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This commit is contained in:
Aleksandr Karpinskii
parent
d1717f3ffc
commit
b6fb4d8ff8
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@ -49,148 +49,235 @@ ImagingAlphaComposite(Imaging imDst, Imaging imSrc) {
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x = 0;
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#if defined(__AVX2__)
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{
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__m256i vmm_max_alpha = _mm256_set1_epi32(255);
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__m256i vmm_max_alpha2 = _mm256_set1_epi32(255 * 255);
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__m256i vmm_zero = _mm256_setzero_si256();
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__m256i vmm_half = _mm256_set1_epi16(128);
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__m256i vmm_get_lo = _mm256_set_epi8(
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-1,-1, 5,4, 5,4, 5,4, -1,-1, 1,0, 1,0, 1,0,
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-1,-1, 5,4, 5,4, 5,4, -1,-1, 1,0, 1,0, 1,0);
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__m256i vmm_get_hi = _mm256_set_epi8(
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-1,-1, 13,12, 13,12, 13,12, -1,-1, 9,8, 9,8, 9,8,
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-1,-1, 13,12, 13,12, 13,12, -1,-1, 9,8, 9,8, 9,8);
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#define MM_SHIFTDIV255_epi16(src)\
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_mm256_srli_epi16(_mm256_add_epi16(src, _mm256_srli_epi16(src, 8)), 8)
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for (; x < imDst->xsize - 7; x += 8) {
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__m256i mm_dst, mm_dst_lo, mm_dst_hi;
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__m256i mm_src, mm_src_lo, mm_src_hi;
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__m256i mm_dst_a, mm_src_a, mm_out_a, mm_blend;
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__m256i mm_coef1, mm_coef2, mm_out_lo, mm_out_hi;
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mm_dst = _mm256_loadu_si256((__m256i *) &dst[x]);
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mm_dst_lo = _mm256_unpacklo_epi8(mm_dst, vmm_zero);
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mm_dst_hi = _mm256_unpackhi_epi8(mm_dst, vmm_zero);
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mm_src = _mm256_loadu_si256((__m256i *) &src[x]);
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mm_src_lo = _mm256_unpacklo_epi8(mm_src, vmm_zero);
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mm_src_hi = _mm256_unpackhi_epi8(mm_src, vmm_zero);
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mm_dst_a = _mm256_srli_epi32(mm_dst, 24);
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mm_src_a = _mm256_srli_epi32(mm_src, 24);
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// Compute coefficients
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// blend = dst->a * (255 - src->a); 16 bits
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mm_blend = _mm256_mullo_epi16(mm_dst_a, _mm256_sub_epi32(vmm_max_alpha, mm_src_a));
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// outa = src->a * 255 + dst->a * (255 - src->a); 16 bits
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mm_out_a = _mm256_add_epi32(_mm256_mullo_epi16(mm_src_a, vmm_max_alpha), mm_blend);
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mm_coef1 = _mm256_mullo_epi32(mm_src_a, vmm_max_alpha2);
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// 8 bits
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mm_coef1 = _mm256_cvtps_epi32(
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_mm256_mul_ps(_mm256_cvtepi32_ps(mm_coef1),
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_mm256_rcp_ps(_mm256_cvtepi32_ps(mm_out_a)))
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{
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__m256i vmm_max_alpha = _mm256_set1_epi32(255);
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__m256i vmm_max_alpha2 = _mm256_set1_epi32(255 * 255);
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__m256i vmm_zero = _mm256_setzero_si256();
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__m256i vmm_half = _mm256_set1_epi16(128);
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__m256i vmm_get_lo = _mm256_set_epi8(
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-1,
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-1,
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5,
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4,
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5,
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4,
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5,
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4,
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-1,
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-1,
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1,
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0,
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1,
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0,
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1,
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0,
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-1,
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-1,
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5,
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4,
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5,
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4,
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5,
