diff --git a/CMakeLists.txt b/CMakeLists.txt
index f765036cdd..e2ad451358 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -13,16 +13,13 @@ set_property(GLOBAL PROPERTY 3RDPARTY_USE_FOLDERS ON)
 
 set(BUILD_SHARED_LIBS ON)
 
-IF("${BUILD_TYPE}" STREQUAL "${CMAKE_BUILD_TYPE}" AND "${BUILD_BITNESS}" STREQUAL "${BUILD_BITNESS1}")
+IF("${BUILD_TYPE}" STREQUAL "${CMAKE_BUILD_TYPE}")
   SET(CHANGES_ARE_NEEDED OFF)
 ELSE()
   SET(CHANGES_ARE_NEEDED ON)
 ENDIF()
 
-set(BUILD_BITNESS 32 CACHE STRING "Bitness of the OCCT project")
-SET_PROPERTY(CACHE BUILD_BITNESS PROPERTY STRINGS 32 64)
-
-SET(BUILD_BITNESS1 ${BUILD_BITNESS} CACHE INTERNAL "Temporary bitness is created to check whether change 3rdparty paths or not" FORCE)
+MATH(EXPR COMPILER_BITNESS "32 + 32*(${CMAKE_SIZEOF_VOID_P}/8)")
 
 SET( CMAKE_BUILD_TYPE ${BUILD_TYPE} CACHE INTERNAL "Build type of the OCCT" FORCE )
 
@@ -54,7 +51,7 @@ else()
   SET(COMPILER ${CMAKE_GENERATOR})
 endif()
 
-if (${BUILD_BITNESS} STREQUAL 64)
+if (${COMPILER_BITNESS} STREQUAL 64)
   add_definitions(-D_OCC64)
 endif()
 
@@ -80,7 +77,10 @@ IF(WIN32)
   ENDIF()
 ENDIF()
 
-# set warning level 4
+# sse2
+add_definitions(/arch:SSE2)
+
+# warning level 4
 IF(MSVC)
   if(CMAKE_CXX_FLAGS MATCHES "/W[0-4]")
     string(REGEX REPLACE "/W[0-4]" "/W4" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
@@ -135,9 +135,9 @@ ENDFUNCTION()
 FUNCTION(FIND_PRODUCT_DIR ROOT_DIR PRODUCT_NAME RESULT)
   string( TOLOWER "${PRODUCT_NAME}" lower_PRODUCT_NAME )
   
-  LIST(APPEND SEARCH_TEMPLATES "${lower_PRODUCT_NAME}.*${COMPILER}.*${BUILD_BITNESS}")
-  LIST(APPEND SEARCH_TEMPLATES "${lower_PRODUCT_NAME}.*[0-9.]+.*${COMPILER}.*${BUILD_BITNESS}")
-  LIST(APPEND SEARCH_TEMPLATES "${lower_PRODUCT_NAME}.*[0-9.]+.*${BUILD_BITNESS}")
+  LIST(APPEND SEARCH_TEMPLATES "${lower_PRODUCT_NAME}.*${COMPILER}.*${COMPILER_BITNESS}")
+  LIST(APPEND SEARCH_TEMPLATES "${lower_PRODUCT_NAME}.*[0-9.]+.*${COMPILER}.*${COMPILER_BITNESS}")
+  LIST(APPEND SEARCH_TEMPLATES "${lower_PRODUCT_NAME}.*[0-9.]+.*${COMPILER_BITNESS}")
   LIST(APPEND SEARCH_TEMPLATES "${lower_PRODUCT_NAME}.*[0-9.]+")
   LIST(APPEND SEARCH_TEMPLATES "${lower_PRODUCT_NAME}")
   
@@ -356,7 +356,7 @@ ENDIF()
 IF (3RDPARTY_USE_TBB)
   ADD_DEFINITIONS(-DHAVE_TBB)
 
-  IF(${BUILD_BITNESS} STREQUAL 32)
+  IF(${COMPILER_BITNESS} STREQUAL 32)
     SET (TBB_ARCH_NAME ia32)
   ELSE()
     SET (TBB_ARCH_NAME intel64)
diff --git a/src/QABugs/QABugs_11.cxx b/src/QABugs/QABugs_11.cxx
index 69ab34dfad..06694ba2b7 100755
--- a/src/QABugs/QABugs_11.cxx
