Imported nxagent-3.1.0-2.tar.gznxagent/3.1.0-2

Summary: Imported nxagent-3.1.0-2.tar.gz
Keywords:

Imported nxagent-3.1.0-2.tar.gz
into Git repository

1 files changed, 2810 insertions, 0 deletions

diff --git a/nx-X11/programs/Xserver/hw/nxagent/Render.c b/nx-X11/programs/Xserver/hw/nxagent/Render.c
new file mode 100644
index 000000000..b1ff219e7
--- /dev/null
+++ b/nx-X11/programs/Xserver/hw/nxagent/Render.c
@@ -0,0 +1,2810 @@
+/**************************************************************************/
+/*                                                                        */
+/* Copyright (c) 2001, 2007 NoMachine, http://www.nomachine.com/.         */
+/*                                                                        */
+/* NXAGENT, NX protocol compression and NX extensions to this software    */
+/* are copyright of NoMachine. Redistribution and use of the present      */
+/* software is allowed according to terms specified in the file LICENSE   */
+/* which comes in the source distribution.                                */
+/*                                                                        */
+/* Check http://www.nomachine.com/licensing.html for applicability.       */
+/*                                                                        */
+/* NX and NoMachine are trademarks of NoMachine S.r.l.                    */
+/*                                                                        */
+/* All rights reserved.                                                   */
+/*                                                                        */
+/**************************************************************************/
+
+#include "NXpicturestr.h"
+#include "NXglyphstr.h"
+
+#include "Render.h"
+
+#include "X.h"
+#include "Xproto.h"
+
+#include "render.h"
+#include "renderproto.h"
+
+#include "mi.h"
+#include "fb.h"
+#include "mipict.h"
+#include "fbpict.h"
+#include "dixstruct.h"
+
+#include "Agent.h"
+#include "Drawable.h"
+#include "Trap.h"
+#include "Args.h"
+
+#define Atom   XlibAtom
+#define Pixmap XlibPixmap
+#include "../../../../lib/Xrender/Xrenderint.h"
+#undef  Atom
+#undef  Pixmap
+
+#include "region.h"
+#include "extutil.h"
+
+#include "Display.h"
+#include "Pixmaps.h"
+#include "Cursor.h"
+#include "Client.h"
+#include "Image.h"
+#include "Pixels.h"
+#include "Handlers.h"
+
+#include "NXproto.h"
+
+#define MAX_FORMATS 255
+
+#define NXAGENT_PICTURE_ALWAYS_POINTS_TO_VIRTUAL
+
+/*
+ * Define if you want split multiple glyph lists
+ * into multiple RenderCompositeGlyphs requests.
+ */
+
+#undef  SPLIT_GLYPH_LISTS
+
+/*
+ * Set here the required log level.
+ */
+
+#define PANIC
+#define WARNING
+#undef  TEST
+#undef  DEBUG
+
+/*
+FIXME: Most operations don't seem to produce any visible result
+       but still generate tons of traffic.
+*/
+#undef  SKIP_LOUSY_RENDER_OPERATIONS
+#undef  SKIP_REALLY_ALL_LOUSY_RENDER_OPERATIONS
+
+/*
+ * Do we split the big trapezoid requests?
+ */
+
+#define TRAPEZOIDS_PER_REQUEST  256
+
+/*
+ * Margin added around the glyphs extent (in pixels).
+ */
+
+#define GLYPH_BOX_MARGIN 2
+
+int nxagentRenderEnable = UNDEFINED;
+int nxagentRenderVersionMajor;
+int nxagentRenderVersionMinor;
+
+int nxagentPicturePrivateIndex = 0;
+
+#ifndef NXAGENT_UPGRADE
+static int picturePrivateCount = 0;
+#endif
+
+static int nxagentNumFormats = 0;
+
+static XRenderPictFormat nxagentArrayFormats[MAX_FORMATS];
+
+XRenderPictFormat *nxagentMatchingFormats(PictFormatPtr pForm);
+
+BoxPtr nxagentGlyphsExtents;
+BoxPtr nxagentTrapezoidExtents;
+
+#ifdef DEBUG
+
+static void nxagentPrintFormat(XRenderPictFormat *pFormat);
+
+#endif
+
+/*
+ * From NXglyph.c.
+ */
+
+extern const CARD8 glyphDepths[];
+
+/*
+ * From NXdispatch.c.
+ */
+
+extern void BitOrderInvert(unsigned char *data, int nbytes);
+
+/*
+ * Other functions defined here.
+ */
+
+void nxagentQueryFormats(void);
+
+void nxagentCreateGlyphSet(GlyphSetPtr pGly);
+
+int nxagentCursorSaveRenderInfo(ScreenPtr pScreen, CursorPtr pCursor);
+
+void nxagentCursorPostSaveRenderInfo(CursorPtr pCursor, ScreenPtr pScreen,
+                                         PicturePtr pPicture, int x, int y);
+
+int nxagentCreatePicture(PicturePtr pPicture, Mask mask);
+
+void nxagentDestroyPicture(PicturePtr pPicture);
+
+int nxagentChangePictureClip(PicturePtr pPicture, int clipType, int nRects,
+                                 xRectangle *rects, int xOrigin, int yOrigin);
+
+void nxagentDestroyPictureClip(PicturePtr pPicture);
+
+void nxagentValidatePicture(PicturePtr pPicture, Mask mask);
+
+void nxagentComposite(CARD8 op, PicturePtr pSrc, PicturePtr pMask, PicturePtr pDst,
+                          INT16 xSrc, INT16 ySrc, INT16 xMask, INT16 yMask, INT16 xDst,
+                              INT16 yDst, CARD16 width, CARD16 height);
+
+void nxagentGlyphs(CARD8 op, PicturePtr pSrc, PicturePtr pDst,
+                       PictFormatPtr maskFormat, INT16 xSrc, INT16 ySrc, int nlists,
+                           XGlyphElt8 *elts, int sizeID, GlyphPtr *glyphsBase);
+
+void nxagentCompositeRects(CARD8 op, PicturePtr pDst, xRenderColor *color,
+                               int nRect, xRectangle *rects);
+
+void nxagentTrapezoids(CARD8 op, PicturePtr pSrc, PicturePtr pDst,
+                           PictFormatPtr maskFormat, INT16 xSrc, INT16 ySrc,
+                               int ntrap, xTrapezoid *traps);
+
+void nxagentRasterizeTrapezoid(PicturePtr pMask, xTrapezoid *trap,
+                                   int x_off, int y_off);
+
+void nxagentTriangles(CARD8 op, PicturePtr pSrc, PicturePtr pDst,
+                          PictFormatPtr maskFormat, INT16 xSrc, INT16 ySrc,
+                              int ntri, xTriangle *tris);
+
+void nxagentTriStrip(CARD8 op, PicturePtr pSrc, PicturePtr pDst,
+                         PictFormatPtr  maskFormat, INT16 xSrc, INT16 ySrc,
+                             int npoint, xPointFixed *points);
+
+void nxagentChangePicture(PicturePtr pPicture, Mask mask);
+
+void nxagentTriFan(CARD8 op, PicturePtr pSrc, PicturePtr pDst,
+                       PictFormatPtr maskFormat, INT16 xSrc, INT16 ySrc,
+                           int npoint, xPointFixed *points);
+
+void nxagentReferenceGlyphSet(GlyphSetPtr glyphSet);
+
+void nxagentFreeGlyphs(GlyphSetPtr glyphSet, CARD32 *gids, int nglyph);
+
+void nxagentFreeGlyphSet(GlyphSetPtr glyphSet);
+
+void nxagentSetPictureTransform(PicturePtr pPicture, pointer transform);
+
+void nxagentSetPictureFilter(PicturePtr pPicture, char *filter, int name_size,
+                                 pointer params, int nparams);
+
+Bool nxagentReconnectAllGlyphSet(void *p);
+
+Bool nxagentReconnectAllPicture(void *);
+
+Bool nxagentDisconnectAllPicture(void);
+
+void nxagentRenderExtensionInit()
+{
+  int first_event, first_error;
+  int major_version, minor_version;
+
+  if (XRenderQueryExtension(nxagentDisplay, &first_event, &first_error))
+  {
+    XRenderQueryVersion(nxagentDisplay, &major_version, &minor_version);
+
+    /*
+     * As the RENDER requests are passed directly to
+     * the remote X server this can cause problems if 
+     * our RENDER version is different from the version
+     * supported by the remote. For this reasos let's
+     * advertise to our clients the lowest between the
+     + two versions.
+     */
+
+    if (major_version > RENDER_MAJOR || 
+            (major_version == RENDER_MAJOR &&
+                 minor_version > RENDER_MINOR))
+    {
+      #ifdef TEST
+      fprintf(stderr, "nxagentRenderExtensionInit: Using render version [%d.%d] with "
+                  "remote version [%d.%d].\n", RENDER_MAJOR, RENDER_MINOR,
+                      major_version, minor_version);
+      #endif
+
+      nxagentRenderVersionMajor = RENDER_MAJOR;
+      nxagentRenderVersionMinor = RENDER_MINOR;
+    }
+    else if (major_version < RENDER_MAJOR ||
+                 (major_version == RENDER_MAJOR &&
+                      minor_version < RENDER_MINOR))
+    {
+      #ifdef TEST
+      fprintf(stderr, "Info: Local render version %d.%d is higher "
+                  "than remote version %d.%d.\n", RENDER_MAJOR, RENDER_MINOR,
+                      major_version, minor_version);
+
+      fprintf(stderr, "Info: Lowering the render version reported to clients.\n");
+      #endif
+
+      nxagentRenderVersionMajor = major_version;
+      nxagentRenderVersionMinor = minor_version;
+    }
+    else
+    {
+      #ifdef TEST
+      fprintf(stderr, "nxagentRenderExtensionInit: Local render version %d.%d "
+                  "matches remote version %d.%d.\n", RENDER_MAJOR, RENDER_MINOR,
+                      major_version, minor_version);
+      #endif
+
+      nxagentRenderVersionMajor = major_version;
+      nxagentRenderVersionMinor = minor_version;
+    }
+  }
+  else
+  {
+    #ifdef WARNING
+    fprintf(stderr, "Warning: Render not available on the remote display.\n");
+    #endif
+
+    nxagentRenderEnable = False;
+  }
+}
+
+int nxagentCursorSaveRenderInfo(ScreenPtr pScreen, CursorPtr pCursor)
+{
+  pCursor -> devPriv[pScreen -> myNum] = xalloc(sizeof(nxagentPrivCursor));
+
+  if (nxagentCursorPriv(pCursor, pScreen) == NULL)
+  {
+    FatalError("xalloc failed");
+  }
+
+  nxagentCursorUsesRender(pCursor, pScreen) = 1;
+  nxagentCursorPicture(pCursor, pScreen) = NULL;
+
+  return 1;
+}
+
+void nxagentCursorPostSaveRenderInfo(CursorPtr pCursor, ScreenPtr pScreen,
+                                         PicturePtr pPicture, int x, int y)
+{
+  nxagentCursorPicture(pCursor, pScreen) = pPicture;
+  nxagentCursorXOffset(pCursor, pScreen) = x;
+  nxagentCursorYOffset(pCursor, pScreen) = y;
+}
+
+int nxagentRenderRealizeCursor(ScreenPtr pScreen, CursorPtr pCursor)
+{
+  int cid;
+  int x, y;
+
+  PicturePtr pPicture;
+
+  pPicture = nxagentCursorPicture(pCursor, pScreen);
+
+  pPicture -> refcnt++;
+
+  x = nxagentCursorXOffset(pCursor, pScreen);
+  y = nxagentCursorYOffset(pCursor, pScreen);
+
+  /*
+   * Set the lossless trap so that the image functions
+   * will not try to encode the image using a lossy
+   * compression. Drawables should have a quality flag,
+   * telling if they were originally encoded with a
+   * lossy algorithm. This would allow us to skip the
+   * synchronization if the cursor was already encoded
+   * with the best quality.
