Fix SymmColumnSmallVec_32s16s SSE code

Specifically, in general antisymmetric case src[-1] (S0) should be subtracted from from src[1] (S2), and not the opposite.

Fix SymmColumnSmallVec_32s16s SSE code
Specifically, in general antisymmetric case src[-1] (S0) should be subtracted from from src[1] (S2), and not the opposite.
c762da98 · orestis · 0a4c616d · c762da98
Commit c762da98 authored Dec 06, 2014 by orestis
Hide whitespace changes
Inline Side-by-side

Showing with 4 additions and 4 deletions

filter.cpp modules/imgproc/src/filter.cpp +4 -4

No files found.
--- a/modules/imgproc/src/filter.cpp
+++ b/modules/imgproc/src/filter.cpp
@@ -1182,10 +1182,10 @@ struct SymmColumnSmallVec_32s16s
                {
                    __m128 s0 = df4, s1 = df4;
                    __m128i x0, x1;
-                    x0 = _mm_sub_epi32(_mm_load_si128((__m128i*)(S0 + i)),
+                    x0 = _mm_sub_epi32(_mm_load_si128((__m128i*)(S2 + i)),
-                                       _mm_load_si128((__m128i*)(S2 + i)));
+                                       _mm_load_si128((__m128i*)(S0 + i)));
-                    x1 = _mm_sub_epi32(_mm_load_si128((__m128i*)(S0 + i + 4)),
+                    x1 = _mm_sub_epi32(_mm_load_si128((__m128i*)(S2 + i + 4)),
-                                       _mm_load_si128((__m128i*)(S2 + i + 4)));
+                                       _mm_load_si128((__m128i*)(S0 + i + 4)));
                    s0 = _mm_add_ps(s0, _mm_mul_ps(_mm_cvtepi32_ps(x0),k1));
                    s1 = _mm_add_ps(s1, _mm_mul_ps(_mm_cvtepi32_ps(x1),k1));
                    x0 = _mm_packs_epi32(_mm_cvtps_epi32(s0), _mm_cvtps_epi32(s1));