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LIBGDX Healthbar not showing up

I'm making a game as a small project.
I want to add 2 healthbars(2 players one for each player)
I got an hud where I want to put a healthbar now its a number, which is doll. In the picture below the black box is the HUD.
I found this on here on the site but doesnt work.
SpriteBatch batch;
Texture texture, texture2;
#Override
public void create() {
batch = new SpriteBatch();
initTestObjects();
}
#Override
public void render() {
Gdx.gl.glClearColor(0, 0, 0, 0);
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
batch.begin();
batch.draw(texture, 10, 10, 3000, 20);
batch.draw(texture2, 10, 10, 2500, 20);
//batch.end();
}
private void initTestObjects() {
int width = 1;
int height = 1;
Pixmap pixmap = createProceduralPixmap(width, height, 255, 1, 0);
Pixmap pixmap2 = createProceduralPixmap(width, height, 255, 255, 0);
texture = new Texture(pixmap);
texture2 = new Texture(pixmap2);
}
private Pixmap createProceduralPixmap(int width, int height, int r, int g, int b) {
Pixmap pixmap = new Pixmap(width, height, Format.RGBA8888);
pixmap.setColor(r, g, b, 1);
pixmap.fill();
return pixmap;
}
as you can see https://www.dropbox.com/s/r1qnwruyr2c1k5h/NoHP.PNG?dl=0 there is no hp drawn.
The rest of the code of the class. http://pastebin.com/AqNFarZ1
Thanks in before hand :)

Android OpenGL ES 2.0: Text aren't showing up

I have adapted the code from Draw Text in OpenGL ES Android into my app, but the text isn't really showing up.
Here's what it currently looks like:
The green rectangle box is actually a Drawable bitmap.
I am expecting some sort of text, either white or black on top of the background, but nothing is ever showing up.
Here's the code for the Text class.
package gl.es;
import java.nio.*;
import android.content.Context;
import android.graphics.*;
import android.graphics.drawable.Drawable;
import android.opengl.*;
import android.opengl.Matrix;
public class Text {
public int textTexture;
public FloatBuffer textFloatBuffer;
public FloatBuffer textureFloatBuffer;
public int bufferSize;
public int program;
private final int textWidth = 112;
private final int textHeight = 16;
//private float posX;
private int aTextPositionLocation;
private int aTexturePositionLocation;
private int uMatrixLocation;
private int uTextureUnitLocation;
public Text(Context context) {
program = Shader.buildProgram(context, R.raw.text_vert, R.raw.text_frag);
aTextPositionLocation = GLES20.glGetAttribLocation(program, "a_textPosition");
aTexturePositionLocation = GLES20.glGetAttribLocation(program, "a_texturePosition");
uMatrixLocation = GLES20.glGetUniformLocation(program, "u_matrix");
uTextureUnitLocation = GLES20.glGetUniformLocation(program, "u_textureUnit");
textTexture = createTexture(context);
setBuffer();
//posX = 0f;
}
public int createTexture(Context context) {
//Create empty mutable bitmap.
Bitmap bitmap = Bitmap.createBitmap(textWidth, textHeight, Bitmap.Config.ARGB_8888);
//Use Canvas to paint over it.
Canvas canvas = new Canvas(bitmap);
bitmap.eraseColor(0);
//Draw background
Drawable background = context.getResources().getDrawable(R.drawable.text_bg);
background.setBounds(0, 0, 112, 16);
background.draw(canvas);
//Draw text
Paint textPaint = new Paint();
textPaint.setTextSize(6f);
textPaint.setAntiAlias(false);
textPaint.setARGB(0xff, 0, 0, 0);
//Draw text centered.
canvas.drawText("Text.", 0, 0, textPaint);
int[] texture = new int[1];
GLES20.glGenTextures(1, texture, 0);
GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, texture[0]);
GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MAG_FILTER, GLES20.GL_LINEAR);
GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_MIN_FILTER, GLES20.GL_LINEAR);
GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_S, GLES20.GL_REPEAT);
GLES20.glTexParameteri(GLES20.GL_TEXTURE_2D, GLES20.GL_TEXTURE_WRAP_T, GLES20.GL_REPEAT);
GLUtils.texImage2D(GLES20.GL_TEXTURE_2D, 0, bitmap, 0);
//Recycle.
bitmap.recycle();
return texture[0];
}
public void setBuffer() {
final float[] vertexData = {
0f, 0f,
textWidth, 0f,
0f, textHeight,
0f, textHeight,
textWidth, 0f,
textWidth, textHeight
