[cocos2d]how To Create Bitmap From Glsurfaceview

How can I take screen shot of Glsurfaceview in Cocos2d. I tried with following code using GLsurfaceView GlsurfaceView glv=CCDirector.sharedDirector().getOpenGLView(); glv.s

Solution 1:

I got answer from this anddev forum question I attached code along with this hope somebody will find this helpful

Please Put this code inside renderer class onDraw Method inside starting.

publicstatic Bitmap SavePixels(int x, int y, int w, int h, GL10 gl)
{  
    int b[]=newint[w*h];
    int bt[]=newint[w*h];
    IntBuffer ib=IntBuffer.wrap(b);
    ib.position(0);
    gl.glReadPixels(x, y, w, h, GL10.GL_RGBA, GL10.GL_UNSIGNED_BYTE, ib);

    /*  remember, that OpenGL bitmap is incompatible with 
        Android bitmap and so, some correction need.
     */for(int i=0; i<h; i++)
    {         
        for(int j=0; j<w; j++)
        {
            int pix=b[i*w+j];
            int pb=(pix>>16)&0xff;
            int pr=(pix<<16)&0x00ff0000;
            int pix1=(pix&0xff00ff00) | pr | pb;
            bt[(h-i-1)*w+j]=pix1;
        }
    }              
    Bitmap sb=Bitmap.createBitmap(bt, w, h, true);
    return sb;
}

publicstaticvoid SavePNG(int x, int y, int w, int h, String name, GL10 gl)
{
    Bitmap bmp=SavePixels(x,y,w,h,gl);
    try
    {
        FileOutputStream fos=new FileOutputStream("/sdcard/my_app/"+name);
        bmp.compress(CompressFormat.PNG, 100, fos);
        try
        {
            fos.flush();
        }
        catch (IOException e)
        {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        try
        {
            fos.close();
        }
        catch (IOException e)
        {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
    catch (FileNotFoundException e)
    {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }              
}

Solution 2:

Here is solution:

if (MainImageProcessingActivity.capture) {
        int width = MainImageProcessingActivity.w;
        int height = MainImageProcessingActivity.h;
        int screenshotSize = width * height;
        ByteBuffer bb = ByteBuffer.allocateDirect(screenshotSize * 4);
        bb.order(ByteOrder.nativeOrder());
        gl.glReadPixels(0, 0, width, height, GL10.GL_RGBA,
                GL10.GL_UNSIGNED_BYTE, bb);
        int pixelsBuffer[] = newint[screenshotSize];
        bb.asIntBuffer().get(pixelsBuffer);
        bb = null;
        Bitmap bitmap = Bitmap.createBitmap(width, height,
                Bitmap.Config.RGB_565);
        bitmap.setPixels(pixelsBuffer, screenshotSize - width, -width, 0,
                0, width, height);
        pixelsBuffer = null;

        short sBuffer[] = newshort[screenshotSize];
        ShortBuffer sb = ShortBuffer.wrap(sBuffer);
        bitmap.copyPixelsToBuffer(sb);

        // Making created bitmap (from OpenGL points) compatible with// Android bitmapfor (int i = 0; i < screenshotSize; ++i) {
            short v = sBuffer[i];
            sBuffer[i] = (short) (((v & 0x1f) << 11) | (v & 0x7e0) | ((v & 0xf800) >> 11));
        }
        sb.rewind();
        bitmap.copyPixelsFromBuffer(sb);
        MainImageProcessingActivity.captureBmp = bitmap.copy(Bitmap.Config.ARGB_8888,false);
        MainImageProcessingActivity.capture=false;
    }

put the code under onDrawFrame(GL10 gl) method, IT WORKS!