+   */
+
+  #ifdef TEST
+  fprintf(stderr, "nxagentRenderRealizeCursor: Forcing the synchronization "
+              "of the cursor.\n");
+  #endif
+
+  nxagentMarkCorruptedRegion(pPicture -> pDrawable, NULL);
+
+  nxagentLosslessTrap = 1;
+
+  nxagentSynchronizeDrawable(pPicture -> pDrawable, DO_WAIT, NEVER_BREAK, NULL);
+
+  nxagentLosslessTrap = 0;
+
+  cid = XRenderCreateCursor(nxagentDisplay, nxagentPicture(pPicture), x, y);
+
+  nxagentCursor(pCursor, pScreen) = cid;
+
+  return 1;
+}
+
+int nxagentCreatePicture(PicturePtr pPicture, Mask mask)
+{
+  XRenderPictureAttributes attributes;
+  unsigned long            valuemask=0;
+  XRenderPictFormat        *pForm;
+
+  Picture id;
+
+  #ifdef DEBUG
+  fprintf(stderr, "nxagentCreatePicture: Function called with picture at [%p] and mask [%ld].\n",
+              (void *) pPicture, mask);
+  #endif
+
+  if (pPicture == NULL)
+  {
+    return 0;
+  }
+
+  #ifdef DEBUG
+
+  if (pPicture -> pDrawable -> type == DRAWABLE_PIXMAP)
+  {
+     if (nxagentIsShmPixmap((PixmapPtr)pPicture -> pDrawable))
+     {
+       fprintf (stderr, "nxagentCreatePicture: Picture uses a shared pixmap.\n");
+     }
+     else
+     {
+       fprintf (stderr, "nxagentCreatePicture: Picture uses a plain pixmap.\n");
+     }
+  }
+  else
+  {
+     fprintf (stderr, "nxagentCreatePicture: Picture uses a window.\n");
+  }
+
+  #endif
+
+  /*
+   * All the picture default values are 0.
+   */
+
+  memset(&(nxagentPicturePriv(pPicture) -> lastServerValues), 0, sizeof(XRenderPictureAttributes));
+
+  if (mask & CPRepeat)
+  {
+    attributes.repeat = (Bool)pPicture -> repeat;
+
+    valuemask |= CPRepeat;
+
+    nxagentSetPictureRemoteValue(pPicture, repeat, attributes.repeat);
+  }
+
+  if (mask & CPAlphaMap)
+  {
+    attributes.alpha_map = nxagentPicturePriv(pPicture -> alphaMap) -> picture;
+
+    valuemask |= CPAlphaMap;
+
+    nxagentSetPictureRemoteValue(pPicture, alpha_map, attributes.alpha_map);
+  }
+
+  if (mask & CPAlphaXOrigin)
+  {
+    attributes.alpha_x_origin = pPicture -> alphaOrigin.x;
+
+    valuemask |= CPAlphaXOrigin;
+
+    nxagentSetPictureRemoteValue(pPicture, alpha_x_origin, attributes.alpha_x_origin);
+  }
+
+  if (mask & CPAlphaYOrigin)
+  {
+    attributes.alpha_y_origin = pPicture -> alphaOrigin.y;
+
+    valuemask |= CPAlphaYOrigin;
+
+    nxagentSetPictureRemoteValue(pPicture, alpha_y_origin, attributes.alpha_y_origin);
+  }
+
+  if (mask & CPClipXOrigin)
+  {
+    attributes.clip_x_origin = pPicture -> clipOrigin.x;
+
+    valuemask |= CPClipXOrigin;
+
+    nxagentSetPictureRemoteValue(pPicture, clip_x_origin, attributes.clip_x_origin);
+  }
+
+  if (mask & CPClipYOrigin)
+  {
+    attributes.clip_y_origin = pPicture -> clipOrigin.y;
+
+    valuemask |= CPClipYOrigin;
+
+    nxagentSetPictureRemoteValue(pPicture, clip_y_origin, attributes.clip_y_origin);
+  }
+
+  if (mask & CPGraphicsExposure)
+  {
+    attributes.graphics_exposures = (Bool)pPicture -> graphicsExposures;
+
+    valuemask |= CPGraphicsExposure;
+
+    nxagentSetPictureRemoteValue(pPicture, graphics_exposures, attributes.graphics_exposures);
+  }
+
+  if (mask & CPSubwindowMode)
+  {
+    attributes.subwindow_mode = pPicture -> subWindowMode;
+
+    valuemask |= CPSubwindowMode;
+
+    nxagentSetPictureRemoteValue(pPicture, subwindow_mode, attributes.subwindow_mode);
+  }
+
+  if (mask & CPClipMask)
+  {
+    attributes.clip_mask = None;
+
+    valuemask |= CPClipMask;
+
+    nxagentSetPictureRemoteValue(pPicture, clip_mask, attributes.clip_mask);
+  }
+
+  if (mask & CPPolyEdge)
+  {
+    attributes.poly_edge = pPicture -> polyEdge;
+
+    valuemask |= CPPolyEdge;
+
+    nxagentSetPictureRemoteValue(pPicture, poly_edge, attributes.poly_edge);
+  }
+
+  if (mask & CPPolyMode)
+  {
+    attributes.poly_mode = pPicture -> polyMode;
+
+    valuemask |= CPPolyMode;
+
+    nxagentSetPictureRemoteValue(pPicture, poly_mode, attributes.poly_mode);
+  }
+
+  if (mask & CPDither)
+  {
+    attributes.dither = pPicture -> dither;
+
+    valuemask |= CPDither;
+
+    nxagentSetPictureRemoteValue(pPicture, dither, attributes.dither);
+  }
+
+  if (mask & CPComponentAlpha)
+  {
+    attributes.component_alpha = pPicture -> componentAlpha;
+
+    valuemask |= CPComponentAlpha;
+
+    nxagentSetPictureRemoteValue(pPicture, component_alpha, attributes.component_alpha);
+  }
+
+  pForm = NULL;
+
+  if (pPicture -> pFormat != NULL)
+  {
+    pForm = nxagentMatchingFormats(pPicture -> pFormat);
+
+    #ifdef DEBUG
+
+    nxagentPrintFormat(pForm);
+
+    #endif
+  }
+
+  if (pForm == NULL)
+  {
+    fprintf(stderr, "nxagentCreatePicture: WARNING! The requested format was not found.\n");
+
+    return 0;
+  }
+
+  id = XRenderCreatePicture(nxagentDisplay,
+                            nxagentDrawable(pPicture -> pDrawable),
+                            pForm,
+                            valuemask,
+                            &attributes);
+
+  #ifdef TEST
+  fprintf(stderr, "nxagentCreatePicture: Created picture at [%p] with drawable at [%p].\n",
+              (void *) pPicture, (void *) pPicture -> pDrawable);
+  #endif
+
+  #ifdef DEBUG
+
+  XSync(nxagentDisplay, 0);
+
+  #endif
+
+  nxagentPicturePriv(pPicture) -> picture = id;
+
+  if (nxagentAlphaEnabled == 1 && pPicture -> pDrawable->depth == 32 &&
+          pPicture -> pFormat -> direct.alpha != 0)
+  {
+    if (pPicture -> pDrawable -> type == DRAWABLE_PIXMAP)
+    {
+      nxagentPixmapPriv(nxagentRealPixmap((PixmapPtr) pPicture -> pDrawable)) -> pPicture = pPicture;
+    }
+    else if (pPicture -> pDrawable -> type == DRAWABLE_WINDOW)
+    {
+      nxagentWindowPriv((WindowPtr) pPicture -> pDrawable) -> pPicture = pPicture;
+    }
+  }
+
+  return 1;
+}
+
+XRenderPictFormat *nxagentMatchingFormats(PictFormatPtr pFormat)
+{
+  int i;
+
+  for (i = 0; i < nxagentNumFormats; i++)
+  {
+    if (pFormat -> type == nxagentArrayFormats[i].type &&
+        pFormat -> depth == nxagentArrayFormats[i].depth &&
+        pFormat -> direct.red == nxagentArrayFormats[i].direct.red &&
+        pFormat -> direct.green == nxagentArrayFormats[i].direct.green &&
+        pFormat -> direct.blue == nxagentArrayFormats[i].direct.blue &&
+        pFormat -> direct.redMask == nxagentArrayFormats[i].direct.redMask &&
+        pFormat -> direct.greenMask == nxagentArrayFormats[i].direct.greenMask &&
+        pFormat -> direct.blueMask == nxagentArrayFormats[i].direct.blueMask &&
+        pFormat -> direct.alpha == nxagentArrayFormats[i].direct.alpha &&
+        pFormat -> direct.alphaMask == nxagentArrayFormats[i].direct.alphaMask)
+    {
+      return &nxagentArrayFormats[i];
+    }
+  }
+
+  #ifdef DEBUG
+  fprintf(stderr, "nxagentMatchingFormats: The requested format was not found.\n");
+  #endif
+
+  return NULL;
+}
+
+void nxagentDestroyPicture(PicturePtr pPicture)
+{
+  #ifdef TEST
+  fprintf(stderr, "nxagentDestroyPicture: Going to destroy picture at [%p].\n",
+              (void *) pPicture);
+  #endif
+
+  if (pPicture == NULL)
+  {
+    return;
+  }
+
+  XRenderFreePicture(nxagentDisplay,
+                     nxagentPicturePriv(pPicture) -> picture);
+  
+  #ifdef DEBUG
+
+  XSync(nxagentDisplay, 0);
+
+  #endif
+}
+
+int nxagentChangePictureClip(PicturePtr pPicture, int clipType, int nRects,
+                                 xRectangle *rects, int xOrigin, int yOrigin)
+{
+  #ifdef TEST
+  fprintf(stderr, "nxagentChangePictureClip: Going to change clip of picture at [%p].\n",
+              (void *) pPicture);
+  #endif
+
+  #ifdef DEBUG
+  fprintf(stderr, "nxagentChangePictureClip: clipType [%d] nRects [%d] xRectangle [%p] "
+              "xOrigin [%d] yOrigin [%d].\n", clipType, nRects, (void *) rects, xOrigin, yOrigin);
+  #endif
+
+  if (pPicture == NULL)
+  {
+    return 0;
+  }
+
+  switch (clipType)
+  {
+    case CT_PIXMAP:
+    {
+      #ifdef DEBUG
+      fprintf(stderr, "nxagentChangePictureClip: Clip type is [CT_PIXMAP].\n");
+      #endif      
+  
+      /*
+       * if(!nRects)
+       * {
+       *   return 0;
+       * }
+       */
+/*
+FIXME: Is this useful or just a waste of bandwidth?
+
+       Apparently useless with QT.
+*/
+      #ifndef SKIP_LOUSY_RENDER_OPERATIONS
+
+      XRenderSetPictureClipRectangles(nxagentDisplay,
+                                      nxagentPicturePriv(pPicture) -> picture,
+                                      xOrigin,
+                                      yOrigin,
+                                      (XRectangle*)rects,
+                                      nRects);
+
+      nxagentSetPictureRemoteValue(pPicture, clip_x_origin, xOrigin);
+      nxagentSetPictureRemoteValue(pPicture, clip_y_origin, yOrigin);
+      nxagentSetPictureRemoteValue(pPicture, clip_mask, 1);
+
+      #endif
+
+      #ifdef DEBUG
+
+      XSync(nxagentDisplay, 0);
+
+      #endif
+
+      break;
+    }   
+    case CT_NONE:
+    {
+      #ifdef DEBUG
+      fprintf(stderr, "nxagentChangePictureClip: Clip type is [CT_NONE].\n");
+      #endif
+/*
+FIXME: Is this useful or just a waste of bandwidth?
+
+       Apparently useless with QT.
