ocl: Enable backward binary portability for setTo function.

modules/ocl/src/matrix_operations.cpp

@@ -593,11 +593,16 @@ static void set_to_withoutmask_run(const oclMat &dst, const Scalar &scalar, stri
         CV_Error(CV_StsUnsupportedFormat, "unknown depth");
     }
 #ifdef CL_VERSION_1_2
-    if(dst.offset == 0 && dst.cols == dst.wholecols)
+    //this enables backwards portability to
+    //run on OpenCL 1.1 platform if library binaries are compiled with OpenCL 1.2 support
+    if(Context::getContext()->supportsFeature(Context::CL_VER_1_2) &&
+        dst.offset == 0 && dst.cols == dst.wholecols)
     {
-        clEnqueueFillBuffer((cl_command_queue)dst.clCxt->oclCommandQueue(), (cl_mem)dst.data, args[0].second, args[0].first, 0, dst.step * dst.rows, 0, NULL, NULL);
+        clEnqueueFillBuffer((cl_command_queue)dst.clCxt->oclCommandQueue(), 
+            (cl_mem)dst.data, args[0].second, args[0].first, 0, dst.step * dst.rows, 0, NULL, NULL);
     }
     else
+#endif
     {
         args.push_back( make_pair( sizeof(cl_mem) , (void *)&dst.data ));
         args.push_back( make_pair( sizeof(cl_int) , (void *)&dst.cols ));
@@ -605,17 +610,8 @@ static void set_to_withoutmask_run(const oclMat &dst, const Scalar &scalar, stri
         args.push_back( make_pair( sizeof(cl_int) , (void *)&step_in_pixel ));
         args.push_back( make_pair( sizeof(cl_int) , (void *)&offset_in_pixel));
         openCLExecuteKernel(dst.clCxt , &operator_setTo, kernelName, globalThreads,
-                            localThreads, args, -1, -1, compile_option);
+            localThreads, args, -1, -1, compile_option);
     }
-#else
-    args.push_back( make_pair( sizeof(cl_mem) , (void *)&dst.data ));
-    args.push_back( make_pair( sizeof(cl_int) , (void *)&dst.cols ));
-    args.push_back( make_pair( sizeof(cl_int) , (void *)&dst.rows ));
-    args.push_back( make_pair( sizeof(cl_int) , (void *)&step_in_pixel ));
-    args.push_back( make_pair( sizeof(cl_int) , (void *)&offset_in_pixel));
-    openCLExecuteKernel(dst.clCxt , &operator_setTo, kernelName, globalThreads,
-                        localThreads, args, -1, -1, compile_option);
-#endif
 }
 
 static void set_to_withmask_run(const oclMat &dst, const Scalar &scalar, const oclMat &mask, string kernelName)

modules/ocl/src/mcwutil.cpp

@@ -45,10 +45,6 @@
 
 #include "precomp.hpp"
 
-#ifndef CL_VERSION_1_2
-#define CL_VERSION_1_2 0
-#endif
-
 using namespace std;
 
 namespace cv
@@ -162,9 +158,11 @@ namespace cv
                 CV_Error(-1, "Image forma is not supported");
                 break;
             }
+#ifdef CL_VERSION_1_2
+            //this enables backwards portability to
+            //run on OpenCL 1.1 platform if library binaries are compiled with OpenCL 1.2 support
             if(Context::getContext()->supportsFeature(Context::CL_VER_1_2))
             {
-#if CL_VERSION_1_2
                 cl_image_desc desc;
                 desc.image_type       = CL_MEM_OBJECT_IMAGE2D;
                 desc.image_width      = mat.cols;
@@ -177,11 +175,9 @@ namespace cv
                 desc.num_mip_levels   = 0;
                 desc.num_samples      = 0;
                 texture = clCreateImage((cl_context)mat.clCxt->oclContext(), CL_MEM_READ_WRITE, &format, &desc, NULL, &err);            
-#else
-                CV_Error(CV_StsBadFunc, "Non-deprecated image creation API call is not supported."); 
-#endif
             }
             else
+#endif
             {
                 texture = clCreateImage2D(
                     (cl_context)mat.clCxt->oclContext(),