1 files changed, 188 insertions, 23 deletions

diff --git a/xorg-server/hw/xquartz/xpr/dri.c b/xorg-server/hw/xquartz/xpr/dri.c
index 50b478b9c..f570bee5d 100644
--- a/xorg-server/hw/xquartz/xpr/dri.c
+++ b/xorg-server/hw/xquartz/xpr/dri.c
@@ -2,7 +2,7 @@
 
 Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas.
 Copyright 2000 VA Linux Systems, Inc.
-Copyright (c) 2002 Apple Computer, Inc.
+Copyright (c) 2002, 2009 Apple Computer, Inc.
 All Rights Reserved.
 
 Permission is hereby granted, free of charge, to any person obtaining a
@@ -46,10 +46,12 @@ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #include <unistd.h>
 #endif
 
-#define NEED_REPLIES
-#define NEED_EVENTS
 #include <X11/X.h>
 #include <X11/Xproto.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+#include <sys/types.h>
+#include <sys/stat.h>
 #include "misc.h"
 #include "dixstruct.h"
 #include "extnsionst.h"
@@ -68,6 +70,7 @@ SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #include "rootless.h"
 #include "x-hash.h"
 #include "x-hook.h"
+#include "driWrap.h"
 
 #include <AvailabilityMacros.h>
 
@@ -77,11 +80,15 @@ static int DRIWindowPrivKeyIndex;
 static DevPrivateKey DRIWindowPrivKey = &DRIWindowPrivKeyIndex;
 static int DRIPixmapPrivKeyIndex;
 static DevPrivateKey DRIPixmapPrivKey = &DRIPixmapPrivKeyIndex;
+static int DRIPixmapBufferPrivKeyIndex;
+static DevPrivateKey DRIPixmapBufferPrivKey = &DRIPixmapBufferPrivKeyIndex;
 
 static RESTYPE DRIDrawablePrivResType;
 
 static x_hash_table *surface_hash;      /* maps surface ids -> drawablePrivs */
 
+static Bool DRIFreePixmapImp(DrawablePtr pDrawable);
+
 /* FIXME: don't hardcode this? */
 #define CG_INFO_FILE "/System/Library/Frameworks/ApplicationServices.framework/Frameworks/CoreGraphics.framework/Resources/Info-macos.plist"
 
@@ -90,6 +97,18 @@ static x_hash_table *surface_hash;      /* maps surface ids -> drawablePrivs */
 #define CG_REQUIRED_MINOR 157
 #define CG_REQUIRED_MICRO 11
 
+typedef struct {
+    DrawablePtr pDrawable;
+    int refCount;
+    int bytesPerPixel;
+    int width;
+    int height;
+    char shmPath[PATH_MAX];
+    int fd; /* From shm_open (for now) */
+    size_t length; /* length of buffer */
+    void *buffer;       
+} DRIPixmapBuffer, *DRIPixmapBufferPtr;
+
 /* Returns version as major.minor.micro in 10.10.10 fixed form */
 static unsigned int
 get_cg_version (void)
@@ -241,7 +260,7 @@ DRIFinishScreenInit(ScreenPtr pScreen)
 
     //    ErrorF("[DRI] screen %d installation complete\n", pScreen->myNum);
 
-    return TRUE;
+    return DRIWrapInit(pScreen);
 }
 
 void
@@ -408,7 +427,7 @@ CreateSurfaceForWindow(ScreenPtr pScreen, WindowPtr pWin, xp_window_id *widPtr)
     return pDRIDrawablePriv;
 }
 
-/* Return FALSE if an error occurs. */
+/* Return NULL if an error occurs. */
 static DRIDrawablePrivPtr
 CreateSurfaceForPixmap(ScreenPtr pScreen, PixmapPtr pPix) {
     DRIDrawablePrivPtr pDRIDrawablePriv;
@@ -417,7 +436,6 @@ CreateSurfaceForPixmap(ScreenPtr pScreen, PixmapPtr pPix) {
 
     if (pDRIDrawablePriv == NULL) {
 	xp_error err;
-	xp_window_changes wc;
 
