Android EGLConfig has no properties

Question

I am getting EGLConfig objects using eglChooseConfig on Android like this:

    ...
    int[] configSpec = new int[]
    {
        EGL10.EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
        EGL10.EGL_NONE
    };
    if (!lEgl.eglChooseConfig(lDisplay, configSpec, configs, configs.length, num_config))
    {
    ...

eglChooseConfig returns 19 EGLConfig objects.

I want to get properties from these objects like color depth for example.

The problem is that the EGLConfig class has no getters nor public members. See EGLConfig documentation.

Does anybody know how to get properties like color depth from an EGLConfig object?

Answer 1

I found the solution myself. I had to use eglGetConfigAttrib like this:

    int[] lValue = new int[1];
    lEgl.eglGetConfigAttrib(lDisplay, configs[0],  EGL10.EGL_ALPHA_SIZE , lValue);
    Log.v("eglresult", "EGL_ALPHA_SIZE: " + lValue[0]);