};
final float[] texData = {
0f, 1f,
1f, 1f,
0f, 0f,
0f, 0f,
1f, 1f,
1f, 0f
};
textFloatBuffer = ByteBuffer.allocateDirect(vertexData.length * 4).order(ByteOrder.nativeOrder()).asFloatBuffer();
textFloatBuffer.put(vertexData);
textureFloatBuffer = ByteBuffer.allocateDirect(texData.length * 4).order(ByteOrder.nativeOrder()).asFloatBuffer();
textureFloatBuffer.put(texData);
bufferSize = vertexData.length / 2;
}
public void transform(float[] model, float[] projection, float[] mvp) {
Matrix.setIdentityM(model, 0);
Matrix.translateM(model, 0, 0f, 0f, -60f);
Matrix.translateM(model, 0, -60f, 0f, 0f);
Matrix.multiplyMM(mvp, 0, projection, 0, model, 0);
//posX = (posX - 0.3f) % 112f;
}
public void setVertexPointers() {
textFloatBuffer.position(0);
GLES20.glVertexAttribPointer(aTextPositionLocation, 2, GLES20.GL_FLOAT, false, 2 * 4, textFloatBuffer);
GLES20.glEnableVertexAttribArray(aTextPositionLocation);
textFloatBuffer.position(0);
textureFloatBuffer.position(0);
GLES20.glVertexAttribPointer(aTexturePositionLocation, 2, GLES20.GL_FLOAT, false, 2 * 4, textureFloatBuffer);
GLES20.glEnableVertexAttribArray(aTexturePositionLocation);
textureFloatBuffer.position(0);
}
public void draw() {
GLES20.glDrawArrays(GLES20.GL_TRIANGLES, 0, bufferSize);
}
public void useProgram() {
GLES20.glUseProgram(program);
}
public void setUniforms(float[] matrix) {
GLES20.glUniformMatrix4fv(uMatrixLocation, 1, false, matrix, 0);
GLES20.glActiveTexture(GLES20.GL_TEXTURE1);
GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, textTexture);
GLES20.glUniform1i(uTextureUnitLocation, 1);
}
}
Could someone tell me where I'm doing wrong? What should I do in order to fix this? Thanks in advance.
UPDATE 1:
To answer deathember:
This is what happens when I changed the Matrix.transformM() to what you have suggested:
And here's the code that shows where I put my view matrix at:
package gl.es;
import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.opengles.GL10;
import android.content.Context;
import android.opengl.*;
public class MyRenderer implements GLSurfaceView.Renderer
{
Context context;
Text text;
float eyeX;
float eyeY;
float eyeZ;
private float[] modelMatrix;
private float[] viewMatrix;
private float[] projectionMatrix;
private float[] modelViewProjectionMatrix;
public MyRenderer(Context context) {
this.context = context;
modelMatrix = new float[16];
projectionMatrix = new float[16];
viewMatrix = new float[16];
modelViewProjectionMatrix = new float[16];
}
#Override
public void onSurfaceCreated(GL10 p1, EGLConfig config)
{
// TODO: Implement this method
GLES20.glClearColor(0.4f, 0.8f, 1.0f, 1.0f);
this.text = new Text(this.context);
}
#Override
public void onSurfaceChanged(GL10 p1, int width, int height)
{
// TODO: Implement this method
GLES20.glViewport(0, 0, width, height);
this.setPerspectiveM(45f, (float) (width) / (float) (height), 1f, 200f);
// Did not use view matrix at all for transformations of Text textures.
Matrix.setLookAtM(viewMatrix, 0, 0, 0, 0, 0, 0, 0, 0, 1f, 0); //Unused.
Matrix.setIdentityM(modelMatrix, 0);
projectionMatrix, 0, modelMatrix, 0);
}
#Override
public void onDrawFrame(GL10 p1)
{
// TODO: Implement this method
GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT);
text.transform(modelMatrix, projectionMatrix, modelViewProjectionMatrix);
text.useProgram();
text.setUniforms(modelViewProjectionMatrix);
text.setVertexPointers();
text.draw();
}
private void setPerspectiveM(float fov, float aspectRatio, float near, float far) {
final float anglesInRadians = (float) (fov * Math.PI / 180f);
final float angle = (float) (1f / Math.atan(anglesInRadians) / 2f);
projectionMatrix[0] = angle / aspectRatio;
projectionMatrix[1] = 0f;
projectionMatrix[2] = 0f;
projectionMatrix[3] = 0f;
projectionMatrix[4] = 0f;
projectionMatrix[5] = angle;
projectionMatrix[6] = 0f;
projectionMatrix[7] = 0f;
projectionMatrix[8] = 0f;
projectionMatrix[9] = 0f;
projectionMatrix[10] = -((far + near) / (far - near));
projectionMatrix[11] = -1f;
projectionMatrix[12] = 0f;
projectionMatrix[13] = 0f;
projectionMatrix[14] = -((2f * far * near) / (far - near));
projectionMatrix[15] = 0f;
}
}
Hope that helps.

