"""probe_rs_base.py <pid>
Walk s_Resources to find a RenderSurface base (vfptr=0x0079a67c) entry.
Dump its primary view (entry-0x30 .. entry-0x30+0x150) so we can see
what's at primary+0x64 and primary+0x114 (where v5 reads).
Also check primary+0x144 which is OOB for RS base (size 0x120)."""
import ctypes, ctypes.wintypes as wt, sys, struct

PROCESS_VM_READ = 0x10
PROCESS_QUERY_INFORMATION = 0x400
k = ctypes.windll.kernel32
k.OpenProcess.argtypes = [wt.DWORD, wt.BOOL, wt.DWORD]; k.OpenProcess.restype = wt.HANDLE
k.ReadProcessMemory.argtypes = [wt.HANDLE, wt.LPCVOID, wt.LPVOID, ctypes.c_size_t, ctypes.POINTER(ctypes.c_size_t)]
k.ReadProcessMemory.restype = wt.BOOL

S_RESOURCES_M_DATA = 0x008398C4
S_RESOURCES_M_NUM  = 0x008398CC
RS_BASE_VTABLE     = 0x0079a67c

def rd(h, va, n):
    buf = (ctypes.c_ubyte * n)(); sz = ctypes.c_size_t(0)
    if not k.ReadProcessMemory(h, va, buf, n, ctypes.byref(sz)): return None
    return bytes(buf[:sz.value])

def rd_u32(h, va):
    b = rd(h, va, 4); return struct.unpack('<I', b)[0] if b else None

pid = int(sys.argv[1])
h = k.OpenProcess(PROCESS_VM_READ | PROCESS_QUERY_INFORMATION, False, pid)
if not h: print(f"OpenProcess err={ctypes.get_last_error()}"); sys.exit(2)

m_data = rd_u32(h, S_RESOURCES_M_DATA)
m_num  = rd_u32(h, S_RESOURCES_M_NUM)
print(f"s_Resources: m_data=0x{m_data:08x} m_num={m_num}")

if not m_data or not m_num:
    print("empty"); sys.exit(0)

# Walk up to first 5 RS base entries
n_found = 0
for i in range(min(m_num, 50000)):
    entry = rd_u32(h, m_data + i * 4)
    if not entry: continue
    vt = rd_u32(h, entry)
    if vt != RS_BASE_VTABLE: continue
    # Got a RS base. Entry = GR-view. Primary = entry - 0x30.
    primary = entry - 0x30
    print(f"\n=== RS base entry #{i} ===")
    print(f"  entry (GR view)  = 0x{entry:08x}")
    print(f"  primary          = 0x{primary:08x}")
    # Read primary + 0x60..0x70 and 0x110..0x120 and 0x140..0x150
    for off, label in [(0x60, "primary+0x60..0x70 (around 0x64 1st delete)"),
                       (0x110, "primary+0x110..0x120 (around 0x114 2nd delete)"),
                       (0x120, "primary+0x120..0x130 (RenderSurfaceD3D fields if it were one)"),
                       (0x140, "primary+0x140..0x150 (OOB for RS base, what v5 reads)")]:
        b = rd(h, primary + off, 16)
        if b:
            words = ' '.join(f"{struct.unpack('<I', b[j:j+4])[0]:08x}" for j in range(0, 16, 4))
            print(f"  {label}: {words}")
    # And read primary+0..0x30 (DBObj part) and primary+0x30..0x60 (GR part)
    n_found += 1
    if n_found >= 3: break

if n_found == 0:
    print("no RS base entries found in walk")