+*/
+      #ifndef SKIP_LOUSY_RENDER_OPERATIONS
+
+      XRenderSetPictureClipRectangles(nxagentDisplay,
+                                      nxagentPicturePriv(pPicture) -> picture,
+                                      xOrigin,
+                                      yOrigin,
+                                      (XRectangle*)rects,
+                                      nRects);
+
+      nxagentSetPictureRemoteValue(pPicture, clip_x_origin, xOrigin);
+      nxagentSetPictureRemoteValue(pPicture, clip_y_origin, yOrigin);
+      nxagentSetPictureRemoteValue(pPicture, clip_mask, 1);
+
+      #endif
+
+      #ifdef DEBUG
+
+      XSync(nxagentDisplay, 0);
+
+      #endif
+
+      break;
+    }
+    case CT_REGION:
+    {
+      Region     reg;
+      XRectangle rectangle;
+      int        index;
+
+      #ifdef DEBUG
+      fprintf(stderr, "nxagentChangePictureClip: Clip type is [CT_REGION].\n");
+      #endif
+    
+      reg = XCreateRegion();
+
+      for (index = 0; index <= nRects; index++, rects++)
+      {
+        rectangle.x = rects -> x;
+        rectangle.y = rects -> y;
+        rectangle.width = rects -> width;
+        rectangle.height = rects -> height;
+
+        XUnionRectWithRegion(&rectangle, reg, reg);
+      }
+/*
+FIXME: Is this useful or just a waste of bandwidth?
+
+       Apparently useless with QT.
+*/
+      #ifndef SKIP_LOUSY_RENDER_OPERATIONS
+
+      XRenderSetPictureClipRegion(nxagentDisplay,
+                                  nxagentPicturePriv(pPicture) -> picture,
+                                  reg);
+
+      nxagentSetPictureRemoteValue(pPicture, clip_x_origin, xOrigin);
+      nxagentSetPictureRemoteValue(pPicture, clip_y_origin, yOrigin);
+      nxagentSetPictureRemoteValue(pPicture, clip_mask, 1);
+
+      #endif
+
+      #ifdef DEBUG
+
+      XSync(nxagentDisplay, 0);
+
+      #endif
+  
+      XDestroyRegion(reg);
+
+      break;
+    }
+    default:
+    {
+      #ifdef DEBUG
+      fprintf(stderr, "nxagentChangePictureClip: clipType not found\n");
+      #endif
+
+      break;
+    }
+  }
+
+  return 1;
+}
+
+void nxagentDestroyPictureClip(PicturePtr pPicture)
+{
+  #ifdef DEBUG
+  fprintf(stderr, "nxagentDestroyPictureClip: Nothing to do.\n");
+  #endif
+}
+
+void nxagentChangePicture(PicturePtr pPicture, Mask mask)
+{
+  XRenderPictureAttributes  attributes;
+  unsigned long             valuemask = 0;
+
+  #ifdef DEBUG
+  fprintf(stderr, "nxagentChangePicture: Going to change picture at [%p] with mask [%ld].\n",
+              (void *) pPicture, mask);
+  #endif
+
+  if (pPicture == NULL)
+  {
+    return;
+  }
+
+  if (mask & CPRepeat)
+  {
+    attributes.repeat = (Bool)pPicture -> repeat;
+
+    if (nxagentCheckPictureRemoteValue(pPicture, repeat, attributes.repeat) == 0)
+    {
+      valuemask |= CPRepeat;
+
+      nxagentSetPictureRemoteValue(pPicture, repeat, attributes.repeat);
+    }
+  }
+
+  if (mask & CPAlphaMap)
+  {
+    attributes.alpha_map = nxagentPicturePriv(pPicture -> alphaMap) -> picture;
+
+    if (nxagentCheckPictureRemoteValue(pPicture, alpha_map, attributes.alpha_map) == 0)
+    {
+      valuemask |= CPAlphaMap;
+
+      nxagentSetPictureRemoteValue(pPicture, alpha_map, attributes.alpha_map);
+    }
+  }
+
+  if (mask & CPAlphaXOrigin)
+  {
+    attributes.alpha_x_origin = pPicture -> alphaOrigin.x;
+
+    if (nxagentCheckPictureRemoteValue(pPicture, alpha_x_origin, attributes.alpha_x_origin) == 0)
+    {
+      valuemask |= CPAlphaXOrigin;
+
+      nxagentSetPictureRemoteValue(pPicture, alpha_x_origin, attributes.alpha_x_origin);
+    }
+  }
+
+  if (mask & CPAlphaYOrigin)
+  {
+    attributes.alpha_y_origin = pPicture -> alphaOrigin.y;
+
+    if (nxagentCheckPictureRemoteValue(pPicture, alpha_y_origin, attributes.alpha_y_origin) == 0)
+    {
+      valuemask |= CPAlphaYOrigin;
+
+      nxagentSetPictureRemoteValue(pPicture, alpha_y_origin, attributes.alpha_y_origin);
+    }
+  }
+
+  if (mask & CPClipXOrigin)
+  {
+    attributes.clip_x_origin = pPicture -> clipOrigin.x;
+
+    if (nxagentCheckPictureRemoteValue(pPicture, clip_x_origin, attributes.clip_x_origin) == 0)
+    {
+      valuemask |= CPClipXOrigin;
+
+      nxagentSetPictureRemoteValue(pPicture, clip_x_origin, attributes.clip_x_origin);
+    }
+  }
+
+  if (mask & CPClipYOrigin)
+  {
+    attributes.clip_y_origin = pPicture -> clipOrigin.y;
+
+    if (nxagentCheckPictureRemoteValue(pPicture, clip_y_origin, attributes.clip_y_origin) == 0)
+    {
+      valuemask |= CPClipYOrigin;
+
+      nxagentSetPictureRemoteValue(pPicture, clip_y_origin, attributes.clip_y_origin);
+    }
+  }
+
+  if (mask & CPGraphicsExposure)
+  {
+    attributes.graphics_exposures = (Bool)pPicture -> graphicsExposures;
+
+    if (nxagentCheckPictureRemoteValue(pPicture, graphics_exposures, attributes.graphics_exposures) == 0)
+    {
+      valuemask |= CPGraphicsExposure;
+
+      nxagentSetPictureRemoteValue(pPicture, graphics_exposures, attributes.graphics_exposures);
+    }
+  }
+
+  if (mask & CPSubwindowMode)
+  {
+    attributes.subwindow_mode = pPicture -> subWindowMode;
+
+    if (nxagentCheckPictureRemoteValue(pPicture, subwindow_mode, attributes.subwindow_mode) == 0)
+    {
+      valuemask |= CPSubwindowMode;
+
+      nxagentSetPictureRemoteValue(pPicture, subwindow_mode, attributes.subwindow_mode);
+    }
+  }
+
+  if (mask & CPClipMask)
+  {
+    attributes.clip_mask = None;
+
+    /*
+     * The nxagent doesn't know the remote id of
+     * the picture's clip mask, so the clip_mask
+     * value is used as a boolean: it is set to 0
+     * when the clip_mask is None, otherwise it is
+     * 1.
+     */
+
+    if (nxagentPicturePriv(pPicture) -> lastServerValues.clip_mask != 0)
+    {
+      valuemask |= CPClipMask;
+
+      nxagentSetPictureRemoteValue(pPicture, clip_mask, 0);
+    }
+  }
+
+  if (mask & CPPolyEdge)
+  {
+    attributes.poly_edge = pPicture -> polyEdge;
+
+    if (nxagentCheckPictureRemoteValue(pPicture, poly_edge, attributes.poly_edge) == 0)
+    {
+      valuemask |= CPPolyEdge;
+
+      nxagentSetPictureRemoteValue(pPicture, poly_edge, attributes.poly_edge);
+    } 
+  }
+
+  if (mask & CPPolyMode)
+  {
+    attributes.poly_mode = pPicture -> polyMode;
+
+    if (nxagentCheckPictureRemoteValue(pPicture, poly_mode, attributes.poly_mode) == 0)
+    {
+      valuemask |= CPPolyMode;
+
+      nxagentSetPictureRemoteValue(pPicture, poly_mode, attributes.poly_mode);
+    }
+  }
+
+  if (mask & CPDither)
+  {
+    attributes.dither = pPicture -> dither;
+
+    if (nxagentCheckPictureRemoteValue(pPicture, dither, attributes.dither) == 0)
+    {
+      valuemask |= CPDither;
+
+      nxagentSetPictureRemoteValue(pPicture, dither, attributes.dither);
+    }
+  }
+
+  if (mask & CPComponentAlpha)
+  {
+    attributes.component_alpha = pPicture -> componentAlpha;
+
+    if (nxagentCheckPictureRemoteValue(pPicture, component_alpha, attributes.component_alpha) == 0)
+    {
+      valuemask |= CPComponentAlpha;
+
+      nxagentSetPictureRemoteValue(pPicture, component_alpha, attributes.component_alpha);
+    }
+  }
+
+  #ifdef TEST
+
+  if (pPicture -> pDrawable -> type == DRAWABLE_PIXMAP)
+  {
+    fprintf(stderr, "nxagentChangePicture: %sPixmap [%p] Picture [%p][%p].\n",
+                nxagentIsShmPixmap((PixmapPtr)pPicture -> pDrawable) ? "Shared " : "",
+                    (void *) pPicture -> pDrawable, (void *) nxagentPicturePriv(pPicture) -> picture,
+                        (void *) pPicture);
+  }
+
+  #endif
+/*
+FIXME: Is this useful or just a waste of bandwidth?
+
+       Apparently useless with QT.
+
+       Without this the text is not rendered on GTK/Cairo.
+*/
+  #ifndef SKIP_REALLY_ALL_LOUSY_RENDER_OPERATIONS
+
+  if (valuemask != 0)
+  {
+    XRenderChangePicture(nxagentDisplay,
+                         nxagentPicturePriv(pPicture) -> picture,
+                         valuemask,
+                         &attributes);
+  }
+  #ifdef TEST
+  else
+  {
+    fprintf(stderr, "nxagentChangePicture: Skipping change of picture [%p] on remote X server.\n",
+                (void *) pPicture);
+  }
+  #endif
+
+  #endif
+
+  #ifdef DEBUG
+
+  XSync(nxagentDisplay, 0);
+
+  #endif
+}
+
+void nxagentValidatePicture(PicturePtr pPicture, Mask mask)
+{
+  #ifdef DEBUG
+  fprintf(stderr, "nxagentValidatePicture: Nothing to do.\n");
+  #endif
+}
+
+void nxagentComposite(CARD8 op, PicturePtr pSrc, PicturePtr pMask, PicturePtr pDst,
+                          INT16 xSrc, INT16 ySrc, INT16 xMask, INT16 yMask, INT16 xDst,
+                              INT16 yDst, CARD16 width, CARD16 height)
+{
+  RegionPtr pDstRegion;
+
+  if (pSrc == NULL || pDst == NULL)
+  {
+    return;
+  }
+
+  #ifdef DEBUG
+
+  fprintf(stderr, "nxagentComposite: Source Picture [%lu][%p] with drawable [%s%s][%p].\n",
+              nxagentPicturePriv(pSrc) -> picture, (void *) pSrc,
+              (pSrc -> pDrawable -> type == DRAWABLE_PIXMAP &&
+                   nxagentIsShmPixmap((PixmapPtr) pSrc -> pDrawable)) ? "Shared " : "",
+                       pSrc -> pDrawable -> type == DRAWABLE_PIXMAP ? "Pixmap" : "Window",
+                           (void *) pSrc -> pDrawable);
+
+  fprintf(stderr, "nxagentComposite: Destination Picture [%lu][%p] with drawable [%s%s][%p].\n",
+              nxagentPicturePriv(pDst) -> picture, (void *) pDst,
+              (pDst -> pDrawable -> type == DRAWABLE_PIXMAP &&
+                  nxagentIsShmPixmap((PixmapPtr) pDst -> pDrawable)) ? "Shared " : "",
+                       pDst -> pDrawable -> type == DRAWABLE_PIXMAP ? "Pixmap" : "Window",
+                           (void *) pDst -> pDrawable);
+
+  if (pMask)
+  {
+    fprintf(stderr, "nxagentComposite: Mask Picture [%lu][%p] with drawable [%s%s][%p].\n",
+                nxagentPicturePriv(pMask) -> picture, (void *) pMask,
+                (pMask -> pDrawable -> type == DRAWABLE_PIXMAP &&
+                    nxagentIsShmPixmap((PixmapPtr) pMask -> pDrawable)) ? "Shared " : "",
+                       pMask -> pDrawable -> type == DRAWABLE_PIXMAP ? "Pixmap" : "Window",
+                           (void *) pMask -> pDrawable);
+  }
+
+  #endif
+
+  if (NXAGENT_SHOULD_DEFER_COMPOSITE(pSrc, pMask, pDst))
+  {
+    pDstRegion = nxagentCreateRegion(pDst -> pDrawable, NULL, xDst, yDst, width, height);
+
+    #ifdef TEST
+    fprintf(stderr, "nxagentComposite: WARNING! Prevented operation on region [%d,%d,%d,%d] "
+                "for drawable at [%p] with type [%s].\n", pDstRegion -> extents.x1,
+                    pDstRegion -> extents.y1, pDstRegion -> extents.x2, pDstRegion -> extents.y2,
+                        (void *) pDst -> pDrawable,
+                            pDst -> pDrawable -> type == DRAWABLE_PIXMAP ? "pixmap" : "window");
+
+    #endif
+
+    nxagentMarkCorruptedRegion(pDst -> pDrawable, pDstRegion);
+
+    nxagentFreeRegion(pDst -> pDrawable, pDstRegion);
+
+    return;
+  }
+
+  /*
+   * Synchronize the content of the shared memory pixmap
+   * but pay attention at not doing this more than once.
