wined3d: enable two sided stencil in the caps

[Jan Zerebecki]

If this patch is rejected from inclusion, please tell me why, as i would have to
ask anyway.

From: Jan Zerebecki <jan.wine at zerebecki.de>
Changelog:
wined3d: enable two sided stencil in the caps
---

 dlls/wined3d/directx.c |    5 +++++
 include/d3d9caps.h     |    1 +
 include/d3dcaps.h      |    1 +
 3 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/dlls/wined3d/directx.c b/dlls/wined3d/directx.c
index d699d83..9389cb7 100644
--- a/dlls/wined3d/directx.c
+++ b/dlls/wined3d/directx.c
@@ -1635,6 +1635,11 @@ HRESULT WINAPI IWineD3DImpl_GetDeviceCap
       *pCaps->StencilCaps |= D3DSTENCILCAPS_DECR  |
                              D3DSTENCILCAPS_INCR;
     }
+    if ( This->dxVersion > 8 &&
+        ( GL_SUPPORT(EXT_STENCIL_TWO_SIDE) ||
+            GL_SUPPORT(ATI_SEPARATE_STENCIL) ) ) {
+        *pCaps->StencilCaps |= D3DSTENCILCAPS_TWOSIDED;
+    }
 
     *pCaps->FVFCaps = D3DFVFCAPS_PSIZE | 0x0008; /* 8 texture coords */
 
diff --git a/include/d3d9caps.h b/include/d3d9caps.h
index ba05e79..573d459 100644
--- a/include/d3d9caps.h
+++ b/include/d3d9caps.h
@@ -187,6 +187,7 @@
 #define D3DSTENCILCAPS_INVERT                    0x20
 #define D3DSTENCILCAPS_INCR                      0x40
 #define D3DSTENCILCAPS_DECR                      0x80
+#define D3DSTENCILCAPS_TWOSIDED                  0x100
 
 #define D3DTEXOPCAPS_DISABLE                     0x0000001
 #define D3DTEXOPCAPS_SELECTARG1                  0x0000002
diff --git a/include/d3dcaps.h b/include/d3dcaps.h
index b44c49d..f96ca5d 100644
--- a/include/d3dcaps.h
+++ b/include/d3dcaps.h
@@ -311,6 +311,7 @@ typedef struct _D3DDeviceDesc7 {
 #define D3DSTENCILCAPS_INVERT   0x00000020
 #define D3DSTENCILCAPS_INCR     0x00000040
 #define D3DSTENCILCAPS_DECR     0x00000080
+#define D3DSTENCILCAPS_TWOSIDED 0x00000100
 
 #define D3DTEXOPCAPS_DISABLE                    0x00000001
 #define D3DTEXOPCAPS_SELECTARG1                 0x00000002