TAPI: remap 3-channel

modules/imgproc/perf/opencl/perf_imgwarp.cpp

@@ -172,7 +172,7 @@ typedef tuple<Size, MatType, InterType> RemapParams;
 typedef TestBaseWithParam<RemapParams> RemapFixture;
 
 OCL_PERF_TEST_P(RemapFixture, Remap,
-            ::testing::Combine(OCL_TEST_SIZES, OCL_TEST_TYPES, InterType::all()))
+            ::testing::Combine(OCL_TEST_SIZES, OCL_TEST_TYPES_134, InterType::all()))
 {
     const RemapParams params = GetParam();
     const Size srcSize = get<0>(params);

modules/imgproc/src/imgwarp.cpp

@@ -3503,7 +3503,7 @@ static bool ocl_remap(InputArray _src, OutputArray _dst, InputArray _map1, Input
 {
     int cn = _src.channels(), type = _src.type(), depth = _src.depth();
 
-    if (borderType == BORDER_TRANSPARENT || cn == 3 || !(interpolation == INTER_LINEAR || interpolation == INTER_NEAREST)
+    if (borderType == BORDER_TRANSPARENT || !(interpolation == INTER_LINEAR || interpolation == INTER_NEAREST)
             || _map1.type() == CV_16SC1 || _map2.type() == CV_16SC1)
         return false;
 
@@ -3553,10 +3553,16 @@ static bool ocl_remap(InputArray _src, OutputArray _dst, InputArray _map1, Input
                                ocl::convertTypeStr(CV_32S, wdepth, 2, cvt[2]),
                                ocl::typeToStr(CV_MAKE_TYPE(wdepth, 2)));
     }
+    int scalarcn = cn == 3 ? 4 : cn;
+    int sctype = CV_MAKETYPE(depth, scalarcn);
+    buildOptions += format(" -D T=%s -D T1=%s"
+                           " -D cn=%d -D ST=%s",
+                           ocl::typeToStr(type), ocl::typeToStr(depth),
+                           cn, ocl::typeToStr(sctype));
 
     ocl::Kernel k(kernelName.c_str(), ocl::imgproc::remap_oclsrc, buildOptions);
 
-    Mat scalar(1, 1, type, borderValue);
+    Mat scalar(1, 1, sctype, borderValue);
     ocl::KernelArg srcarg = ocl::KernelArg::ReadOnly(src), dstarg = ocl::KernelArg::WriteOnly(dst),
             map1arg = ocl::KernelArg::ReadOnlyNoSize(map1),
             scalararg = ocl::KernelArg::Constant((void*)scalar.data, scalar.elemSize());

modules/imgproc/test/ocl/test_warp.cpp

@@ -342,7 +342,7 @@ OCL_INSTANTIATE_TEST_CASE_P(ImgprocWarpResizeArea, Resize, Combine(
 
 OCL_INSTANTIATE_TEST_CASE_P(ImgprocWarp, Remap_INTER_LINEAR, Combine(
                             Values(CV_8U, CV_16U, CV_32F),
-                            Values(1, 4),
+                            Values(1, 3, 4),
                             Values(std::pair<MatType, MatType>((MatType)CV_32FC1, (MatType)CV_32FC1),
                                    std::pair<MatType, MatType>((MatType)CV_16SC2, (MatType)CV_16UC1),
                                    std::pair<MatType, MatType>((MatType)CV_32FC2, noType)),
@@ -355,7 +355,7 @@ OCL_INSTANTIATE_TEST_CASE_P(ImgprocWarp, Remap_INTER_LINEAR, Combine(
 
 OCL_INSTANTIATE_TEST_CASE_P(ImgprocWarp, Remap_INTER_NEAREST, Combine(
                             Values(CV_8U, CV_16U, CV_32F),
-                            Values(1, 4),
+                            Values(1, 3, 4),
                             Values(std::pair<MatType, MatType>((MatType)CV_32FC1, (MatType)CV_32FC1),
                                    std::pair<MatType, MatType>((MatType)CV_32FC2, noType),
                                    std::pair<MatType, MatType>((MatType)CV_16SC2, (MatType)CV_16UC1),