can't get texture to work
- by user583713
It been a while since I use android opengl but for what ever reason I get a white squre box and not the texture I what on the screen. Oh I do not think this would matter but just in case I put a linerlayout view first then the surfaceview on but anyway Here my code:
public class GameEngine {
private float vertices[];
private float textureUV[];
private int[] textureId = new int[1];
private FloatBuffer vertextBuffer;
private FloatBuffer textureBuffer;
private short indices[] = {0,1,2,2,1,3};
private ShortBuffer indexBuffer;
private float x, y, z;
private float rot, rotX, rotY, rotZ;
public GameEngine() {
}
public void setEngine(float x, float y, float vertices[]){
this.x = x;
this.y = y;
this.vertices = vertices;
ByteBuffer vbb = ByteBuffer.allocateDirect(this.vertices.length * 4);
vbb.order(ByteOrder.nativeOrder());
vertextBuffer = vbb.asFloatBuffer();
vertextBuffer.put(this.vertices);
vertextBuffer.position(0);
vertextBuffer.clear();
ByteBuffer ibb = ByteBuffer.allocateDirect(indices.length * 2);
ibb.order(ByteOrder.nativeOrder());
indexBuffer = ibb.asShortBuffer();
indexBuffer.put(indices);
indexBuffer.position(0);
indexBuffer.clear();
}
public void draw(GL10 gl){
gl.glLoadIdentity();
gl.glTranslatef(x, y, z);
gl.glRotatef(rot, rotX, rotY, rotZ);
gl.glBindTexture(GL10.GL_TEXTURE_2D, textureId[0]);
gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);
gl.glEnableClientState(GL10.GL_TEXTURE_COORD_ARRAY);
gl.glVertexPointer(2, GL10.GL_FLOAT, 0, vertextBuffer);
gl.glTexCoordPointer(2, GL10.GL_FLOAT, 0, textureBuffer);
gl.glDrawElements(GL10.GL_TRIANGLES, indices.length, GL10.GL_UNSIGNED_SHORT, indexBuffer);
gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);
gl.glDisableClientState(GL10.GL_TEXTURE_COORD_ARRAY);
}
public void LoadTexture(float textureUV[], GL10 gl, InputStream is) throws IOException{
this.textureUV = textureUV;
ByteBuffer tbb = ByteBuffer.allocateDirect(this.textureUV.length * 4);
tbb.order(ByteOrder.nativeOrder());
textureBuffer = tbb.asFloatBuffer();
textureBuffer.put(this.textureUV);
textureBuffer.position(0);
textureBuffer.clear();
Bitmap bitmap = null;
try{
bitmap = BitmapFactory.decodeStream(is);
}finally{
try{
is.close();
is = null;
gl.glGenTextures(1, textureId,0);
gl.glBindTexture(GL10.GL_TEXTURE_2D, textureId[0]);
gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MIN_FILTER, GL10.GL_NEAREST);
gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MAG_FILTER, GL10.GL_LINEAR);
//Different possible texture parameters, e.g. GL10.GL_CLAMP_TO_EDGE
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);
//Use the Android GLUtils to specify a two-dimensional texture image from our bitmap
GLUtils.texImage2D(GL10.GL_TEXTURE_2D, 0, bitmap, 0);
gl.glBlendFunc(GL10.GL_SRC_ALPHA, GL10.GL_ONE_MINUS_SRC_ALPHA);
//Clean up
gl.glBindTexture(GL10.GL_TEXTURE_2D, textureId[0]);
bitmap.recycle();
}catch(IOException e){
}
}
}
public void setVector(float x, float y, float z){
this.x = x;
this.y = y;
this.z = z;
}
public void setRot(float rot, float x, float y, float z){
this.rot = rot;
this.rotX = x;
this.rotY = y;
this.rotZ = z;
}
public float getZ(){
return z;
}
}
