On Thu, Aug 14, 2003 at 11:07:46AM +0200, Alexander Block wrote:
> Thanks for your quick answer. Where can I get more information about the
> shadowfb driver (include file, library, API doc) ?
In the X source file ? I don't know if the design document speaks about
it, but it is rather straightforward to implement. The source code of
shadowfb is in :
xc/programs/Xserver/hw/xfree86/shadowfb
And contain the following header file :
/* $XFree86: xc/programs/Xserver/hw/xfree86/shadowfb/shadowfb.h,v 1.4
* 2003/02/18 19:10:35 alanh Exp $ */
#ifndef _SHADOWFB_H
#define _SHADOWFB_H
#include "xf86str.h"
/*
* User defined callback function. Passed a pointer to the ScrnInfo
* struct,
* the number of dirty rectangles, and a pointer to the first dirty
* rectangle
* in the array.
*/
typedef void (*RefreshAreaFuncPtr)(ScrnInfoPtr, int, BoxPtr);
/*
* ShadowFBInit initializes the shadowfb subsystem. refreshArea is a
* pointer
* to a user supplied callback function. This function will be called
* after
* any operation that modifies the framebuffer. The newly dirtied
* rectangles
* are passed to the callback.
*
* Returns FALSE in the event of an error.
*/
Bool
ShadowFBInit (
ScreenPtr pScreen,
RefreshAreaFuncPtr refreshArea
);
/*
* ShadowFBInit2 is a more featureful refinement of the original
* shadowfb.
* ShadowFBInit2 allows you to specify two callbacks, one to be called
* immediately before an operation that modifies the framebuffer, and
* another
* to be called immediately after.
*
* Returns FALSE in the event of an error
*/
Bool
ShadowFBInit2 (
ScreenPtr pScreen,
RefreshAreaFuncPtr preRefreshArea,
RefreshAreaFuncPtr postRefreshArea
);
#endif /* _SHADOWFB_H */
If you need additional info, look at how the other drivers implement it.
Friendly,
Sven Luther
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