+++ b/src/QABugs/QABugs_11.cxx
@@ -2464,13 +2464,13 @@ static Standard_Integer OCC6143 (Draw_Interpretor& di, Standard_Integer argc, co
       di << " 4.0 / 0.0 = " << res << "  Does not Caught... KO"<< "\n";
       Succes = Standard_False;
     }
-#if defined(SOLARIS) || defined(WNT)
-    catch(Standard_DivideByZero)
-#else
-    catch(Standard_NumericError)
-#endif
+    catch(Standard_DivideByZero) // Solaris, Windows w/o SSE2
     {
-      di << " Ok"<< "\n";
+      di << " Ok" << "\n";
+    }
+    catch(Standard_NumericError) // Linux, Windows with SSE2
+    {
+      di << " Ok" << "\n";
     }
     catch(Standard_Failure) {
       //cout << " Caught (" << Standard_Failure::Caught() << ")... KO" << endl;
@@ -2519,13 +2519,13 @@ static Standard_Integer OCC6143 (Draw_Interpretor& di, Standard_Integer argc, co
       di << "-- "<<res<<"="<<r<<"*"<<r<<"   Does not Caught... KO"<< "\n";
       Succes = Standard_False;
     }
-#if defined(SOLARIS) || defined(WNT)
-    catch(Standard_Overflow)
-#else
-    catch(Standard_NumericError)
-#endif
+    catch(Standard_Overflow) // Solaris, Windows w/o SSE2
     {
-      di << " Ok"<< "\n";
+      di << " Ok" << "\n";
+    }
+    catch(Standard_NumericError) // Linux, Windows with SSE2
+    {
+      di << " Ok" << "\n";
     }
     catch(Standard_Failure) {
       //cout << " Caught (" << Standard_Failure::Caught() << ")... KO" << endl;
@@ -2549,13 +2549,13 @@ static Standard_Integer OCC6143 (Draw_Interpretor& di, Standard_Integer argc, co
       //++++ Succes = Standard_False;
       di<<" -- "<<res<<"="<<r<<"*"<<r<<"   Does not Caught... (But) Ok"<<"\n";
     }
-#if defined(SOLARIS) || defined(WNT)
-    catch(Standard_Underflow)
-#else
-    catch(Standard_NumericError)
-#endif
+    catch(Standard_Underflow) // could be on Solaris, Windows w/o SSE2
     {
-      di << " Ok"<< "\n";
+      di << " Ok" << "\n";
+    }
+    catch(Standard_NumericError) // could be on Linux, Windows with SSE2
+    {
+      di << " Ok" << "\n";
     }
     catch(Standard_Failure) {
       //cout << " Caught (" << Standard_Failure::Caught() << ")... KO" << endl;
diff --git a/tests/perf/bspline/intersect b/tests/perf/bspline/intersect
new file mode 100644
index 0000000000..b95a78fee7
--- /dev/null
+++ b/tests/perf/bspline/intersect
@@ -0,0 +1,210 @@
+# Test performance of intersection of several NURBS surfaces
+
+bsplinesurf surf1 \
+3 4 0 4 1 1 2 1 3 4 \
+3 4 0 4 1 1 2 1 3 4 \
+0  0  0 1   2  0  0 1   3  0 15 1   5  0 15 1   7  0  0 1   10  0  0 1 \