+   * We need to wait until the image data has been recom-
+   * posed at the X server side or the operation will use
+   * the wrong data.
+   */
+
+  nxagentSynchronizeShmPixmap(pSrc -> pDrawable, xSrc, ySrc, width, height);
+
+  if (nxagentDrawableStatus(pSrc -> pDrawable) == NotSynchronized)
+  {
+    #ifdef TEST
+    fprintf(stderr, "nxagentComposite: Synchronizing the source drawable [%p].\n",
+                (void *) pSrc -> pDrawable);
+    #endif
+
+    nxagentSynchronizeDrawable(pSrc -> pDrawable, DO_WAIT, NEVER_BREAK, NULL);
+  }
+
+  if (pDst -> pDrawable != pSrc -> pDrawable)
+  {
+    nxagentSynchronizeShmPixmap(pDst -> pDrawable, xDst, yDst, width, height);
+
+    if (nxagentDrawableStatus(pDst -> pDrawable) == NotSynchronized)
+    {
+      #ifdef TEST
+      fprintf(stderr, "nxagentComposite: Synchronizing the destination drawable [%p].\n",
+                  (void *) pDst -> pDrawable);
+      #endif
+
+      nxagentSynchronizeDrawable(pDst -> pDrawable, DO_WAIT, NEVER_BREAK, NULL);
+    }
+  }
+
+  if (pMask != NULL && pMask -> pDrawable != pSrc -> pDrawable &&
+          pMask -> pDrawable != pDst -> pDrawable)
+  {
+    nxagentSynchronizeShmPixmap(pMask -> pDrawable, xMask, yMask, width, height);
+
+    if (nxagentDrawableStatus(pMask -> pDrawable) == NotSynchronized)
+    {
+      #ifdef TEST
+      fprintf(stderr, "nxagentComposite: Synchronizing the mask drawable [%p].\n",
+                  (void *) pMask -> pDrawable);
+      #endif
+
+      nxagentSynchronizeDrawable(pMask -> pDrawable, DO_WAIT, NEVER_BREAK, NULL);
+    }
+  }
+
+  /*
+   * The glyphs flag have to be propagated between
+   * drawables, in order to avoid to encode the
+   * text with lossy algorithms (like JPEG). Unlu-
+   * ckily we have verified that if the render com-
+   * posite propagates the flag, the deferring of
+   * render trapezoids doesn't work well. Moreover,
+   * by commenting out this code we have not noticed
+   * any visual problems.
+   *
+   *  if (nxagentDrawableContainGlyphs(pSrc -> pDrawable) == 1)
+   *  {
+   *    nxagentSetDrawableContainGlyphs(pDst -> pDrawable, 1);
+   *  }
+   */
+
+  XRenderComposite(nxagentDisplay,
+                   op,
+                   nxagentPicturePriv(pSrc) -> picture,
+                   pMask ? nxagentPicturePriv(pMask) -> picture : 0,
+                   nxagentPicturePriv(pDst) -> picture,
+                   xSrc,
+                   ySrc,
+                   xMask,
+                   yMask,
+                   xDst,
+                   yDst,
+                   width,
+                   height);
+
+  #ifdef DEBUG
+
+  XSync(nxagentDisplay, 0);
+
+  #endif
+}
+
+void nxagentGlyphs(CARD8 op, PicturePtr pSrc, PicturePtr pDst,
+                       PictFormatPtr maskFormat, INT16 xSrc, INT16 ySrc, int nlists,
+                           XGlyphElt8 *elts, int sizeID, GlyphPtr *glyphsBase)
+{
+  XRenderPictFormat *pForm;
+
+  BoxRec glyphBox;
+
+  XGlyphElt8 *elements;
+
+  #ifdef SPLIT_GLYPH_LISTS
+
+  GlyphPtr glyph;
+
+  int x;
+  int y;
+  int i;
+  int j;
+
+  #endif /* #ifdef SPLIT_GLYPH_LISTS */
+
+  if (pSrc == NULL || pDst == NULL)
+  {
+    return;
+  }
+
+  #ifdef TEST
+  fprintf(stderr, "nxagentGlyphs: Called with source [%s][%p] destination [%s][%p] and size id [%d].\n",
+              (pSrc -> pDrawable -> type == DRAWABLE_PIXMAP ? "pixmap" : "window"), (void *) pSrc, 
+                  (pDst -> pDrawable -> type == DRAWABLE_PIXMAP ? "pixmap" : "window"), (void *) pDst, 
+                      sizeID);
+  #endif
+
+  pForm = NULL;
+
+  if (maskFormat != NULL)
+  {
+    pForm = nxagentMatchingFormats(maskFormat);
+    
+    #ifdef DEBUG
+
+    nxagentPrintFormat(pForm);
+
+    #endif
+
+    if (pForm == NULL)
+    {
+      return;
+    }
+  }
+
+  if (nxagentGlyphsExtents != NullBox)
+  {
+    glyphBox.x1 = nxagentGlyphsExtents -> x1;
+    glyphBox.y1 = nxagentGlyphsExtents -> y1;
+    glyphBox.x2 = nxagentGlyphsExtents -> x2;
+    glyphBox.y2 = nxagentGlyphsExtents -> y2;
+
+    /*
+     * By extending the glyph extents the
+     * visual aspect looks nicer because
+     * the synchronized region is not glued
+     * to the fonts.
+     */
+
+    if (glyphBox.x2 != glyphBox.x1)
+    {
+      glyphBox.x1 -= GLYPH_BOX_MARGIN;
+      glyphBox.x2 += GLYPH_BOX_MARGIN;
+    }
+
+    if (glyphBox.y2 != glyphBox.y1)
+    {
+      glyphBox.y1 -= GLYPH_BOX_MARGIN;
+      glyphBox.y2 += GLYPH_BOX_MARGIN;
+    }
+  }
+
+  /*
+   * If the destination window is hidden, the
+   * operation can be prevented.
+   */
+
+  if (pDst -> pDrawable -> type == DRAWABLE_WINDOW)
+  {
+    RegionPtr pRegion;
+
+    pRegion = nxagentCreateRegion(pDst -> pDrawable, NULL, glyphBox.x1, glyphBox.y1,
+                                      glyphBox.x2 - glyphBox.x1, glyphBox.y2 - glyphBox.y1);
+    
+    if (REGION_NIL(pRegion) == 1)
+    {
+      #ifdef TEST
+      fprintf(stderr, "nxagentGlyphs: WARNING! Glyphs prevented on hidden window at [%p].\n",
+                  (void *) pDst -> pDrawable);
+      #endif
+
+      nxagentFreeRegion(pDst -> pDrawable, pRegion);
+
+      return;
+    }
+
+    nxagentFreeRegion(pDst -> pDrawable, pRegion);
+  }
+
+  /*
+   * Need to synchronize the pixmaps involved in
+   * the operation before rendering the glyphs
+   * on the real X server.
+   */
+
+  if (nxagentDrawableStatus(pSrc -> pDrawable) == NotSynchronized)
+  {
+    #ifdef TEST
+    fprintf(stderr, "nxagentGlyphs: Synchronizing source [%s] at [%p].\n",
+                pSrc -> pDrawable -> type == DRAWABLE_PIXMAP ? "pixmap" : "window",
+                    (void *) pSrc -> pDrawable);
+    #endif
+
+    /*
+     * If the source drawable is going to be
+     * repeated over the destination drawable
+     * during the composite operation, we need
+     * to synchronize the whole drawable to
+     * avoid graphical problems.
+     */
+
+    if (pSrc -> repeat == 1 || nxagentGlyphsExtents == NullBox)
+    {
+      #ifdef DEBUG
+      fprintf(stderr, "nxagentGlyphs: Synchronizing source [%s] at [%p] "
+                  "with geometry [%d,%d,%d,%d].\n", 
+                      (pSrc -> pDrawable -> type == DRAWABLE_PIXMAP ? "pixmap" : "window"),
+                          (void *) pSrc -> pDrawable, pSrc -> pDrawable -> x, pSrc -> pDrawable -> y,
+                              pSrc -> pDrawable -> x + pSrc -> pDrawable -> width,
+                                  pSrc -> pDrawable -> y + pSrc -> pDrawable -> height);
+      #endif
+
+      nxagentSynchronizeBox(pSrc -> pDrawable, NullBox, NEVER_BREAK);
+    }
+    else
+    {
+      #ifdef DEBUG
+      fprintf(stderr, "nxagentGlyphs: Synchronizing region [%d,%d,%d,%d] of source [%s] at [%p] "
+                  "with geometry [%d,%d,%d,%d].\n", glyphBox.x1, glyphBox.y1, glyphBox.x2, glyphBox.y2,
+                          (pSrc -> pDrawable -> type == DRAWABLE_PIXMAP ? "pixmap" : "window"),
+                              (void *) pSrc -> pDrawable, pSrc -> pDrawable -> x, pSrc -> pDrawable -> y,
+                                  pSrc -> pDrawable -> x + pSrc -> pDrawable -> width,
+                                      pSrc -> pDrawable -> y + pSrc -> pDrawable -> height);
+      #endif
+
+      nxagentSynchronizeBox(pSrc -> pDrawable, &glyphBox, NEVER_BREAK);
+    }
+
+    if (pSrc -> pDrawable -> type == DRAWABLE_PIXMAP)
+    {
+      nxagentIncreasePixmapUsageCounter((PixmapPtr) pSrc -> pDrawable);
+    }
+  }
+
+  if (pSrc -> pDrawable != pDst -> pDrawable &&
+          nxagentDrawableStatus(pDst -> pDrawable) == NotSynchronized)
+  {
+    #ifdef TEST
+    fprintf(stderr, "nxagentGlyphs: Synchronizing destination [%s] at [%p].\n",
+                pDst -> pDrawable -> type == DRAWABLE_PIXMAP ? "pixmap" : "window",
+                    (void *) pDst -> pDrawable);
+    #endif
+
+    if (nxagentGlyphsExtents == NullBox)
+    {
+      #ifdef DEBUG
+      fprintf(stderr, "nxagentGlyphs: Synchronizing destination [%s] at [%p] "
+                  "with geometry [%d,%d,%d,%d].\n", 
+                      (pDst -> pDrawable -> type == DRAWABLE_PIXMAP ? "pixmap" : "window"),
+                          (void *) pDst -> pDrawable, pDst -> pDrawable -> x, pDst -> pDrawable -> y,
+                              pDst -> pDrawable -> x + pDst -> pDrawable -> width,
+                                  pDst -> pDrawable -> y + pDst -> pDrawable -> height);
+      #endif
+
+      nxagentSynchronizeBox(pDst -> pDrawable, NullBox, NEVER_BREAK);
+    }
+    else
+    {
+      #ifdef DEBUG
+      fprintf(stderr, "nxagentGlyphs: Synchronizing region [%d,%d,%d,%d] of destination [%s] at [%p] "
+                  "with geometry [%d,%d,%d,%d].\n", glyphBox.x1, glyphBox.y1, glyphBox.x2, glyphBox.y2,
+                          (pDst -> pDrawable -> type == DRAWABLE_PIXMAP ? "pixmap" : "window"),
+                              (void *) pDst -> pDrawable, pDst -> pDrawable -> x, pDst -> pDrawable -> y,
+                                  pDst -> pDrawable -> x + pDst -> pDrawable -> width,
+                                      pDst -> pDrawable -> y + pDst -> pDrawable -> height);
+      #endif
+
+      nxagentSynchronizeBox(pDst -> pDrawable, &glyphBox, NEVER_BREAK);
+    }
+
+    if (pDst -> pDrawable -> type == DRAWABLE_PIXMAP)
+    {
+      nxagentIncreasePixmapUsageCounter((PixmapPtr) pDst -> pDrawable);
+    }
+  }
+
+  nxagentSetDrawableContainGlyphs(pDst -> pDrawable, 1);
+
+  #ifdef TEST
+  fprintf(stderr, "nxagentGlyphs: Glyph flag set on drawable [%s][%p].\n",
+              pDst -> pDrawable -> type == DRAWABLE_PIXMAP ? "pixmap" : "window",
+                  (void *) pDst -> pDrawable);
+  #endif
+
+  #ifdef SPLIT_GLYPH_LISTS
+
+  /*
+   * We split glyphs lists here and recalculate
+   * the offsets of each list to make them ab-
+   * solute and not relatives to the prior list.
