Hello, Some notes:
On Fri, 2010-09-03 at 01:49 -0400, Erik Blankinship wrote: > self.cairo_img = cairo.ImageSurface( cairo.FORMAT_ARGB32, self.box_w, > self.box_h ) You are using client side image surfaces. It might be better to create a new server side surface using create_similar on the contexts target in the expose handler (the first time you need it). (You can also use the realize event.) > ctx = cairo.Context( self.cairo_img ) > ctx.set_source_rgb( 0, 0, 1 ) > ctx.rectangle( 0, 0, self.box_w, self.box_h ) > ctx.fill( ) This particular code right now does not need alpha. Should you not need alpha, you could try cairo.FORMAT_RGB24. > elif (self.box_type == 3): > context.set_source_pixbuf( self.pixbuf, self.box_x, self.box_y ) set_source_pixbuf not very efficient. It needs to convert the pixel format from the one used by GdkPixbuf (RGB(A), not endian specific to premultiplied endian specific ARGB). You can instead call set_source_pixbuf once, to let gdk convert the pixel format, and after that keep around the cairo surface. Two ways of doing this come to mind: 1. Create a cairo surface (best with create_similar), then the context, and draw the surface on that. 2. Use ctx.get_source().get_surface(), this returns the ImageSurface That said, I just happened to read this mail, and these things came to my mind. I have no idea what operations the video driver on the XO can properly accelerate. The above notes should hover be true in general, I think. Benjamin _______________________________________________ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