+0  2  0 1   1  3  0 1   4  2 15 1   6  3 15 1   8  2  0 1   10  3  0 1 \
+0  4  0 1   3  4  0 1   4  3 15 1   5  3 15 1   7  4  0 1   10  5  0 1 \
+0  6  0 1   3  6  0 1   4  6 15 1   5  6 15 1   8  5  0 1   10  7  0 1 \
+0  8  0 1   2  8  0 1   4  8 15 1   6  8 15 1   7  7  0 1   10  8  0 1 \
+0 10  0 1   2 10  0 1   4 10 15 1   6 10 15 1   7 10  0 1   10 10  0 1
+
+bsplinesurf surf2 \
+3 4 0 4 1 1 2 1 3 4 \
+3 4 0 4 1 1 2 1 3 4 \
+0  0 10  1   2  0  5  1   3  0  4  1   5  0  6  1   7  0 10  1   10  0  5  1 \
+0  2  5  1   1  3  7  1   4  2  7  1   6  3  4  1   8  2  4  4   10  3  7  1 \
+0  4  8  1   3  4 10  1   4  3  6  1   5  3  8  1   7  4  7  4   10  5  5  1 \
+0  6  8  1   3  6 10  1   4  6  6  1   5  6  4  1   8  5  7  4   10  7 10  1 \
+0  8  6  1   2  8  5  1   4  8  8  1   6  8  8  1   7  7  3  4   10  8  5  1 \
+0 10  8  1   2 10 10  1   4 10  6  1   6 10  5  1   7 10  3  1   10 10 10  1
+
+bsplinesurf surf3 \
+2 7 0 3 1 1 2 1 3 1 4 1 5 1 6 3 \
+2 3 0 3 1 1 2 3 \
+-20  20  10  1   20  20  10  1    20 -20  10  1   -20 -20  10  1   -10  10  10  1   10  10  10  1   10 -10  10  1   -10 -10  10  1 \
+-10  10   5  1   15  15   5  1    10 -10   5  1   -15 -15   5  1    -5   5   5  1    5   5   5  1    5  -5   5  1    -5  -5   5  1 \
+-15  15  -5  1   10  10  -5  1    15 -15  -5  1   -10 -10  -5  1    -5   5  -5  1    5   5  -5  1    5  -5  -5  1    -5  -5  -5  1 \
+-20  20 -10  1   20  20 -10  1    20 -20 -10  1   -20 -20 -10  1   -10  10 -10  1   10  10 -10  1   10 -10 -10  1   -10 -10 -10  1
+
+bsplinesurf surf4 \
+4 5 0 5 2 1 4 1 5 1 6 5 \
+4 5 0 5 1 1 4 1 6 1 7 5 \
+ 10  20 -20 1     9  19 -19 1     8  18 -18 1     7  17 -17 1     7  17  17 1     8  18  18 1     9  19  19 1    10  20  20 1 \
+ 10 -20  20 1     9 -19  19 1     8 -18  18 1     7 -17  17 1     7 -17 -17 1     8 -18 -18 1     9 -19 -19 1    10 -20 -20 1 \
+ 10  10 -10 1     9   9  -9 1     8   8  -8 1     7   7  -7 1     7   7   7 1     8   8   8 1     9   9   9 1    10  10  10 1 \
+ 10 -10  10 1     9  -9   9 1     8  -8   8 1     7  -7   7 1     7  -7  -7 1     8  -8  -8 1     9  -9  -9 1    10 -10 -10 1 \
+-10  20 -20 1    -9  19 -19 1    -8  18 -18 1    -7  17 -17 1    -7  17  17 1    -8  18  18 1    -9  19  19 1   -10  20  20 1 \
+-10 -20  20 1    -9 -19  19 1    -8 -18  18 1    -7 -17  17 1    -7 -17 -17 1    -8 -18 -18 1    -9 -19 -19 1   -10 -20 -20 1 \
+-10  10 -10 1    -9   9  -9 1    -8   8  -8 1    -7   7  -7 1    -7   7   7 1    -8   8   8 1    -9   9   9 1   -10  10  10 1 \
