Add OpenCL version 1.2 query into ocl::Context::supportsFeature().

Add backwards portability for OpenCL 1.1 when OpenCV executables
are compiled with OpenCL 1.2 profile support.

modules/ocl/include/opencv2/ocl/ocl.hpp

@@ -155,7 +155,7 @@ namespace cv
             static Context* getContext();
             static void setContext(Info &oclinfo);
 
-            enum {CL_DOUBLE, CL_UNIFIED_MEM};
+            enum {CL_DOUBLE, CL_UNIFIED_MEM, CL_VER_1_2};
             bool supportsFeature(int ftype);
             size_t computeUnits();
             void* oclContext();

modules/ocl/src/initialization.cpp

@@ -130,6 +130,7 @@ namespace cv
             cl_platform_id oclplatform;
             std::vector<cl_device_id> devices;
             std::vector<std::string> devName;
+            std::string clVersion;
 
             cl_context oclcontext;
             cl_command_queue clCmdQueue;
@@ -304,6 +305,7 @@ namespace cv
 
             char deviceName[256];
             int devcienums = 0;
+            char clVersion[256];
             for (unsigned i = 0; i < numPlatforms; ++i)
             {
                 cl_uint numsdev;
@@ -319,6 +321,8 @@ namespace cv
 
                     Info ocltmpinfo;
                     ocltmpinfo.impl->oclplatform = platforms[i];
+                    openCLSafeCall(clGetPlatformInfo(platforms[i], CL_PLATFORM_VERSION, sizeof(clVersion), clVersion, NULL));
+                    ocltmpinfo.impl->clVersion = clVersion;
                     for(unsigned j = 0; j < numsdev; ++j)
                     {
                         ocltmpinfo.impl->devices.push_back(devices[j]);
@@ -997,6 +1001,8 @@ namespace cv
                 return impl->double_support == 1;
             case CL_UNIFIED_MEM:
                 return impl->unified_memory == 1;
+            case CL_VER_1_2:
+                return impl->clVersion.find("OpenCL 1.2") != string::npos;
             default:
                 return false;
             }

modules/ocl/src/mcwutil.cpp

@@ -124,7 +124,7 @@ namespace cv
                                   build_options, finish_mode);
         }
 
-       cl_mem bindTexture(const oclMat &mat)
+        cl_mem bindTexture(const oclMat &mat)
         {
             cl_mem texture;
             cl_image_format format;
@@ -162,30 +162,37 @@ namespace cv
                 CV_Error(-1, "Image forma is not supported");
                 break;
             }
+            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;
-            desc.image_height     = mat.rows;
-            desc.image_depth      = 0;
-            desc.image_array_size = 1;
-            desc.image_row_pitch  = 0;
-            desc.image_slice_pitch = 0;
-            desc.buffer           = NULL;
-            desc.num_mip_levels   = 0;
-            desc.num_samples      = 0;
-            texture = clCreateImage((cl_context)mat.clCxt->oclContext(), CL_MEM_READ_WRITE, &format, &desc, NULL, &err);
+                cl_image_desc desc;
+                desc.image_type       = CL_MEM_OBJECT_IMAGE2D;
+                desc.image_width      = mat.cols;
+                desc.image_height     = mat.rows;
+                desc.image_depth      = 0;
+                desc.image_array_size = 1;
+                desc.image_row_pitch  = 0;
+                desc.image_slice_pitch = 0;
+                desc.buffer           = NULL;
+                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
-            texture = clCreateImage2D(
-                (cl_context)mat.clCxt->oclContext(),
-                CL_MEM_READ_WRITE,
-                &format,
-                mat.cols,
-                mat.rows,
-                0,
-                NULL,
-                &err);
+                CV_Error(CV_StsBadFunc, "Non-deprecated image creation API call is not supported."); 
 #endif
+            }
+            else
+            {
+                texture = clCreateImage2D(
+                    (cl_context)mat.clCxt->oclContext(),
+                    CL_MEM_READ_WRITE,
+                    &format,
+                    mat.cols,
+                    mat.rows,
+                    0,
+                    NULL,
+                    &err);
+            }
             size_t origin[] = { 0, 0, 0 };
             size_t region[] = { mat.cols, mat.rows, 1 };
 
@@ -198,7 +205,7 @@ namespace cv
                 clEnqueueCopyBufferRect((cl_command_queue)mat.clCxt->oclCommandQueue(), (cl_mem)mat.data, devData, origin, origin,
                     regin, mat.step, 0, mat.cols * mat.elemSize(), 0, 0, NULL, NULL);
                 clFlush((cl_command_queue)mat.clCxt->oclCommandQueue()); 
-           }
+            }
             else
             {
                 devData = (cl_mem)mat.data;
@@ -214,7 +221,6 @@ namespace cv
             openCLSafeCall(err);
             return texture;
         }
-
         void releaseTexture(cl_mem& texture)
         {
             openCLFree(texture);