| 摘要 |
A system embodying the invention includes a controlling device (110) and a set of rendering devices (120), with the effect that the controlling device (110) can distribute a set of objects to the rendering devices (120). Each rendering device (120) computes a (2D) image in response to the objects assigned to it, including computing multiple overlapping images and using a graphics processor (119) to blend those images into a resultant image. To interface with the graphics processor, each rendering device (120) spoofs the a-value with a pixel feature other than opacity (opacity is expected by the graphics processor (119)), with the effect that the graphics processor (119) delivers useful a- values, while still delivering correct color values, for each pixel. This has the effect that the resultant images include transparency information sufficient to combine them using transparency blending.
|