+-10 -10  10 1    -9  -9   9 1    -8  -8   8 1    -7  -7   7 1    -7  -7  -7 1    -8  -8  -8 1    -9  -9  -9 1   -10 -10 -10 1
+
+bsplinesurf surf5 \
+1 2 0 2 1 2 \
+5 5 0 6 2 1 3 1 6 1 7 6 \
+0 0 0 1 10 0 5 2 \
+0 10  2  1   10 10  3  1 \
+0 20 10  1   10 20 20  1 \
+0 30  0  1   10 30  0  1 \
+0 40 -1  1   10 40  5  1 \
+0 50  5  1   10 50  5  1 \
+0 60  4  1   10 60  4  1 \
+0 70 -5  1   10 70 -3  1 \
+0 80  7  1   10 80  0  1
+
+
+bsplinesurf surf6 \
+2 3 0 3 1 1 2 3 \
+5 5 0 6 2 1 3 1 6 1 7 6 \
+0 0 0 1 2 0 0 1 5 0 -1 1 10 0 5 2 \
+0 10  2  1   3 10  0  1   8 10  5  1   10 10  3  1 \
+0 20 10  1   4 20  4  1   7 20  4  1   10 20 20  1 \
+0 30  0  1   2 30  0  1   8 30  0  1   10 30  0  1 \
+0 40 -1  1   4 40  5  1   9 40  1  1   10 40  5  1 \
+0 50  5  1   4 50 10  1   6 50 10  1   10 50  5  1 \
+0 60  4  1   3 60 -3  1   7 60 -4  1   10 60  4  1 \
+0 70 -5  1   3 70  0  1   5 70  0  1   10 70 -3  1 \
+0 80  7  1   3 80  1  1   7 80  3  1   10 80  0  1
+
+bsplinesurf surf7 \
+5 5 0 6 1 1 4 1 5 1 8 6 \
+5 5 0 6 2 1 3 1 6 1 7 6 \
+0  0  0  1   2  0  0  1   5  0 -1  1   10  0  5  1   12  0  1  1   15  0 -3  1   16  0 -3  1   19  0 -4 1   24  0  0  1 \
+0 10  2  1   3 10  0  1   8 10  5  1   10 10  3  1   12 10  2  1   15 10  0  1   20 10  5  1   21 10  3 1   24 10  0  1 \
+0 20 10  1   4 20  4  1   7 20  4  1   10 20 20  1   12 20 10  1   16 20  4  1   19 20  4  1   20 20 10 1   24 20  0  1 \
+0 30  0  1   2 30  0  1   8 30  0  1   10 30  0  1   12 30  0  1   14 30  0  1   20 30  0  1   22 30  0 1   24 30  0  1 \
+0 40 -1  1   4 40  5  1   9 40  1  1   10 40  5  1   12 40 -1  1   16 40  5  1   21 40  1  1   22 40  5 1   24 40  0  1 \
+0 50  5  1   4 50 10  1   6 50 10  1   10 50  5  1   12 50  5  1   16 50 10  1   18 50 10  1   20 50  5 1   24 50  0  1 \
+0 60  4  1   3 60 -3  1   7 60 -4  1   10 60  4  1   12 60  4  1   15 60 -3  1   19 60 -4  1   20 60  4 1   24 60  0  1 \
+0 70 -5  1   3 70  0  1   5 70  0  1   10 70 -3  1   12 70 -5  1   15 70  0  1   17 70  0  1   20 70 -3 1   24 70  0  1 \
+0 80  7  1   3 80  1  1   7 80  3  1   10 80  0  1   12 80  7  1   15 80  1  1   19 80  3  1   21 80  0 1   24 80  0  1
+
+bsplinesurf surf8 \
+5 5 0 6 1 1 4 1 5 1 8 6 \
+5 5 0 6 2 1 3 1 6 1 7 6 \
+0  0 -8  1   2  0 -7  1   5  0 -9  1   10  0 -8  1   12  0 -9  1   15  0 -7  1   16  0 -8  1   19  0 -8 1   24  0 -8  1 \
+0 10 -8  1   3 10 -7  1   8 10 -9  1   10 10 -8  1   12 10 -9  1   15 10 -7  1   20 10 -8  1   21 10 -8 1   24 10 -8  1 \
+0 20  8  1   4 20  7  1   7 20  9  1   10 20  8  1   12 20  9  1   16 20  7  1   19 20  8  1   20 20  8 1   24 20  8  1 \
