Facing problem to load texture image in andar?? about andar

[GoogleCodeExporter]

well when I upgraded my sample work with andar from G1 to Samsung Galaxy 9000 
my textures got white as well, I put the texture files in res/drawable-hdpi 
instead of drawable and it worked agein so maybe that's a possibility for u as 
well

Original comment by [email protected] on 21 Jul 2010 at 1:37

[GoogleCodeExporter]

and u don't use vertex coordinates so that'll be a prob for sure

that's how I do it

public void draw(GL10 gl, float x, float y, float w, float h)
    {
        float vertex[] = new float[] {
                 x - w/2, y - h/2, 0,
                 x + w/2, y - h/2, 0,
                 x - w/2, y + h/2, 0,
                 x + w/2, y + h/2, 0
            };

         float texel[] = new float[] {
                 0, 1,
                 1, 1,
                 0, 0,
                 1, 0
           };

          ByteBuffer vb = ByteBuffer.allocateDirect(vertex.length * 4);
          vb.order(ByteOrder.nativeOrder());
          FloatBuffer vertexBuffer = vb.asFloatBuffer();
          vertexBuffer.put(vertex);
          vertexBuffer.position(0);

          ByteBuffer tb = ByteBuffer.allocateDirect(texel.length * 4);
          tb.order(ByteOrder.nativeOrder());
          FloatBuffer texelBuffer = tb.asFloatBuffer();
          texelBuffer.put(texel);
          texelBuffer.position(0);

          gl.glDisable(GL10.GL_BLEND);
          gl.glEnable(GL10.GL_TEXTURE_2D);
          bindTexture(gl); // this is my own funtction but just binds an allocated tex
          gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertexBuffer);
          gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);
          gl.glTexCoordPointer(2, GL10.GL_FLOAT, 0, texelBuffer);
          gl.glEnableClientState(GL10.GL_TEXTURE_COORD_ARRAY);
          gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 0, 4);
    }

Original comment by [email protected] on 21 Jul 2010 at 7:04

[GoogleCodeExporter]

Thanks banschare for your promt reply. basically in my coding I used vertex 
coordinates.like:

        gl.glVertexPointer(3, GL10.GL_FLOAT, 0, verticesBuffer);
        gl.glNormalPointer(GL10.GL_FLOAT, 0, normalsBuffer);    
        gl.glTexCoordPointer(2, GL10.GL_FLOAT, 0, textureCoordsBuffer);
        gl.glDrawArrays(GL10.GL_TRIANGLES, 0, 6);

after that a four square drawn and also can coloring it by using 
glcolor4f..anyway i still trouble bind it with texture image.

I already tried your drawable-hdpi method but got error:

Bitmap bm = BitmapFactory.decodeResource(res, 
R.drawable-hdpi.nehe1);//error:hdpi cannot be resolved and also R.drawable 
cannot be resolved

I also tried your coding but program exit when marker detect.if i ignored 
super.draw(gl);then not exit but nonthing draw in the scree.

if you are free can you check my coiding again..i am afraid whatever i have 
decalared is right or not.like:
package edu.dhbw.andar.pub;
public class CustomObject extends ARObject {
....
....
    @Override
    public void draw (GL10) {
        super.draw(gl);
         ....
         ....
            gl.glDrawArrays(GL10.GL_TRIANGLES, 0, 6);
}
    @Override
    public void init(GL10 gl) {

        gl.glEnable(GL10.GL_TEXTURE_2D);

        gl.glGenTextures(1, textureIDs, 0);
        //load the textures into the graphics memory

        Bitmap bm = BitmapFactory.decodeResource(res, R.drawable.nehe1);
        gl.glBindTexture(GL10.GL_TEXTURE_2D, textureIDs[0]);
        //GLUtils.texImage2D(GL10.GL_TEXTURE_2D, 0, bm,0);
        gl.glTexParameterx(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MIN_FILTER, GL10.GL_LINEAR);
        gl.glTexParameterx(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MAG_FILTER, GL10.GL_LINEAR);

        bm.recycle();


    }


I think there is something mismatch my declaration/wrong in my coding.So I am 
trying to figure out.If anybody can help me I will be very much thankful...

Thanks
Rassall

Original comment by [email protected] on 22 Jul 2010 at 5:08

[GoogleCodeExporter]

have you debugged the reference of Bitmap bm is there actually a valid 
reference or is it 0, non square texture will make problems as well, so your 
texture should be for example 256x256

and why have you commented this line //GLUtils.texImage2D(GL10.GL_TEXTURE_2D, 
0, bm,0);

this is very important otherwise your bitmap doesn't get loaded in texture 
memory

best,
banschare

Original comment by [email protected] on 22 Jul 2010 at 9:53

[GoogleCodeExporter]

Thanks Banschare for continuous supporting me..

how can i can do debug to understand bitmap bm is 0 or 1?

Yes I used 256x256 texture for this case...

basically in main coding I used also

GLUtils.texImage2D(GL10.GL_TEXTURE_2D, 0, bm,0);

but still same white box texture on the marker..Even I tried to load texture in 
CustomActivity.java also  but still same result white box...such that

public class CustomActivity extends AndARActivity {

....
....
    @Override
    public void init(GL10 gl) {
        gl.glGenTextures(1, textureIDs, 0);
        Bitmap bm = BitmapFactory.decodeResource(res, R.drawable.image);
        gl.glBindTexture(GL10.GL_TEXTURE_2D, textureIDs[0]);
        GLUtils.texImage2D(GL10.GL_TEXTURE_2D, 0, bm,0);
        bm.recycle();

    }
}

For me I think the problem is the loading texture. and this line under 

public void init(GL10 gl) {

gl.glBindTexture(GL10.GL_TEXTURE_2D, textureIDs[0]);///has no effect in my 
coding

}
has no effect in my coding

So I am really not understand what is the problem here...If you are free can i 
send this application to you for check...

