added support of old CC into GPU mean shift routines

modules/gpu/src/cuda/imgproc.cu

@@ -251,9 +251,11 @@ namespace cv { namespace gpu { namespace imgproc
     }
 
     extern "C" void meanShiftFiltering_gpu(const DevMem2D& src, DevMem2D dst, int sp, int sr, int maxIter, float eps)
-    {                        
+    {
+        printFuncAttrib(meanshift_kernel);
+
         dim3 grid(1, 1, 1);
-        dim3 threads(32, 16, 1);
+        dim3 threads(32, 8, 1);
         grid.x = divUp(src.cols, threads.x);
         grid.y = divUp(src.rows, threads.y);
 
@@ -269,7 +271,7 @@ namespace cv { namespace gpu { namespace imgproc
     extern "C" void meanShiftProc_gpu(const DevMem2D& src, DevMem2D dstr, DevMem2D dstsp, int sp, int sr, int maxIter, float eps) 
     {
         dim3 grid(1, 1, 1);
-        dim3 threads(32, 16, 1);
+        dim3 threads(32, 8, 1);
         grid.x = divUp(src.cols, threads.x);
         grid.y = divUp(src.rows, threads.y);
 

modules/gpu/src/imgproc_gpu.cpp

@@ -129,8 +129,6 @@ void cv::gpu::remap(const GpuMat& src, GpuMat& dst, const GpuMat& xmap, const Gp
 
 void cv::gpu::meanShiftFiltering(const GpuMat& src, GpuMat& dst, int sp, int sr, TermCriteria criteria)
 {
-    CV_Assert(TargetArchs::builtWith(FEATURE_SET_COMPUTE_12) && DeviceInfo().supports(FEATURE_SET_COMPUTE_12));
-
     if( src.empty() )
         CV_Error( CV_StsBadArg, "The input image is empty" );
 
@@ -157,8 +155,6 @@ void cv::gpu::meanShiftFiltering(const GpuMat& src, GpuMat& dst, int sp, int sr,
 
 void cv::gpu::meanShiftProc(const GpuMat& src, GpuMat& dstr, GpuMat& dstsp, int sp, int sr, TermCriteria criteria)
 {
-    CV_Assert(TargetArchs::builtWith(FEATURE_SET_COMPUTE_12) && DeviceInfo().supports(FEATURE_SET_COMPUTE_12));
-
     if( src.empty() )
         CV_Error( CV_StsBadArg, "The input image is empty" );
 

modules/gpu/src/mssegmentation.cpp

@@ -227,8 +227,6 @@ inline int dist2(const cv::Vec2s& lhs, const cv::Vec2s& rhs)
 
 void cv::gpu::meanShiftSegmentation(const GpuMat& src, Mat& dst, int sp, int sr, int minsize, TermCriteria criteria)
 {
-    CV_Assert(TargetArchs::builtWith(FEATURE_SET_COMPUTE_12) && DeviceInfo().supports(FEATURE_SET_COMPUTE_12));
-
     CV_Assert(src.type() == CV_8UC4);
     const int nrows = src.rows;
     const int ncols = src.cols;

modules/gpu/test/test_imgproc.cpp

@@ -1478,7 +1478,7 @@ TEST_P(MeanShift, Proc)
     EXPECT_MAT_NEAR(spmap_template, spmap, 0.0);
 }
 
-INSTANTIATE_TEST_CASE_P(ImgProc, MeanShift, testing::ValuesIn(devices(cv::gpu::FEATURE_SET_COMPUTE_12)));
+INSTANTIATE_TEST_CASE_P(ImgProc, MeanShift, testing::ValuesIn(devices()));
 
 struct MeanShiftSegmentation : testing::TestWithParam< std::tr1::tuple<cv::gpu::DeviceInfo, int> >
 {
@@ -1540,7 +1540,7 @@ TEST_P(MeanShiftSegmentation, Regression)
 }
 
 INSTANTIATE_TEST_CASE_P(ImgProc, MeanShiftSegmentation, testing::Combine(
-                        testing::ValuesIn(devices(cv::gpu::FEATURE_SET_COMPUTE_12)), 
+                        testing::ValuesIn(devices()),
                         testing::Values(0, 4, 20, 84, 340, 1364)));
 
 ////////////////////////////////////////////////////////////////////////////////