+   * This way each time we call XRenderComposi-
+   * teText it has to deal only with a list of
+   * glyphs. This is done to further improve
+   * caching.
+   */
+
+  elements = elts;
+
+  if (nlists > 1)
+  {
+    for (j = 1; j < nlists; j++)
+    {
+      x = elements -> xOff;
+      y = elements -> yOff;
+
+      #ifdef TEST
+      fprintf(stderr, "nxagentGlyphs: Element [%d] of [%d] has offset [%d,%d].\n",
+                  j, nlists, elements -> xOff, elements -> yOff);
+      #endif
+
+      for (i = 0; i < elements -> nchars; i++)
+      {
+        glyph = *glyphsBase++;
+
+        x += glyph -> info.xOff;
+        y += glyph -> info.yOff;
+        
+        #ifdef TEST
+        fprintf(stderr, "nxagentGlyphs: Glyph at index [%d] has offset [%d,%d] and "
+                    "position [%d,%d].\n", i, elements -> nchars, glyph -> info.xOff,
+                        glyph -> info.yOff, x, y);
+        #endif
+      }
+
+      elements++;
+
+      elements -> xOff += x;
+      elements -> yOff += y;
+
+      #ifdef TEST
+      fprintf(stderr, "nxagentGlyphs: New offset for list at [%p] is [%d,%d].\n",
+                  elements, elements -> xOff, elements -> yOff);
+      #endif
+    }
+
+    elements = elts;
+  }
+
+  switch (sizeID)
+  {
+    case 1:
+    {
+      for (j = 0; j < nlists; j++)
+      {
+        XRenderCompositeText8(nxagentDisplay,
+                              op,
+                              nxagentPicturePriv(pSrc)->picture,
+                              nxagentPicturePriv(pDst)->picture,
+                              pForm,
+                              xSrc,
+                              ySrc,
+                              elements -> xOff,
+                              elements -> yOff,
+                              (XGlyphElt8*) elements,
+                              1);
+
+        elements++;
+      }
+
+      break;
+    }
+    case 2:
+    {
+      for (j = 0; j < nlists; j++)
+      {
+        XRenderCompositeText16(nxagentDisplay,
+                               op,
+                               nxagentPicturePriv(pSrc) -> picture,
+                               nxagentPicturePriv(pDst) -> picture,
+                               pForm,
+                               xSrc,
+                               ySrc,
+                               elements -> xOff,
+                               elements -> yOff,
+                               (XGlyphElt16*) elements,
+                               1);
+
+        elements++;
+      }
+
+      break;
+    }
+    case 4:
+    {
+      for (j = 0; j < nlists; j++)
+      {
+        XRenderCompositeText32(nxagentDisplay,
+                               op,
+                               nxagentPicturePriv(pSrc) -> picture,
+                               nxagentPicturePriv(pDst) -> picture,
+                               pForm,
+                               xSrc,
+                               ySrc,
+                               elements -> xOff,
+                               elements -> yOff,
+                               (XGlyphElt32*) elements,
+                               1);
+
+        elements++;
+      }
+
+      break;
+    }
+    default:
+    {
+      #ifdef WARNING
+      fprintf(stderr, "nxagentGlyphs: WARNING! Invalid size id [%d].\n",
+                  sizeID);
+      #endif
+
+      break;
+    }
+  }
+
+  #else /* #ifdef SPLIT_GLYPH_LISTS */
+
+  elements = elts;
+
+  switch (sizeID)
+  {
+    case 1:
+    {
+      XRenderCompositeText8(nxagentDisplay,
+                            op,
+                            nxagentPicturePriv(pSrc)->picture,
+                            nxagentPicturePriv(pDst)->picture,
+                            pForm,
+                            xSrc,
+                            ySrc,
+                            elements -> xOff,
+                            elements -> yOff,
+                            (XGlyphElt8*) elements,
+                            nlists);
+
+      break;
+    }
+    case 2:
+    {
+      XRenderCompositeText16(nxagentDisplay,
+                             op,
+                             nxagentPicturePriv(pSrc) -> picture,
+                             nxagentPicturePriv(pDst) -> picture,
+                             pForm,
+                             xSrc,
+                             ySrc,
+                             elements -> xOff,
+                             elements -> yOff,
+                             (XGlyphElt16*) elements,
+                             nlists);
+
+      break;
+    }
+    case 4:
+    {
+      XRenderCompositeText32(nxagentDisplay,
+                             op,
+                             nxagentPicturePriv(pSrc) -> picture,
+                             nxagentPicturePriv(pDst) -> picture,
+                             pForm,
+                             xSrc,
+                             ySrc,
+                             elements -> xOff,
+                             elements -> yOff,
+                             (XGlyphElt32*) elements,
+                             nlists);
+
+      break;
+    }
+    default:
+    {
+      #ifdef WARNING
+      fprintf(stderr, "nxagentGlyphs: WARNING! Invalid size id [%d].\n",
+                  sizeID);
+      #endif
+
+      break;
+    }
+  }
+
+  #endif /* #ifdef SPLIT_GLYPH_LISTS */
+}
+
+void nxagentCompositeRects(CARD8 op, PicturePtr pDst, xRenderColor *color,
+                               int nRect, xRectangle *rects)
+{
+  RegionPtr rectRegion;
+
+  if (pDst == NULL)
+  {
+    return;
+  }
+
+  #ifdef TEST
+  fprintf(stderr, "nxagentCompositeRects: Called for picture at [%p] with [%s] at [%p].\n",
+              (void *) pDst, (pDst -> pDrawable -> type == DRAWABLE_PIXMAP ? "pixmap" : "window"),
+                  (void *) pDst -> pDrawable);
+  #endif
+
+  /*
+   * The CompositeRects() clears the destination's
+   * corrupted region like the PolyFillRects() does.
+   * As this case is harder to handle, at the moment
+   * we only check for two ops.
+   */
+
+  if (nxagentDrawableStatus(pDst -> pDrawable) == NotSynchronized &&
+          (op == PictOpSrc ||
+               (op == PictOpOver && color -> alpha == 0xffff)))
+  {
+    rectRegion = RECTS_TO_REGION(pDst -> pDrawable -> pScreen, nRect, rects, CT_REGION);
+
+    if (pDst -> clientClipType != CT_NONE)
+    {
+      RegionRec tmpRegion;
+
+      REGION_INIT(pDst -> pDrawable -> pScreen, &tmpRegion, NullBox, 1);
+
+      REGION_COPY(pDst -> pDrawable -> pScreen, &tmpRegion, (RegionPtr) pDst -> clientClip);
+
+      if (pDst -> clipOrigin.x != 0 || pDst -> clipOrigin.y != 0)
+      {
+        REGION_TRANSLATE(pDst -> pDrawable -> pScreen, &tmpRegion, pDst -> clipOrigin.x, pDst -> clipOrigin.y);
+      }
+
+      REGION_INTERSECT(pDst -> pDrawable -> pScreen, rectRegion, rectRegion, &tmpRegion);
+
+      REGION_UNINIT(pDst -> pDrawable -> pScreen, &tmpRegion);      
+    }
+
+    #ifdef TEST
+    fprintf(stderr, "nxagentCompositeRects: Going to clean the drawable with extents [%d,%d,%d,%d].\n",
+                rectRegion -> extents.x1, rectRegion -> extents.y1, rectRegion -> extents.x2, rectRegion -> extents.y2);
+    #endif
+
+    nxagentUnmarkCorruptedRegion(pDst -> pDrawable, rectRegion);
+
+    REGION_DESTROY(pDrawable -> pScreen, rectRegion);
+  }
+
+  XRenderFillRectangles(nxagentDisplay,
+                        op,
+                        (Picture)nxagentPicturePriv(pDst) -> picture,
+                        (XRenderColor *) color,
+                        (XRectangle *) rects,
+                        nRect);
+
+  #ifdef DEBUG
+
+  XSync(nxagentDisplay, 0);
+
+  #endif
+}
+
+void nxagentTrapezoids(CARD8 op, PicturePtr pSrc, PicturePtr pDst,
+                           PictFormatPtr maskFormat, INT16 xSrc, INT16 ySrc,
+                               int ntrap, xTrapezoid *traps)
+{
+  XRenderPictFormat *pForm;
+
+  XTrapezoid *current = (XTrapezoid *) traps;
+
+  RegionPtr pDstRegion;
+
+  int remaining = ntrap;
+
+  #ifdef TEST
+  fprintf(stderr, "nxagentTrapezoids: Source [%p] destination [%p] coordinates "
+              "[%d,%d] elements [%d].\n", (void *) pSrc, (void *) pDst,
+                  xSrc, ySrc, ntrap);
+  #endif
+
+  if (pSrc == NULL || pDst == NULL)
+  {
+    return;
+  }
+
+  pForm = NULL;
+
+  if (maskFormat != NULL)
+  {
+    pForm = nxagentMatchingFormats(maskFormat);
+    
+    #ifdef DEBUG
+
+    nxagentPrintFormat(pForm);
+
+    #endif
+
+    if (pForm == NULL)
+    {
+      return;
+    }
+  }
+/*
+FIXME: Is this useful or just a waste of bandwidth?
+
+       Apparently useless with QT.
+*/
+  #ifndef SKIP_LOUSY_RENDER_OPERATIONS
+
+  #ifdef TEST
+
+  fprintf(stderr, "nxagentTrapezoids: Source is a [%s] of geometry [%d,%d].\n",
+              (pSrc -> pDrawable -> type == DRAWABLE_PIXMAP ? "pixmap" : "window"),
+                  pSrc -> pDrawable -> width, pSrc -> pDrawable -> height);
+
+  if (pSrc ->pDrawable != pDst -> pDrawable)
+  {
+    fprintf(stderr, "nxagentTrapezoids: Destination is a [%s] of geometry [%d,%d].\n",
+                (pDst -> pDrawable -> type == DRAWABLE_PIXMAP ? "pixmap" : "window"),
+                    pDst -> pDrawable -> width, pDst -> pDrawable -> height);
+  }
+
+  #endif
+
+  /*
+   * If the destination drawable is not synchronized
+   * but the trapezoids extents are included in the
+   * dirty region, we can defer the operation.
