[[ Bug 13221 ]] Fix boundary issue in X-Y dilation.

runrevmark · runrevmark · commit c8e3d4bcb36f · 2014-08-27T08:49:39.000+01:00
diff --git a/docs/notes/bugfix-13221.md b/docs/notes/bugfix-13221.md
@@ -0,0 +1 @@
+# Artifacts can appear in bitmap effects when multicore rendering is used.
diff --git a/libgraphics/src/spread.cpp b/libgraphics/src/spread.cpp
@@ -269,6 +269,14 @@ void dilateDistanceXY(const uint8_t *src, uint8_t *dst, int xradius, int yradius
                 xdptr[x] = 0;
                 x++, next++;
             }
+            
+            // MW-2014-08-27: [[ Bug 13221 ]] If we reached the edge of the source, then we
+            //   assume the next pixel is clear.
+            if (next == width - 1)
+            {
+                xdptr[x] = 0;
+                x++, next++;
+            }
         }
 	}
     

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+# Artifacts can appear in bitmap effects when multicore rendering is used.`
Original file line number	Diff line number	Diff line change
`@@ -269,6 +269,14 @@ void dilateDistanceXY(const uint8_t src, uint8_t dst, int xradius, int yradius`
`269`	`269`	`xdptr[x] = 0;`
`270`	`270`	`x++, next++;`
`271`	`271`	`}`
	`272`	`+`
	`273`	`+ // MW-2014-08-27: [[ Bug 13221 ]] If we reached the edge of the source, then we`
	`274`	`+ // assume the next pixel is clear.`
	`275`	`+ if (next == width - 1)`
	`276`	`+ {`
	`277`	`+ xdptr[x] = 0;`
	`278`	`+ x++, next++;`
	`279`	`+ }`
`272`	`280`	`}`
`273`	`281`	`}`
`274`	`282`