mirror of
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589 lines
20 KiB
C++
589 lines
20 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "Blur.h"
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#include <string.h>
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#ifdef _MIPS_ARCH_LOONGSON3A
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#include "MMIHelpers.h"
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namespace mozilla {
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namespace gfx {
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typedef struct { double l; double h; } __m128i;
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MOZ_ALWAYS_INLINE
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__m128i loadUnaligned128(__m128i *p)
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{
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__m128i v;
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asm volatile (
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".set push \n\t"
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".set arch=loongson3a \n\t"
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"gsldlc1 %[vh], 0xf(%[p]) \n\t"
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"gsldrc1 %[vh], 0x8(%[p]) \n\t"
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"gsldlc1 %[vl], 0x7(%[p]) \n\t"
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"gsldrc1 %[vl], 0x0(%[p]) \n\t"
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".set pop \n\t"
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:[vh]"=f"(v.h), [vl]"=f"(v.l)
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:[p]"r"(p)
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:"memory"
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);
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return v;
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}
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MOZ_ALWAYS_INLINE
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__m128i Divide(__m128i aValues, __m128i aDivisor)
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{
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uint64_t tmp;
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double srl32;
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__m128i mask, ra, p4321, t1, t2;
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asm volatile (
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".set push \n\t"
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".set arch=loongson3a \n\t"
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"li %[tmp], 0x80000000 \n\t"
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"mtc1 %[tmp], %[ral] \n\t"
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"xor %[maskl], %[maskl], %[maskl] \n\t"
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"mov.d %[rah], %[ral] \n\t"
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"li %[tmp], 0xffffffff \n\t"
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"mthc1 %[tmp], %[maskl] \n\t"
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"mov.d %[maskh], %[maskl] \n\t"
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".set pop \n\t"
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:[rah]"=f"(ra.h), [ral]"=f"(ra.l),
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[maskh]"=f"(mask.h), [maskl]"=f"(mask.l),
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[tmp]"=&r"(tmp)
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);
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asm volatile (
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".set push \n\t"
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".set arch=loongson3a \n\t"
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"ori %[tmp], $0, 32 \n\t"
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"mtc1 %[tmp], %[srl32] \n\t"
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_mm_pmuluw(t1, av, ad)
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_mm_psrld(t2, av, srl32)
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_mm_pmuluw(t2, t2, ad)
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// Add 1 << 31 before shifting or masking the lower 32 bits away, so that the
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// result is rounded.
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_mm_paddd(t1, t1, ra)
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_mm_psrld(t1, t1, srl32)
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_mm_paddd(t2, t2, ra)
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_mm_and(t2, t2, mask)
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_mm_or(p4321, t1, t2)
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".set pop \n\t"
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:[p4321h]"=&f"(p4321.h), [p4321l]"=&f"(p4321.l),
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[t1h]"=&f"(t1.h), [t1l]"=&f"(t1.l),
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[t2h]"=&f"(t2.h), [t2l]"=&f"(t2.l),
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[srl32]"=&f"(srl32), [tmp]"=&r"(tmp)
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:[rah]"f"(ra.h), [ral]"f"(ra.l),
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[maskh]"f"(mask.h), [maskl]"f"(mask.l),
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[avh]"f"(aValues.h), [avl]"f"(aValues.l),
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[adh]"f"(aDivisor.h), [adl]"f"(aDivisor.l)
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);
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return p4321;
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}
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MOZ_ALWAYS_INLINE
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__m128i BlurFourPixels(const __m128i& aTopLeft, const __m128i& aTopRight,
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const __m128i& aBottomRight, const __m128i& aBottomLeft,
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const __m128i& aDivisor)
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{
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__m128i values;
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asm volatile (
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".set push \n\t"
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".set arch=loongson3a \n\t"
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_mm_psubw(val, abr, atr)
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_mm_psubw(val, val, abl)
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_mm_paddw(val, val, atl)
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".set pop \n\t"