Try to change
public void transform(float[] model, float[] projection, float[] mvp) {
Matrix.setIdentityM(model, 0);
Matrix.translateM(model, 0, 0f, 0f, -60f);
Matrix.translateM(model, 0, -60f, 0f, 0f);
Matrix.multiplyMM(mvp, 0, projection, 0, model, 0);
//posX = (posX - 0.3f) % 112f;
}
into
public void transform(float[] model, float[] projection, float[] mvp) {
Matrix.setIdentityM(model, 0);
Matrix.translateM(model, 0, 0f, 0f, 0f);
Matrix.multiplyMM(mvp, 0, projection, 0, model, 0);
//posX = (posX - 0.3f) % 112f;
}
And also set your view matrix look at center. May be you draw your text, but you can't see him. And where you set view matrix?

Add true inside view.getDrawingCache() as a parameter.
Note that on some devices and hardwares, this will never work. I found this out the hard way.

OpenGL ES 2.0 doesn't draw anything

I have a problem with OpenGl ES 2.0. I've designed a very simple framework to help me load OBJ files and draw them on my Android phone, but I have 2 bugs that I haven't been able to fix:
My app doesn't show anything until I change the orientation and the Activity gets scraped and reloaded. Until it reloads only GLES20.glClear() can be seen(I've set it to a grayish color).
Sometimes when I load an OBJ and do the orientation trick, half of my faces are missing and I see gaps, but the problem might be with the OBJ files I've used.
package com.ideas.opengl;
import java.io.IOException;
import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.opengles.GL10;
import android.opengl.GLES20;
import android.opengl.GLSurfaceView.Renderer;
import android.opengl.Matrix;
public class DemoRenderer implements Renderer {
public static int mProgramHandle;
private int mMVPMatrixHandle;
private float[] mModelMatrix = new float[16];
private float[] mViewMatrix = new float[16];
private float[] mProjectionMatrix = new float[16];
private float[] mMVPMatrix = new float[16];
public Object banana;
private OpenGLDemoActivity activity;
private int angle;
public DemoRenderer(OpenGLDemoActivity activity) throws IOException {
this.activity = activity;
}
#Override
public void onSurfaceCreated(GL10 gl, EGLConfig config){
GLES20.glClearColor(0.65f, 0.65f, 0.65f, 0.65f);
//GLES20.glEnable(GLES20.GL_CULL_FACE);
GLES20.glEnable(GLES20.GL_DEPTH_TEST);
GLES20.glEnable(GLES20.GL_TEXTURE_2D);
Shader shader = null;
try {
shader = new Shader(activity, "simple");
} catch (IOException e) {
e.printStackTrace();
}
Vector position = new Vector();
Vector speed = new Vector();
Vector accel = new Vector();
Model model = null;
try {
model = new Model("banana", activity);
} catch (IOException e) {
e.printStackTrace();
}
banana = new Object(position, speed, accel, model);
mProgramHandle = shader.getProgramHandle();
final float eyeX = 0.0f;
final float eyeY = 0.0f;
final float eyeZ = 3.5f;
final float lookX = 0.0f;
final float lookY = 0.0f;
final float lookZ = -5.0f;
final float upX = 0.0f;
final float upY = 1.0f;
final float upZ = 0.0f;
Matrix.setLookAtM(mViewMatrix, 0, eyeX, eyeY, eyeZ, lookX, lookY, lookZ, upX, upY, upZ);
mMVPMatrixHandle = GLES20.glGetUniformLocation(mProgramHandle, "u_MVPMatrix");
}
#Override
public void onSurfaceChanged(GL10 gl, int width, int height) {
GLES20.glViewport(0, 0, width, height);
final float ratio = (float) width / height;
final float left = -ratio;
final float right = ratio;
final float bottom = -1.0f;
final float top = 1.0f;
final float near = 1.0f;
final float far = 10.0f;
Matrix.frustumM(mProjectionMatrix, 0, left, right, bottom, top, near, far);
}
#Override
public void onDrawFrame(GL10 gl) {
GLES20.glClear(GLES20.GL_DEPTH_BUFFER_BIT | GLES20.GL_COLOR_BUFFER_BIT);
angle++;
Matrix.setIdentityM(mModelMatrix, 0);
Matrix.rotateM(mModelMatrix, 0, angle, 0.0f, 1.0f, 1.0f);
Matrix.multiplyMM(mMVPMatrix, 0, mViewMatrix, 0, mModelMatrix, 0);
Matrix.multiplyMM(mMVPMatrix, 0, mProjectionMatrix, 0, mMVPMatrix, 0);
GLES20.glUniformMatrix4fv(mMVPMatrixHandle, 1, false, mMVPMatrix, 0);
banana.draw();
}
}
`

Tried some glGetError() and got to errors, one regarding a variable that had its value unchanged and another was that glGetAttributeLocation() return a -1 if the attribute is not used in the vertex shader. Thaks for the help!

The problem with the geometry is likely due to using the same float array for input and output in the matrix multiplication:
Matrix.multiplyMM(mMVPMatrix, 0, mProjectionMatrix, 0, mMVPMatrix, 0);
According to the multiplyMM() specs the input and output arrays may not have overlapping elements, but you use the same array mMVPMatrix starting with the same index 0. One way to fix the problem is to use another matrix as a buffer for the result of the last multiplication, so instead of:
Matrix.multiplyMM(mMVPMatrix, 0, mProjectionMatrix, 0, mMVPMatrix, 0);
GLES20.glUniformMatrix4fv(mMVPMatrixHandle, 1, false, mMVPMatrix, 0);
use:
Matrix.multiplyMM(mMatrixFinal, 0, mProjectionMatrix, 0, mMVPMatrix, 0);
GLES20.glUniformMatrix4fv(mMVPMatrixHandle, 1, false, mMatrixFinal, 0);