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4,
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-1,
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-1,
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1,
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0,
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1,
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0,
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1,
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0
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);
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__m256i vmm_get_hi = _mm256_set_epi8(
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-1,
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-1,
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13,
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12,
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13,
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12,
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13,
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12,
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-1,
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-1,
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9,
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8,
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9,
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8,
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9,
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8,
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-1,
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-1,
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13,
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12,
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13,
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12,
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13,
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12,
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-1,
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-1,
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9,
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8,
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9,
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8,
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9,
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8
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);
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// 8 bits
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mm_coef2 = _mm256_sub_epi32(vmm_max_alpha, mm_coef1);
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mm_out_lo = _mm256_add_epi16(
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_mm256_mullo_epi16(mm_src_lo, _mm256_shuffle_epi8(mm_coef1, vmm_get_lo)),
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_mm256_mullo_epi16(mm_dst_lo, _mm256_shuffle_epi8(mm_coef2, vmm_get_lo)));
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mm_out_lo = _mm256_or_si256(mm_out_lo, _mm256_slli_epi64(
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_mm256_unpacklo_epi32(mm_out_a, vmm_zero), 48));
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mm_out_lo = _mm256_add_epi16(mm_out_lo, vmm_half);
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mm_out_lo = MM_SHIFTDIV255_epi16(mm_out_lo);
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#define MM_SHIFTDIV255_epi16(src) \
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_mm256_srli_epi16(_mm256_add_epi16(src, _mm256_srli_epi16(src, 8)), 8)
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mm_out_hi = _mm256_add_epi16(
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_mm256_mullo_epi16(mm_src_hi, _mm256_shuffle_epi8(mm_coef1, vmm_get_hi)),
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_mm256_mullo_epi16(mm_dst_hi, _mm256_shuffle_epi8(mm_coef2, vmm_get_hi)));
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mm_out_hi = _mm256_or_si256(mm_out_hi, _mm256_slli_epi64(
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_mm256_unpackhi_epi32(mm_out_a, vmm_zero), 48));
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mm_out_hi = _mm256_add_epi16(mm_out_hi, vmm_half);
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mm_out_hi = MM_SHIFTDIV255_epi16(mm_out_hi);
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for (; x < imDst->xsize - 7; x += 8) {
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__m256i mm_dst, mm_dst_lo, mm_dst_hi;
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__m256i mm_src, mm_src_lo, mm_src_hi;
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__m256i mm_dst_a, mm_src_a, mm_out_a, mm_blend;
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__m256i mm_coef1, mm_coef2, mm_out_lo, mm_out_hi;
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_mm256_storeu_si256((__m256i *) &out[x],
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_mm256_packus_epi16(mm_out_lo, mm_out_hi));
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mm_dst = _mm256_loadu_si256((__m256i *)&dst[x]);
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mm_dst_lo = _mm256_unpacklo_epi8(mm_dst, vmm_zero);
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mm_dst_hi = _mm256_unpackhi_epi8(mm_dst, vmm_zero);
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mm_src = _mm256_loadu_si256((__m256i *)&src[x]);
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mm_src_lo = _mm256_unpacklo_epi8(mm_src, vmm_zero);
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mm_src_hi = _mm256_unpackhi_epi8(mm_src, vmm_zero);
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mm_dst_a = _mm256_srli_epi32(mm_dst, 24);
