d3dx9: ID3DXConstantTable::SetMatrix should set scalar constants.

dlls/d3dx9_36/shader.c

@@ -988,6 +988,12 @@ static HRESULT set_matrix_array(ID3DXConstantTable *iface, IDirect3DDevice9 *dev
         row_offset = 4;
         registers_per_matrix = desc.Rows;
     }
+    else if (desc.Class == D3DXPC_SCALAR)
+    {
+        column_offset = 1;
+        row_offset = 1;
+        registers_per_matrix = 1;
+    }
     else
     {
         FIXME("Unhandled variable class %#x\n", desc.Class);

dlls/d3dx9_36/tests/shader.c

@@ -636,6 +636,16 @@ static void test_setting_basic_table(IDirect3DDevice9 *device)
             "The variable f was not set correctly by ID3DXConstantTable_SetVector, got %f, should be %f\n",
             out[0], f4.x);
 
+    memset(out, 0, sizeof(out));
+    IDirect3DDevice9_SetVertexShaderConstantF(device, 6, out, 1);
+    res = ID3DXConstantTable_SetMatrix(ctable, device, "f", &mvp);
+    ok(res == D3D_OK, "ID3DXConstantTable_SetMatrix failed on variable f: 0x%08x\n", res);
+
+    IDirect3DDevice9_GetVertexShaderConstantF(device, 6, out, 1);
+    ok(out[0] == U(S(mvp))._11 && out[1] == 0.0f && out[2] == 0.0f && out[3] == 0.0f,
+            "The variable f was not set correctly by ID3DXConstantTable_SetMatrix, got %f, should be %f\n",
+            out[0], U(S(mvp))._11);
+
     refcnt = ID3DXConstantTable_Release(ctable);
     ok(refcnt == 0, "The constant table reference count was %u, should be 0\n", refcnt);
 }