OpenGL ES Object is Displaying Strangely / Distorted - Android

EDIT OK - I grabbed a device and..guess what...it displays correctly ? Does anyone know why this would be happening on the simulator only ? Thank you.
I am trying to draw an object using glDrawElements on Android. I am using the code below to read in my vertice and indice data and then draw the object in my render method. I am testing this on the simulator rather than a real device.
This is my scene object code :
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.FloatBuffer;
import java.nio.IntBuffer;
import java.nio.ShortBuffer;
import javax.microedition.khronos.opengles.GL10;
public class SceneObject {
public FloatBuffer mVertexBuffer;
public FloatBuffer mTextureBuffer;
public ShortBuffer indexBuffer;
public FloatBuffer mMatriceBuffer;
public FloatBuffer mPivotBuffer;
public short[] indicesTest = {0,1,2,3,4,5,3,5,6,7,5,8,7,8,9,10,7,9,11,10,9,12,1,0,13,12,14,15,13,14,14,10,11,15,14,11,0,14,12,16,17,18,19,16,18,18,20,19,21,16,19,22,21,19,22,19,23,4,24,25,25,26,27,25,27,28,4,25,28,5,4,28,5,28,8,29,30,31,29,31,19,29,19,20,32,33,31,32,31,30,32,34,33,35,22,23,36,35,23,37,36,23,37,23,38,39,37,38,40,39,38,41,40,38,41,38,1,42,41,1,12,43,1,42,1,43,17,27,26,26,18,17,44,45,46,46,47,44,48,49,50,51,52,53,53,54,51,55,51,54,54,56,55,57,48,50,50,58,57,52,59,60,60,53,52,59,44,47,47,60,59,61,62,63,63,64,61,65,66,67,67,68,65,69,70,71,71,72,69,66,69,72,72,67,66,73,65,68,68,74,73,70,75,76,76,71,70,75,61,64,64,76,75,77,78,79,79,80,77,81,82,62,62,61,81,83,81,61,61,75,83,84,63,62,62,82,84,63,84,85,86,87,88,89,90,91,92,93,87,87,86,92,94,95,96,96,97,94,98,99,100,100,101,98,102,103,104,104,105,102,106,107,108,108,109,106,110,111,112,78,77,113,114,115,78,112,111,116,117,118,115,119,116,120,121,122,123,123,124,121,125,126,127,127,128,125,129,130,131,132,133,5,5,133,6,5,134,135,135,134,136,134,137,136,137,138,136,129,139,130,139,140,141,140,142,141,137,141,138,141,142,138,141,130,139,143,144,145,144,146,145,147,145,146,144,148,146,148,149,146,146,149,150,151,132,152,153,152,154,154,152,155,152,132,155,132,5,155,155,5,135,156,157,158,158,157,146,146,157,147,159,160,158,158,160,156,34,160,159,149,161,150,161,162,150,162,163,150,150,163,164,163,165,164,165,166,164,166,167,164,164,167,129,167,168,129,169,139,129,129,168,169,154,143,153,145,153,143,170,171,172,173,172,171,174,175,176,177,178,179,180,179,178,178,181,180,182,180,181,175,183,176,184,176,183,185,177,186,179,186,177,171,185,173,186,173,185,187,188,189,190,189,188,191,192,193,194,193,192,195,196,197,198,197,196,196,191,198,193,198,191,192,199,194,200,194,199,201,195,202,197,202,195,188,201,190,202,190,201,203,204,205,206,205,204,207,208,187,188,187,208,208,209,188,201,188,209,189,210,187,207,187,210,210,189,211,212,213,214,215,216,217,218,219,220,221,220,219,222,223,224,225,226,227,228,229,230,231,230,229,232,233,234,235,236,237,238,239,240,241,242,243,123,244,124,245,246,203,204,203,246,247,248,203,249,250,251,252,253,247,248,247,253,159,33,34,254,255,256,256,257,254,255,244,123,123,256,255,244,258,121,121,124,244,259,260,125,125,128,259};
public float[] verticeTest = {20360.8f,20679.5f,611.547f,24248.7f,13527f,1074.93f,24207.4f,23005.5f,1503.19f,9819.59f,14845.7f,8.81875f,11126.3f,13982.2f,32.0718f,8379.01f,17678.5f,0.00115749f,8379.01f,15141.6f,0.00111471f,12137.8f,17973.8f,60.0461f,14591.9f,14509.2f,164.113f,15621.5f,15846.6f,223.075f,15136.7f,18549.5f,194.186f,16918.2f,16705.3f,310.215f,21081.8f,15846.6f,687.576f,19789f,16705.3f,554.435f,18467.9f,19868.7f,433.258f,18354.3f,17001.2f,423.539f,14591.9f,7402.34f,164.113f,13930.5f,9087.62f,131.015f,13039.7f,9096.18f,92.3283f,19110.4f,-8011.43f,490.311f,12811.7f,7228.03f,83.5128f,15621.5f,6064.9f,223.074f,16918.2f,5206.21f,310.215f,21807.5f,-426.492f,768.658f,11221.5f,13854f,34.3347f,12150f,12649.6f,60.4329f,12811.7f,10964.3f,83.513f,13702.6f,10955.8f,120.472f,13930.5f,12823.9f,131.015f,12150f,5542.76f,60.4327f,11119f,4205.31f,31.902f,15341.7f,-15792.9f,206.155f,9819.59f,3346.62f,8.81857f,10735.6f,-21752.5f,23.5976f,8379.01f,3050.73f,0.000981022f,18354.3f,4910.32f,423.538f,19789f,5206.21f,554.434f,21081.8f,