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:[valh]"=&f"(values.h), [vall]"=&f"(values.l)
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:[abrh]"f"(aBottomRight.h), [abrl]"f"(aBottomRight.l),
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[atrh]"f"(aTopRight.h), [atrl]"f"(aTopRight.l),
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[ablh]"f"(aBottomLeft.h), [abll]"f"(aBottomLeft.l),
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[atlh]"f"(aTopLeft.h), [atll]"f"(aTopLeft.l)
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);
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return Divide(values, aDivisor);
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}
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MOZ_ALWAYS_INLINE
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void LoadIntegralRowFromRow(uint32_t *aDest, const uint8_t *aSource,
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int32_t aSourceWidth, int32_t aLeftInflation,
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int32_t aRightInflation)
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{
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int32_t currentRowSum = 0;
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for (int x = 0; x < aLeftInflation; x++) {
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currentRowSum += aSource[0];
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aDest[x] = currentRowSum;
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}
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for (int x = aLeftInflation; x < (aSourceWidth + aLeftInflation); x++) {
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currentRowSum += aSource[(x - aLeftInflation)];
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aDest[x] = currentRowSum;
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}
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for (int x = (aSourceWidth + aLeftInflation); x < (aSourceWidth + aLeftInflation + aRightInflation); x++) {
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currentRowSum += aSource[aSourceWidth - 1];
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aDest[x] = currentRowSum;
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}
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}
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// This function calculates an integral of four pixels stored in the 4
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// 32-bit integers on aPixels. i.e. for { 30, 50, 80, 100 } this returns
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// { 30, 80, 160, 260 }. This seems to be the fastest way to do this after
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// much testing.
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MOZ_ALWAYS_INLINE
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__m128i AccumulatePixelSums(__m128i aPixels)
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{
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uint64_t tr;
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double tmp, s4, s64;
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__m128i sumPixels, currentPixels, zero;
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asm volatile (
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".set push \n\t"
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".set arch=loongson3a \n\t"
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_mm_xor(z, z, z)
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"li %[tr], 64 \n\t"
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"mtc1 %[tr], %[s64] \n\t"
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"li %[tr], 32 \n\t"
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"mtc1 %[tr], %[s4] \n\t"
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_mm_psllq(cp, ap, s4, s64, t)
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_mm_paddw(sp, ap, cp)
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_mm_punpckldq(cp, z, sp)
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_mm_paddw(sp, sp, cp)
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".set pop \n\t"
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:[sph]"=&f"(sumPixels.h), [spl]"=&f"(sumPixels.l),
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[cph]"=&f"(currentPixels.h), [cpl]"=&f"(currentPixels.l),
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[zh]"=&f"(zero.h), [zl]"=&f"(zero.l),
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[s4]"=&f"(s4), [s64]"=&f"(s64), [t]"=&f"(tmp), [tr]"=&r"(tr)
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:[aph]"f"(aPixels.h), [apl]"f"(aPixels.l)
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);
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return sumPixels;
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}
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MOZ_ALWAYS_INLINE
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void GenerateIntegralImage_LS3(int32_t aLeftInflation, int32_t aRightInflation,
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int32_t aTopInflation, int32_t aBottomInflation,
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uint32_t *aIntegralImage, size_t aIntegralImageStride,
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uint8_t *aSource, int32_t aSourceStride, const IntSize &aSize)
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{
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MOZ_ASSERT(!(aLeftInflation & 3));
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uint32_t stride32bit = aIntegralImageStride / 4;
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IntSize integralImageSize(aSize.width + aLeftInflation + aRightInflation,
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aSize.height + aTopInflation + aBottomInflation);
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LoadIntegralRowFromRow(aIntegralImage, aSource, aSize.width, aLeftInflation, aRightInflation);
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for (int y = 1; y < aTopInflation + 1; y++) {
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uint32_t *intRow = aIntegralImage + (y * stride32bit);
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uint32_t *intPrevRow = aIntegralImage + (y - 1) * stride32bit;
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uint32_t *intFirstRow = aIntegralImage;
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for (int x = 0; x < integralImageSize.width; x += 4) {
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__m128i firstRow, previousRow;
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asm volatile (
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".set push \n\t"