+   */
+
+  if (nxagentDrawableStatus(pDst -> pDrawable) == NotSynchronized &&
+          RECT_IN_REGION(pDst -> pDrawable -> pScreen, nxagentCorruptedRegion(pDst -> pDrawable),
+                             nxagentTrapezoidExtents) == rgnIN)
+  {
+    #ifdef TEST
+    fprintf(stderr, "nxagentTrapezoids: WARNING! Prevented operation on region [%d,%d,%d,%d] already dirty "
+                "for drawable [%s][%p].\n", nxagentTrapezoidExtents -> x1, nxagentTrapezoidExtents -> y1,
+                    nxagentTrapezoidExtents -> x2, nxagentTrapezoidExtents -> y2,
+                        pDst -> pDrawable -> type == DRAWABLE_PIXMAP ? "pixmap" : "window",
+                            (void *) pDst -> pDrawable);
+    #endif
+
+    if (pDst -> pDrawable -> type == DRAWABLE_PIXMAP)
+    {
+      nxagentPixmapContainTrapezoids((PixmapPtr) pDst -> pDrawable) = 1;
+    }
+
+    return;
+  }
+
+  /*
+   * If the destination doesn't contain any glyphs,
+   * we can defer the trapezoids drawing by marking
+   * the destination as dirty.
+   */
+
+  if (NXAGENT_SHOULD_DEFER_TRAPEZOIDS(pDst -> pDrawable))
+  {
+    pDstRegion = nxagentCreateRegion(pDst -> pDrawable, NULL,
+                                     nxagentTrapezoidExtents -> x1,
+                                     nxagentTrapezoidExtents -> y1,
+                                     nxagentTrapezoidExtents -> x2 - nxagentTrapezoidExtents -> x1,
+                                     nxagentTrapezoidExtents -> y2 - nxagentTrapezoidExtents -> y1);
+
+    #ifdef TEST
+    fprintf(stderr, "nxagentTrapezoids: WARNING! Prevented operation on region [%d,%d,%d,%d] "
+                "for drawable [%s][%p].\n", pDstRegion -> extents.x1, pDstRegion -> extents.y1,
+                    pDstRegion -> extents.x2, pDstRegion -> extents.y2,
+                        pDst -> pDrawable -> type == DRAWABLE_PIXMAP ? "pixmap" : "window",
+                            (void *) pDst -> pDrawable);
+    #endif
+
+    nxagentMarkCorruptedRegion(pDst -> pDrawable, pDstRegion);
+
+    nxagentFreeRegion(pDst -> pDrawable, pDstRegion);
+
+    if (pDst -> pDrawable -> type == DRAWABLE_PIXMAP)
+    {
+      nxagentPixmapContainTrapezoids((PixmapPtr) pDst -> pDrawable) = 1;
+    }
+
+    return;
+  }
+
+  if (nxagentDrawableStatus(pSrc -> pDrawable) == NotSynchronized)
+  {
+    #ifdef TEST
+    fprintf(stderr, "nxagentTrapezoids: Going to synchronize the source drawable at [%p].\n",
+                (void *) pSrc -> pDrawable);
+    #endif
+
+    nxagentSynchronizeBox(pSrc -> pDrawable, NullBox, NEVER_BREAK);
+  }
+
+  if (nxagentDrawableStatus(pDst -> pDrawable) == NotSynchronized)
+  {
+    #ifdef TEST
+    fprintf(stderr, "nxagentTrapezoids: Going to synchronize the destination drawable at [%p].\n",
+                (void *) pDst -> pDrawable);
+    #endif
+
+    nxagentSynchronizeBox(pDst -> pDrawable, nxagentTrapezoidExtents, NEVER_BREAK);
+  }
+
+  while (remaining > 0)
+  {
+    XRenderCompositeTrapezoids(nxagentDisplay,
+                               op,
+                               nxagentPicturePriv(pSrc) -> picture,
+                               nxagentPicturePriv(pDst) -> picture,
+                               pForm,
+                               xSrc,
+                               ySrc,
+                               (XTrapezoid *) current,
+                               (remaining > TRAPEZOIDS_PER_REQUEST ?
+                                   TRAPEZOIDS_PER_REQUEST : remaining));
+
+    remaining -= TRAPEZOIDS_PER_REQUEST;
+    current   += TRAPEZOIDS_PER_REQUEST;
+  }
+
+  #endif
+
+  #ifdef DEBUG
+
+  XSync(nxagentDisplay, 0);
+
+  #endif
+}
+
+void nxagentRasterizeTrapezoid(PicturePtr pMask, xTrapezoid *trap,
+                                   int x_off, int y_off)
+{
+  #ifdef DEBUG
+  fprintf(stderr, "nxagentRasterizeTrapezoids: Nothing to do.\n");
+  #endif
+}
+
+void nxagentTriangles(CARD8 op, PicturePtr pSrc, PicturePtr pDst,
+                          PictFormatPtr maskFormat, INT16 xSrc, INT16 ySrc,
+                              int ntri, xTriangle *tris)
+{
+  XRenderPictFormat *pForm;
+
+  #ifdef DEBUG
+  fprintf(stderr, "nxagentTriangles: Source [%p] Destination [%p] Coordinates [%d,%d] Elements [%d].\n",
+              (void *) pSrc, (void *) pDst, xSrc, ySrc, ntri);
+  #endif
+
+  if (pSrc == NULL || pDst == NULL)
+  {
+    return;
+  }
+
+  pForm = NULL;
+
+  if (maskFormat != NULL)
+  {
+    pForm = nxagentMatchingFormats(maskFormat);
+
+    #ifdef DEBUG
+
+    nxagentPrintFormat(pForm);
+
+    #endif
+
+    if (pForm == NULL)
+    {
+      return;
+    }
+  }
+
+  /*
+   * If the X_RenderCompositeTriangles requests
+   * increment the traffic, we can defer the
+   * operation like nxagentTrapezoids() does.
+   */
+
+  if (nxagentDrawableStatus(pSrc -> pDrawable) == NotSynchronized)
+  {
+    #ifdef TEST
+    fprintf(stderr, "nxagentTriangles: Going to synchronize the source drawable at [%p].\n",
+                (void *) pSrc -> pDrawable);
+    #endif
+
+    nxagentSynchronizeDrawable(pSrc -> pDrawable, DO_WAIT, NEVER_BREAK, NULL);
+  }
+
+  if (nxagentDrawableStatus(pDst -> pDrawable) == NotSynchronized)
+  {
+    #ifdef TEST
+    fprintf(stderr, "nxagentTriangles: Going to synchronize the destination drawable at [%p].\n",
+                (void *) pDst -> pDrawable);
+    #endif
+
+    nxagentSynchronizeDrawable(pDst -> pDrawable, DO_WAIT, NEVER_BREAK, NULL);
+  }
+
+  XRenderCompositeTriangles(nxagentDisplay,
+                            op,
+                            nxagentPicturePriv(pSrc) -> picture,
+                            nxagentPicturePriv(pDst) -> picture,
+                            pForm,
+                            xSrc,
+                            ySrc,
+                            (XTriangle*)tris,
+                            ntri);
+
+  #ifdef DEBUG
+
+  XSync(nxagentDisplay, 0);
+
+  #endif
+}
+
+void nxagentTriStrip(CARD8 op, PicturePtr pSrc, PicturePtr pDst,
+                         PictFormatPtr  maskFormat, INT16 xSrc, INT16 ySrc,
+                             int npoint, xPointFixed *points)
+{
+  XRenderPictFormat *pForm;
+
+  #ifdef DEBUG
+  fprintf(stderr, "nxagentTriStrip: Source [%p] Destination [%p] Coordinates [%d,%d] Elements [%d].\n",
+              (void *) pSrc, (void *) pDst, xSrc, ySrc, npoint);
+  #endif
+
+  if (pSrc == NULL || pDst == NULL)
+  {
+    return;
+  }
+
+  pForm = NULL;
+
+  if (maskFormat != NULL)
+  {
+    pForm = nxagentMatchingFormats(maskFormat);
+
+    #ifdef DEBUG
+
+    nxagentPrintFormat(pForm);
+
+    #endif
+
+    if (pForm == NULL)
+    {
+      return;
+    }
+  }
+
+  /*
+   * If the X_RenderCompositeTriStrip requests
+   * increment the traffic, we can defer the
+   * operation like nxagentTrapezoids() does.
+   */
+
+  if (nxagentDrawableStatus(pSrc -> pDrawable) == NotSynchronized)
+  {
+    #ifdef TEST
+    fprintf(stderr, "nxagentTriStrip: Going to synchronize the source drawable at [%p].\n",
+                (void *) pSrc -> pDrawable);
+    #endif
+
+    nxagentSynchronizeDrawable(pSrc -> pDrawable, DO_WAIT, NEVER_BREAK, NULL);
+  }
+
+  if (nxagentDrawableStatus(pDst -> pDrawable) == NotSynchronized)
+  {
+    #ifdef TEST
+    fprintf(stderr, "nxagentTriStrip: Going to synchronize the destination drawable at [%p].\n",
+                (void *) pDst -> pDrawable);
+    #endif
+
+    nxagentSynchronizeDrawable(pDst -> pDrawable, DO_WAIT, NEVER_BREAK, NULL);
+  }
+
+  XRenderCompositeTriStrip(nxagentDisplay,
+                           op,
+                           nxagentPicturePriv(pSrc) -> picture,
+                           nxagentPicturePriv(pDst) -> picture,
+                           pForm,
+                           xSrc,
+                           ySrc,
+                           (XPointFixed*)points,
+                           npoint);
+
+  #ifdef DEBUG
+
+  XSync(nxagentDisplay, 0);
+
+  #endif
+}
+
+void nxagentTriFan(CARD8 op, PicturePtr pSrc, PicturePtr pDst,
+                       PictFormatPtr maskFormat, INT16 xSrc, INT16 ySrc,
+                           int npoint, xPointFixed *points)
+{
+  XRenderPictFormat *pForm;
+
+  #ifdef DEBUG
+  fprintf(stderr, "nxagentTriFan: Source [%p] Destination [%p] Coordinates [%d,%d] Elements [%d].\n",
+              (void *) pSrc, (void *) pDst, xSrc, ySrc, npoint);
+  #endif
+
+  if (pSrc == NULL || pDst == NULL)
+  {
+    return;
+  }
+
+  pForm = NULL;
+
+  if (maskFormat != NULL)
+  {
+    pForm = nxagentMatchingFormats(maskFormat);
+
+    #ifdef DEBUG
+
+    nxagentPrintFormat(pForm);
+
+    #endif
+
+    if (pForm == NULL)
+    {
+      return;
+    }
+  }
+
+  /*
+   * If the X_RenderCompositeTriFan requests
+   * increment the traffic, we can defer the
+   * operation like nxagentTrapezoids() does.
+   */
+
+  if (nxagentDrawableStatus(pSrc -> pDrawable) == NotSynchronized)
+  {
+    #ifdef TEST
+    fprintf(stderr, "nxagentTriFan: Going to synchronize the source drawable at [%p].\n",
+                (void *) pSrc -> pDrawable);
+    #endif
+
+    nxagentSynchronizeDrawable(pSrc -> pDrawable, DO_WAIT, NEVER_BREAK, NULL);
+  }
+
+  if (nxagentDrawableStatus(pDst -> pDrawable) == NotSynchronized)
+  {
+    #ifdef TEST
+    fprintf(stderr, "nxagentTriFan: Going to synchronize the destination drawable at [%p].\n",
+                (void *) pDst -> pDrawable);
+    #endif
+
+    nxagentSynchronizeDrawable(pDst -> pDrawable, DO_WAIT, NEVER_BREAK, NULL);
+  }
+
+  XRenderCompositeTriFan(nxagentDisplay,
+                         op,
+                         nxagentPicturePriv(pSrc) -> picture,
+                         nxagentPicturePriv(pDst) -> picture,
+                         pForm,
+                         xSrc,
+                         ySrc,
+                         (XPointFixed*)points,
+                         npoint);
+
+  #ifdef DEBUG
+
+  XSync(nxagentDisplay, 0);
+
+  #endif
+}
+
+#ifndef NXAGENT_UPGRADE
+
+/*
+FIXME: In the 3.0.0 port these functions have been moved
+       to Picture.c. We can remove them when the port is
+       is complete.
