Alloc sprite memory in devices' devPrivates, allow undisplaying cursors.

Improve memory usage by allocating the sprite's memory only to devices that
actually have a sprite and provide means to remove a device's cursor from the
screen (more hotplugging, yay!).
This commit breaks ScreenRec's ABI.

1 files changed, 8 insertions, 0 deletions

diff --git a/mi/misprite.h b/mi/misprite.h
index 96d2d7d54..72dc06fc7 100644
--- a/mi/misprite.h
+++ b/mi/misprite.h
@@ -89,6 +89,14 @@ typedef struct {
 		int /*dx*/,
 		int /*dy*/
 );
+    Bool	(*DeviceCursorInitialize)(
+                DeviceIntPtr /*pDev*/,
+		ScreenPtr /*pScreen*/
+);
+    void	(*DeviceCursorCleanup)(
+                DeviceIntPtr /*pDev*/,
+		ScreenPtr /*pScreen*/
+);
 
 } miSpriteCursorFuncRec, *miSpriteCursorFuncPtr;