[Bug 17975] New: rendering problem in both oblivion and fallout3

http://bugs.winehq.org/show_bug.cgi?id=17975

Summary: rendering problem in both oblivion and fallout3
           Product: Wine
           Version: 1.1.18
          Platform: PC
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: directx-d3d
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

rendering problem in both oblivion and fallout3 (see attached screenshot)

environement:
OS: ubuntu jaunty
arch: intel quad core extreme
gfx: geforce 9600 gt
driver: nvidia 180.44
wine: 1.1.18

regedit settings:
Current_user/Software/Wine/Direct3D 
 "DirectDrawRenderer"="gdi" 
 "OffscreenRenderingMode"="fbo" 
 "PixelShaderMode"="enabled" 
 "SoftwareEmulation"="enabled" 
 "UseGLSL"="enable" 
 "VertexShaderMode"="hardware" 
 "VideoDescription"="NVIDIA GeForce 9600 GT" 
 "VideoDriver"="nv4_disp.dll" 
 "VideoMemorySize"="512"

applyed fallout d3d patch (the updated version) here:
http://bugs.winehq.org/attachment.cgi?id=20312

both game install and run fine but while indoors (dungeon, shops, ..) are fine,
outdoors (in both cyrodiil and wasteland) have corrupted area:
missing floor and terrains and corrupted trees.
it's not always true though, i just need to walk for a little while 1 or 2min
and i will encounter such area.
if i save and exit the game, and then reload the are is displayed correctly,
then i walk around for a while and then i find another corrupted area.
(see screenshot)

tnx for your attention