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".set arch=loongson3a \n\t"
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"gslqc1 %[frh], %[frl], (%[fr]) \n\t"
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"gslqc1 %[prh], %[prl], (%[pr]) \n\t"
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_mm_paddw(fr, fr, pr)
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"gssqc1 %[frh], %[frl], (%[r]) \n\t"
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".set pop \n\t"
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:[frh]"=&f"(firstRow.h), [frl]"=&f"(firstRow.l),
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[prh]"=&f"(previousRow.h), [prl]"=&f"(previousRow.l)
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:[fr]"r"(intFirstRow + x), [pr]"r"(intPrevRow + x),
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[r]"r"(intRow + x)
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:"memory"
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);
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}
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}
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uint64_t tmp;
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double s44, see;
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__m128i zero;
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asm volatile (
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".set push \n\t"
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".set arch=loongson3a \n\t"
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"li %[tmp], 0xee \n\t"
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"mtc1 %[tmp], %[see] \n\t"
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"li %[tmp], 0x44 \n\t"
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"mtc1 %[tmp], %[s44] \n\t"
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_mm_xor(zero, zero, zero)
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".set pop \n\t"
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:[tmp]"=&r"(tmp), [s44]"=f"(s44), [see]"=f"(see),
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[zeroh]"=f"(zero.h), [zerol]"=f"(zero.l)
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);
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for (int y = aTopInflation + 1; y < (aSize.height + aTopInflation); y++) {
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__m128i currentRowSum;
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uint32_t *intRow = aIntegralImage + (y * stride32bit);
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uint32_t *intPrevRow = aIntegralImage + (y - 1) * stride32bit;
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uint8_t *sourceRow = aSource + aSourceStride * (y - aTopInflation);
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uint32_t pixel = sourceRow[0];
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asm volatile (
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".set push \n\t"
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".set arch=loongson3a \n\t"
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_mm_xor(cr, cr, cr)
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".set pop \n\t"
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:[crh]"=f"(currentRowSum.h), [crl]"=f"(currentRowSum.l)
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);
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for (int x = 0; x < aLeftInflation; x += 4) {
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__m128i sumPixels, t;
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asm volatile (
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".set push \n\t"
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".set arch=loongson3a \n\t"
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"mtc1 %[pix], %[spl] \n\t"
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"punpcklwd %[spl], %[spl], %[spl] \n\t"
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"mov.d %[sph], %[spl] \n\t"
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"pshufh %[sph], %[spl], %[s44] \n\t"
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"pshufh %[spl], %[spl], %[s44] \n\t"
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".set pop \n\t"
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:[sph]"=&f"(sumPixels.h), [spl]"=&f"(sumPixels.l)
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:[pix]"r"(pixel), [s44]"f"(s44)
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);
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sumPixels = AccumulatePixelSums(sumPixels);
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asm volatile (
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".set push \n\t"
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".set arch=loongson3a \n\t"
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_mm_paddw(sp, sp, cr)
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"pshufh %[crh], %[sph], %[see] \n\t"
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"pshufh %[crl], %[sph], %[see] \n\t"
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"gslqc1 %[th], %[tl], (%[pr]) \n\t"
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_mm_paddw(t, sp, t)
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"gssqc1 %[th], %[tl], (%[r]) \n\t"
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".set pop \n\t"
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:[th]"=&f"(t.h), [tl]"=&f"(t.l),
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[sph]"+f"(sumPixels.h), [spl]"+f"(sumPixels.l),
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[crh]"+f"(currentRowSum.h), [crl]"+f"(currentRowSum.l)
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:[r]"r"(intRow + x), [pr]"r"(intPrevRow + x), [see]"f"(see)
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:"memory"
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);
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}
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for (int x = aLeftInflation; x < (aSize.width + aLeftInflation); x += 4) {
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uint32_t pixels = *(uint32_t*)(sourceRow + (x - aLeftInflation));
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__m128i sumPixels, t;
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// It's important to shuffle here. When we exit this loop currentRowSum
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// has to be set to sumPixels, so that the following loop can get the
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// correct pixel for the currentRowSum. The highest order pixel in
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// currentRowSum could've originated from accumulation in the stride.
