nxagent: nxagent(Default)WindowIsVisible() are Booleans

nx-X11/programs/Xserver/hw/nxagent/Drawable.c

@@ -2309,7 +2309,7 @@ void nxagentCorruptedRegionOnWindow(void *p0, XID x, void *p2)
    * The window is not visible.
    */
 
-  if (nxagentWindowIsVisible(pWin) == 0)
+  if (!nxagentWindowIsVisible(pWin))
   {
     return;
   }

nx-X11/programs/Xserver/hw/nxagent/GCOps.c

@@ -699,8 +699,8 @@ RegionPtr nxagentCopyArea(DrawablePtr pSrcDrawable, DrawablePtr pDstDrawable,
    */
 
   if (!nxagentOption(IgnoreVisibility) && pDstDrawable -> type == DRAWABLE_WINDOW &&
-          (nxagentWindowIsVisible((WindowPtr) pDstDrawable) == 0 ||
-              (nxagentDefaultWindowIsVisible() == 0 && nxagentCompositeEnable == 0)))
+          (!nxagentWindowIsVisible((WindowPtr) pDstDrawable) ||
+              (!nxagentDefaultWindowIsVisible() && nxagentCompositeEnable == 0)))
   {
     #ifdef TEST
     fprintf(stderr, "nxagentCopyArea: Prevented operation on fully obscured window at [%p].\n",

nx-X11/programs/Xserver/hw/nxagent/Image.c

@@ -525,8 +525,8 @@ void nxagentPutImage(DrawablePtr pDrawable, GCPtr pGC, int depth,
    */
 
   if (!nxagentOption(IgnoreVisibility) && pDrawable -> type == DRAWABLE_WINDOW &&
-          (nxagentWindowIsVisible((WindowPtr) pDrawable) == 0 ||
-              (nxagentDefaultWindowIsVisible() == 0 && nxagentCompositeEnable == 0)))
+          (!nxagentWindowIsVisible((WindowPtr) pDrawable) ||
+              (!nxagentDefaultWindowIsVisible() && nxagentCompositeEnable == 0)))
   {
 
     #ifdef TEST

nx-X11/programs/Xserver/hw/nxagent/Pixels.h

@@ -173,8 +173,8 @@ FIXME: Changed macro: NXAGENT_SHOULD_DEFER_COMPOSITE
  */
 
 #define NXAGENT_SHOULD_SYNCHRONIZE_WINDOW(pDrawable)  \
-    (nxagentWindowIsVisible((WindowPtr) pDrawable) == 1 && \
-        (nxagentDefaultWindowIsVisible() == 1 || nxagentCompositeEnable == 1))
+    (nxagentWindowIsVisible((WindowPtr) pDrawable) && \
+        (nxagentDefaultWindowIsVisible() || nxagentCompositeEnable == 1))
 
 #define MINIMUM_PIXMAP_USAGE_COUNTER 2