| 摘要 |
Remote desktop servers (100) include a display encoder (160) that maintains a secondary framebuffer (162) that contains display data to be encoded and transmitted to a remote client display. The display encoder (160) submits requests to update the display data in the secondary framebuffer (162) to a video adapter driver (154) that has access to a primary framebuffer (142) whose display data is updated according to drawing commands received from applications (148, 400) running on the remote desktop servers (100). The video adapter driver (154) utilizes a spatial data structure (156) to track changes made to the display data located in regions (215, 305-330) of the primary framebuffer (142) and copies the display data in those regions (215, 305-330) of the primary framebuffer (142) to corresponding regions (215, 305-330) in the secondary framebuffer (162).
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