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asm volatile (
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".set push \n\t"
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".set arch=loongson3a \n\t"
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"pshufh %[crl], %[crh], %[see] \n\t"
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"pshufh %[crh], %[crh], %[see] \n\t"
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"mtc1 %[pix], %[spl] \n\t"
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"punpcklwd %[spl], %[spl], %[spl] \n\t"
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"mov.d %[sph], %[spl] \n\t"
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_mm_punpcklbh(sp, sp, zero)
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_mm_punpcklhw(sp, sp, zero)
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".set pop \n\t"
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:[sph]"=&f"(sumPixels.h), [spl]"=&f"(sumPixels.l),
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[crh]"+f"(currentRowSum.h), [crl]"+f"(currentRowSum.l)
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:[pix]"r"(pixels), [see]"f"(see),
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[zeroh]"f"(zero.h), [zerol]"f"(zero.l)
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);
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sumPixels = AccumulatePixelSums(sumPixels);
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asm volatile (
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".set push \n\t"
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".set arch=loongson3a \n\t"
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_mm_paddw(sp, sp, cr)
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"mov.d %[crh], %[sph] \n\t"
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"mov.d %[crl], %[spl] \n\t"
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"gslqc1 %[th], %[tl], (%[pr]) \n\t"
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_mm_paddw(t, sp, t)
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"gssqc1 %[th], %[tl], (%[r]) \n\t"
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".set pop \n\t"
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:[th]"=&f"(t.h), [tl]"=&f"(t.l),
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[sph]"+f"(sumPixels.h), [spl]"+f"(sumPixels.l),
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[crh]"+f"(currentRowSum.h), [crl]"+f"(currentRowSum.l)
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:[r]"r"(intRow + x), [pr]"r"(intPrevRow + x)
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:"memory"
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);
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}
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pixel = sourceRow[aSize.width - 1];
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int x = (aSize.width + aLeftInflation);
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if ((aSize.width & 3)) {
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// Deal with unaligned portion. Get the correct pixel from currentRowSum,
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// see explanation above.
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uint32_t intCurrentRowSum = ((uint32_t*)¤tRowSum)[(aSize.width % 4) - 1];
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for (; x < integralImageSize.width; x++) {
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// We could be unaligned here!
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if (!(x & 3)) {
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// aligned!
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asm volatile (
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".set push \n\t"
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".set arch=loongson3a \n\t"
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"mtc1 %[cr], %[crl] \n\t"
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"punpcklwd %[crl], %[crl], %[crl] \n\t"
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"mov.d %[crh], %[crl] \n\t"
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".set pop \n\t"
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:[crh]"=f"(currentRowSum.h), [crl]"=f"(currentRowSum.l)
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:[cr]"r"(intCurrentRowSum)
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);
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break;
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}
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intCurrentRowSum += pixel;
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intRow[x] = intPrevRow[x] + intCurrentRowSum;
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}
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} else {
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asm volatile (
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".set push \n\t"
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".set arch=loongson3a \n\t"
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"pshufh %[crl], %[crh], %[see] \n\t"
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"pshufh %[crh], %[crh], %[see] \n\t"
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".set pop \n\t"
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:[crh]"+f"(currentRowSum.h), [crl]"+f"(currentRowSum.l)
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:[see]"f"(see)
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);
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}
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for (; x < integralImageSize.width; x += 4) {
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__m128i sumPixels, t;
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asm volatile (
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".set push \n\t"
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".set arch=loongson3a \n\t"
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"mtc1 %[pix], %[spl] \n\t"
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"punpcklwd %[spl], %[spl], %[spl] \n\t"
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"mov.d %[sph], %[spl] \n\t"
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".set pop \n\t"
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:[sph]"=f"(sumPixels.h), [spl]"=f"(sumPixels.l)
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:[pix]"r"(pixel)
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);
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sumPixels = AccumulatePixelSums(sumPixels);
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asm volatile (
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".set push \n\t"
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".set arch=loongson3a \n\t"
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_mm_paddw(sp, sp, cr)
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"pshufh %[crh], %[sph], %[see] \n\t"
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"pshufh %[crl], %[sph], %[see] \n\t"
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"gslqc1 %[th], %[tl], (%[pr]) \n\t"
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_mm_paddw(t, sp, t)
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"gssqc1 %[th], %[tl], (%[r]) \n\t"
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".set pop \n\t"
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:[th]"=&f"(t.h), [tl]"=&f"(t.l),
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[sph]"+f"(sumPixels.h), [spl]"+f"(sumPixels.l),
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[crh]"+f"(currentRowSum.h), [crl]"+f"(currentRowSum.l)
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:[r]"r"(intRow + x), [pr]"r"(intPrevRow + x), [see]"f"(see)
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:"memory"
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);
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}
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}
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if (aBottomInflation) {
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// Store the last valid row of our source image in the last row of
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// our integral image. This will be overwritten with the correct values
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// in the upcoming loop.