+*/
+int AllocatePicturePrivateIndex()
+{
+  return picturePrivateCount++;
+}
+
+Bool AllocatePicturePrivate(register ScreenPtr pScreen, int index2, unsigned amount)
+{
+  unsigned oldamount;
+
+  PictureScreenPtr ps = GetPictureScreen(pScreen);
+
+  /*
+   * Round up the size for proper alignment.
+   */
+
+  amount = ((amount + (sizeof(long) - 1)) / sizeof(long)) * sizeof(long);
+
+  if (index2 >= ps -> PicturePrivateLen)
+  {
+    unsigned *nsizes = (unsigned *) xrealloc(ps -> PicturePrivateSizes,
+                           (index2 + 1) * sizeof(unsigned));
+    if (nsizes == 0)
+    {
+      return 0;
+    }
+
+    while (ps -> PicturePrivateLen <= index2)
+    {
+      nsizes[ps -> PicturePrivateLen++] = 0;
+
+      ps -> totalPictureSize += sizeof(DevUnion);
+    }
+
+    ps -> PicturePrivateSizes = nsizes;
+  }
+
+  oldamount = ps -> PicturePrivateSizes[index2];
+
+  if (amount > oldamount)
+  {
+    ps -> PicturePrivateSizes[index2] = amount;
+
+    ps -> totalPictureSize += (amount - oldamount);
+  }
+
+  return 1;
+}
+#endif
+
+void nxagentQueryFormats()
+{
+  XRenderInfo *xri;
+  XExtDisplayInfo *info = NULL;
+  XRenderPictFormat *pformat=NULL;
+
+  int i;
+
+  #ifdef DEBUG
+  fprintf(stderr, "nxagentQueryFormats.\n");
+  #endif
+
+  if (XRenderQueryFormats(nxagentDisplay))
+  {
+    #ifdef DEBUG
+
+    XSync(nxagentDisplay, 0);
+
+    #endif
+
+    info = (XExtDisplayInfo *) XRenderFindDisplay(nxagentDisplay);
+
+    #ifdef DEBUG
+
+    XSync(nxagentDisplay, 0);
+
+    #endif
+
+    xri = (XRenderInfo *) info -> data;
+
+    pformat = xri -> format;
+
+    for (i = 0; i < xri -> nformat; i++)
+    {
+      nxagentArrayFormats[i] = *pformat;
+
+      #ifdef DEBUG
+      fprintf(stderr, "nxagentQueryFormats: Added format type [%d] depth [%d] rgb [%d,%d,%d] "
+                  "mask rgb [%d,%d,%d] alpha [%d] alpha mask [%d].\n",
+                      nxagentArrayFormats[i].type, nxagentArrayFormats[i].depth, nxagentArrayFormats[i].direct.red,
+                          nxagentArrayFormats[i].direct.green, nxagentArrayFormats[i].direct.blue,
+                              nxagentArrayFormats[i].direct.redMask, nxagentArrayFormats[i].direct.greenMask,
+                                  nxagentArrayFormats[i].direct.blueMask, nxagentArrayFormats[i].direct.alpha,
+                                      nxagentArrayFormats[i].direct.alphaMask);
+      #endif
+
+      pformat++;
+    }
+
+    #ifdef DEBUG
+
+    if (nxagentNumFormats == 0)
+    {
+      fprintf(stderr, "nxagentQueryFormats: Number of formats is [%d].\n",
+                  i);
+    }
+    else
+    {
+      fprintf(stderr, "nxagentQueryFormats: Old number of formats is [%d]. New number of formats is [%d].\n",
+                  nxagentNumFormats, i);
+    }
+
+    #endif
+
+    nxagentNumFormats = i;
+  }
+}
+
+void nxagentCreateGlyphSet(GlyphSetPtr pGly)
+{
+  XRenderPictFormat *pForm;
+
+  #ifdef DEBUG
+  fprintf(stderr, "nxagentCreateGlyphSet: Glyphset at [%p].\n", (void *) pGly);
+  #endif
+
+  pForm = NULL;
+
+  if (pGly -> format != NULL)
+  {
+    pForm = nxagentMatchingFormats(pGly -> format);
+
+    #ifdef DEBUG
+
+    nxagentPrintFormat(pForm);
+
+    #endif
+
+    if (pForm == NULL)
+    {
+      return;
+    }
+  }
+
+  pGly -> remoteID = XRenderCreateGlyphSet(nxagentDisplay, pForm);
+
+  #ifdef DEBUG
+
+  XSync(nxagentDisplay, 0);
+
+  #endif
+}
+
+void nxagentReferenceGlyphSet(GlyphSetPtr glyphSet)
+{
+  if (glyphSet -> remoteID == 0)
+  {
+    #ifdef TEST
+    fprintf(stderr, "nxagentReferenceGlyphSet: Operation deferred because glyphset at [%p] is corrupted.\n",
+                (void *) glyphSet);
+    #endif
+
+    return;
+  }
+
+  XRenderReferenceGlyphSet (nxagentDisplay, glyphSet -> remoteID);
+}
+
+void nxagentFreeGlyphSet(GlyphSetPtr glyphSet)
+{
+  if (glyphSet -> remoteID == 0)
+  {
+    #ifdef TEST
+    fprintf(stderr, "nxagentFreeGlyphs: Operation ignored because glyphset at [%p] is corrupted.\n",
+                (void *) glyphSet);
+    #endif
+
+    return;
+  }
+
+  XRenderFreeGlyphSet(nxagentDisplay, glyphSet -> remoteID);
+}
+
+void nxagentAddGlyphs(GlyphSetPtr glyphSet, Glyph *gids, xGlyphInfo *gi,
+                          int nglyphs, CARD8 *images, int sizeImages)
+{
+  GlyphRefPtr gr;
+  Glyph *tempGids;
+
+  int i;
+
+  CARD8 *normalizedImages;
+
+  #ifdef DEBUG
+  fprintf(stderr, "nxagentAddGlyphs: Glyphset at [%p]. Number of glyphs [%d].\n",
+              (void *) glyphSet, nglyphs);
+  #endif
+
+  if (glyphSet -> remoteID == 0)
+  {
+    #ifdef TEST
+    fprintf(stderr, "nxagentAddGlyphs: Going to reconnect the glyhpset at [%p] before adding glyphs.\n",
+                (void *) glyphSet);
+    #endif
+
+    nxagentReconnectGlyphSet(glyphSet, (XID) 0, (void*) NULL);
+  }
+
+  /*
+   * By adding a glyph to a glyphset on
+   * remote X server we mark its reference
+   * as synchronized.
+   */
+
+  tempGids = gids;
+
+  for (i = 0; i < nglyphs; i++)
+  {
+    if ((gr = FindGlyphRef(&glyphSet -> hash, *tempGids, 0, 0)) &&
+            gr -> glyph != DeletedGlyph)
+    {
+      #ifdef DEBUG
+      fprintf(stderr, "nxagentAddGlyphs: Added Glyph [%p][%ld] to glyphset [%p].\n",
+                  (void *) gr -> glyph, *tempGids, (void *) glyphSet);
+      #endif
+
+      gr -> corruptedGlyph = 0;
+    }
+
+    tempGids++;
+  }
+
+  normalizedImages = NULL;
+
+  if (glyphDepths[glyphSet -> fdepth] == 1 &&
+          nxagentServerOrder() != BitmapBitOrder(nxagentDisplay))
+  {
+    normalizedImages = xalloc(sizeImages);
+
+    if (normalizedImages != NULL)
+    {
+      memcpy(normalizedImages, images, sizeImages);
+
+      BitOrderInvert ((unsigned char *) normalizedImages, sizeImages);
+    }
+    else
+    {
+      #ifdef PANIC
+      fprintf(stderr, "nxagentAddGlyphs: PANIC! Allocation of normalized glyph images failed.\n");
+      #endif
+    }
+  }
+
+  if (normalizedImages == NULL)
+  {
+    normalizedImages = images;
+  }
+
+  XRenderCleanGlyphs(gi, nglyphs, normalizedImages, glyphDepths[glyphSet -> fdepth], nxagentDisplay);
+
+  XRenderAddGlyphs(nxagentDisplay,
+                   glyphSet -> remoteID,
+                   gids,
+                   (XGlyphInfo*)(gi),
+                   nglyphs,
+                   (char*) normalizedImages,
+                   sizeImages);
+
+  if (normalizedImages != images)
+  {
+    xfree(normalizedImages);
+  }
+
+  #ifdef DEBUG
+
+  XSync(nxagentDisplay, 0);
+
+  #endif
+}
+
+void nxagentFreeGlyphs(GlyphSetPtr glyphSet, CARD32 *gids, int nglyph)
+{
+  GlyphRefPtr gr;
+  CARD32 *tempGids;
+  Glyph  gid;
+
+  int i;
+
+  if (glyphSet -> remoteID == 0)
+  {
+    #ifdef TEST
+    fprintf(stderr, "nxagentFreeGlyphs: Operation ignored because glyphset at [%p] is corrupted.\n",
+                (void *) glyphSet);
+    #endif
+
+    return;
+  }
+
+  /*
+   * We loop across the list of glyphs id
+   * to establish if they have been added
+   * to glyphset on remote X server, so
+   * they can be freed.
+   */
+
+  tempGids = gids;
+
+  for (i = 0; i < nglyph; i++)
+  {
+    gid = (Glyph)*tempGids;
+
+    if ((gr = FindGlyphRef(&glyphSet -> hash, *tempGids, 0, 0)) &&
+            gr -> glyph != DeletedGlyph &&
+                gr -> corruptedGlyph == 0)
+    {
+      XRenderFreeGlyphs(nxagentDisplay, glyphSet -> remoteID, &gid, 1);
+    }
+
+    tempGids++;
+  }
+}
+
+void nxagentSetPictureTransform(PicturePtr pPicture, pointer transform)
+{
+  #ifdef TEST
+  fprintf(stderr, "nxagentSetPictureTransform: Going to set transform [%p] to picture at [%p].\n",
+              (void *) transform, (void *) pPicture);
+  #endif
+
+/*
+FIXME: Is this useful or just a waste of bandwidth?
+
+       Apparently useless with QT.
+*/
+  #ifndef SKIP_LOUSY_RENDER_OPERATIONS
+
+  XRenderSetPictureTransform(nxagentDisplay,
+                                 nxagentPicturePriv(pPicture) -> picture,
+                                     (XTransform *) transform);
+  #endif
+}
+
+void nxagentSetPictureFilter(PicturePtr pPicture, char *filter, int name_size,
+                                 pointer params, int nparams)
+{
+  char *szFilter = Xmalloc(name_size + 1);
+
+  if (szFilter == NULL)
+  {
+    #ifdef WARNING
+    fprintf(stderr, "nxagentSetPictureFilter: error allocating memory for filter name.\n");
+    #endif
+
+    return;
+  }
+
+  strncpy(szFilter, filter, name_size);
+
+  szFilter[name_size] = 0;
+
+  #ifdef TEST
+  fprintf(stderr, "nxagentSetPictureFilter: Going to set filter [%s] to picture at [%p].\n",
+              szFilter, (void *) pPicture);
+  #endif
+/*
+FIXME: Is this useful or just a waste of bandwidth?
+
+       Apparently useless with QT.