6064.9f,687.576f,23336.1f,6399.27f,954.364f,22106.6f,7402.34f,803.393f,22764f,9087.62f,882.485f,22990.5f,10955.8f,910.595f,22764f,12823.9f,882.485f,22106.6f,14509.2f,803.393f,24248.7f,8492.36f,-3249.03f,24207.4f,17415.3f,-3297.97f,24207.4f,23005.5f,1503.19f,24248.7f,13527f,1074.93f,12728.3f,-24463.4f,-4243.56f,15341.7f,-20827.5f,-4117.81f,15341.7f,-15792.9f,206.155f,19110.4f,-13046f,-3833.65f,21807.5f,-5461.09f,-3555.3f,21807.5f,-426.492f,768.658f,19110.4f,-8011.43f,490.311f,15341.7f,-20827.5f,-4117.81f,15341.7f,-15792.9f,206.155f,10735.6f,-26787.1f,-4300.36f,10735.6f,-21752.5f,23.5976f,23336.1f,1364.68f,-3369.59f,23336.1f,6399.27f,954.364f,24883.8f,8123.11f,-2819.08f,24859.5f,16025.8f,-2803.12f,24207.4f,17415.3f,-3297.97f,24248.7f,8492.36f,-3249.03f,13363.4f,-24832.7f,-3813.62f,15976.8f,-21196.8f,-3687.86f,15341.7f,-20827.5f,-4117.81f,12728.3f,-24463.4f,-4243.56f,19745.5f,-13415.3f,-3403.7f,22442.7f,-5830.35f,-3125.36f,21807.5f,-5461.09f,-3555.3f,19110.4f,-13046f,-3833.65f,10915.8f,-27847.5f,-3863.23f,10735.6f,-26787.1f,-4300.36f,23222.6f,-2518.03f,-3057.67f,23336.1f,1364.68f,-3369.59f,10301.8f,-40240.8f,-15469.8f,10482f,-40907.1f,-14694f,10915.8f,-27847.5f,-3863.23f,10735.6f,-26787.1f,-4300.36f,25648.8f,8121.58f,-2817.31f,25624.5f,16024.2f,-2801.34f,24056.1f,-2550.94f,-3019.36f,25678.7f,16560.2f,-2907.29f,25594.2f,17951.2f,-3237.71f,25624.5f,-88046.9f,-92182.7f,25678.7f,-87767f,-92508.6f,25678.7f,16560.2f,-2907.29f,25678.7f,16560.2f,-2907.29f,25624.5f,16024.2f,-2801.34f,25624.5f,-88046.9f,-92182.7f,25624.5f,-88413.1f,-92497.2f,25678.7f,-88133.2f,-92823.1f,24765.7f,-88413.1f,-92497.2f,24820f,-88133.2f,-92823.1f,25678.7f,-88133.2f,-92823.1f,25624.5f,-88413.1f,-92497.2f,24765.7f,-89895.8f,-93770.7f,24820f,-89615.9f,-94096.6f,24820f,-88133.2f,-92823.1f,24765.7f,-88413.1f,-92497.2f,25678.7f,-89596.5f,-94079.9f,25678.7f,-88133.2f,-92823.1f,24820f,-88133.2f,-92823.1f,24820f,-89615.9f,-94096.6f,23222.6f,-93458.9f,-81162.2f,24056.1f,-93491.8f,-81123.9f,24056.1f,-2550.94f,-3019.36f,23222.6f,-2518.03f,-3057.67f,10579.6f,-102089f,-68973.2f,10579f,-102925f,-68042.7f,10482f,-40907.1f,-14694f,10579.6f,-102089f,-68973.2f,10579f,-102925f,-68042.7f,10482f,-41291.8f,-14246f,10579f,-102925f,-68042.7f,10489f,-103571f,-67018.6f,10482f,-41713.9f,-13886.7f,10482f,-41291.8f,-14246f,10489f,-103571f,-67018.6f,8379.01f,-102145f,-69021.7f,10579.6f,-102089f,-68973.2f,10301.8f,-40240.8f,-15469.8f,8379.01f,-68082.6f,-39554.7f,8379.01f,-101057f,-70411.1f,10735.6f,-101057f,-70411.1f,10579.6f,-102089f,-68973.2f,8379.01f,-102145f,-69021.7f,-7490.7f,13527f,1074.93f,-3602.79f,20679.5f,611.547f,-7449.35f,23005.5f,1503.19f,5631.77f,13982.2f,32.0718f,6938.43f,14845.7f,8.81875f,4620.19f,17973.8f,60.0461f,2166.16f,14509.2f,164.113f,1136.48f,15846.6f,223.075f,1621.29f,18549.5f,194.186f,-160.178f,16705.3f,310.215f,-4323.73f,15846.6f,687.576f,-3030.97f,16705.3f,554.435f,-1709.92f,19868.7f,433.258f,-1596.32f,17001.2f,423.539f,2827.51f,9087.62f,131.015f,2166.16f,7402.34f,164.113f,3718.3f,9096.18f,92.3283f,-2352.36f,-8011.43f,490.311f,3946.3f,7228.03f,83.5128f,1136.48f,6064.9f,223.074f,-160.182f,5206.21f,310.215f,-5049.53f,-426.492f,768.658f,5536.51f,13854f,34.3347f,4608.07f,12649.6f,60.4329f,3946.3f,10964.3f,83.513f,3055.44f,10955.8f,120.472f,2827.51f,12823.9f,131.015f,5639.04f,4205.31f,31.902f,4608.07f,5542.76f,60.4327f,1416.3f,-15792.9f,206.155f,6022.45f,-21752.5f,23.5976f,6938.43f,3346.62f,8.81857f,-1596.32f,4910.32f,423.538f,-3030.97f,5206.21f,554.434f,-4323.73f,6064.9f,687.576f,-6578.08f,6399.27f,954.364f,-5348.56f,7402.34f,803.393f,-6006f,9087.62f,882.485f,-6232.44f,10955.8f,910.595f,-6006f,12823.9f,882.485f,-5348.57f,14509.2f,803.393f,-7449.35f,17415.3f,-3297.97f,-7490.7f,8492.36f,-3249.03f,-7449.35f,23005.5f,1503.19f,-7490.7f,13527f,1074.93f,1416.3f,-20827.5f,-4117.81f,4029.77f,-24463.4f,-4243.56f,1416.3f,-15792.9f,206.155f,-5049.53f,-5461.09f,-3555.3f,-2352.36f,-13046f,-3833.65f,-5049.53f,-426.492f,768.658f,-2352.36f,-8011.43f,490.311f,1416.3f,-20827.5f,-4117.81f,1416.3f,-15792.9f,206.155f,6022.45f,-26787.1f,-4300.36f,6022.45f,-21752.5f,23.5976f,-6578.08f,1364.68f,-3369.59f,-6578.08f,6399