 	/* allocate a DRI Window Private record */
 	if (!(pDRIDrawablePriv = xcalloc(1, sizeof(*pDRIDrawablePriv)))) {
@@ -439,18 +457,10 @@ CreateSurfaceForPixmap(ScreenPtr pScreen, PixmapPtr pPix) {
 	    return NULL;
 	}
 
-	wc.x = 0;
-        wc.y = 0;
-        wc.width = pPix->drawable.width;
-        wc.height = pPix->drawable.height;
-
-	err = xp_configure_surface(pDRIDrawablePriv->sid, XP_BOUNDS, &wc);
-
-	if(err != Success) {
-	    xp_destroy_surface(pDRIDrawablePriv->sid);
-	    xfree(pDRIDrawablePriv);
-	    return NULL;
-	}
+	/* 
+	 * The DRIUpdateSurface will be called to resize the surface
+	 * after this function, if the export is successful.
+	 */
 
 	/* save private off of preallocated index */
 	dixSetPrivate(&pPix->devPrivates, DRIPixmapPrivKey,
@@ -491,21 +501,39 @@ DRICreateSurface(ScreenPtr pScreen, Drawable id,
         /* NOT_DONE */
         return FALSE;
     }
-
     
-
+    
     /* Finish initialization of new surfaces */
     if (pDRIDrawablePriv->refCount == 0) {
         unsigned int key[2] = {0};
         xp_error err;
 
         /* try to give the client access to the surface */
-        if (client_id != 0 && wid != 0) {
+        if (client_id != 0) {
+	    /*
+	     * Xplugin accepts a 0 wid if the surface id is offscreen, such 
+	     * as for a pixmap.
+	     */
             err = xp_export_surface(wid, pDRIDrawablePriv->sid,
                                     client_id, key);
             if (err != Success) {
                 xp_destroy_surface(pDRIDrawablePriv->sid);
                 xfree(pDRIDrawablePriv);
+		
+		/* 
+		 * Now set the dix privates to NULL that were previously set.
+		 * This prevents reusing an invalid pointer.
+		 */
+		if(pDrawable->type == DRAWABLE_WINDOW) {
+		    WindowPtr pWin = (WindowPtr)pDrawable;
+		    
+		    dixSetPrivate(&pWin->devPrivates, DRIWindowPrivKey, NULL);
+		} else if(pDrawable->type == DRAWABLE_PIXMAP) {
+		    PixmapPtr pPix = (PixmapPtr)pDrawable;
+		    
+		    dixSetPrivate(&pPix->devPrivates, DRIPixmapPrivKey, NULL);
+		}
+		
                 return FALSE;
             }
         }
@@ -591,8 +619,9 @@ DRIDrawablePrivDelete(pointer pResource, XID id)
         pDRIDrawablePriv = DRI_DRAWABLE_PRIV_FROM_PIXMAP(pPix);
     }
 
-    if (pDRIDrawablePriv == NULL)
-        return FALSE;
+    if (pDRIDrawablePriv == NULL) {
+	return DRIFreePixmapImp(pDrawable);
+    }
 
