fix meanShift mismatch on none-double GPUs

modules/ocl/src/kernels/meanShift.cl

@@ -12,11 +12,13 @@
 //
 // Copyright (C) 2010-2012, Institute Of Software Chinese Academy Of Science, all rights reserved.
 // Copyright (C) 2010-2012, Advanced Micro Devices, Inc., all rights reserved.
+// Copyright (C) 2010-2012, Multicoreware, Inc., all rights reserved.
 // Third party copyrights are property of their respective owners.
 //
 // @Authors
 //    Shengen Yan,yanshengen@gmail.com
 //    Xu Pang, pangxu010@163.com
+//    Wenju He, wenju@multicorewareinc.com
 //
 // Redistribution and use in source and binary forms, with or without modification,
 // are permitted provided that the following conditions are met:
@@ -43,12 +45,6 @@
 // the use of this software, even if advised of the possibility of such damage.
 //
 //M*/
-#if defined (DOUBLE_SUPPORT)
-#pragma OPENCL EXTENSION cl_khr_fp64:enable
-typedef double F;
-#else
-typedef float F;
-#endif
 
 short2 do_mean_shift(int x0, int y0, __global uchar4* out,int out_step,
                __global uchar4* in, int in_step, int dst_off, int src_off,
@@ -184,12 +180,11 @@ short2 do_mean_shift(int x0, int y0, __global uchar4* out,int out_step,
         if( count == 0 )
             break;
 
-        F  icount = 1.0/count;
-        int x1 = convert_int_rtz(sx*icount);
-        int y1 = convert_int_rtz(sy*icount);
-        s.x = convert_int_rtz(s.x*icount);
-        s.y = convert_int_rtz(s.y*icount);
-        s.z = convert_int_rtz(s.z*icount);
+        int x1 = sx/count;
+        int y1 = sy/count;
+        s.x = s.x/count;
+        s.y = s.y/count;
+        s.z = s.z/count;
 
         int4 tmp = s - convert_int4(c);
         int norm2 = tmp.x * tmp.x + tmp.y *  tmp.y +

modules/ocl/test/test_imgproc.cpp

@@ -183,12 +183,11 @@ COOR do_meanShift(int x0, int y0, uchar *sptr, uchar *dptr, int sstep, cv::Size
         if( count == 0 )
             break;
 
-        double icount = 1.0 / count;
-        int x1 = cvFloor(sx * icount);
-        int y1 = cvFloor(sy * icount);
-        s0 = cvFloor(s0 * icount);
-        s1 = cvFloor(s1 * icount);
-        s2 = cvFloor(s2 * icount);
+        int x1 = sx / count;
+        int y1 = sy / count;
+        s0 = s0 / count;
+        s1 = s1 / count;
+        s2 = s2 / count;
 
         bool stopFlag = (x0 == x1 && y0 == y1) || (abs(x1 - x0) + abs(y1 - y0) +
                         tab[s0 - c0 + 255] + tab[s1 - c1 + 255] + tab[s2 - c2 + 255] <= eps);
@@ -1370,9 +1369,7 @@ TEST_P(meanShiftFiltering, Mat)
         gdst.download(cpu_gdst);
 
         char sss[1024];
-        char warning[300] = "Warning: If the selected device doesn't support double, a deviation will exist.\nIf the accuracy is acceptable, please ignore it.\n";
         sprintf(sss, "roicols=%d,roirows=%d,srcx=%d,srcy=%d,dstx=%d,dsty=%d\n", roicols, roirows, srcx, srcy, dstx, dsty);
-        strcat(sss, warning);
         EXPECT_MAT_NEAR(dst, cpu_gdst, 0.0, sss);
 
     }
@@ -1398,9 +1395,7 @@ TEST_P(meanShiftProc, Mat)
         gdstCoor.download(cpu_gdstCoor);
 
         char sss[1024];
-        char warning[300] = "Warning: If the selected device doesn't support double, a deviation will exist.\nIf the accuracy is acceptable, please ignore it.\n";
         sprintf(sss, "roicols=%d,roirows=%d,srcx=%d,srcy=%d,dstx=%d,dsty=%d\n", roicols, roirows, srcx, srcy, dstx, dsty);
-        strcat(sss, warning);
         EXPECT_MAT_NEAR(dst, cpu_gdst, 0.0, sss);
         EXPECT_MAT_NEAR(dstCoor, cpu_gdstCoor, 0.0, sss);
     }