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mm_src_a = _mm256_srli_epi32(mm_src, 24);
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// Compute coefficients
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// blend = dst->a * (255 - src->a); 16 bits
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mm_blend = _mm256_mullo_epi16(
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mm_dst_a, _mm256_sub_epi32(vmm_max_alpha, mm_src_a)
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);
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// outa = src->a * 255 + dst->a * (255 - src->a); 16 bits
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mm_out_a = _mm256_add_epi32(
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_mm256_mullo_epi16(mm_src_a, vmm_max_alpha), mm_blend
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);
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mm_coef1 = _mm256_mullo_epi32(mm_src_a, vmm_max_alpha2);
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// 8 bits
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mm_coef1 = _mm256_cvtps_epi32(_mm256_mul_ps(
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_mm256_cvtepi32_ps(mm_coef1),
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_mm256_rcp_ps(_mm256_cvtepi32_ps(mm_out_a))
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));
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// 8 bits
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mm_coef2 = _mm256_sub_epi32(vmm_max_alpha, mm_coef1);
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mm_out_lo = _mm256_add_epi16(
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_mm256_mullo_epi16(
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mm_src_lo, _mm256_shuffle_epi8(mm_coef1, vmm_get_lo)
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),
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_mm256_mullo_epi16(
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mm_dst_lo, _mm256_shuffle_epi8(mm_coef2, vmm_get_lo)
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)
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);
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mm_out_lo = _mm256_or_si256(
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mm_out_lo,
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_mm256_slli_epi64(_mm256_unpacklo_epi32(mm_out_a, vmm_zero), 48)
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);
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mm_out_lo = _mm256_add_epi16(mm_out_lo, vmm_half);
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mm_out_lo = MM_SHIFTDIV255_epi16(mm_out_lo);
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mm_out_hi = _mm256_add_epi16(
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_mm256_mullo_epi16(
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mm_src_hi, _mm256_shuffle_epi8(mm_coef1, vmm_get_hi)
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),
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_mm256_mullo_epi16(
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mm_dst_hi, _mm256_shuffle_epi8(mm_coef2, vmm_get_hi)
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)
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);
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mm_out_hi = _mm256_or_si256(
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mm_out_hi,
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_mm256_slli_epi64(_mm256_unpackhi_epi32(mm_out_a, vmm_zero), 48)
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);
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mm_out_hi = _mm256_add_epi16(mm_out_hi, vmm_half);
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mm_out_hi = MM_SHIFTDIV255_epi16(mm_out_hi);
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_mm256_storeu_si256(
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(__m256i *)&out[x], _mm256_packus_epi16(mm_out_lo, mm_out_hi)
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);
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}
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#undef MM_SHIFTDIV255_epi16
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}
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#undef MM_SHIFTDIV255_epi16
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}
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#endif
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#if defined(__SSE4__)
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{
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__m128i mm_max_alpha = _mm_set1_epi32(255);
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__m128i mm_max_alpha2 = _mm_set1_epi32(255 * 255);
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__m128i mm_zero = _mm_setzero_si128();
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__m128i mm_half = _mm_set1_epi16(128);
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__m128i mm_get_lo = _mm_set_epi8(
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-1,-1, 5,4, 5,4, 5,4, -1,-1, 1,0, 1,0, 1,0);
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__m128i mm_get_hi = _mm_set_epi8(
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-1,-1, 13,12, 13,12, 13,12, -1,-1, 9,8, 9,8, 9,8);
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{
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__m128i mm_max_alpha = _mm_set1_epi32(255);
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__m128i mm_max_alpha2 = _mm_set1_epi32(255 * 255);
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__m128i mm_zero = _mm_setzero_si128();
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__m128i mm_half = _mm_set1_epi16(128);