+*/
+  #ifndef SKIP_LOUSY_RENDER_OPERATIONS
+
+  XRenderSetPictureFilter(nxagentDisplay,
+                          nxagentPicturePriv(pPicture) -> picture,
+                          szFilter,
+                          (XFixed *) params,
+                          nparams);
+  #endif
+
+  Xfree(szFilter);
+}
+
+
+Bool nxagentPictureInit(ScreenPtr pScreen, PictFormatPtr formats, int nformats)
+{
+  #ifdef RENDER
+
+  #ifdef DEBUG
+  fprintf(stderr, "nxagentPictureInit: Screen [%p].\n", (void *) pScreen);
+  #endif
+
+  nxagentQueryFormats();
+
+  if (fbPictureInit(pScreen, formats, nformats) == 0)
+  {
+    return FALSE;
+  }
+
+  nxagentPicturePrivateIndex = AllocatePicturePrivateIndex();
+
+  AllocatePicturePrivate(pScreen, nxagentPicturePrivateIndex, sizeof(nxagentPrivPictureRec));
+
+  #endif
+
+  return TRUE;
+}
+
+#ifdef DEBUG
+
+static void nxagentPrintFormat(XRenderPictFormat *pFormat)
+{
+  if (pFormat == NULL)
+  {
+    fprintf(stderr, "nxagentPrintFormat: WARNING! null pointer passed to function.\n");
+
+    return;
+  }
+
+  fprintf(stderr, "nxagentPrintFormat: Dumping information for format at [%p]:\n\
+                   type=%d\n\
+                   depth=%d\n\
+                   red=%d\n\
+                   redMask=%d\n\
+                   green=%d\n\
+                   greenMask=%d\n\
+                   blue=%d\n\
+                   blueMask=%d\n\
+                   alpha=%d\n\
+                   alphaMask=%d\n",
+                   (void *) pFormat,
+                   pFormat -> type,
+                   pFormat -> depth,
+                   pFormat -> direct.red,
+                   pFormat -> direct.redMask,
+                   pFormat -> direct.green,
+                   pFormat -> direct.greenMask,
+                   pFormat -> direct.blue,
+                   pFormat -> direct.blueMask,
+                   pFormat -> direct.alpha,
+                   pFormat -> direct.alphaMask);
+}
+
+#endif
+
+Bool nxagentFillGlyphSet(GlyphSetPtr pGly)
+{
+  GlyphPtr    glyph;
+
+  int i;
+
+  #ifdef DEBUG
+  fprintf(stderr, "nxagentFillGlyphSet: GlyphSet at [%p] Refcount [%ld] Glyphs [%ld] "
+              "Format [%p] FDepth [%d] RemoteID [%ld].\n", (void *) pGly, pGly -> refcnt,
+                  pGly -> hash.hashSet -> size, (void *) pGly -> format, pGly -> fdepth, pGly -> remoteID);
+  #endif
+
+  /*
+   * The glyphs are synchronized when they
+   * are used in a composite text. During
+   * the reconnection we have only to mark
+   * corrupted the glyphs for each glyphset.
+   */
+
+  for (i = 0; i < pGly -> hash.hashSet -> size; i++)
+  {
+    glyph = pGly -> hash.table[i].glyph;
+
+    if (glyph && (glyph != DeletedGlyph))
+    {
+      pGly -> hash.table[i].corruptedGlyph = 1;
+    }
+  }
+
+  return TRUE;
+}
+
+void nxagentReconnectGlyphSet(void* p0, XID x1, void *p2)
+{
+  GlyphSetPtr pGly = (GlyphSetPtr) p0;
+
+  XRenderPictFormat *pForm = NULL;
+
+  int i;
+
+  if (nxagentReconnectTrap == 0)
+  {
+    #ifdef DEBUG
+    fprintf(stderr, "nxagentReconnectGlyphSet: GlyphSet at [%p].\n", (void *) pGly);
+    #endif
+
+    if (pGly -> format)
+    {
+      pForm = nxagentMatchingFormats(pGly -> format);
+    }
+
+    pGly -> remoteID = XRenderCreateGlyphSet(nxagentDisplay, pForm);
+
+    /*
+     * If we have deferred the operation, we
+     * have to check the number of references
+     * to the glyphset to update the X server.
+     */
+
+    if ((i = pGly -> refcnt) > 1)
+    {
+      while (i-- > 1)
+      {
+        nxagentReferenceGlyphSet(pGly);
+      }
+    }
+
+    #ifdef DEBUG
+
+    XSync(nxagentDisplay, 0);
+
+    #endif
+
+    nxagentFillGlyphSet(pGly);
+  }
+  else
+  {
+    pGly -> remoteID = 0;
+  }
+}
+
+Bool nxagentReconnectAllGlyphSet(void *p)
+{
+  Bool success = TRUE;
+  int i;
+
+  nxagentQueryFormats();
+
+  #ifdef DEBUG
+  fprintf(stderr, "nxagentReconnectAllGlyphSet\n");
+  #endif
+
+  for (i = 0; (i < MAXCLIENTS) && (success); i++)
+  {
+    if (clients[i])
+    {
+      FindClientResourcesByType(clients[i], GlyphSetType, nxagentReconnectGlyphSet, &success);
+    }
+  }
+
+  return success;
+}
+
+void nxagentReconnectPicture(pointer p0, XID x1, void *p2)
+{
+  PicturePtr pPicture = (PicturePtr) p0;
+  Bool *pBool = (Bool *) p2;
+  unsigned long mask = 0;
+
+  XRenderPictureAttributes attributes;
+  XRenderPictFormat        *pForm;
+
+  #ifdef TEST
+  fprintf(stderr, "nxagentReconnectPicture: Called with bool [%d] and picture at [%p].\n",
+              *pBool, (void *) pPicture);
+
+  fprintf(stderr, "nxagentReconnectPicture: Virtual picture is [%ld].\n",
+              nxagentPicture(pPicture));
+  #endif
+
+  /*
+   * Check if a previous operation has failed
+   * and that the involved objects are valid.
+   */
+
+  if (*pBool == 0 || pPicture == NULL ||
+          nxagentPicture(pPicture) != 0)
+  {
+    return;
+  }
+
+  if (pPicture -> repeat)
+  {
+    mask |= CPRepeat;
+
+    attributes.repeat = (Bool) pPicture -> repeat;
+  }
+
+  if (pPicture -> alphaMap)
+  {
+    if (!nxagentPicture(pPicture -> alphaMap))
+    {
+      nxagentReconnectPicture(pPicture -> alphaMap, 0, pBool);
+
+      if (!*pBool || !nxagentPicture(pPicture -> alphaMap))
+      {
+        return;
+      }
+    }
+
+    attributes.alpha_map = nxagentPicture(pPicture -> alphaMap);
+    attributes.alpha_x_origin = pPicture -> alphaOrigin.x;
+    attributes.alpha_y_origin = pPicture -> alphaOrigin.y;
+
+    mask |= (CPAlphaMap | CPAlphaXOrigin | CPAlphaYOrigin);
+  }
+
+  if (pPicture -> graphicsExposures)
+  {
+    attributes.graphics_exposures = pPicture -> graphicsExposures;
+
+    mask |= CPGraphicsExposure;
+  }
+
+  attributes.subwindow_mode = pPicture -> subWindowMode;
+
+  mask |= CPSubwindowMode;
+
+  attributes.poly_edge = pPicture -> polyEdge;
+
+  mask |= CPPolyEdge;
+
+  attributes.poly_mode = pPicture -> polyMode;
+
+  mask |= CPPolyMode;
+
+  attributes.dither = pPicture -> dither;
+
+  mask |= CPDither;
+
+  attributes.component_alpha = pPicture -> componentAlpha;
+
+  mask |= CPComponentAlpha;
+
+  pForm = NULL;
+
+  if (pPicture -> pFormat)
+  {
+    pForm = nxagentMatchingFormats(pPicture -> pFormat);
+
+    #ifdef DEBUG
+
+    nxagentPrintFormat(pForm);
+
+    #endif
+  }
+
+  if (!pForm)
+  {
+    *pBool = False;
+
+    return;
+  }
+
+  #ifdef TEST
+  fprintf(stderr, "nxagentReconnectPicture: Creating picture at [%p] with drawable [%ld] at [%p].\n",
+              (void *) pPicture, nxagentDrawable(pPicture -> pDrawable), (void *) pPicture -> pDrawable);
+
+  fprintf(stderr, "nxagentReconnectPicture: Format is at [%p] mask is [%ld] attributes are at [%p].\n",
+              (void *) pForm, mask, (void *) &attributes);
+  #endif
+
+  nxagentPicture(pPicture) = XRenderCreatePicture(nxagentDisplay,
+                                                  nxagentDrawable(pPicture -> pDrawable),
+                                                  pForm,
+                                                  mask,
+                                                  &attributes);
+
+  #ifdef TEST
+
+  XSync(nxagentDisplay, 0);
+
+  #endif
+
+  #ifdef TEST
+  fprintf(stderr, "nxagentReconnectPicture: Reconnected picture at [%p] with value [%ld].\n",
+              (void *) pPicture, nxagentPicture(pPicture));
+  #endif
+
+  if (nxagentAlphaEnabled == 1 && pPicture -> pDrawable -> depth == 32 &&
+          pPicture -> pFormat -> direct.alpha != 0)
+  {
+    if (pPicture -> pDrawable -> type == DRAWABLE_PIXMAP)
+    {
+      nxagentPixmapPriv((PixmapPtr) pPicture -> pDrawable) -> pPicture = pPicture;
+    }
+    else if (pPicture -> pDrawable -> type == DRAWABLE_WINDOW)
+    {
+      nxagentWindowPriv((WindowPtr) pPicture -> pDrawable) -> pPicture = pPicture;
+    }
+  }
+}
+
+Bool nxagentReconnectAllPicture(void *p)
+{
+  int i;
+  Bool r;
+
+  #ifdef TEST
+  fprintf(stderr, "nxagentReconnectAllPicture: Going to recreate all pictures.\n");
+  #endif
+
+  for (i = 0, r = 1; i < MAXCLIENTS; i++)
+  {
+    if (clients[i])
+    {
+      FindClientResourcesByType(clients[i], PictureType, nxagentReconnectPicture, &r);
+
+      #ifdef WARNING
+
+      if (r == False)
+      {
+        fprintf(stderr, "nxagentReconnectAllPicture: WARNING! Failed to recreate "
+                    "picture for client [%d].\n", i);
+      }
+
+      #endif
+    }
+  }
+
+  return True;
+}
+
+void nxagentDisconnectPicture(pointer p0, XID x1, void* p2)
+{
+  PicturePtr pPicture = (PicturePtr) p0;
+  Bool *pBool = (Bool *) p2;
+
+  #ifdef TEST
+  fprintf(stderr, "nxagentDisconnectPicture: Called with bool [%d] and picture at [%p].\n",
+              *pBool, (void *) pPicture);
+
+  fprintf(stderr, "nxagentDisconnectPicture: Virtual picture is [%ld].\n",
+              nxagentPicture(pPicture));
+  #endif
+
+  if (!*pBool || !pPicture)
+  {
+    return;
+  }
+
+  #ifdef DEBUG
+  fprintf(stderr, "nxagentDisconnectPicture: %p - XID %lx\n",
+              (void *) pPicture, nxagentPicture(pPicture));
+  #endif
+
+  nxagentPicture(pPicture) = None;
+}
+
+Bool nxagentDisconnectAllPicture()
+{
+  int i;
+  Bool r;
+
+  #ifdef DEBUG
+  fprintf(stderr, "nxagentDisconnectAllPicture.\n");
+  #endif
+
+  for (i = 0, r = 1; i < MAXCLIENTS; i++)
+  {
+    if (clients[i])
+    {
+      FindClientResourcesByType(clients[i], PictureType, nxagentDisconnectPicture, &r);
+
+      #ifdef WARNING
+
+      if (r == False)
+      {
+        fprintf(stderr, "nxagentDisconnectAllPicture: WARNING! Failed to disconnect "
+                    "picture for client [%d].\n", i);
+      }
+
+      #endif
+    }
+  }
+
+  return True;
+}
+