new BoundingSphere(new Point3d(), 1000));
>> branch.addChild(light);
>>
>> // Add a Background
>> Background background = new Background(new Color3f(1.0f, 1.0f, 1.0f));
>> background.setApplicationBounds(new BoundingSphere(new Point3d(),
>> 1000));
>> branch.addChild(background);
>>
>> Appearance app = new Appearance();
>> app.setMaterial(new Material());
>> app.setTransparencyAttributes(
>> new TransparencyAttributes(TransparencyAttributes.NICEST, 0.5f));
>>
>> Transform3D t3d1 = new Transform3D();
>> t3d1.setTranslation(new Vector3f(-1.0f, 0.0f, 0.0f));
>> Transform3D t3d2 = new Transform3D();
>> t3d2.setTranslation(new Vector3f(1.0f, 0.0f, 0.0f));
>> TransformGroup t1 = new TransformGroup(t3d1);
>> TransformGroup t2 = new TransformGroup(t3d2);
>>
>> Group g1 = new Group();
>> Group g2 = new Group();
>>
>> t1.addChild(new Shape3D(createTriangleArray(), app));
>> t2.addChild(new Shape3D(createTriangleArray(), app));
>> g1.addChild(t1);
>> g1.addChild(t2);
>> g2.addChild(t1.cloneTree());
>> g2.addChild(t2.cloneTree());
>> sg.addChild(g1);
>> sg.addChild(g2);
>>
>> new Timer().schedule(new TimerTask() {
>> public void run() {
>> sg.setWhichChild(1);
>> }
>> }, 5000l);
>>
>> //branch.compile();
>> return branch;
>> }
>>
>> private IndexedTriangleArray createTriangleArray() {
>> int vertexFormat = GeometryArray.COORDINATES | GeometryArray.NORMALS
>> | GeometryArray.COLOR_3 | GeometryArray.USE_COORD_INDEX_ONLY;
>> IndexedTriangleArray geom = new IndexedTriangleArray(
>> 3, vertexFormat, 3);
>> geom.setCoordinates(0, new float[] {-1, 0, 0, 1, 0, 0, 0, 2, 0});
>> geom.setColors(0, new float[] {1, 0, 0, 0, 1, 0, 0, 0, 1});
>> geom.setNormals(0, new float[] {-0.6f, 0, 0.8f, 0.6f, 0, 0.8f, 0, 0.6f,
>> 0.8f});
>> int[] indices = new int[] {0, 1, 2};
>> geom.setCoordinateIndices(0, indices);
>> //geom.setColorIndices(0, indices);
>> //geom.setNormalIndices(0, indices);
>> //geom.setDuplicateOnCloneTree(true);
>> return geom;
>> }
>> }
begin 644 Test.png
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end
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