Thanks again..

Regards
Rassall

Original comment by [email protected] on 23 Jul 2010 at 3:53

[GoogleCodeExporter]

[deleted comment]

[GoogleCodeExporter]

Rassall,

After the execution of this line:
Bitmap bm = BitmapFactory.decodeResource(res, R.drawable.image);

you should check the value of bm to make sure it is non-zero. It is possible 
that your bitmap isn't loading correctly. 

also, have you examined the output from logcat to see if there are any errors 
in it? 

Original comment by [email protected] on 19 Aug 2010 at 1:25

[GoogleCodeExporter]

Thanks Suzyque,

Actaully I don't understand how i can check value of bm ?because in logcat 
there is no information of about bm.

Anyway I tried to load texture followed by pingpong game(Tdomahan).And now 
problem seems in following two line:

Bitmap bm = BitmapFactory.decodeResource(res, R.drawable.nehe1);
GLUtils.texImage2D(GL10.GL_TEXTURE_2D, 0, bm,0); 

If i ignore this two line then program can open and draw white cube during 
marker detection time. otherwise if use these two functions then program open 
and exit automatically.

I did not find any thing about this two line in log.cat. Anyway I have attached 
my logcat of this program.

I have attached my program also..So if you check it will very helpful for me.

Thanks

Regards
Rassall

Original comment by [email protected] on 20 Aug 2010 at 9:10

[GoogleCodeExporter]

[deleted comment]

[GoogleCodeExporter]

Thanks 

I able to solved it.

Regards
Rassall

Original comment by [email protected] on 27 Aug 2010 at 6:18

[GoogleCodeExporter]

alright so I will close this issue. It would be great if you could tell others 
what the problem was and how you solved it.
regards
tobi

Original comment by tdomhan on 2 Oct 2010 at 11:11

• Changed state: Done

[GoogleCodeExporter]

// Get a new texture id:
    private static int newTextureID(GL10 gl) {
        int[] temp = new int[1];
        gl.glGenTextures(1, temp, 0);
        return temp[0];        
    }


    private int loadTexture(GL10 gl, Context context, int resource) {       

        gl.glEnable(GL10.GL_TEXTURE_2D);

        int id = newTextureID(gl);

        Matrix flip = new Matrix();
        flip.postScale(1f, -1f);

        BitmapFactory.Options opts = new BitmapFactory.Options();
        opts.inScaled = true;

        // Load up, and flip the texture:
        //Bitmap temp = BitmapFactory.decodeResource(context.getResources(), resource, opts);
       // Bitmap bmp = Bitmap.createBitmap(temp, 0, 0, temp.getWidth(), temp.getHeight(), flip, true);
        //temp.recycle(); 

        InputStream is = context.getResources().openRawResource( resource);
        Bitmap bmp = null;
        try {           
            bmp = BitmapFactory.decodeStream(is);

        } finally {
            //Always clear and close
            try {
                is.close();
                is = null;
            } catch (IOException e) {
            }
        }

        gl.glBindTexture(GL10.GL_TEXTURE_2D, id);       

        gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MIN_FILTER, GL10.GL_LINEAR_MIPMAP_NEAREST);
        gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MAG_FILTER, GL10.GL_LINEAR_MIPMAP_NEAREST);
        gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_S, GL10.GL_REPEAT);
        gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_T, GL10.GL_REPEAT);

        int[] crop = {0, bmp.getWidth(), bmp.getHeight(), - bmp.getHeight()};

        ((GL11) gl).glTexParameteriv(GL10.GL_TEXTURE_2D, GL11Ext.GL_TEXTURE_CROP_RECT_OES, crop, 0);

        for(int level=0, height = bmp.getHeight(), width = bmp.getWidth(); true; level++) {

            GLUtils.texImage2D(GL10.GL_TEXTURE_2D, level, bmp, 0);

            if(height==1 && width==1) break;

            width >>= 1; height >>= 1;
            if(width<1)  width = 1;
            if(height<1) height = 1;

            Bitmap bmp2 = Bitmap.createScaledBitmap(bmp, width, height, true);
            bmp.recycle();
            bmp = bmp2;
        }

        bmp.recycle();

        return id;
    }
Please check this will work

Original comment by [email protected] on 11 Jan 2011 at 7:10

[GoogleCodeExporter]

Im having trouble with this section 

I finding it difficult to understand your solution did you place the load 
textures method inside your CustomObject  I'm sorta a noob at this and would 
appreciate any help with loading textures in AndAR

Original comment by [email protected] on 17 Mar 2012 at 9:58

[GoogleCodeExporter]

How are you getting the context? And where are you finally calling loadtexture? 
The problem I'm having in my project is that I need access to the projects 
Context, but I don't have access to it (at least not in my CustomOjbect class). 

Original comment by [email protected] on 23 Mar 2012 at 1:31

[GoogleCodeExporter]

Hi guys, may I see the code that is working so that I can see it in my phone, 
I'm having a problem too in adding a texture in sample cube in the project, 
help me please

Original comment by [email protected] on 27 Oct 2012 at 12:38