diff --git a/dlls/d3d10core/d3d10core_private.h b/dlls/d3d10core/d3d10core_private.h
index 2dcd89a818d..4297adfba84 100644
--- a/dlls/d3d10core/d3d10core_private.h
+++ b/dlls/d3d10core/d3d10core_private.h
@@ -217,6 +217,7 @@ struct d3d10_blend_state
 };
 
 HRESULT d3d10_blend_state_init(struct d3d10_blend_state *state) DECLSPEC_HIDDEN;
+struct d3d10_blend_state *unsafe_impl_from_ID3D10BlendState(ID3D10BlendState *iface) DECLSPEC_HIDDEN;
 
 /* ID3D10DepthStencilState */
 struct d3d10_depthstencil_state
@@ -269,6 +270,9 @@ struct d3d10_device
     struct wined3d_device_parent device_parent;
     struct wined3d_device *wined3d_device;
 
+    struct d3d10_blend_state *blend_state;
+    float blend_factor[4];
+    UINT sample_mask;
     struct d3d10_depthstencil_state *depth_stencil_state;
     UINT stencil_ref;
     struct d3d10_rasterizer_state *rasterizer_state;
diff --git a/dlls/d3d10core/device.c b/dlls/d3d10core/device.c
index ae3b865ff0d..95b337ae31e 100644
--- a/dlls/d3d10core/device.c
+++ b/dlls/d3d10core/device.c
@@ -318,8 +318,14 @@ static void STDMETHODCALLTYPE d3d10_device_OMSetRenderTargets(ID3D10Device *ifac
 static void STDMETHODCALLTYPE d3d10_device_OMSetBlendState(ID3D10Device *iface,
         ID3D10BlendState *blend_state, const FLOAT blend_factor[4], UINT sample_mask)
 {
-    FIXME("iface %p, blend_state %p, blend_factor [%f %f %f %f], sample_mask 0x%08x stub!\n",
+    struct d3d10_device *device = impl_from_ID3D10Device(iface);
+
+    TRACE("iface %p, blend_state %p, blend_factor [%f %f %f %f], sample_mask 0x%08x.\n",
             iface, blend_state, blend_factor[0], blend_factor[1], blend_factor[2], blend_factor[3], sample_mask);
+
+    device->blend_state = unsafe_impl_from_ID3D10BlendState(blend_state);
+    memcpy(device->blend_factor, blend_factor, 4 * sizeof(*blend_factor));
+    device->sample_mask = sample_mask;
 }
 
 static void STDMETHODCALLTYPE d3d10_device_OMSetDepthStencilState(ID3D10Device *iface,
diff --git a/dlls/d3d10core/state.c b/dlls/d3d10core/state.c
index 1d927cef320..9e64ea65b49 100644
--- a/dlls/d3d10core/state.c
+++ b/dlls/d3d10core/state.c
@@ -140,6 +140,15 @@ HRESULT d3d10_blend_state_init(struct d3d10_blend_state *state)
     return S_OK;
 }
 
+struct d3d10_blend_state *unsafe_impl_from_ID3D10BlendState(ID3D10BlendState *iface)
+{
+    if (!iface)
+        return NULL;
+    assert(iface->lpVtbl == &d3d10_blend_state_vtbl);
+
+    return impl_from_ID3D10BlendState(iface);
+}
+
 static inline struct d3d10_depthstencil_state *impl_from_ID3D10DepthStencilState(ID3D10DepthStencilState *iface)
 {
     return CONTAINING_RECORD(iface, struct d3d10_depthstencil_state, ID3D10DepthStencilState_iface);