Hello Community,


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List of Tutorials worked out so far:

• What is OpenGl ES
• Preparing a blank screen
• ...

Regards,
plusminus

If I want to create a tetris game for android, would it be smart to first create one for a PC (in a QT window) and when it's finished port it to the android platform? I think testing the game everytime in the virtual machine takes up a lot of time.

Or would I run into problems very fast, is opengl on a computer very different than in android? For example, load pictures/files, reading keyboard input, etc?

Hello BackwardsDown,

as OpenGL is a Standard the functions are at least almost the same
As starting a Activity on the Emulator takes not too long (5 to 10 seconds with me) I would develop already on it.

Regards,
plusminus

i tried your GL tutorial and i tried this example.but iin this code it shows error in "this.myGLContext.waitNative(canvas, this);"suggests me

This code is can run on m3.The OPENGL in android have some change in M5. u can find the change in http://code.google.com/android/migratin ... anges.html.

E.Jyothsna wrote:i tried your GL tutorial and i tried this example.but iin this code it shows error in "this.myGLContext.waitNative(canvas, this);"suggests me

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Syntax: [ Download ] [ Show ]

Using java Syntax Highlighting

1. package edu.union;
2.  
3. import javax.microedition.khronos.opengles.GL10;
4.  
5. import android.content.Context;
6. import android.graphics.Canvas;
7. import android.graphics.OpenGLContext;
8. import android.view.View;
9.  
10. public class GLTutorialOne extends View {
11.      protected OpenGLContext myGLContext;
12.      protected GL10 myGL;
13.      
14.      public GLTutorialOne(Context c) {
15.           super(c);
16.           /* Create a OpenGLContext
17.            * In this case there is no
18.            * need to save it, but in other
19.            * cases it will be reused. */
20.           this.myGLContext = new OpenGLContext(0);
21.           /* Store the GL interface that will handle  
22.            * the actual graphical operations */
23.           this.myGL = (GL10)this.myGLContext.getGL();
24.          
25.           /* Set the color to be uses when clearing
26.            * Params: Red, Green, Blue, Alpha
27.            * All from (0.0f up to 1.0f)
28.            * Below we use a android-green =) */
29.           this.myGL.glClearColor(0.0f, 0.8f, 0.0f, 0.0f);
30.      }
31.      
32.      protected void onDraw(Canvas canvas) {      
33.           /* waitNative() makes sure all pending
34.            * native drawing calls  have completed
35.            * and binds this passed canvas to
36.            * the specified context(here: this). */
37.           this.myGLContext.waitNative(canvas, this);
38.          
39.           /* This call will finally cause our
40.            * canvas to be cleared to the color
41.            * we passed in the constructor */
42.           this.myGL.glClear(GL10.GL_COLOR_BUFFER_BIT);
43.      }
44. }

Parsed in 0.034 seconds, using GeSHi 1.0.8.4

thank u for sending that link.but after clicking that it shows URL not found

E.Jyothsna wrote:i tried your GL tutorial and i tried this example.but iin this code it shows error in "this.myGLContext.waitNative(canvas, this);"suggests me

Syntax: [ Download ] [ Hide ]

Syntax: [ Download ] [ Show ]

Using java Syntax Highlighting

1. package edu.union;
2.  
3. import javax.microedition.khronos.opengles.GL10;
4.  
5. import android.content.Context;
6. import android.graphics.Canvas;
7. import android.graphics.OpenGLContext;
8. import android.view.View;
9.  
10. public class GLTutorialOne extends View {
11.      protected OpenGLContext myGLContext;
12.      protected GL10 myGL;
13.      
14.      public GLTutorialOne(Context c) {
15.           super(c);
16.           /* Create a OpenGLContext
17.            * In this case there is no
18.            * need to save it, but in other
19.            * cases it will be reused. */
20.           this.myGLContext = new OpenGLContext(0);
21.           /* Store the GL interface that will handle  
22.            * the actual graphical operations */
23.           this.myGL = (GL10)this.myGLContext.getGL();
24.          
25.           /* Set the color to be uses when clearing
26.            * Params: Red, Green, Blue, Alpha
27.            * All from (0.0f up to 1.0f)
28.            * Below we use a android-green =) */
29.           this.myGL.glClearColor(0.0f, 0.8f, 0.0f, 0.0f);
30.      }
31.      
32.      protected void onDraw(Canvas canvas) {      
33.           /* waitNative() makes sure all pending
34.            * native drawing calls  have completed
35.            * and binds this passed canvas to
36.            * the specified context(here: this). */
37.           this.myGLContext.waitNative(canvas, this);
38.          
39.           /* This call will finally cause our
40.            * canvas to be cleared to the color
41.            * we passed in the constructor */
42.           this.myGL.glClear(GL10.GL_COLOR_BUFFER_BIT);
43.      }
44. }

Parsed in 0.036 seconds, using GeSHi 1.0.8.4

For some reason when i import android.graphics.OpenGLContext I'm getting an error that says it cannot resolve the issue. I assume that my development environment isn't set up correctly. Is there something I'm forgetting. Its asking me if i wish to create that class... and I assume thats incorrect lol.

hi,
i m new in android.
i have the same error in openglcontext in sdk 1.0 can anybody help me?
i found that this class is removed from sdk but i m not getting which class is added
in place of this class.
thnks,
Alpesh

Hi all
I am to facing the same problem in android SDK 1.1 release
Please suggest some solution over it
thnx

Thank you for this! I hope to learn from it and find out the things i need to start with coding my stuff.

cheers!

Rami

What tutorials and libraries are available which can help beginners to develop 2D and 3D games on Android using OpenGL-ES? I'm looking for tutorials which can help me learn OpenGL-ES, and I'm looking for OpenGL-ES libraries which can make life easier for beginners in OpenGL-ES. The tutorial part seems to be covered by the name of this topic, therefore I am posting this as a followup here.

Since Android is still small, I guess it may be help-full to read iPhone OpenGL-ES tutorials as well, as I suppose the OpenGL-ES functionality is much the same.

I have found useful information which I would have liked to share, but I am not yet allowed.

I'm trying to use Brendan's object loader for wavefront objects. The problem I'm having is it looks like his load routine takes in a string name, and then checks the .obj's first line to see if it specifies a texture:





I have my .obj in the /src folder of my project as well as the texture, but it always fails when it tries to read the texture file. Where should I be storing these objects in my project for this code to work properly? Are there any examples for this code that are specificly using the WaveFront loader? Any help would be greatly appreciated.

Hi,

I am working on OpenGL2.0 in android.But I didn't find the way how to enable and disable OpenGL2.0 in andorid and Android Browser. If anyone knows please help me on this..

Thanx in advance..

Hi, jettimadhu. You can refer to Android API Demos, there exsit an OpenGL ES 2.0 Demo.
You can new an android project from Eclipse, in the new project wizard, choose "Create project from exsisting sample and choose build target of Android 2.2. After creating the API Demo project. The source is under "src/com.example.android.apis.graphics.GLES20Activity"

Tan,

This is exactly the link I was looking for thank you. As a novice developer I have found this forum to be a great source which leads me to another question I have been looking to ask. What other tutorials would you recommend, and what is the best way to get on the fast track to effective android application creation. I think it would be cool to develop a working IT staffing job search app. I have so many ideas, and a lot of passion, but I need to work on my technical skills quite a bit.