+0 30  8  1   2 30  7  1   8 30  9  1   10 30  8  1   12 30  9  1   14 30  7  1   20 30  8  1   22 30  8 1   24 30  8  1 \
+0 40 -8  1   4 40 -7  1   9 40 -9  1   10 40 -8  1   12 40 -9  1   16 40 -7  1   21 40 -8  1   22 40 -8 1   24 40 -8  1 \
+0 50 -8  1   4 50 -7  1   6 50 -9  1   10 50 -8  1   12 50 -9  1   16 50 -7  1   18 50 -8  1   20 50 -8 1   24 50 -8  1 \
+0 60  8  1   3 60  7  1   7 60  9  1   10 60  8  1   12 60  9  1   15 60  7  1   19 60  8  1   20 60  8 1   24 60  8  1 \
+0 70  8  1   3 70  7  1   5 70  9  1   10 70  8  1   12 70  9  1   15 70  7  1   17 70  8  1   20 70  8 1   24 70  8  1 \
+0 80  8  1   3 80  7  1   7 80  9  1   10 80  8  1   12 80  9  1   15 80  7  1   19 80  8  1   21 80  8 1   24 80  8  1
+
+bsplinesurf rsurf1 \
+3 4 0 4 1 1 2 1 3 4 \
+3 4 0 4 1 1 2 1 3 4 \
+0  0  0 1   2  0  0 1   3  0 15 1   5  0 15 1   7  0  0 1   10  0  0 1 \
+0  2  0 1   1  3  0 2   4  2 15 2   6  3 15 2   8  2  0 2   10  3  0 1 \
+0  4  0 1   3  4  0 2   4  3 15 3   5  3 15 3   7  4  0 2   10  5  0 1 \
+0  6  0 1   3  6  0 2   4  6 15 3   5  6 15 3   8  5  0 2   10  7  0 1 \
+0  8  0 1   2  8  0 2   4  8 15 2   6  8 15 2   7  7  0 2   10  8  0 1 \
+0 10  0 1   2 10  0 1   4 10 15 1   6 10 15 1   7 10  0 1   10 10  0 1
+
+bsplinesurf rsurf2 \
+3 4 0 4 1 1 2 1 3 4 \
+3 4 0 4 1 1 2 1 3 4 \
+0  0 10  1   2  0  5  1   3  0  4  1   5  0  6  1   7  0 10  1   10  0  5  1 \
+0  2  5  1   1  3  7  4   4  2  7  4   6  3  4  4   8  2  4  4   10  3  7  1 \
+0  4  8  1   3  4 10  4   4  3  6  2   5  3  8  2   7  4  7  4   10  5  5  1 \
+0  6  8  1   3  6 10  4   4  6  6  2   5  6  4  2   8  5  7  4   10  7 10  1 \
+0  8  6  1   2  8  5  4   4  8  8  4   6  8  8  4   7  7  3  4   10  8  5  1 \
+0 10  8  1   2 10 10  1   4 10  6  1   6 10  5  1   7 10  3  1   10 10 10  1
+
+bsplinesurf rsurf3 \
+2 7 0 3 1 1 2 1 3 1 4 1 5 1 6 3 \
+2 3 0 3 1 1 2 3 \
+-20  20  10  1   20  20  10  1    20 -20  10  2   -20 -20  10 2   -10  10  10  3   10  10  10  4   10 -10  10  4   -10 -10  10  2 \
+-10  10   5  1   15  15   5  2    10 -10   5  3   -15 -15   5 1    -5   5   5  1    5   5   5  3    5  -5   5  4    -5  -5   5  3 \
+-15  15  -5  3   10  10  -5  1    15 -15  -5  2   -10 -10  -5 2    -5   5  -5  3    5   5  -5  3    5  -5  -5  1    -5  -5  -5  4 \
+-20  20 -10  2   20  20 -10  4    20 -20 -10  3   -20 -20 -10 3   -10  10 -10  2   10  10 -10  2   10 -10 -10  1   -10 -10 -10  1
+
+bsplinesurf rsurf4 \
+4 5 0 5 2 1 4 1 5 1 6 5 \
+4 5 0 5 1 1 4 1 6 1 7 5 \
