White Models

Troubleshooting graphics
1

Please,

could anyone explain to me why that when the lights are On all my models get white??? In my scene I need the Lights to be on because I have some textures, and if the light is turned off it get's dark…

thanks for the attention,

Bernardo

sorry my poor english

2

If your models turn white when lights are turned on, it is because you are using vertex colors without materials.  In OpenGL, vertex colors and lighting only go hand in hand if you use material colors.  So create a MaterialState and call it's method setColorMaterial with the argument MaterialState.CM_DIFFUSE.  Then apply it to the models that are turning white.

3

Sorry but i'm a total noobie in jme, how can I apply the materialstate to my model???



i did this :



MaterialState ms = DisplaySystem.getDisplaySystem().getRenderer().createMaterialState();

ms.setColorMaterial(MaterialState.CM_DIFFUSE);


4

yourModel.setRenderState(ms);

5

I did this but the problem continue to exist  :’( :’( :’( :cry:





MaterialState ms = DisplaySystem.getDisplaySystem().getRenderer().createMaterialState();

    ms.setColorMaterial(MaterialState.CM_DIFFUSE);

    maggie.setRenderState(ms);



i tried to put this piece of code in the HelloModelLoading and didnt work too!!!









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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

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  • "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 THE COPYRIGHT OWNER 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
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  • 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.

    */



    package jmetest.TutorialGuide;



    import java.io.ByteArrayInputStream;

    import java.io.ByteArrayOutputStream;

    import java.io.IOException;

    import java.io.OutputStreamWriter;

    import java.net.URL;

    import java.util.logging.Level;



    import com.jme.app.SimpleGame;

    import com.jme.scene.Node;

    import com.jme.scene.state.MaterialState;

    import com.jme.system.DisplaySystem;

    import com.jme.util.LoggingSystem;

    import com.jmex.model.XMLparser.BinaryToXML;

    import com.jmex.model.XMLparser.JmeBinaryReader;

    import com.jmex.model.XMLparser.Converters.FormatConverter;

    import com.jmex.model.XMLparser.Converters.ObjToJme;



    /**
  • Started Date: Jul 22, 2004<br><br>

    *
  • Demonstrates loading formats.

    *
  • @author Jack Lindamood

    */

    public class HelloModelLoading extends SimpleGame {

        public static void main(String[] args) {

            HelloModelLoading app = new HelloModelLoading();

            app.setDialogBehaviour(SimpleGame.ALWAYS_SHOW_PROPS_DIALOG);

            // Turn the logger off so we can see the XML later on

            LoggingSystem.getLogger().setLevel(Level.OFF);

            app.start();

        }



        protected void simpleInitGame() {

            // Point to a URL of my model

            URL model=HelloModelLoading.class.getClassLoader().getResource("jmetest/data/model/maggie.obj");



            // Create something to convert .obj format to .jme

            FormatConverter converter=new ObjToJme();

            // Point the converter to where it will find the .mtl file from

            converter.setProperty("mtllib",model);



            // This byte array will hold my .jme file

            ByteArrayOutputStream BO=new ByteArrayOutputStream();

            // This will read the .jme format and convert it into a scene graph

            JmeBinaryReader jbr=new JmeBinaryReader();

            // Use this to visualize the .obj file in XML

            BinaryToXML btx=new BinaryToXML();

            try {

                // Use the format converter to convert .obj to .jme

                converter.convert(model.openStream(), BO);

                // Send the .jme binary to System.out as XML

                btx.sendBinarytoXML(new ByteArrayInputStream(BO.toByteArray()),new OutputStreamWriter(System.out));



                // Tell the binary reader to use bounding boxes instead of bounding spheres

                jbr.setProperty("bound","box");

               

                // Load the binary .jme format into a scene graph

                Node maggie=jbr.loadBinaryFormat(new ByteArrayInputStream(BO.toByteArray()));

                // shrink this baby down some

                maggie.setLocalScale(.1f);

                MaterialState ms = DisplaySystem.getDisplaySystem().getRenderer().createMaterialState();

        ms.setColorMaterial(MaterialState.CM_DIFFUSE);

        maggie.setRenderState(ms);

                // Put her on the scene graph

                rootNode.attachChild(maggie);

            } catch (IOException e) {  // Just in case anything happens

                System.out.println("Damn exceptions!" + e);

                e.printStackTrace();

                System.exit(0);

            }

           

           

        }

    }















    I put it like is written up here,

    if you run it and press L (turn lights on), maggie continue becaming white!!!
6

Hi



Had the exact same issue myself, untill I RTFM :slight_smile:

yourmodel.updateRenderState();


should do the trick

HTH

Endolf
7

you probably just need an updateRenderstate()…but this is how you set different material attributes:



MaterialState ms = DisplaySystem.getDisplaySystem().getRenderer().createMaterialState();

ms.setAmbient(new ColorRGBA(0.2f, 0.2f, 0.2f, 1.0f));

ms.setDiffuse(new ColorRGBA(0.8f, 0.8f, 0.8f, 1.0f));

maggie.setRenderState(ms);

maggie.updateRenderState();





edit: damn you beat me to it :wink: