Add Distributed Multihead X (DMX) support

1 files changed, 53 insertions, 0 deletions

diff --git a/render/picture.c b/render/picture.c
index ad746b277..ca95e56b2 100644
--- a/render/picture.c
+++ b/render/picture.c
@@ -46,6 +46,57 @@ RESTYPE		PictFormatType;
 RESTYPE		GlyphSetType;
 int		PictureCmapPolicy = PictureCmapPolicyDefault;
 
+/* Picture Private machinery */
+
+static int picturePrivateCount;
+
+void
+ResetPicturePrivateIndex (void)
+{
+    picturePrivateCount = 0;
+}
+
+int
+AllocatePicturePrivateIndex (void)
+{
+    return picturePrivateCount++;
+}
+
+Bool
+AllocatePicturePrivate (ScreenPtr pScreen, int index2, unsigned int amount)
+{
+    PictureScreenPtr	ps = GetPictureScreen(pScreen);
+    unsigned int	oldamount;
+
+    /* Round up sizes for proper alignment */
+    amount = ((amount + (sizeof(long) - 1)) / sizeof(long)) * sizeof(long);
+
+    if (index2 >= ps->PicturePrivateLen)
+    {
+	unsigned int *nsizes;
+
+	nsizes = (unsigned int *)xrealloc(ps->PicturePrivateSizes,
+					  (index2 + 1) * sizeof(unsigned int));
+	if (!nsizes)
+	    return FALSE;
+	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 TRUE;
+}
+
+
 Bool
 PictureDestroyWindow (WindowPtr pWindow)
 {
@@ -82,6 +133,8 @@ PictureCloseScreen (int index, ScreenPtr pScreen)
 	if (ps->formats[n].type == PictTypeIndexed)
 	    (*ps->CloseIndexed) (pScreen, &ps->formats[n]);
     SetPictureScreen(pScreen, 0);
+    if (ps->PicturePrivateSizes)
+	xfree (ps->PicturePrivateSizes);
     xfree (ps->formats);
     xfree (ps);
     return ret;