OpenGL in NDK without GLSurfaceView

[Rémi]

Hi,

In my application I would like to have more control over OpenGL and EGL to present the renderbuffer, etc...

Right now I create a GLSurfaceView and pass the render call to the NDK who then do the necessary OpenGL calls.

I've looked at the NativeActivity sample, and I would like to have as much control over OpenGL but I need to have a Java side too, so NativeActivity doesn't work for me.

The problem I am facing is how to create the window so it gets display on screen. Basically, how do I get the window object necessary to create the window surface, to do the equivalent as (from NativeActivity sample) :

    eglGetConfigAttrib(display, config, EGL_NATIVE_VISUAL_ID, &format);

    ANativeWindow_setBuffersGeometry(engine->app->window, 0, 0, format);

    surface = eglCreateWindowSurface(display, config, engine->app->window, NULL);

Is what I'm trying to do even possible?

Thanks

[Tim Mensch]

On 6/10/2011 9:32 AM, Rémi wrote:
> In my application I would like to have more control over OpenGL and
> EGL to present the renderbuffer, etc...
> Right now I create a GLSurfaceView and pass the render call to the NDK
> who then do the necessary OpenGL calls.

GLSurfaceView is open source. You can, at a minimum, start with the
GLSurfaceView source imported into your application, and modify it from
there until you get to the point where it does exactly what you want.

Picking a VERSION of GLSurfaceView to start with is left as an exercise
for the reader. :)

Tim

[Dianne Hackborn]

You can most certainly use Java code with NativeActivity.  Just implement your subclass of NativeActivity...  or just use JNI from your native code to all back in to whatever Java code you want.

If you mean you want to mix a regular view hierarchy with Java code than you can just use a plain SurfaceView and your own version of GLSurfaceView's code, as Tim suggests, to do what you want.  You can also use a SurfaceView and the 2.3 ANativeWindow_fromSurface() API to retrieve the native window of the Surface object you get from SurfaceView.

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[Rémi Chaignon]

Thanks for your help, I will dig deeper.