+ 10  20 -20 1     9  19 -19 1     8  18 -18 2     7  17 -17 2     7  17  17 1     8  18  18 1     9  19  19 4    10  20  20 1 \
+ 10 -20  20 2     9 -19  19 2     8 -18  18 1     7 -17  17 2     7 -17 -17 4     8 -18 -18 3     9 -19 -19 3    10 -20 -20 2 \
+ 10  10 -10 3     9   9  -9 4     8   8  -8 1     7   7  -7 2     7   7   7 4     8   8   8 1     9   9   9 2    10  10  10 3 \
+ 10 -10  10 4     9  -9   9 2     8  -8   8 3     7  -7   7 2     7  -7  -7 1     8  -8  -8 1     9  -9  -9 1    10 -10 -10 4 \
+-10  20 -20 4    -9  19 -19 3    -8  18 -18 3    -7  17 -17 2    -7  17  17 1    -8  18  18 2    -9  19  19 4   -10  20  20 4 \
+-10 -20  20 3    -9 -19  19 2    -8 -18  18 3    -7 -17  17 1    -7 -17 -17 4    -8 -18 -18 2    -9 -19 -19 3   -10 -20 -20 3 \
+-10  10 -10 2    -9   9  -9 1    -8   8  -8 3    -7   7  -7 1    -7   7   7 1    -8   8   8 1    -9   9   9 2   -10  10  10 2 \
+-10 -10  10 1    -9  -9   9 1    -8  -8   8 2    -7  -7   7 1    -7  -7  -7 4    -8  -8  -8 1    -9  -9  -9 1   -10 -10 -10 1
+
+bsplinesurf rsurf5 \
+1 2 0 2 1 2 \
+5 5 0 6 2 1 3 1 6 1 7 6 \
+0 0 0 1 10 0 5 2 \
+0 10  2  3   10 10  3  1 \
+0 20 10  1   10 20 20  4 \
+0 30  0  2   10 30  0  2 \
+0 40 -1  1   10 40  5  2 \
+0 50  5  1   10 50  5  1 \
+0 60  4  3   10 60  4  1 \
+0 70 -5  5   10 70 -3  2 \
+0 80  7  1   10 80  0  1
+
+bsplinesurf rsurf6 \
+2 3 0 3 1 1 2 3 \
+5 5 0 6 2 1 3 1 6 1 7 6 \
+0 0 0 1 2 0 0 1 5 0 -1 1 10 0 5 2 \
+0 10  2  3   3 10  0  1   8 10  5  3   10 10  3  1 \
+0 20 10  1   4 20  4  3   7 20  4  2   10 20 20  4 \
+0 30  0  2   2 30  0  1   8 30  0  1   10 30  0  2 \
+0 40 -1  1   4 40  5  2   9 40  1  3   10 40  5  2 \
+0 50  5  1   4 50 10  5   6 50 10  5   10 50  5  1 \
+0 60  4  3   3 60 -3  1   7 60 -4  1   10 60  4  1 \
+0 70 -5  5   3 70  0  1   5 70  0  1   10 70 -3  2 \
+0 80  7  1   3 80  1  2   7 80  3  1   10 80  0  1
+
+bsplinesurf rsurf7 \
+5 5 0 6 1 1 4 1 5 1 8 6 \
+5 5 0 6 2 1 3 1 6 1 7 6 \
+0  0  0  1   2  0  0  1   5  0 -1  1   10  0  5  2   12  0  1  1   15  0 -3  2   16  0 -3  1   19  0 -4 1   24  0  0  1 \
+0 10  2  3   3 10  0  1   8 10  5  3   10 10  3  1   12 10  2  3   15 10  0  1   20 10  5  3   21 10  3 1   24 10  0  2 \
+0 20 10  1   4 20  4  3   7 20  4  2   10 20 20  4   12 20 10  1   16 20  4  3   19 20  4  2   20 20 10 4   24 20  0  1 \
+0 30  0  2   2 30  0  1   8 30  0  1   10 30  0  2   12 30  0  2   14 30  0  1   20 30  0  1   22 30  0 2   24 30  0  3 \
+0 40 -1  1   4 40  5  2   9 40  1  3   10 40  5  2   12 40 -1  1   16 40  5  2   21 40  1  3   22 40  5 2   24 40  0  1 \
