Slightly refactor border handling code.
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parent
f06dc6cbc4
commit
252999f640
74
blur_simd.c
74
blur_simd.c
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@ -63,24 +63,25 @@ void blur_impl_horizontal_pass_sse2(uint32_t *src, uint32_t *dst, float *kernel,
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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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if (leftBorder || rightBorder) {
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uint32_t _rgbaIn[KERNEL_SIZE] ALIGN16;
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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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// x x x P0 P1 P2 P3
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// first loop mirrors P{0..3} to fill x's,
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// second one loads P{0..3}
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for (; i < HALF_KERNEL - column; i++)
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_rgbaIn[i] = *(src + (HALF_KERNEL - i));
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for (; i < KERNEL_SIZE; i++)
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_rgbaIn[i] = *(src - (HALF_KERNEL - i));
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} else {
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for (; i < width - column; i++)
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_rgbaIn[i] = *(src + i);
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for (int k = 0; i < KERNEL_SIZE; i++, k++)
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_rgbaIn[i] = *(src - k);
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}
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uint32_t _rgbaIn[KERNEL_SIZE] ALIGN16;
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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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// x x x P0 P1 P2 P3
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// first loop mirrors P{0..3} to fill x's,
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// second one loads P{0..3}
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for (; i < HALF_KERNEL - column; i++)
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_rgbaIn[i] = *(src + (HALF_KERNEL - i));
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for (; i < KERNEL_SIZE; i++)
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_rgbaIn[i] = *(src - (HALF_KERNEL - i));
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for (int k = 0; k < REGISTERS_CNT; k++)
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rgbaIn[k] = _mm_load_si128((__m128i*)(_rgbaIn + 4*k));
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} else if (rightBorder) {
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for (; i < width - column; i++)
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_rgbaIn[i] = *(src + i);
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for (int k = 0; i < KERNEL_SIZE; i++, k++)
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_rgbaIn[i] = *(src - k);
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for (int k = 0; k < REGISTERS_CNT; k++)
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rgbaIn[k] = _mm_load_si128((__m128i*)(_rgbaIn + 4*k));
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@ -166,24 +167,25 @@ void blur_impl_horizontal_pass_avx(uint32_t *src, uint32_t *dst, float *kernel,
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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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if (leftBorder || rightBorder) {
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uint32_t _rgbaIn[KERNEL_SIZE] ALIGN16;
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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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// x x x P0 P1 P2 P3
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// first loop mirrors P{0..3} to fill x's,
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// second one loads P{0..3}
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for (; i < HALF_KERNEL - column; i++)
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_rgbaIn[i] = *(src + (HALF_KERNEL - i));
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for (; i < KERNEL_SIZE; i++)
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_rgbaIn[i] = *(src - (HALF_KERNEL - i));
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} else {
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for (; i < width - column; i++)
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_rgbaIn[i] = *(src + i);
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for (int k = 0; i < KERNEL_SIZE; i++, k++)
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_rgbaIn[i] = *(src - k);
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}
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uint32_t _rgbaIn[KERNEL_SIZE] ALIGN16;
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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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// x x x P0 P1 P2 P3
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// first loop mirrors P{0..3} to fill x's,
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// second one loads P{0..3}
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for (; i < HALF_KERNEL - column; i++)
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_rgbaIn[i] = *(src + (HALF_KERNEL - i));
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for (; i < KERNEL_SIZE; i++)
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_rgbaIn[i] = *(src - (HALF_KERNEL - i));
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for (int k = 0; k < REGISTERS_CNT; k++)
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rgbaIn[k] = _mm_load_si128((__m128i*)(_rgbaIn + 4*k));
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} else if (rightBorder) {
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for (; i < width - column; i++)
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_rgbaIn[i] = *(src + i);
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for (int k = 0; i < KERNEL_SIZE; i++, k++)
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_rgbaIn[i] = *(src - k);
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for (int k = 0; k < REGISTERS_CNT; k++)
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rgbaIn[k] = _mm_load_si128((__m128i*)(_rgbaIn + 4*k));
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