.27f,954.364f,-8101.47f,16025.8f,-2803.12f,-8125.81f,8123.11f,-2819.08f,-7449.35f,17415.3f,-3297.97f,-7490.7f,8492.36f,-3249.03f,781.19f,-21196.8f,-3687.86f,3394.66f,-24832.7f,-3813.62f,1416.3f,-20827.5f,-4117.81f,4029.77f,-24463.4f,-4243.56f,-5684.64f,-5830.35f,-3125.36f,-2987.47f,-13415.3f,-3403.7f,-5049.53f,-5461.09f,-3555.3f,-2352.36f,-13046f,-3833.65f,5842.26f,-27847.5f,-3863.23f,6022.45f,-26787.1f,-4300.36f,-6464.54f,-2518.03f,-3057.67f,-6578.08f,1364.68f,-3369.59f,6276.06f,-40907.1f,-14694f,6456.25f,-40240.8f,-15469.8f,5842.26f,-27847.5f,-3863.23f,6022.45f,-26787.1f,-4300.36f,-8866.45f,16024.2f,-2801.34f,-8890.79f,8121.58f,-2817.31f,-7298.12f,-2550.94f,-3019.36f,-8920.72f,16560.2f,-2907.29f,-8836.13f,17951.2f,-3237.71f,-8920.72f,-87767f,-92508.6f,-8866.45f,-88046.9f,-92182.7f,-8920.72f,16560.2f,-2907.29f,-8866.45f,16024.2f,-2801.34f,-8920.72f,16560.2f,-2907.29f,-8866.45f,-88046.9f,-92182.7f,-8920.72f,-88133.2f,-92823.1f,-8866.45f,-88413.1f,-92497.2f,-8920.72f,-87767f,-92508.6f,-8866.45f,-88046.9f,-92182.7f,-8061.98f,-88133.2f,-92823.1f,-8007.72f,-88413.1f,-92497.2f,-8920.72f,-88133.2f,-92823.1f,-8866.45f,-88413.1f,-92497.2f,-8920.72f,-88133.2f,-92823.1f,-8007.72f,-88413.1f,-92497.2f,-8061.98f,-89615.9f,-94096.6f,-8007.72f,-89895.8f,-93770.7f,-8061.98f,-88133.2f,-92823.1f,-8007.72f,-88413.1f,-92497.2f,-8920.72f,-88133.2f,-92823.1f,-8920.72f,-89596.5f,-94079.9f,-8061.98f,-88133.2f,-92823.1f,-8061.98f,-89615.9f,-94096.6f,-8061.98f,-88133.2f,-92823.1f,-8920.72f,-89596.5f,-94079.9f,-7298.12f,-93491.8f,-81123.9f,-6464.54f,-93458.9f,-81162.2f,-7298.12f,-2550.94f,-3019.36f,-6464.54f,-2518.03f,-3057.67f,-7298.12f,-2550.94f,-3019.36f,-6464.54f,-93458.9f,-81162.2f,6456.25f,-40240.8f,-15469.8f,6179.01f,-102925f,-68042.7f,6178.41f,-102089f,-68973.2f,6276.06f,-41291.8f,-14246f,6179.01f,-102925f,-68042.7f,6179.01f,-102925f,-68042.7f,6276.06f,-40907.1f,-14694f,6179.01f,-102925f,-68042.7f,6276.06f,-41713.9f,-13886.7f,6269.01f,-103571f,-67018.6f,6022.45f,-21752.5f,23.5976f,6022.45f,-26787.1f,-4300.36f,10735.6f,-26787.1f,-4300.36f,10735.6f,-21752.5f,23.5976f,6178.41f,-102089f,-68973.2f,6178.41f,-102089f,-68973.2f,6022.45f,-101057f,-70411.1f
};
public String objectName;
public int triangleCount;
public int verticeCount;
public float[] vertices;
public float[] normals;
public float[] textures;
public short[] indices;
public float[] matrices;
public float[] pivots;
public float[] animations;
public void awake() {
ByteBuffer vbb = ByteBuffer.allocateDirect(verticeTest.length * 4);
vbb.order(ByteOrder.nativeOrder());
mVertexBuffer = vbb.asFloatBuffer();
mVertexBuffer.put(verticeTest);
mVertexBuffer.position(0);
ByteBuffer tbb = ByteBuffer.allocateDirect(textures.length * 4);
tbb.order(ByteOrder.nativeOrder());
mTextureBuffer = tbb.asFloatBuffer();
mTextureBuffer.put(textures);
mTextureBuffer.position(0);
//short has 2 bytes
ByteBuffer ibb = ByteBuffer.allocateDirect(indicesTest.length*2);
ibb.order(ByteOrder.nativeOrder());
indexBuffer = ibb.asShortBuffer();
indexBuffer.put(indicesTest);
indexBuffer.position(0);
verticeCount = (triangleCount*3);
}
public void draw(GL10 gl) {
System.out.println("Draw Method Called in Object");
gl.glEnable(GL10.GL_TEXTURE_2D); //workaround bug 3623
gl.glVertexPointer(3, GL10.GL_FLOAT, 0, mVertexBuffer);
System.out.println("Triangle Vertice Count is "+verticeCount);
int x = vertices.length;
System.out.println("Rendering following number of vertices "+x);
int y = indices.length;
System.out.println("Rendering following number of indices "+y);
gl.glDrawElements(GL10.GL_TRIANGLES, indices.length, GL10.GL_UNSIGNED_SHORT, indexBuffer);
}
}
And here is the code where I call the draw method :
import java.nio.FloatBuffer;
import java.util.ArrayList;
import java.util.Iterator;
import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.opengles.GL10;
import android.content.Context;
import android.opengl.GLSurfaceView;
import android.opengl.GLU;
class GLRenderer implements GLSurfaceView.Renderer {
private static final String TAG = "GLRenderer";
private final Context context;
private final GLCube cube = new GLCube();
private long startTime;