+0 50  5  1   4 50 10  5   6 50 10  5   10 50  5  1   12 50  5  1   16 50 10  5   18 50 10  5   20 50  5 1   24 50  0  2 \
+0 60  4  3   3 60 -3  1   7 60 -4  1   10 60  4  1   12 60  4  3   15 60 -3  1   19 60 -4  1   20 60  4 1   24 60  0  1 \
+0 70 -5  5   3 70  0  1   5 70  0  1   10 70 -3  2   12 70 -5  5   15 70  0  1   17 70  0  1   20 70 -3 2   24 70  0  3 \
+0 80  7  1   3 80  1  2   7 80  3  1   10 80  0  1   12 80  7  1   15 80  1  2   19 80  3  1   21 80  0 1   24 80  0  1
+
+bsplinesurf rsurf8 \
+5 5 0 6 1 1 4 1 5 1 8 6 \
+5 5 0 6 2 1 3 1 6 1 7 6 \
+0  0 -8  1   2  0 -7  1   5  0 -9  1   10  0 -8  2   12  0 -9  1   15  0 -7  2   16  0 -8  1   19  0 -8 1   24  0 -8  1 \
+0 10 -8  3   3 10 -7  1   8 10 -9  3   10 10 -8  1   12 10 -9  3   15 10 -7  1   20 10 -8  3   21 10 -8 1   24 10 -8  2 \
+0 20  8  1   4 20  7  3   7 20  9  2   10 20  8  4   12 20  9  1   16 20  7  3   19 20  8  2   20 20  8 4   24 20  8  1 \
+0 30  8  2   2 30  7  1   8 30  9  1   10 30  8  2   12 30  9  2   14 30  7  1   20 30  8  1   22 30  8 2   24 30  8  3 \
+0 40 -8  1   4 40 -7  2   9 40 -9  3   10 40 -8  2   12 40 -9  1   16 40 -7  2   21 40 -8  3   22 40 -8 2   24 40 -8  1 \
+0 50 -8  1   4 50 -7  5   6 50 -9  5   10 50 -8  1   12 50 -9  1   16 50 -7  5   18 50 -8  5   20 50 -8 1   24 50 -8  2 \
+0 60  8  3   3 60  7  1   7 60  9  1   10 60  8  1   12 60  9  3   15 60  7  1   19 60  8  1   20 60  8 1   24 60  8  1 \
+0 70  8  5   3 70  7  1   5 70  9  1   10 70  8  2   12 70  9  5   15 70  7  1   17 70  8  1   20 70  8 2   24 70  8  3 \
+0 80  8  1   3 80  7  2   7 80  9  1   10 80  8  1   12 80  9  1   15 80  7  2   19 80  8  1   21 80  8 1   24 80  8  1
+
+# intersect all surfaces
+set surfaces [list surf1 surf2 rsurf1 surf3 rsurf2 surf4 rsurf3 surf5 rsurf4 surf6 rsurf5 surf7 rsurf6 surf8 rsurf7 rsurf8]
+#set i 1
+#set shapes {}
+foreach s1 $surfaces {
+#    mkface f_$s1 $s1
+#    lappend shapes f_$s1
+    foreach s2 $surfaces {
+        if { $s1 != $s2 } {
+            intersect r $s1 $s2
+#            if { [regexp {a 3d curve} [whatis r]] } {
+#                mkedge e_$i r
+#                lappend shapes e_$i
+#                incr i
+#            }
+        }
+    }
+}
+
+# call vinit just to prepare for snapshot
+#eval vdisplay $shapes
+vinit
+fit
diff --git a/tests/perf/grids.list b/tests/perf/grids.list
index b6ff3b8ab6..1a558e7d17 100644
--- a/tests/perf/grids.list
+++ b/tests/perf/grids.list
@@ -14,4 +14,4 @@
 014 single_object_selection
 015 single_object_shading
 016 single_object_wireframe
-
+017 bspline