2 files changed, 48 insertions, 16 deletions

diff --git a/nx-X11/programs/Xserver/render/filter.c b/nx-X11/programs/Xserver/render/filter.c
index 776bd4237..57a21a8c0 100644
--- a/nx-X11/programs/Xserver/render/filter.c
+++ b/nx-X11/programs/Xserver/render/filter.c
@@ -215,21 +215,30 @@ PictureFindFilter (ScreenPtr pScreen, char *name, int len)
 }
 
 static Bool
-convolutionFilterValidateParams (PicturePtr pPicture,
+convolutionFilterValidateParams (ScreenPtr pScreen,
                                  int	   filter,
                                  xFixed	   *params,
-                                 int	   nparams)
+                                 int	   nparams,
+                                 int*      width,
+                                 int*      height)
 {
+    int w, h;
+
     if (nparams < 3)
         return FALSE;
 
     if (xFixedFrac (params[0]) || xFixedFrac (params[1]))
         return FALSE;
 
+    w = xFixedToInt (params[0]);
+    h = xFixedToInt (params[1]);
+
     nparams -= 2;
-    if ((xFixedToInt (params[0]) * xFixedToInt (params[1])) > nparams)
+    if (w * h > nparams)
         return FALSE;
 
+    *width = w;
+    *height = h;
     return TRUE;
 }
 
@@ -271,10 +280,8 @@ PictureResetFilters (ScreenPtr pScreen)
 int
 SetPictureFilter (PicturePtr pPicture, char *name, int len, xFixed *params, int nparams)
 {
-    ScreenPtr     pScreen;
     PictFilterPtr pFilter;
-    xFixed        *new_params;
-    int           i;
+    ScreenPtr     pScreen;
 
     if (pPicture->pDrawable) {
         pScreen = pPicture->pDrawable->pScreen;
@@ -288,7 +295,7 @@ SetPictureFilter (PicturePtr pPicture, char *name, int len, xFixed *params, int
     if (!pFilter)
         return BadName;
 
-    if (!pPicture->pDrawable) {
+    if (pPicture->pDrawable == NULL) {
         int s;
 
         /* For source pictures, the picture isn't tied to a screen.  So, ensure
@@ -303,8 +310,25 @@ SetPictureFilter (PicturePtr pPicture, char *name, int len, xFixed *params, int
         }
     }
 
+    return SetPicturePictFilter (pPicture, pFilter, params, nparams);
+}
+
+int
+SetPicturePictFilter (PicturePtr pPicture, PictFilterPtr pFilter,
+                     xFixed *params, int nparams)
+{
+    ScreenPtr  pScreen;
+    int                i;
+
+    if (pPicture->pDrawable)
+       pScreen = pPicture->pDrawable->pScreen;
+    else
+       pScreen = screenInfo.screens[0];
+
     if (pFilter->ValidateParams) {
-        if (!(*pFilter->ValidateParams) (pPicture, pFilter->id, params, nparams))
+        int width, height;
+
+        if (!(*pFilter->ValidateParams) (pScreen, pFilter->id, params, nparams, &width, &height))
           return BadMatch;
     }
     else if (nparams) {
@@ -312,7 +336,7 @@ SetPictureFilter (PicturePtr pPicture, char *name, int len, xFixed *params, int
     }
 
     if (nparams != pPicture->filter_nparams) {
-        new_params = xalloc (nparams * sizeof (xFixed));
+        xFixed *new_params = xalloc (nparams * sizeof (xFixed));
 
         if (!new_params && nparams)
             return BadAlloc;
@@ -324,9 +348,10 @@ SetPictureFilter (PicturePtr pPicture, char *name, int len, xFixed *params, int
         pPicture->filter_params[i] = params[i];
     pPicture->filter = pFilter->id;
 
-    if (pPicture->pDrawable) {
-        PictureScreenPtr ps = GetPictureScreen (pScreen);
-        int result;
+    if (pPicture->pDrawable)
+    {
+        PictureScreenPtr    ps = GetPictureScreen(pScreen);
+        int                 result;
 
         result = (*ps->ChangePictureFilter) (pPicture, pPicture->filter,
                                              params, nparams);
@@ -335,5 +360,5 @@ SetPictureFilter (PicturePtr pPicture, char *name, int len, xFixed *params, int
     }
     pPicture->serialNumber |= GC_CHANGE_SERIAL_BIT;
 
-    return Success;
+    return ;
 }
diff --git a/nx-X11/programs/Xserver/render/picturestr.h b/nx-X11/programs/Xserver/render/picturestr.h
index 96c2b8abc..38d2cc5ec 100644
--- a/nx-X11/programs/Xserver/render/picturestr.h
+++ b/nx-X11/programs/Xserver/render/picturestr.h
@@ -168,12 +168,14 @@ typedef struct _Picture {
     SourcePictPtr   pSourcePict;
 } PictureRec;
 
-typedef Bool (*PictFilterValidateParamsProcPtr) (PicturePtr pPicture, int id,
-						 xFixed *params, int nparams);
+typedef Bool (*PictFilterValidateParamsProcPtr) (ScreenPtr pScreen, int id,
+						 xFixed *params, int nparams,
+                                                 int *width, int *height);
 typedef struct {
     char			    *name;
     int				    id;
     PictFilterValidateParamsProcPtr ValidateParams;
+    int width, height;
 } PictFilterRec, *PictFilterPtr;
 
 #define PictFilterNearest	0
@@ -457,7 +459,12 @@ PictFilterPtr
 PictureFindFilter (ScreenPtr pScreen, char *name, int len);
 
 int
-SetPictureFilter (PicturePtr pPicture, char *name, int len, xFixed *params, int nparams);
+SetPicturePictFilter (PicturePtr pPicture, PictFilterPtr pFilter,
+		      xFixed *params, int nparams);
+
+int
+SetPictureFilter (PicturePtr pPicture, char *name, int len,
+		  xFixed *params, int nparams);
 
 Bool
 PictureFinishInit (void);