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__m128i mm_get_lo =
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_mm_set_epi8(-1, -1, 5, 4, 5, 4, 5, 4, -1, -1, 1, 0, 1, 0, 1, 0);
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__m128i mm_get_hi =
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_mm_set_epi8(-1, -1, 13, 12, 13, 12, 13, 12, -1, -1, 9, 8, 9, 8, 9, 8);
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#define MM_SHIFTDIV255_epi16(src)\
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_mm_srli_epi16(_mm_add_epi16(src, _mm_srli_epi16(src, 8)), 8)
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#define MM_SHIFTDIV255_epi16(src) \
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_mm_srli_epi16(_mm_add_epi16(src, _mm_srli_epi16(src, 8)), 8)
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for (; x < imDst->xsize - 3; x += 4) {
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__m128i mm_dst, mm_dst_lo, mm_dst_hi;
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__m128i mm_src, mm_src_hi, mm_src_lo;
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__m128i mm_dst_a, mm_src_a, mm_out_a, mm_blend;
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__m128i mm_coef1, mm_coef2, mm_out_lo, mm_out_hi;
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for (; x < imDst->xsize - 3; x += 4) {
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__m128i mm_dst, mm_dst_lo, mm_dst_hi;
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__m128i mm_src, mm_src_hi, mm_src_lo;
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__m128i mm_dst_a, mm_src_a, mm_out_a, mm_blend;
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__m128i mm_coef1, mm_coef2, mm_out_lo, mm_out_hi;
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// [8] a3 b3 g3 r3 a2 b2 g2 r2 a1 b1 g1 r1 a0 b0 g0 r0
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mm_dst = _mm_loadu_si128((__m128i *) &dst[x]);
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// [16] a1 b1 g1 r1 a0 b0 g0 r0
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mm_dst_lo = _mm_unpacklo_epi8(mm_dst, mm_zero);
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// [16] a3 b3 g3 r3 a2 b2 g2 r2
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mm_dst_hi = _mm_unpackhi_epi8(mm_dst, mm_zero);
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// [8] a3 b3 g3 r3 a2 b2 g2 r2 a1 b1 g1 r1 a0 b0 g0 r0
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mm_src = _mm_loadu_si128((__m128i *) &src[x]);
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mm_src_lo = _mm_unpacklo_epi8(mm_src, mm_zero);
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mm_src_hi = _mm_unpackhi_epi8(mm_src, mm_zero);
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// [8] a3 b3 g3 r3 a2 b2 g2 r2 a1 b1 g1 r1 a0 b0 g0 r0
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mm_dst = _mm_loadu_si128((__m128i *)&dst[x]);
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// [16] a1 b1 g1 r1 a0 b0 g0 r0
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mm_dst_lo = _mm_unpacklo_epi8(mm_dst, mm_zero);
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// [16] a3 b3 g3 r3 a2 b2 g2 r2
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mm_dst_hi = _mm_unpackhi_epi8(mm_dst, mm_zero);
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// [8] a3 b3 g3 r3 a2 b2 g2 r2 a1 b1 g1 r1 a0 b0 g0 r0
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mm_src = _mm_loadu_si128((__m128i *)&src[x]);
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mm_src_lo = _mm_unpacklo_epi8(mm_src, mm_zero);
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mm_src_hi = _mm_unpackhi_epi8(mm_src, mm_zero);
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// [32] a3 a2 a1 a0
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mm_dst_a = _mm_srli_epi32(mm_dst, 24);
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mm_src_a = _mm_srli_epi32(mm_src, 24);
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// [32] a3 a2 a1 a0
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mm_dst_a = _mm_srli_epi32(mm_dst, 24);
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mm_src_a = _mm_srli_epi32(mm_src, 24);
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// Compute coefficients
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// blend = dst->a * (255 - src->a)
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// [16] xx b3 xx b2 xx b1 xx b0
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mm_blend = _mm_mullo_epi16(mm_dst_a, _mm_sub_epi32(mm_max_alpha, mm_src_a));
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// outa = src->a * 255 + blend
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// [16] xx a3 xx a2 xx a1 xx a0
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mm_out_a = _mm_add_epi32(_mm_mullo_epi16(mm_src_a, mm_max_alpha), mm_blend);
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// coef1 = src->a * 255 * 255 / outa
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mm_coef1 = _mm_mullo_epi32(mm_src_a, mm_max_alpha2);
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// [8] xx xx xx c3 xx xx xx c2 xx xx xx c1 xx xx xx c0
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mm_coef1 = _mm_cvtps_epi32(
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_mm_mul_ps(_mm_cvtepi32_ps(mm_coef1),
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_mm_rcp_ps(_mm_cvtepi32_ps(mm_out_a)))
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);
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// [8] xx xx xx c3 xx xx xx c2 xx xx xx c1 xx xx xx c0
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mm_coef2 = _mm_sub_epi32(mm_max_alpha, mm_coef1);
