From 6118346d64e3c2fbe1fe2f041ea773dd2a3c0438 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?S=C3=B8ren=20Sandmann=20Pedersen?= <ssp@redhat.com>
Date: Mon, 1 Nov 2010 22:04:49 -0400
Subject: [PATCH] Delete unused fbWalkCompositeRegion()
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This function has not been used since most of the compositing was
moved to pixman. The only reason it has survived until now is that it
was part of the server ABI.

Reviewed-by: Aaron Plattner <aplattner@nvidia.com>
Reviewed-by: Mikhail Gusarov <dottedmag@dottedmag.net>
Signed-off-by: Søren Sandmann <ssp@redhat.com>
---
 fb/fbpict.c    | 106 -------------------------------------------------
 fb/fbpict.h    |  17 --------
 fb/wfbrename.h |   1 -
 3 files changed, 124 deletions(-)

diff --git a/fb/fbpict.c b/fb/fbpict.c
index f7f120002..3bc141bcd 100644
--- a/fb/fbpict.c
+++ b/fb/fbpict.c
@@ -35,112 +35,6 @@
 #include "mipict.h"
 #include "fbpict.h"
 
-#define mod(a,b) ((b) == 1 ? 0 : (a) >= 0 ? (a) % (b) : (b) - (-a) % (b))
-
-void
-fbWalkCompositeRegion (CARD8 op,
-		       PicturePtr pSrc,
-		       PicturePtr pMask,
-		       PicturePtr pDst,
-		       INT16 xSrc,
-		       INT16 ySrc,
-		       INT16 xMask,
-		       INT16 yMask,
-		       INT16 xDst,
-		       INT16 yDst,
-		       CARD16 width,
-		       CARD16 height,
-		       Bool srcRepeat,
-		       Bool maskRepeat,
-		       CompositeFunc compositeRect)
-{
-    RegionRec	    region;
-    int		    n;
-    BoxPtr	    pbox;
-    int		    w, h, w_this, h_this;
-    int		    x_msk, y_msk, x_src, y_src, x_dst, y_dst;
-    
-    xDst += pDst->pDrawable->x;
-    yDst += pDst->pDrawable->y;
-    if (pSrc->pDrawable)
-    {
-        xSrc += pSrc->pDrawable->x;
-        ySrc += pSrc->pDrawable->y;
-    }
-    if (pMask && pMask->pDrawable)
-    {
-	xMask += pMask->pDrawable->x;
-	yMask += pMask->pDrawable->y;
-    }
-
-    if (!miComputeCompositeRegion (&region, pSrc, pMask, pDst, xSrc, ySrc,
-				   xMask, yMask, xDst, yDst, width, height))
-        return;
-    
-    n = RegionNumRects (&region);
-    pbox = RegionRects (&region);
-    while (n--)
-    {
-	h = pbox->y2 - pbox->y1;
-	y_src = pbox->y1 - yDst + ySrc;
-	y_msk = pbox->y1 - yDst + yMask;
-	y_dst = pbox->y1;
-	while (h)
-	{
-	    h_this = h;
-	    w = pbox->x2 - pbox->x1;
-	    x_src = pbox->x1 - xDst + xSrc;
-	    x_msk = pbox->x1 - xDst + xMask;
-	    x_dst = pbox->x1;
-	    if (maskRepeat)
-	    {
-		y_msk = mod (y_msk - pMask->pDrawable->y, pMask->pDrawable->height);
-		if (h_this > pMask->pDrawable->height - y_msk)
-		    h_this = pMask->pDrawable->height - y_msk;
-		y_msk += pMask->pDrawable->y;
-	    }
-	    if (srcRepeat)
-	    {
-		y_src = mod (y_src - pSrc->pDrawable->y, pSrc->pDrawable->height);
-		if (h_this > pSrc->pDrawable->height - y_src)
-		    h_this = pSrc->pDrawable->height - y_src;
-		y_src += pSrc->pDrawable->y;
-	    }
-	    while (w)
-	    {
-		w_this = w;
-		if (maskRepeat)
-		{
-		    x_msk = mod (x_msk - pMask->pDrawable->x, pMask->pDrawable->width);
-		    if (w_this > pMask->pDrawable->width - x_msk)
-			w_this = pMask->pDrawable->width - x_msk;
-		    x_msk += pMask->pDrawable->x;
-		}
-		if (srcRepeat)
-		{
-		    x_src = mod (x_src - pSrc->pDrawable->x, pSrc->pDrawable->width);
-		    if (w_this > pSrc->pDrawable->width - x_src)
-			w_this = pSrc->pDrawable->width - x_src;
-		    x_src += pSrc->pDrawable->x;
-		}
-		(*compositeRect) (op, pSrc, pMask, pDst,
-				  x_src, y_src, x_msk, y_msk, x_dst, y_dst,
-				  w_this, h_this);
-		w -= w_this;
-		x_src += w_this;
-		x_msk += w_this;
-		x_dst += w_this;
-	    }
-	    h -= h_this;
-	    y_src += h_this;
-	    y_msk += h_this;
-	    y_dst += h_this;
-	}
-	pbox++;
-    }
-    RegionUninit(&region);
-}
-
 void
 fbComposite (CARD8      op,
 	     PicturePtr pSrc,
diff --git a/fb/fbpict.h b/fb/fbpict.h
index b89f90ff1..896cd01a9 100644
--- a/fb/fbpict.h
+++ b/fb/fbpict.h
@@ -442,23 +442,6 @@ typedef void	(*CompositeFunc) (CARD8      op,
 				  CARD16     width,
 				  CARD16     height);
 
-extern _X_EXPORT void
-fbWalkCompositeRegion (CARD8 op,
-		       PicturePtr pSrc,
-		       PicturePtr pMask,
-		       PicturePtr pDst,
-		       INT16 xSrc,
-		       INT16 ySrc,
-		       INT16 xMask,
-		       INT16 yMask,
-		       INT16 xDst,
-		       INT16 yDst,
-		       CARD16 width,
-		       CARD16 height,
-		       Bool srcRepeat,
-		       Bool maskRepeat,
-		       CompositeFunc compositeRect);
-
 /* fbtrap.c */
 
 extern _X_EXPORT void
diff --git a/fb/wfbrename.h b/fb/wfbrename.h
index c8e98c85c..f3beed8f6 100644
--- a/fb/wfbrename.h
+++ b/fb/wfbrename.h
@@ -179,7 +179,6 @@
 #define fbUnmapWindow wfbUnmapWindow
 #define fbUnrealizeFont wfbUnrealizeFont
 #define fbValidateGC wfbValidateGC
-#define fbWalkCompositeRegion wfbWalkCompositeRegion
 #define fbWinPrivateKeyRec wfbWinPrivateKeyRec
 #define fbZeroLine wfbZeroLine
 #define fbZeroSegment wfbZeroSegment