Integration of DAMAGE-XFIXES branch to trunk

https://freedesktop.org/bugzilla/show_bug.cgi?id=859
These RENDER changes come from the experimental freedesktop tree formerly
    known as "Xserver". Partly motivated by compatibility with DAMAGE as
    pulled from that tree, also some of the code just is better
    implemented.
Modified Files: filter.c picture.c picture.h picturestr.h

render/filter.c

@@ -1,7 +1,7 @@
 /*
- * $XFree86$
+ * $Id$
  *
- * Copyright © 2002 Keith Packard, member of The XFree86 Project, Inc.
+ * Copyright © 2002 Keith Packard
  *
  * Permission to use, copy, modify, distribute, and sell this software and its
  * documentation for any purpose is hereby granted without fee, provided that
@@ -22,6 +22,9 @@
  * PERFORMANCE OF THIS SOFTWARE.
  */
 
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
 #include "misc.h"
 #include "scrnintstr.h"
 #include "os.h"
@@ -40,6 +43,12 @@
 static char **filterNames;
 static int  nfilterNames;
 
+/*
+ * standard but not required filters don't have constant indices
+ */
+
+int pictFilterConvolution;
+
 int
 PictureGetFilterId (char *filter, int len, Bool makeit)
 {
@@ -50,15 +59,14 @@ PictureGetFilterId (char *filter, int len, Bool makeit)
     if (len < 0)
 	len = strlen (filter);
     for (i = 0; i < nfilterNames; i++)
-	if (len == strlen (filterNames[i]) && 
+	if (!CompareISOLatin1Lowered ((unsigned char *) filterNames[i], -1, (unsigned char *) filter, len))
-	    !strncmp (filterNames[i], filter, len))
 	    return i;
     if (!makeit)
 	return -1;
-    name = xalloc (strlen (filter) + 1);
+    name = xalloc (len + 1);
     if (!name)
 	return -1;
-    strncpy (name, filter, len);
+    memcpy (name, filter, len);
     name[len] = '\0';
     if (filterNames)
 	names = xrealloc (filterNames, (nfilterNames + 1) * sizeof (char *));
@@ -116,7 +124,9 @@ PictureFreeFilterIds (void)
 }
 
 int
-PictureAddFilter (ScreenPtr pScreen, char *filter, xFixed *params, int nparams)
+PictureAddFilter (ScreenPtr			    pScreen,
+		  char				    *filter,
+		  PictFilterValidateParamsProcPtr   ValidateParams)
 {
     PictureScreenPtr    ps = GetPictureScreen(pScreen);
     int			id = PictureGetFilterId (filter, -1,  TRUE);
@@ -140,9 +150,8 @@ PictureAddFilter (ScreenPtr pScreen, char *filter, xFixed *params, int nparams)
     ps->filters = filters;
     i = ps->nfilters++;
     ps->filters[i].name = PictureGetFilterName (id);
-    ps->filters[i].params = params;
-    ps->filters[i].nparams = nparams;
     ps->filters[i].id = id;
+    ps->filters[i].ValidateParams = ValidateParams;
     return id;
 }
 
@@ -209,9 +218,9 @@ PictureSetDefaultFilters (ScreenPtr pScreen)
     if (!filterNames)
 	if (!PictureSetDefaultIds ())
 	    return FALSE;
-    if (PictureAddFilter (pScreen, FilterNearest, 0, 0) < 0)
+    if (PictureAddFilter (pScreen, FilterNearest, 0) < 0)
 	return FALSE;
-    if (PictureAddFilter (pScreen, FilterBilinear, 0, 0) < 0)
+    if (PictureAddFilter (pScreen, FilterBilinear, 0) < 0)
 	return FALSE;
 
     if (!PictureSetFilterAlias (pScreen, FilterNearest, FilterFast))
@@ -243,21 +252,25 @@ SetPictureFilter (PicturePtr pPicture, char *name, int len, xFixed *params, int
 
