Remove dead NEED_DBE_BUF_BITS code.

1 files changed, 0 insertions, 54 deletions

diff --git a/include/dix.h b/include/dix.h
index b41268398..2d452d1c7 100644
--- a/include/dix.h
+++ b/include/dix.h
@@ -81,59 +81,6 @@ SOFTWARE.
         return(BadIDChoice);\
     }
 
-/*
- * We think that most hardware implementations of DBE will want
- * LookupID*(dbe_back_buffer_id) to return the window structure that the
- * id is a back buffer for.  Since both front and back buffers will
- * return the same structure, you need to be able to distinguish
- * somewhere what kind of buffer (front/back) was being asked for, so
- * that ddx can render to the right place.  That's the problem that the
- * following code solves.  Note: we couldn't embed this in the LookupID*
- * functions because the VALIDATE_DRAWABLE_AND_GC macro often circumvents
- * those functions by checking a one-element cache.  That's why we're
- * mucking with VALIDATE_DRAWABLE_AND_GC.
- * 
- * If you put -DNEED_DBE_BUF_BITS into PervasiveDBEDefines, the window
- * structure will have two additional bits defined, srcBuffer and
- * dstBuffer, and their values will be maintained via the macros
- * SET_DBE_DSTBUF and SET_DBE_SRCBUF (below).  If you also
- * put -DNEED_DBE_BUF_VALIDATE into PervasiveDBEDefines, the function
- * DbeValidateBuffer will be called any time the bits change to give you
- * a chance to do some setup.  See the DBE code for more details on this
- * function.  We put in these levels of conditionality so that you can do
- * just what you need to do, and no more.  If neither of these defines
- * are used, the bits won't be there, and VALIDATE_DRAWABLE_AND_GC will
- * be unchanged.	dpw
- */
-
-#if defined(NEED_DBE_BUF_BITS)
-#define SET_DBE_DSTBUF(_pDraw, _drawID) \
-        SET_DBE_BUF(_pDraw, _drawID, dstBuffer, TRUE)
-#define SET_DBE_SRCBUF(_pDraw, _drawID) \
-        SET_DBE_BUF(_pDraw, _drawID, srcBuffer, FALSE)
-#if defined (NEED_DBE_BUF_VALIDATE)
-#define SET_DBE_BUF(_pDraw, _drawID, _whichBuffer, _dstbuf) \
-    if (_pDraw->type == DRAWABLE_WINDOW)\
-    {\
-	int thisbuf = (_pDraw->id == _drawID);\
-	if (thisbuf != ((WindowPtr)_pDraw)->_whichBuffer)\
-	{\
-	     ((WindowPtr)_pDraw)->_whichBuffer = thisbuf;\
-	     DbeValidateBuffer((WindowPtr)_pDraw, _drawID, _dstbuf);\
-	}\
-     }
-#else /* want buffer bits, but don't need to call DbeValidateBuffer */
-#define SET_DBE_BUF(_pDraw, _drawID, _whichBuffer, _dstbuf) \
-    if (_pDraw->type == DRAWABLE_WINDOW)\
-    {\
-	((WindowPtr)_pDraw)->_whichBuffer = (_pDraw->id == _drawID);\
-    }
-#endif /* NEED_DBE_BUF_VALIDATE */
-#else /* don't want buffer bits in window */
-#define SET_DBE_DSTBUF(_pDraw, _drawID) /**/
-#define SET_DBE_SRCBUF(_pDraw, _drawID) /**/
-#endif /* NEED_DBE_BUF_BITS */
-
 #define VALIDATE_DRAWABLE_AND_GC(drawID, pDraw, pGC, client)\
     if ((stuff->gc == INVALID) || (client->lastGCID != stuff->gc) ||\
 	(client->lastDrawableID != drawID))\
@@ -158,7 +105,6 @@ SOFTWARE.
         pGC = client->lastGC;\
         pDraw = client->lastDrawable;\
     }\
-    SET_DBE_DSTBUF(pDraw, drawID);\
     if (pGC->serialNumber != pDraw->serialNumber)\
 	ValidateGC(pDraw, pGC);