1 files changed, 122 insertions, 0 deletions
diff --git a/xorg-server/dix/pixmap.c b/xorg-server/dix/pixmap.c
new file mode 100644
index 000000000..82e388cf3
--- /dev/null
+++ b/xorg-server/dix/pixmap.c
@@ -0,0 +1,122 @@
+/*
+
+Copyright 1993, 1998  The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall
+not be used in advertising or otherwise to promote the sale, use or
+other dealings in this Software without prior written authorization
+from The Open Group.
+
+*/
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <X11/X.h>
+#include "scrnintstr.h"
+#include "misc.h"
+#include "os.h"
+#include "windowstr.h"
+#include "resource.h"
+#include "dixstruct.h"
+#include "gcstruct.h"
+#include "servermd.h"
+#include "site.h"
+
+
+/*
+ *  Scratch pixmap management and device independent pixmap allocation
+ *  function.
+ */
+
+
+/* callable by ddx */
+_X_EXPORT PixmapPtr
+GetScratchPixmapHeader(ScreenPtr pScreen, int width, int height, int depth, 
+                       int bitsPerPixel, int devKind, pointer pPixData)
+{
+    PixmapPtr pPixmap = pScreen->pScratchPixmap;
+
+    if (pPixmap)
+	pScreen->pScratchPixmap = NULL;
+    else
+	/* width and height of 0 means don't allocate any pixmap data */
+	pPixmap = (*pScreen->CreatePixmap)(pScreen, 0, 0, depth, 0);
+
+    if (pPixmap) {
+	if ((*pScreen->ModifyPixmapHeader)(pPixmap, width, height, depth,
+					   bitsPerPixel, devKind, pPixData))
+	    return pPixmap;
+	(*pScreen->DestroyPixmap)(pPixmap);
+    }
+    return NullPixmap;
+}
+
+
+/* callable by ddx */
+_X_EXPORT void
+FreeScratchPixmapHeader(PixmapPtr pPixmap)
+{
+    if (pPixmap)
+    {
+	ScreenPtr pScreen = pPixmap->drawable.pScreen;
+
+	pPixmap->devPrivate.ptr = NULL; /* lest ddx chases bad ptr */
+	if (pScreen->pScratchPixmap)
+	    (*pScreen->DestroyPixmap)(pPixmap);
+	else
+	    pScreen->pScratchPixmap = pPixmap;
+    }
+}
+
+
+Bool
+CreateScratchPixmapsForScreen(int scrnum)
+{
+    /* let it be created on first use */
+    screenInfo.screens[scrnum]->pScratchPixmap = NULL;
+    return TRUE;
+}
+
+
+void
+FreeScratchPixmapsForScreen(int scrnum)
+{
+    FreeScratchPixmapHeader(screenInfo.screens[scrnum]->pScratchPixmap);
+}
+
+
+/* callable by ddx */
+_X_EXPORT PixmapPtr
+AllocatePixmap(ScreenPtr pScreen, int pixDataSize)
+{
+    PixmapPtr pPixmap;
+
+    if (pScreen->totalPixmapSize > ((size_t)-1) - pixDataSize)
+	return NullPixmap;
+    
+    pPixmap = (PixmapPtr)xalloc(pScreen->totalPixmapSize + pixDataSize);
+    if (!pPixmap)
+	return NullPixmap;
+
+    pPixmap->devPrivates = NULL;
+    return pPixmap;
+}