In June 2001, Microsoft indicated that it was planning to, in conjunction with Intel and other PC makers, spend at least US$ 1 billion on marketing and promoting Windows XP.  The theme of the campaign, "Yes You Can", was designed to emphasize the platform's overall capabilities. Microsoft had originally planned to use the slogan "Prepare to Fly", but it was replaced due to sensitivity issues in the wake of the September 11 attacks .  A prominent aspect of Microsoft's campaign was a . television commercial featuring Madonna 's song " Ray of Light "; a Microsoft spokesperson stated that the song was chosen due to its optimistic tone and how it complemented the overall theme of the campaign.  
On 22 October 2016 (and subsequent weekends), mobile showed majority.  Since 27 October, the desktop hasn't shown majority, not even on weekdays. And smartphones alone have showed majority since 23 December to the end of the year, with the share topping at % on Christmas Day.  To the "mobile"-majority share then of smartphones, tablets could be added giving a % majority. While an unusually high top, a similarly high also happened on Monday 17 April 2017, with then only smartphones share slightly lower and tablet share slightly higher, with them combined at %.
The key to this and other volumetric stencil buffer effects, is the interaction between the stencil buffer and the z-buffer. A scene with a shadow volume is rendered in three stages. First, the scene without the shadow is rendered as usual, using the z-buffer. Next, the shadow is marked out in the stencil buffer as follows. The front faces of the shadow volume are drawn using invisible polygons, with z-testing enabled but z-writes disabled and the stencil buffer incremented at every pixel passing the z-test. The back faces of the shadow volume are rendered similarly, but decrementing the stencil value instead.