private long fpsStartTime;
private long numFrames;
SceneObject drawObject;
SceneObject object;
//Used for object position and rotation.
float zRotation;
float xRotation;
float yRotation;
float kxRotation = 0.0f;
float kyRotation = 0.0f;
ArrayList<SceneObject> sceneObjects = new ArrayList<SceneObject>();
boolean SEE_THRU = false;
GLRenderer(Context context) {
this.context = context;
}
public void onSurfaceCreated(GL10 gl, EGLConfig config) {
// Setup any OpenGL Options that are required.
gl.glEnable(GL10.GL_DEPTH_TEST);
gl.glDepthFunc(GL10.GL_LEQUAL);
gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);
gl.glEnableClientState(GL10.GL_TEXTURE_COORD_ARRAY);
gl.glEnable(GL10.GL_TEXTURE_2D);
if (SEE_THRU) {
gl.glDisable(GL10.GL_DEPTH_TEST);
gl.glEnable(GL10.GL_BLEND);
gl.glBlendFunc(GL10.GL_SRC_ALPHA, GL10.GL_ONE);
}
//Optional - disable dither to boost peformance.
//gl.glDisable(GL10.GL_DITHER); //Dithering enabled by default.
//Turn on the lights.
float lightAmbient[] = new float[] { 0.2f, 0.2f, 0.2f, 1};
float lightDiffuse[] = new float[] {1, 1, 1, 1};
float[] lightPos = new float[] {1 ,1 ,1 , 1};
gl.glEnable(GL10.GL_LIGHTING);
gl.glEnable(GL10.GL_LIGHT0);
gl.glLightfv(GL10.GL_LIGHT0, GL10.GL_AMBIENT, lightAmbient, 0);
gl.glLightfv(GL10.GL_LIGHT0, GL10.GL_DIFFUSE, lightDiffuse, 0);
gl.glLightfv(GL10.GL_LIGHT0, GL10.GL_POSITION, lightPos, 0);
//Specify which materials we should use.
float matAmbient[] = new float[] {1, 1, 1, 1};
float matDiffuse[] = new float[] {1, 1, 1, 1};
gl.glMaterialfv(GL10.GL_FRONT_AND_BACK, GL10.GL_AMBIENT, matAmbient, 0);
gl.glMaterialfv(GL10.GL_FRONT_AND_BACK, GL10.GL_DIFFUSE, matDiffuse, 0);
}
public void onSurfaceChanged(GL10 gl, int width, int height) {
//Define the view frustrum
gl.glViewport(0, 0, width, height);
gl.glMatrixMode(GL10.GL_PROJECTION);
float ratio = (float)width/height;
gl.glLoadIdentity();
//gl.glOrthof(0, 480f, 800f, 0, 0, 1);
GLU.gluPerspective(gl, 45.0f, ratio, 1.0f, 100f);
}
public void onDrawFrame (GL10 gl) {
//Defs for rotation of object.
float kzRotation = 0.0f;
kyRotation +=1.0f;
kxRotation =280.0f;
gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);
SceneObject object = sceneObjects.get(13); //Get the object
//Position the model.
gl.glMatrixMode(GL10.GL_MODELVIEW);
gl.glLoadIdentity();
gl.glTranslatef(0.0f, 0.0f, -30.0f);
gl.glScalef(0.0001f, 0.0001f, 0.0001f);
zRotation = kzRotation;
xRotation = kxRotation;
yRotation = kyRotation;
gl.glRotatef(yRotation, 0.0f, 1.0f, 0.0f);
gl.glRotatef(xRotation, 1.0f, 0.0f, 0.0f);
gl.glRotatef(zRotation, 0.0f, 0.0f, 1.0f);
object.draw(gl);
}
}
}
The problem is that the object is not displaying as it should, but instead looks warped and squashed. Can anyone spot what might be wrong ?
EDIT - Changed the onSufaceChanged method as per Tim's answer below, however no improvement.
I've added an image of how the object is rendering on Android and the same object rendering correct on the iPhone. The most noticeable problem is that the "legs" should be straight and not bend and overall the object should be much longer. I'm sure the vertices and indices in the code above are correct (they are exactly the same as the iPhone ones).
In case it is relevant here is how I am setting up the surfaceview / view:
public class SaxParserActivity extends Activity {
/** Called when the activity is first created. */
ArrayList<SceneObject> sceneObjects = new ArrayList<SceneObject>();
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//setContentView(R.layout.main);
GLView view;
view = new GLView(this, sceneObjects);
//Pass down our sceneObjects into the view class.
//view.sceneObjects = sceneObjects;
setContentView(view);
}
}
class GLView extends GLSurfaceView {
private final GLRenderer renderer;
ArrayList<SceneObject> sceneObjects = new ArrayList<SceneObject>();
GLView(Context context, ArrayList<SceneObject> sceneObjects) {
super (context);
//Uncomment this to turn on error-checking and logging.
//setDebugFlags(DEBUG_CHECK_GL_ERROR | DEBUG_LOG_GL_CALLS);
renderer = new GLRenderer(context);
//Pass down our sceneObjects.
renderer.sceneObjects = sceneObjects;
setRenderer(renderer);
}
}

