Initialize the SurfaceTexture buffer slots.

SurfaceTexture::SurfaceTexture(GLuint tex) :

    mBufferCount(MIN_BUFFER_SLOTS), mCurrentTexture(INVALID_BUFFER_SLOT),

    mLastQueued(INVALID_BUFFER_SLOT), mTexName(tex) {

    for (int i = 0; i < NUM_BUFFER_SLOTS; i++) {

        mSlots[i].mEglImage = EGL_NO_IMAGE_KHR;

        mSlots[i].mEglDisplay = EGL_NO_DISPLAY;

        mSlots[i].mOwnedByClient = false;

    }

}

SurfaceTexture::~SurfaceTexture() {