some more potential fixes (even though manually patching dims is a bad style, need to fix to properly).

Author: vpisarev

modules/gapi/src/api/gbackend.cpp

@@ -411,7 +411,7 @@ void createMat(const cv::GMatDesc &desc, cv::Mat& mat)
 #if !defined(GAPI_STANDALONE)
         // NB: WA for 1D mats.
         if (desc.dims.size() == 1u) {
-            mat.dims = 1;
+            mat.size.dims = mat.dims = 1;
         }
 #endif
     }

modules/gapi/test/gapi_sample_pipelines.cpp

@@ -512,7 +512,7 @@ TEST(DISABLED_GAPI_Pipeline, 1DMatBetweenIslands)
     cv::Mat out_mat;
 
     cv::Mat ref_mat({dim}, CV_8U);
-    ref_mat.dims = 1;
+    ref_mat.size.dims = ref_mat.dims = 1;
     ref_mat.setTo(0);
 
     cv::GMat in;
@@ -534,7 +534,7 @@ TEST(DISABLED_GAPI_Pipeline, 1DMatWithinSingleIsland)
     cv::Mat out_mat;
 
     cv::Mat ref_mat({dim}, CV_8U);
-    ref_mat.dims = 1;
+    ref_mat.size.dims = ref_mat.dims = 1;
     ref_mat.setTo(0);
 
     cv::GMat in;

modules/gapi/test/rmat/rmat_view_tests.cpp

@@ -76,7 +76,7 @@ TEST_P(RMatViewNDTest, DefaultStep) {
     std::tie(depth, ndims) = GetParam();
     std::vector<int> dims(ndims, 12);
     GMatDesc desc;
-    desc.dims = dims;
+    desc.size.dims = desc.dims = dims;
     desc.depth = depth;
     GAPI_Assert(desc.chan == -1);
     auto elemSize = CV_ELEM_SIZE(depth);
@@ -113,7 +113,7 @@ TEST_P(RMatViewNDTest, StepFromView) {
     std::vector<int> dims(ndims, 12);
     std::vector<int> aligned(ndims, 16);
     GMatDesc desc;
-    desc.dims = dims;
+    desc.size.dims = desc.dims = dims;
     desc.depth = depth;
     GAPI_Assert(desc.chan == -1);
     auto elemSize = CV_ELEM_SIZE(depth);
@@ -145,7 +145,7 @@ TEST_P(RMatViewNDTestNegative, DefaultStep) {
     std::tie(depth, chan, ndims) = GetParam();
     std::vector<int> dims(ndims, 12);
     GMatDesc desc;
-    desc.dims = dims;
+    desc.size.dims = desc.dims = dims;
     desc.depth = depth;
     desc.chan = chan;
     auto elemSize = CV_ELEM_SIZE(depth);