I'm a bit confused by what you're doing. Why do you wipe on the projection matrix in onDrawFrame, after setting it in onSurfaceChanged?
You should set projection in onSurfaceChanged like so:
public void onSurfaceChanged(GL10 gl, int width, int height) {
gl.glViewport(0, 0, width, height);
gl.glMatrixMode(GL10.GL_PROJECTION);
gl.glLoadIdentity(); //make sure to reset before glOrthof
gl.glOrthof(0, 320f, 480f, 0, 0, 1);
}
And then change back to modelview and don't disturb the projection matrix during onDrawFrame.
You'll probably need to recalibrate your scale and translate in onDrawFrame as well after doing this.

2D rendering with VBO in lwjgl won't draw

I'm working on a 2D game in LWJGL. I have successfully rendered QUADS with textures using glBegin but moving to VBOs turned out to be a big undertaking. At the moment I can switch between the vbo and non-vbo rendering with a boolean, both using the same vertex- and texture coordinates. The VBO-implementation won't draw anything onto the screen. Can anyone point me in the right direction?
This is my initialization:
public void init() {
VBOID = VBOHandler.createVBOID();
TBOID = VBOHandler.createVBOID();
float[] vdata = {0, 0,
width, 0,
width, height,
0, height};
float[] tdata = {sx, sy,
ex, sy,
ex, ey,
sx, ey};
//Texture coordinates: (0,0)(1,0)(1,1) and (0,1)
FloatBuffer fb = BufferUtils.createFloatBuffer(8);
fb.put(vdata);
VBOHandler.bufferData(VBOID, fb);
fb = BufferUtils.createFloatBuffer(8);
fb.put(tdata);
VBOHandler.bufferData(TBOID, fb);
}
And here is my rendering code:
private void render() {
texture.bind();
if(vbo) {
GL11.glEnableClientState(GL11.GL_VERTEX_ARRAY);
GL11.glEnableClientState(GL11.GL_TEXTURE_COORD_ARRAY);
VBOHandler.bindBuffer(VBOID);
GL11.glVertexPointer(2, GL11.GL_FLOAT, 0, 0);
VBOHandler.bindBuffer(TBOID);
GL11.glTexCoordPointer(2, GL11.GL_FLOAT, 0, 0);
VBOHandler.bindElementBuffer(VBOHandler.getDefaultIBOID());
// I figured why not use a standard IBO for all my sprite drawing
// The default IBO ID is initialized earlier in the program, not shown in this code
GL12.glDrawRangeElements(GL11.GL_TRIANGLE_FAN, 0, 3, 4, GL11.GL_UNSIGNED_SHORT, 0);
GL11.glDisableClientState(GL11.GL_VERTEX_ARRAY);
GL11.glDisableClientState(GL11.GL_TEXTURE_COORD_ARRAY);
} else {
GL11.glBegin(GL11.GL_TRIANGLE_FAN);
GL11.glTexCoord2f(sx, sy);
GL11.glVertex2f(0, 0);
GL11.glTexCoord2f(ex, sy);
GL11.glVertex2f(width,0);
GL11.glTexCoord2f(ex, ey);
GL11.glVertex2f(width, height);
GL11.glTexCoord2f(sx, ey);
GL11.glVertex2f(0, height);
GL11.glEnd();
}
}
And the VBOHandler class, for those interested
public class VBOHandler {
private static int IBOID;
public static void initDefaultIBO() {
IBOID = createVBOID();
short[] indexdata = {0, 1, 2, 3};
ShortBuffer shortBuffer = BufferUtils.createShortBuffer(4);
shortBuffer.put(indexdata);
VBOHandler.bufferElementData(IBOID, shortBuffer);
}
public static int getDefaultIBOID() {
return IBOID;
}
public static int createVBOID() {
if(GLContext.getCapabilities().GL_ARB_vertex_buffer_object) {
return ARBVertexBufferObject.glGenBuffersARB();
}
return 0;
}
public static void bufferData(int id, FloatBuffer buffer) {
if (GLContext.getCapabilities().GL_ARB_vertex_buffer_object) {
ARBVertexBufferObject.glBindBufferARB(ARBVertexBufferObject.GL_ARRAY_BUFFER_ARB, id);
ARBVertexBufferObject.glBufferDataARB(ARBVertexBufferObject.GL_ARRAY_BUFFER_ARB, buffer, ARBVertexBufferObject.GL_STATIC_DRAW_ARB);
}
}
public static void bufferElementData(int id, ShortBuffer buffer) {
if (GLContext.getCapabilities().GL_ARB_vertex_buffer_object) {
ARBVertexBufferObject.glBindBufferARB(ARBVertexBufferObject.GL_ELEMENT_ARRAY_BUFFER_ARB, id);
ARBVertexBufferObject.glBufferDataARB(ARBVertexBufferObject.GL_ELEMENT_ARRAY_BUFFER_ARB, buffer, ARBVertexBufferObject.GL_STATIC_DRAW_ARB);
}
}
public static void bindBuffer(int id) {
ARBVertexBufferObject.glBindBufferARB(ARBVertexBufferObject.GL_ARRAY_BUFFER_ARB, id);
}
public static void bindElementBuffer(int id) {
ARBVertexBufferObject.glBindBufferARB(ARBVertexBufferObject.GL_ELEMENT_ARRAY_BUFFER_ARB, id);
}
}
The above render-function lies within my Sprite class. It is called by my GameView every frame as so:
public void renderGame() {
GL11.glMatrixMode(GL11.GL_MODELVIEW);
GL11.glLoadIdentity();
sprite.render();
}
The GameView is initialized with the following code:
Display.setDisplayMode(new DisplayMode(1024, 768));
GL11.glEnable(GL11.GL_TEXTURE_2D);
GL11.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
GL11.glEnable(GL11.GL_BLEND); // enable alpha blending
GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
GL11.glMatrixMode(GL11.GL_PROJECTION);
GL11.glLoadIdentity();
GL11.glOrtho(x - width/2, x + width/2, y + height / 2, y - height / 2, -1, 1);
GL11.glMatrixMode(GL11.GL_MODELVIEW);

You did not call 'flip' on the FloatBuffers before passing them to OpenGL. You need to call 'flip()' on FloatBuffers before you pass them to OpenGL, or it will not be able to read them. It is worth noting that you cannot read the FloatBuffers after you call 'flip()' yourself.