diff --git a/dlls/d3d10core/d3d10core_private.h b/dlls/d3d10core/d3d10core_private.h
index e68754fedb6..f4535ce930d 100644
--- a/dlls/d3d10core/d3d10core_private.h
+++ b/dlls/d3d10core/d3d10core_private.h
@@ -189,6 +189,15 @@ HRESULT d3d10_pixel_shader_init(struct d3d10_pixel_shader *shader, struct d3d10_
 HRESULT shader_parse_signature(const char *data, DWORD data_size, struct wined3d_shader_signature *s) DECLSPEC_HIDDEN;
 void shader_free_signature(struct wined3d_shader_signature *s) DECLSPEC_HIDDEN;
 
+/* ID3D10BlendState */
+struct d3d10_blend_state
+{
+    const struct ID3D10BlendStateVtbl *vtbl;
+    LONG refcount;
+};
+
+HRESULT d3d10_blend_state_init(struct d3d10_blend_state *state) DECLSPEC_HIDDEN;
+
 /* ID3D10DepthStencilState */
 struct d3d10_depthstencil_state
 {
diff --git a/dlls/d3d10core/device.c b/dlls/d3d10core/device.c
index de623bcb818..b3da2ed4c00 100644
--- a/dlls/d3d10core/device.c
+++ b/dlls/d3d10core/device.c
@@ -919,9 +919,30 @@ static HRESULT STDMETHODCALLTYPE d3d10_device_CreatePixelShader(ID3D10Device *if
 static HRESULT STDMETHODCALLTYPE d3d10_device_CreateBlendState(ID3D10Device *iface,
         const D3D10_BLEND_DESC *desc, ID3D10BlendState **blend_state)
 {
-    FIXME("iface %p, desc %p, blend_state %p stub!\n", iface, desc, blend_state);
+    struct d3d10_blend_state *object;
+    HRESULT hr;
 
-    return E_NOTIMPL;
+    TRACE("iface %p, desc %p, blend_state %p.\n", iface, desc, blend_state);
+
+    object = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*object));
+    if (!object)
+    {
+        ERR("Failed to allocate D3D10 blend state object memory.\n");
+        return E_OUTOFMEMORY;
+    }
+
+    hr = d3d10_blend_state_init(object);
+    if (FAILED(hr))
+    {
+        WARN("Failed to initialize blend state, hr %#x.\n", hr);
+        HeapFree(GetProcessHeap(), 0, object);
+        return hr;
+    }
+
+    TRACE("Created blend state %p.\n", object);
+    *blend_state = (ID3D10BlendState *)object;
+
+    return S_OK;
 }
 
 static HRESULT STDMETHODCALLTYPE d3d10_device_CreateDepthStencilState(ID3D10Device *iface,
diff --git a/dlls/d3d10core/state.c b/dlls/d3d10core/state.c
index e0468c308e5..2eaa652a3ce 100644
--- a/dlls/d3d10core/state.c
+++ b/dlls/d3d10core/state.c
@@ -26,6 +26,117 @@ WINE_DEFAULT_DEBUG_CHANNEL(d3d10core);
 
 /* IUnknown methods */
 
+static HRESULT STDMETHODCALLTYPE d3d10_blend_state_QueryInterface(ID3D10BlendState *iface,
+        REFIID riid, void **object)
+{
+    TRACE("iface %p, riid %s, object %p.\n", iface, debugstr_guid(riid), object);
+
+    if (IsEqualGUID(riid, &IID_ID3D10BlendState)
+            || IsEqualGUID(riid, &IID_ID3D10DeviceChild)
+            || IsEqualGUID(riid, &IID_IUnknown))
+    {
+        IUnknown_AddRef(iface);
+        *object = iface;
+        return S_OK;
+    }
+
+    WARN("%s not implemented, returning E_NOINTERFACE.\n", debugstr_guid(riid));
+
+    *object = NULL;
+    return E_NOINTERFACE;
+}
+
+static ULONG STDMETHODCALLTYPE d3d10_blend_state_AddRef(ID3D10BlendState *iface)
+{
+    struct d3d10_blend_state *This = (struct d3d10_blend_state *)iface;
+    ULONG refcount = InterlockedIncrement(&This->refcount);
+
+    TRACE("%p increasing refcount to %u.\n", This, refcount);
+
+    return refcount;
+}
+
+static ULONG STDMETHODCALLTYPE d3d10_blend_state_Release(ID3D10BlendState *iface)
+{
+    struct d3d10_blend_state *This = (struct d3d10_blend_state *)iface;
+    ULONG refcount = InterlockedDecrement(&This->refcount);
+
+    TRACE("%p decreasing refcount to %u.\n", This, refcount);
+
+    if (!refcount)
+    {
+        HeapFree(GetProcessHeap(), 0, This);
+    }
+
+    return refcount;
+}
+
+/* ID3D10DeviceChild methods */
+
+static void STDMETHODCALLTYPE d3d10_blend_state_GetDevice(ID3D10BlendState *iface, ID3D10Device **device)
+{
+    FIXME("iface %p, device %p stub!\n", iface, device);
+}
+
+static HRESULT STDMETHODCALLTYPE d3d10_blend_state_GetPrivateData(ID3D10BlendState *iface,
+        REFGUID guid, UINT *data_size, void *data)
+{
+    FIXME("iface %p, guid %s, data_size %p, data %p stub!\n",
+            iface, debugstr_guid(guid), data_size, data);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT STDMETHODCALLTYPE d3d10_blend_state_SetPrivateData(ID3D10BlendState *iface,
+        REFGUID guid, UINT data_size, const void *data)
+{
+    FIXME("iface %p, guid %s, data_size %u, data %p stub!\n",
+            iface, debugstr_guid(guid), data_size, data);
+
+    return E_NOTIMPL;
+}
+
+static HRESULT STDMETHODCALLTYPE d3d10_blend_state_SetPrivateDataInterface(ID3D10BlendState *iface,
+        REFGUID guid, const IUnknown *data)
+{
+    FIXME("iface %p, guid %s, data %p stub!\n", iface, debugstr_guid(guid), data);
+
+    return E_NOTIMPL;
+}
+
+/* ID3D10BlendState methods */
+
+static void STDMETHODCALLTYPE d3d10_blend_state_GetDesc(ID3D10BlendState *iface,
+        D3D10_BLEND_DESC *desc)
+{
+    FIXME("iface %p, desc %p stub!\n", iface, desc);
+}
+
+static const struct ID3D10BlendStateVtbl d3d10_blend_state_vtbl =
+{
+    /* IUnknown methods */
+    d3d10_blend_state_QueryInterface,
+    d3d10_blend_state_AddRef,
+    d3d10_blend_state_Release,
+    /* ID3D10DeviceChild methods */
+    d3d10_blend_state_GetDevice,
+    d3d10_blend_state_GetPrivateData,
+    d3d10_blend_state_SetPrivateData,
+    d3d10_blend_state_SetPrivateDataInterface,
+    /* ID3D10BlendState methods */
+    d3d10_blend_state_GetDesc,
+};
+
+HRESULT d3d10_blend_state_init(struct d3d10_blend_state *state)
+{
+    state->vtbl = &d3d10_blend_state_vtbl;
+    state->refcount = 1;
+
+    return S_OK;
+}
+
+/* IUnknown methods */
+
 static HRESULT STDMETHODCALLTYPE d3d10_depthstencil_state_QueryInterface(ID3D10DepthStencilState *iface,
         REFIID riid, void **object)
 {