2d8c89c40b
When accessing global memory by DWORD4, memory bandwidth can be fully utilized on Intel platform. This patch will make more image format(e.g. 8UC4) be processed in DWORD4 by work-item. After applying this patch, 3 subcase of ./opencv_perf_core --gtest_filter=OCL_RepeatFixture_Repeat.Repeat/* can be speedup on HD4000 graphics card with Beignet: OCL_RepeatFixture_Repeat.Repeat/2, 64% improvement. OCL_RepeatFixture_Repeat.Repeat/6, 50% improvement. OCL_RepeatFixture_Repeat.Repeat/8, 56% improvement. Signed-off-by: Chuanbo Weng <chuanbo.weng@intel.com>
OpenCV: Open Source Computer Vision Library
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