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LoadIntegralRowFromRow(aIntegralImage + (integralImageSize.height - 1) * stride32bit,
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aSource + (aSize.height - 1) * aSourceStride, aSize.width, aLeftInflation, aRightInflation);
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|
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for (int y = aSize.height + aTopInflation; y < integralImageSize.height; y++) {
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__m128i *intRow = (__m128i*)(aIntegralImage + (y * stride32bit));
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__m128i *intPrevRow = (__m128i*)(aIntegralImage + (y - 1) * stride32bit);
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__m128i *intLastRow = (__m128i*)(aIntegralImage + (integralImageSize.height - 1) * stride32bit);
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for (int x = 0; x < integralImageSize.width; x += 4) {
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__m128i t1, t2;
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asm volatile (
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".set push \n\t"
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".set arch=loongson3a \n\t"
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"gslqc1 %[t1h], %[t1l], (%[lr]) \n\t"
|
|
"gslqc1 %[t2h], %[t2l], (%[pr]) \n\t"
|
|
_mm_paddw(t1, t1, t2)
|
|
"gssqc1 %[t1h], %[t1l], (%[r]) \n\t"
|
|
".set pop \n\t"
|
|
:[t1h]"=&f"(t1.h), [t1l]"=&f"(t1.l),
|
|
[t2h]"=&f"(t2.h), [t2l]"=&f"(t2.l)
|
|
:[r]"r"(intRow + (x / 4)),
|
|
[lr]"r"(intLastRow + (x / 4)),
|
|
[pr]"r"(intPrevRow + (x / 4))
|
|
:"memory"
|
|
);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Attempt to do an in-place box blur using an integral image.
|
|
*/
|
|
void
|
|
AlphaBoxBlur::BoxBlur_LS3(uint8_t* aData,
|
|
int32_t aLeftLobe,
|
|
int32_t aRightLobe,
|
|
int32_t aTopLobe,
|
|
int32_t aBottomLobe,
|
|
uint32_t *aIntegralImage,
|
|
size_t aIntegralImageStride)
|
|
{
|
|
IntSize size = GetSize();
|
|
|
|
MOZ_ASSERT(size.height > 0);
|
|
|
|
// Our 'left' or 'top' lobe will include the current pixel. i.e. when
|
|
// looking at an integral image the value of a pixel at 'x,y' is calculated
|
|
// using the value of the integral image values above/below that.