     if (pDRIDrawablePriv->drawableIndex != -1) {
         /* release drawable table entry */
@@ -785,3 +814,139 @@ DRISurfaceNotify(xp_surface_id id, int kind)
                            DRIDrawablePrivResType, FALSE);
     }
 }
+
+Bool DRICreatePixmap(ScreenPtr pScreen, Drawable id,
+		     DrawablePtr pDrawable, char *path,
+		     size_t pathmax) 
+{
+    DRIPixmapBufferPtr shared;
+    PixmapPtr pPix;
+    
+    if(pDrawable->type != DRAWABLE_PIXMAP)
+	return FALSE;
+
+    pPix = (PixmapPtr)pDrawable;
+
+    shared = xalloc(sizeof(*shared));
+    if(NULL == shared) {
+        FatalError("failed to allocate DRIPixmapBuffer in %s\n", __func__);
+    }
+        
+    shared->pDrawable = pDrawable;
+    shared->refCount = 1;
+
+    if(pDrawable->bitsPerPixel >= 24) {
+	shared->bytesPerPixel = 4;
+    } else if(pDrawable->bitsPerPixel <= 16) {
+	shared->bytesPerPixel = 2;
+    }
+    
+    shared->width = pDrawable->width;
+    shared->height = pDrawable->height;
+    
+    if(-1 == snprintf(shared->shmPath, sizeof(shared->shmPath),
+                      "%d_0x%lx", getpid(),
+                      (unsigned long)id)) {
+        FatalError("buffer overflow in %s\n", __func__);
+    }
+    
+    shared->fd = shm_open(shared->shmPath, 
+                          O_RDWR | O_EXCL | O_CREAT, 
+                          S_IRUSR | S_IWUSR | S_IROTH | S_IWOTH);
+    
+    if(-1 == shared->fd) {
+	xfree(shared);
+        return FALSE;
+    }   
+    
+    shared->length = shared->width * shared->height * shared->bytesPerPixel;
+    
+    if(-1 == ftruncate(shared->fd, shared->length)) {
+	ErrorF("failed to ftruncate (extend) file.");
+	shm_unlink(shared->shmPath);
+	close(shared->fd);
+	xfree(shared);
+	return FALSE;
+    }
+
+    shared->buffer = mmap(NULL, shared->length,
+                          PROT_READ | PROT_WRITE,
+                          MAP_FILE | MAP_SHARED, shared->fd, 0);
+    
+    if(MAP_FAILED == shared->buffer) {
+	ErrorF("failed to mmap shared memory.");
+	shm_unlink(shared->shmPath);
+	close(shared->fd);
+	xfree(shared);
+	return FALSE;
+    }
+    
+    strncpy(path, shared->shmPath, pathmax);
+    path[pathmax - 1] = '\0';
+    
+    dixSetPrivate(&pPix->devPrivates, DRIPixmapBufferPrivKey, shared);
+
+    AddResource(id, DRIDrawablePrivResType, (pointer)pDrawable);
+
+    return TRUE;
+}
+
+
+Bool DRIGetPixmapData(DrawablePtr pDrawable, int *width, int *height,
+		      int *pitch, int *bpp, void **ptr) {
+    PixmapPtr pPix;
+    DRIPixmapBufferPtr shared;
+
+    if(pDrawable->type != DRAWABLE_PIXMAP)
+	return FALSE;
+
+    pPix = (PixmapPtr)pDrawable;
+
+    shared = dixLookupPrivate(&pPix->devPrivates, DRIPixmapBufferPrivKey);
+
+    if(NULL == shared)
+	return FALSE;
+
+    assert(pDrawable->width == shared->width);
+    assert(pDrawable->height == shared->height);
+    
+    *width = shared->width;
+    *height = shared->height;
+    *bpp = shared->bytesPerPixel;
+    *pitch = shared->width * shared->bytesPerPixel;
+    *ptr = shared->buffer;    
+
+    return TRUE;
+}
+
+static Bool
+DRIFreePixmapImp(DrawablePtr pDrawable) {
+    DRIPixmapBufferPtr shared;
+    PixmapPtr pPix;
+
+    if(pDrawable->type != DRAWABLE_PIXMAP)
+	return FALSE;
+
+    pPix = (PixmapPtr)pDrawable;
+
+    shared = dixLookupPrivate(&pPix->devPrivates, DRIPixmapBufferPrivKey);
+
+    if(NULL == shared)
+	return FALSE;
+
+    close(shared->fd);
+    munmap(shared->buffer, shared->length);
+    shm_unlink(shared->shmPath);
+    xfree(shared);
+
+    dixSetPrivate(&pPix->devPrivates, DRIPixmapBufferPrivKey, (pointer)NULL);
+
+    return TRUE;
+}
+
+void 
+DRIDestroyPixmap(DrawablePtr pDrawable) {
+    if(DRIFreePixmapImp(pDrawable))
+	FreeResourceByType(pDrawable->id, DRIDrawablePrivResType, FALSE);
+
+}