optimize blend using universal intrinsic

 - add more channels/depth performance test for blend

modules/core/include/opencv2/core/hal/intrin_sse.hpp

@@ -1368,6 +1368,24 @@ OPENCV_HAL_IMPL_SSE_TRANSPOSE4x4(v_int32x4, epi32, OPENCV_HAL_NOP, OPENCV_HAL_NO
 OPENCV_HAL_IMPL_SSE_TRANSPOSE4x4(v_float32x4, ps, _mm_castps_si128, _mm_castsi128_ps)
 
 // adopted from sse_utils.hpp
+inline void v_load_deinterleave(const uchar* ptr, v_uint8x16& a, v_uint8x16& b)
+{
+    __m128i t00 = _mm_loadu_si128((const __m128i*)ptr);
+    __m128i t01 = _mm_loadu_si128((const __m128i*)(ptr + 16));
+
+    __m128i t10 = _mm_unpacklo_epi8(t00, t01);
+    __m128i t11 = _mm_unpackhi_epi8(t00, t01);
+
+    __m128i t20 = _mm_unpacklo_epi8(t10, t11);
+    __m128i t21 = _mm_unpackhi_epi8(t10, t11);
+
+    __m128i t30 = _mm_unpacklo_epi8(t20, t21);
+    __m128i t31 = _mm_unpackhi_epi8(t20, t21);
+
+    a.val = _mm_unpacklo_epi8(t30, t31);
+    b.val = _mm_unpackhi_epi8(t30, t31);
+}
+
 inline void v_load_deinterleave(const uchar* ptr, v_uint8x16& a, v_uint8x16& b, v_uint8x16& c)
 {
     __m128i t00 = _mm_loadu_si128((const __m128i*)ptr);
@@ -1507,6 +1525,15 @@ inline void v_store_interleave( short* ptr, const v_int16x8& a, const v_int16x8&
     _mm_storeu_si128((__m128i*)(ptr + 8), t1);
 }
 
+inline void v_store_interleave( uchar* ptr, const v_uint8x16& a, const v_uint8x16& b)
+{
+    __m128i v0 = _mm_unpacklo_epi8(a.val, b.val);
+    __m128i v1 = _mm_unpackhi_epi8(a.val, b.val);
+
+    _mm_storeu_si128((__m128i*)(ptr), v0);
+    _mm_storeu_si128((__m128i*)(ptr + 16), v1);
+}
+
 inline void v_store_interleave( uchar* ptr, const v_uint8x16& a, const v_uint8x16& b,
                                 const v_uint8x16& c )
 {

modules/imgproc/perf/opencl/perf_blend.cpp

@@ -56,7 +56,7 @@ namespace ocl {
 
 typedef Size_MatType BlendLinearFixture;
 
-OCL_PERF_TEST_P(BlendLinearFixture, BlendLinear, ::testing::Combine(OCL_TEST_SIZES, OCL_PERF_ENUM(CV_32FC1, CV_32FC4)))
+OCL_PERF_TEST_P(BlendLinearFixture, BlendLinear, ::testing::Combine(OCL_TEST_SIZES, OCL_PERF_ENUM(CV_32FC1, CV_32FC3, CV_32FC4, CV_8UC1, CV_8UC3, CV_8UC4)))
 {
     Size_MatType_t params = GetParam();
     const Size srcSize = get<0>(params);