| 摘要 |
A method for drawing a composite image (P) at a client Set Top Box STB of a telecommunication system also comprising a server coupled to the STB. In the example, the composite image comprises objects (S, X, C) rendered on a background graphical buffer or image (B). The method comprises a first step of rendering (CT), at the server side, the objects (S, X, C) on a transparent graphical buffer (T) in order to obtain a temporary graphical buffer (T2). The temporary graphical buffer (T2) is then sent (DT) downstream from the server to the client STB. Finally, at the client side, the background graphical buffer (B) is mixed (AB) with the temporary graphical buffer (T2) to obtain the composite image (P). This method is applicable to a "thin" client STB because only a mixing operation is performed by the graphical processing unit GPU at the client side.
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