Fix bug in mutable_command_full_dispatch (#2082)

This test did not pass the `-cl-std=` flag when building the program. As
a result, for an OpenCL 3.0 device, the program will be "compiled using
the highest OpenCL C 1.x language version supported" by the device.
However this will force uniform work-group sizes which leads to a
`CL_INVALID_WORK_GROUP_SIZE` error.

To fix this, use the `create_single_kernel_helper()` helper function
which will automatically get the device version and pass that to
`-cl-std=` when building the program.

---------

Signed-off-by: Gorazd Sumkovski <[email protected]>

test_conformance/extensions/cl_khr_command_buffer/cl_khr_command_buffer_mutable_dispatch/mutable_command_full_dispatch.cpp

@@ -100,22 +100,18 @@ struct MutableCommandFullDispatch : InfoMutableCommandBufferTest
 
         if ((available_caps & CL_MUTABLE_DISPATCH_EXEC_INFO_KHR) == 0)
         {
-            error = create_single_kernel_helper_create_program(
-                context, &program, 1, &kernel_str_no_svm);
+            error = create_single_kernel_helper(context, &program, &kernel, 1,
+                                                &kernel_str_no_svm,
+                                                "full_dispatch");
         }
         else
         {
-            error = create_single_kernel_helper_create_program(
-                context, &program, 1, &kernel_str_svm);
+            error =
+                create_single_kernel_helper(context, &program, &kernel, 1,
+                                            &kernel_str_svm, "full_dispatch");
         }
         test_error(error, "Failed to create program with source");
 
-        error = clBuildProgram(program, 1, &device, nullptr, nullptr, nullptr);
-        test_error(error, "Failed to build program");
-
-        kernel = clCreateKernel(program, "full_dispatch", &error);
-        test_error(error, "Failed to create copy kernel");
-
         return CL_SUCCESS;
     }
 
@@ -303,6 +299,11 @@ struct MutableCommandFullDispatch : InfoMutableCommandBufferTest
         };
 
         size_t work_offset = 0;
+        /* Round the global work size up to nearest multiple of the local work
+         * size to ensure work group uniformity. */
+        num_elements =
+            ((num_elements + group_size - 1) / group_size) * group_size;
+
         cl_int error = clCommandNDRangeKernelKHR(
             command_buffer, nullptr, props, kernel, 1, &work_offset,
             &num_elements, &group_size, 0, nullptr, nullptr, &command);
@@ -384,18 +385,23 @@ struct MutableCommandFullDispatch : InfoMutableCommandBufferTest
             dispatch_config.global_work_offset = &work_offset;
         }
 
-        if ((available_caps & CL_MUTABLE_DISPATCH_GLOBAL_SIZE_KHR) != 0)
-        {
-            num_elements /= 2;
-            dispatch_config.global_work_size = &num_elements;
-        }
-
         if ((available_caps & CL_MUTABLE_DISPATCH_LOCAL_SIZE_KHR) != 0)
         {
             group_size /= 2;
             dispatch_config.local_work_size = &group_size;
         }
 
+        if ((available_caps & CL_MUTABLE_DISPATCH_GLOBAL_SIZE_KHR) != 0)
+        {
+            num_elements /= 2;
+            /* Round the global work size up to nearest multiple of the local
+             * work size to ensure work group uniformity. */
+            num_elements =
+                ((num_elements + group_size - 1) / group_size) * group_size;
+
+            dispatch_config.global_work_size = &num_elements;
+        }
+
         cl_uint num_configs = 1;
         cl_command_buffer_update_type_khr config_types[1] = {
             CL_STRUCTURE_TYPE_MUTABLE_DISPATCH_CONFIG_KHR