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static void VGAarbiterGetSpans (DrawablePtr pDrawable, int wMax, DDXPointPtr
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ppt, int *pwidth, int nspans, char *pdstStart);
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static void VGAarbiterSourceValidate (DrawablePtr pDrawable, int x, int y,
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static void VGAarbiterCopyWindow(WindowPtr pWin, DDXPointRec ptOldOrg,
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static void VGAarbiterClearToBackground (WindowPtr pWin, int x, int y, int w,