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@ -10,7 +10,6 @@ |
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#include "blur.h" |
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#include <xmmintrin.h> |
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#define ALIGN16 __attribute__((aligned(16))) |
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// number of xmm registers needed to store input pixels for given kernel size
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#define REGISTERS_CNT (KERNEL_SIZE + 4/2) / 4 |
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@ -22,7 +21,7 @@ void blur_impl_horizontal_pass_sse2(uint32_t *src, uint32_t *dst, int width, int |
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// handle borders
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int leftBorder = column < HALF_KERNEL; |
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int rightBorder = column > width - HALF_KERNEL; |
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uint32_t _rgbaIn[KERNEL_SIZE] ALIGN16; |
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uint32_t _rgbaIn[KERNEL_SIZE] __attribute__((aligned(16))); |
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int i = 0; |
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if (leftBorder) { |
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// for kernel size 7x7 and column == 0, we have:
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@ -65,7 +64,7 @@ void blur_impl_horizontal_pass_sse2(uint32_t *src, uint32_t *dst, int width, int |
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// multiplication is significantly faster than division
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acc = _mm_cvtps_epi32(_mm_mul_ps(_mm_cvtepi32_ps(acc), |
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_mm_set1_ps(1/((float)KERNEL_SIZE)))); |
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_mm_set1_ps(1.0/KERNEL_SIZE))); |
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*(dst + height * column + row) = |
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_mm_cvtsi128_si32(_mm_packus_epi16(_mm_packs_epi32(acc, zero), zero)); |
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