Changeset 49088 in vbox for trunk/src/VBox/GuestHost/OpenGL/util

Timestamp:

Oct 14, 2013 3:38:39 PM (11 years ago)

Author:

vboxsync

Message:

crOpenGL: fix hgcm fallback

File:

• trunk/src/VBox/GuestHost/OpenGL/util/vboxhgcm.c (modified) (2 diffs)

trunk/src/VBox/GuestHost/OpenGL/util/vboxhgcm.c

@@ -1999 +1999 @@
             {
                 VBOXUHGSMI_BUFFER_TYPE_FLAGS Flags = {0};
-                PVBOXUHGSMI_BUFFER pOldBuf = pClient->pHGBuffer;
+                PVBOXUHGSMI_BUFFER pNewBuf;
                 CRASSERT(!pClient->pvHGBuffer);
                 CRASSERT(cbWriteback>pClient->pHGBuffer->cbBuffer);
                 crDebug("Reallocating host buffer from %d to %d bytes", conn->cbHostBufferAllocated, cbWriteback);
 
-                rc = pClient->pHgsmi->pfnBufferCreate(pClient->pHgsmi, CRVBOXHGSMI_PAGE_ALIGN(cbWriteback), Flags, &pClient->pHGBuffer);
+                rc = pClient->pHgsmi->pfnBufferCreate(pClient->pHgsmi, CRVBOXHGSMI_PAGE_ALIGN(cbWriteback), Flags, &pNewBuf);
                 if (RT_SUCCESS(rc))
                 {
-                    rc = pOldBuf->pfnDestroy(pOldBuf);
+                    rc = pClient->pHGBuffer->pfnDestroy(pClient->pHGBuffer);
                     CRASSERT(RT_SUCCESS(rc));
+
+                    pClient->pHGBuffer = pNewBuf;
 
                     _crVBoxHGSMIReadExact(conn, pClient/*, cbWriteback*/);
@@ -2015 +2017 @@
                 {
                     crWarning("_crVBoxHGSMIWriteReadExact: pfnBufferCreate(%d) failed!", CRVBOXHGSMI_PAGE_ALIGN(cbWriteback));
-                    crFree(conn->pHostBuffer);
-                    conn->cbHostBufferAllocated = cbWriteback;
-                    conn->pHostBuffer = crAlloc(conn->cbHostBufferAllocated);
+                    if (conn->cbHostBufferAllocated < cbWriteback)
+                    {
+                        crFree(conn->pHostBuffer);
+                        conn->cbHostBufferAllocated = cbWriteback;
+                        conn->pHostBuffer = crAlloc(conn->cbHostBufferAllocated);
+                    }
                     crVBoxHGCMReadExact(conn, NULL, cbWriteback);
                 }