     if (!pFilter)
 	return BadName;
-    if (nparams > pFilter->nparams)
+    if (pFilter->ValidateParams)
-	return BadMatch;
-    if (pFilter->nparams != pPicture->filter_nparams)
     {
-	new_params = xalloc (pFilter->nparams * sizeof (xFixed));
+	if (!(*pFilter->ValidateParams) (pPicture, pFilter->id, params, nparams))
+	    return BadMatch;
+    }
+    else if (nparams)
+	return BadMatch;
+
+    if (nparams != pPicture->filter_nparams)
+    {
+	new_params = xalloc (nparams * sizeof (xFixed));
 	if (!new_params)
 	    return BadAlloc;
 	xfree (pPicture->filter_params);
 	pPicture->filter_params = new_params;
-	pPicture->filter_nparams = pFilter->nparams;
+	pPicture->filter_nparams = nparams;
     }
     for (i = 0; i < nparams; i++)
 	pPicture->filter_params[i] = params[i];
-    for (; i < pFilter->nparams; i++)
-	pPicture->filter_params[i] = pFilter->params[i];
     pPicture->filter = pFilter->id;
     return Success;
 }

render/picture.c

@@ -23,6 +23,9 @@
  * Author:  Keith Packard, SuSE, Inc.
  */
 
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
 #include "misc.h"
 #include "scrnintstr.h"
 #include "os.h"
@@ -420,7 +423,7 @@ PictureCreateDefaultFormats (ScreenPtr pScreen, int *nformatp)
 	case PICT_TYPE_COLOR:
 	case PICT_TYPE_GRAY:
 	    pFormats[f].type = PictTypeIndexed;
-	    pFormats[f].index.pVisual = &pScreen->visuals[PICT_FORMAT_VIS(format)];
+	    pFormats[f].index.vid = pScreen->visuals[PICT_FORMAT_VIS(format)].vid;
 	    break;
 	}
     }
@@ -428,6 +431,21 @@ PictureCreateDefaultFormats (ScreenPtr pScreen, int *nformatp)
     return pFormats;
 }
 
+static VisualPtr
+PictureFindVisual (ScreenPtr pScreen, VisualID visual)
+{
+    int         i;
+    VisualPtr   pVisual;
+    for (i = 0, pVisual = pScreen->visuals;
+         i < pScreen->numVisuals;
+         i++, pVisual++)
+    {
+        if (pVisual->vid == visual)
+            return pVisual;
+    }
+    return 0;
+}
+
 Bool
 PictureInitIndexedFormats (ScreenPtr pScreen)
 {
@@ -443,13 +461,16 @@ PictureInitIndexedFormats (ScreenPtr pScreen)
     {
 	if (format->type == PictTypeIndexed && !format->index.pColormap)
 	{
-	    if (format->index.pVisual->vid == pScreen->rootVisual)
+	    if (format->index.vid == pScreen->rootVisual)
 		format->index.pColormap = (ColormapPtr) LookupIDByType(pScreen->defColormap,
 								       RT_COLORMAP);
 	    else
 	    {
+                VisualPtr   pVisual;
+
+                pVisual = PictureFindVisual (pScreen, format->index.vid);
 		if (CreateColormap (FakeClientID (0), pScreen,
-				    format->index.pVisual,
+				    pVisual,
 				    &format->index.pColormap, AllocNone,
 				    0) != Success)
 		{
@@ -533,7 +554,7 @@ PictureMatchVisual (ScreenPtr pScreen, int depth, VisualPtr pVisual)
 	{
 	    if (type == PictTypeIndexed)
 	    {
-		if (format->index.pVisual == pVisual)
+		if (format->index.vid == pVisual->vid)
 		    return format;
 	    }
 	    else
@@ -638,7 +659,8 @@ PictureInit (ScreenPtr pScreen, PictFormatPtr formats, int nformats)
 	}
 	if (formats[n].type == PictTypeIndexed)
 	{
-	    if ((formats[n].index.pVisual->class | DynamicClass) == PseudoColor)
+            VisualPtr   pVisual = PictureFindVisual (pScreen, formats[n].index.vid);
+	    if ((pVisual->class | DynamicClass) == PseudoColor)
 		type = PICT_TYPE_COLOR;
 	    else
 		type = PICT_TYPE_GRAY;
@@ -1079,6 +1101,51 @@ SetPictureClipRects (PicturePtr	pPicture,
     return result;
 }
 
