dear Dennis,
you answered the relationship between screen and layer, but 1)how is the relationship between layer and Window on a screen? 2)how is the relationship between surface and layer on a screen? 3)how is the relationship between surface and Window on a screen? Regards, Yunfeng ----- Original Message ----- From: "Denis Oliver Kropp" <[EMAIL PROTECTED]> To: "Jason BARSTOW" <[EMAIL PROTECTED]> Cc: <[email protected]> Sent: Friday, May 19, 2006 8:36 AM Subject: Re: [directfb-users] Screens - Layers - SetVideoMode. > Jason BARSTOW wrote: > > > > > > > > I have some conceptual questions: > > > > a) What is the relationship between layers and screens. > > I see one can enumerate layers from a screen interface, and given a > > layer it's possible to retrieve its screen. > > => Relationship Screen 1 : N Layers. > > That's right. > > > b) How would one set a video mode for an arbitrary screen? > > For IDirectFB::SetVideoMode: The primary surface is attached to a > > layer and this is present on a given screen; it is that screen that is > > affected in this case. Correct? > > But is it possible to set the mode directly for any screen? There are > > methods via IDirectFBScreen to set mixer, encoder and output > > configurations, but I don't see any explicit resolution or timing > > structure. > > Or is this implicit from the layer dimensions - which layer? Is it > > the 'primary layer' on each screen? > > Well, in the very beginning there was only the frame buffer device based > primary layer implementation. Using the fbdev ioctls also changed the > screen resolution. That's still true for the fbdev primary layer, but > other implementations really just implement layer control. The only > indication of the screen size so far is the tv standard selection, but > the screen API is not finished... > > -- > Best regards, > Denis Oliver Kropp > > .------------------------------------------. > | DirectFB - Hardware accelerated graphics | > | http://www.directfb.org/ | > "------------------------------------------" > > _______________________________________________ > directfb-users mailing list > [email protected] > http://mail.directfb.org/cgi-bin/mailman/listinfo/directfb-users > _______________________________________________ directfb-users mailing list [email protected] http://mail.directfb.org/cgi-bin/mailman/listinfo/directfb-users