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// Compute coefficients
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// blend = dst->a * (255 - src->a)
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// [16] xx b3 xx b2 xx b1 xx b0
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mm_blend =
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_mm_mullo_epi16(mm_dst_a, _mm_sub_epi32(mm_max_alpha, mm_src_a));
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// outa = src->a * 255 + blend
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// [16] xx a3 xx a2 xx a1 xx a0
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mm_out_a =
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_mm_add_epi32(_mm_mullo_epi16(mm_src_a, mm_max_alpha), mm_blend);
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// coef1 = src->a * 255 * 255 / outa
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mm_coef1 = _mm_mullo_epi32(mm_src_a, mm_max_alpha2);
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// [8] xx xx xx c3 xx xx xx c2 xx xx xx c1 xx xx xx c0
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mm_coef1 = _mm_cvtps_epi32(_mm_mul_ps(
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_mm_cvtepi32_ps(mm_coef1), _mm_rcp_ps(_mm_cvtepi32_ps(mm_out_a))
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));
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// [8] xx xx xx c3 xx xx xx c2 xx xx xx c1 xx xx xx c0
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mm_coef2 = _mm_sub_epi32(mm_max_alpha, mm_coef1);
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mm_out_lo = _mm_add_epi16(
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_mm_mullo_epi16(mm_src_lo, _mm_shuffle_epi8(mm_coef1, mm_get_lo)),
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_mm_mullo_epi16(mm_dst_lo, _mm_shuffle_epi8(mm_coef2, mm_get_lo)));
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mm_out_lo = _mm_or_si128(mm_out_lo, _mm_slli_epi64(
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_mm_unpacklo_epi32(mm_out_a, mm_zero), 48));
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mm_out_lo = _mm_add_epi16(mm_out_lo, mm_half);
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mm_out_lo = MM_SHIFTDIV255_epi16(mm_out_lo);
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mm_out_lo = _mm_add_epi16(
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_mm_mullo_epi16(mm_src_lo, _mm_shuffle_epi8(mm_coef1, mm_get_lo)),
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_mm_mullo_epi16(mm_dst_lo, _mm_shuffle_epi8(mm_coef2, mm_get_lo))
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);
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mm_out_lo = _mm_or_si128(
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mm_out_lo, _mm_slli_epi64(_mm_unpacklo_epi32(mm_out_a, mm_zero), 48)
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);
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mm_out_lo = _mm_add_epi16(mm_out_lo, mm_half);
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mm_out_lo = MM_SHIFTDIV255_epi16(mm_out_lo);
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mm_out_hi = _mm_add_epi16(
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_mm_mullo_epi16(mm_src_hi, _mm_shuffle_epi8(mm_coef1, mm_get_hi)),
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_mm_mullo_epi16(mm_dst_hi, _mm_shuffle_epi8(mm_coef2, mm_get_hi)));
|
||||
mm_out_hi = _mm_or_si128(mm_out_hi, _mm_slli_epi64(
|
||||
_mm_unpackhi_epi32(mm_out_a, mm_zero), 48));
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||||
mm_out_hi = _mm_add_epi16(mm_out_hi, mm_half);
|
||||
mm_out_hi = MM_SHIFTDIV255_epi16(mm_out_hi);
|
||||
mm_out_hi = _mm_add_epi16(
|
||||
_mm_mullo_epi16(mm_src_hi, _mm_shuffle_epi8(mm_coef1, mm_get_hi)),
|
||||
_mm_mullo_epi16(mm_dst_hi, _mm_shuffle_epi8(mm_coef2, mm_get_hi))
|
||||
);
|
||||
mm_out_hi = _mm_or_si128(
|
||||
mm_out_hi, _mm_slli_epi64(_mm_unpackhi_epi32(mm_out_a, mm_zero), 48)
|
||||
);
|
||||
mm_out_hi = _mm_add_epi16(mm_out_hi, mm_half);
|
||||
mm_out_hi = MM_SHIFTDIV255_epi16(mm_out_hi);
|
||||
|
||||
_mm_storeu_si128((__m128i *) &out[x],
|
||||
_mm_packus_epi16(mm_out_lo, mm_out_hi));
|
||||
_mm_storeu_si128(
|
||||
(__m128i *)&out[x], _mm_packus_epi16(mm_out_lo, mm_out_hi)
|
||||
);
|
||||
}
|
||||
|
||||
#undef MM_SHIFTDIV255_epi16
|
||||
}
|
||||
|
||||
#undef MM_SHIFTDIV255_epi16
|
||||
}
|
||||
#endif
|
||||
|
||||
for (; x < imDst->xsize; x += 1) {
|
||||
|
|
@ -207,15 +294,18 @@ ImagingAlphaComposite(Imaging imDst, Imaging imSrc) {
|
|||
UINT32 outa255 = src[x].a * 255 + blend;
|
||||
// There we use 7 bits for precision.
|
||||
// We could use more, but we go beyond 32 bits.
|
||||
UINT32 coef1 = src[x].a * 255 * 255 * (1<<PRECISION_BITS) / outa255;
|
||||
UINT32 coef2 = 255 * (1<<PRECISION_BITS) - coef1;
|
||||
UINT32 coef1 = src[x].a * 255 * 255 * (1 << PRECISION_BITS) / outa255;
|
||||
UINT32 coef2 = 255 * (1 << PRECISION_BITS) - coef1;
|
||||
|
||||
tmpr = src[x].r * coef1 + dst[x].r * coef2;
|
||||
tmpg = src[x].g * coef1 + dst[x].g * coef2;
|
||||
tmpb = src[x].b * coef1 + dst[x].b * coef2;
|
||||
out[x].r = SHIFTFORDIV255(tmpr + (0x80<<PRECISION_BITS)) >> PRECISION_BITS;
|
||||
out[x].g = SHIFTFORDIV255(tmpg + (0x80<<PRECISION_BITS)) >> PRECISION_BITS;
|
||||
out[x].b = SHIFTFORDIV255(tmpb + (0x80<<PRECISION_BITS)) >> PRECISION_BITS;
|
||||
out[x].r =
|
||||
SHIFTFORDIV255(tmpr + (0x80 << PRECISION_BITS)) >> PRECISION_BITS;
|
||||
out[x].g =
|
||||
SHIFTFORDIV255(tmpg + (0x80 << PRECISION_BITS)) >> PRECISION_BITS;
|
||||
out[x].b =
|
||||
SHIFTFORDIV255(tmpb + (0x80 << PRECISION_BITS)) >> PRECISION_BITS;
|
||||
out[x].a = SHIFTFORDIV255(outa255 + 0x80);
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user