+int
+SetPictureClipRegion (PicturePtr    pPicture,
+                      int           xOrigin,
+                      int           yOrigin,
+                      RegionPtr     pRegion)
+{
+    ScreenPtr           pScreen = pPicture->pDrawable->pScreen;
+    PictureScreenPtr    ps = GetPictureScreen(pScreen);
+    RegionPtr           clientClip;
+    int                 result;
+    int                 type;
+
+    if (pRegion)
+    {
+        type = CT_REGION;
+        clientClip = REGION_CREATE (pScreen,
+                                    REGION_EXTENTS(pScreen, pRegion),
+                                    REGION_NUM_RECTS(pRegion));
+        if (!clientClip)
+            return BadAlloc;
+        if (!REGION_COPY (pSCreen, clientClip, pRegion))
+        {
+            REGION_DESTROY (pScreen, clientClip);
+            return BadAlloc;
+        }
+    }
+    else
+    {
+        type = CT_NONE;
+        clientClip = 0;
+    }
+
+    result =(*ps->ChangePictureClip) (pPicture, type,
+                                      (pointer) clientClip, 0);
+    if (result == Success)
+    {
+        pPicture->clipOrigin.x = xOrigin;
+        pPicture->clipOrigin.y = yOrigin;
+        pPicture->stateChanges |= CPClipXOrigin|CPClipYOrigin|CPClipMask;
+        pPicture->serialNumber |= GC_CHANGE_SERIAL_BIT;
+    }
+    return result;
+}
+
+
 int
 SetPictureTransform (PicturePtr	    pPicture,
 		     PictTransform  *transform)

render/picture.h

@@ -160,6 +160,9 @@ extern int  PictureCmapPolicy;
 
 int	PictureParseCmapPolicy (const char *name);
 
+extern int	RenderErrBase;
+extern int	RenderClientPrivateIndex;
+
 /* Fixed point updates from Carl Worth, USC, Information Sciences Institute */
 
 #ifdef WIN32

render/picturestr.h

@@ -1,6 +1,5 @@
-/* $XdotOrg: xc/programs/Xserver/render/picturestr.h,v 1.2 2004/04/23 19:54:29 eich Exp $ */
 /*
- * $XFree86: xc/programs/Xserver/render/picturestr.h,v 1.21 2002/11/06 22:45:36 keithp Exp $
+ * $Id$
  *
  * Copyright © 2000 SuSE, Inc.
  *
@@ -39,7 +38,7 @@ typedef struct _DirectFormat {
 } DirectFormatRec;
 
 typedef struct _IndexFormat {
-    VisualPtr	    pVisual;
+    VisualID	    vid;
     ColormapPtr	    pColormap;
     int		    nvalues;
     xIndexValue	    *pValues;
@@ -103,11 +102,12 @@ typedef struct _Picture {
     int		    filter_nparams;
 } PictureRec;
 
+typedef Bool (*PictFilterValidateParamsProcPtr) (PicturePtr pPicture, int id,
+						 xFixed *params, int nparams);
 typedef struct {
     char			    *name;
-    xFixed	    *params;
-    int		    nparams;
     int				    id;
+    PictFilterValidateParamsProcPtr ValidateParams;
 } PictFilterRec, *PictFilterPtr;
 
 #define PictFilterNearest	0
@@ -303,15 +303,6 @@ extern RESTYPE		GlyphSetType;
     } \
 } \
 
-void
-ResetPicturePrivateIndex (void);
-
-int
-AllocatePicturePrivateIndex (void);
-
-Bool
-AllocatePicturePrivate (ScreenPtr pScreen, int index2, unsigned int amount);
-
 Bool
 PictureDestroyWindow (WindowPtr pWindow);
 
@@ -349,7 +340,9 @@ char *
 PictureGetFilterName (int id);
 
 int
-PictureAddFilter (ScreenPtr pScreen, char *filter, xFixed *params, int nparams);
+PictureAddFilter (ScreenPtr			    pScreen,
+		  char				    *filter,
+		  PictFilterValidateParamsProcPtr   ValidateParams);
 
 Bool
 PictureSetFilterAlias (ScreenPtr pScreen, char *filter, char *alias);
@@ -404,6 +397,12 @@ SetPictureClipRects (PicturePtr	pPicture,
 		     int	nRect,
 		     xRectangle	*rects);
 
+int
+SetPictureClipRegion (PicturePtr    pPicture,
+		      int	    xOrigin,
+		      int	    yOrigin,
+		      RegionPtr	    pRegion);
+
 int
 SetPictureTransform (PicturePtr	    pPicture,
 		     PictTransform  *transform);