|
|
aLeftLobe++;
|
|
aTopLobe++;
|
|
int32_t boxSize = (aLeftLobe + aRightLobe) * (aTopLobe + aBottomLobe);
|
|
|
|
MOZ_ASSERT(boxSize > 0);
|
|
|
|
if (boxSize == 1) {
|
|
return;
|
|
}
|
|
|
|
uint32_t reciprocal = uint32_t((uint64_t(1) << 32) / boxSize);
|
|
|
|
uint32_t stride32bit = aIntegralImageStride / 4;
|
|
int32_t leftInflation = RoundUpToMultipleOf4(aLeftLobe).value();
|
|
|
|
GenerateIntegralImage_LS3(leftInflation, aRightLobe, aTopLobe, aBottomLobe,
|
|
aIntegralImage, aIntegralImageStride, aData,
|
|
mStride, size);
|
|
|
|
__m128i divisor, zero;
|
|
asm volatile (
|
|
".set push \n\t"
|
|
".set arch=loongson3a \n\t"
|
|
"mtc1 %[rec], %[divl] \n\t"
|
|
"punpcklwd %[divl], %[divl], %[divl] \n\t"
|
|
"mov.d %[divh], %[divl] \n\t"
|
|
_mm_xor(zero, zero, zero)
|
|
".set pop \n\t"
|
|
:[divh]"=f"(divisor.h), [divl]"=f"(divisor.l),
|
|
[zeroh]"=f"(zero.h), [zerol]"=f"(zero.l)
|
|
:[rec]"r"(reciprocal)
|
|
);
|
|
|
|
// This points to the start of the rectangle within the IntegralImage that overlaps
|
|
// the surface being blurred.
|
|
uint32_t *innerIntegral = aIntegralImage + (aTopLobe * stride32bit) + leftInflation;
|
|
|
|
IntRect skipRect = mSkipRect;
|
|
int32_t stride = mStride;
|
|
uint8_t *data = aData;
|
|
for (int32_t y = 0; y < size.height; y++) {
|
|
bool inSkipRectY = y > skipRect.y && y < skipRect.YMost();
|
|
|
|
uint32_t *topLeftBase = innerIntegral + ((y - aTopLobe) * ptrdiff_t(stride32bit) - aLeftLobe);
|
|
uint32_t *topRightBase = innerIntegral + ((y - aTopLobe) * ptrdiff_t(stride32bit) + aRightLobe);
|
|
uint32_t *bottomRightBase = innerIntegral + ((y + aBottomLobe) * ptrdiff_t(stride32bit) + aRightLobe);
|
|
uint32_t *bottomLeftBase = innerIntegral + ((y + aBottomLobe) * ptrdiff_t(stride32bit) - aLeftLobe);
|
|
|
|
int32_t x = 0;
|
|
// Process 16 pixels at a time for as long as possible.
|
|
for (; x <= size.width - 16; x += 16) {
|
|
if (inSkipRectY && x > skipRect.x && x < skipRect.XMost()) {
|
|
x = skipRect.XMost() - 16;
|
|
// Trigger early jump on coming loop iterations, this will be reset
|
|
// next line anyway.
|
|
inSkipRectY = false;
|
|
continue;
|
|
}
|
|
|
|
__m128i topLeft;
|
|
__m128i topRight;
|
|
__m128i bottomRight;
|
|
__m128i bottomLeft;
|
|
|
|
topLeft = loadUnaligned128((__m128i*)(topLeftBase + x));
|
|
topRight = loadUnaligned128((__m128i*)(topRightBase + x));
|
|
bottomRight = loadUnaligned128((__m128i*)(bottomRightBase + x));
|
|
bottomLeft = loadUnaligned128((__m128i*)(bottomLeftBase + x));
|
|
__m128i result1 = BlurFourPixels(topLeft, topRight, bottomRight, bottomLeft, divisor);
|
|
|
|
topLeft = loadUnaligned128((__m128i*)(topLeftBase + x + 4));
|
|
topRight = loadUnaligned128((__m128i*)(topRightBase + x + 4));
|
|
bottomRight = loadUnaligned128((__m128i*)(bottomRightBase + x + 4));
|
|
bottomLeft = loadUnaligned128((__m128i*)(bottomLeftBase + x + 4));
|
|
__m128i result2 = BlurFourPixels(topLeft, topRight, bottomRight, bottomLeft, divisor);
|
|
|
|
topLeft = loadUnaligned128((__m128i*)(topLeftBase + x + 8));
|
|
topRight = loadUnaligned128((__m128i*)(topRightBase + x + 8));
|
|
bottomRight = loadUnaligned128((__m128i*)(bottomRightBase + x + 8));
|
|
bottomLeft = loadUnaligned128((__m128i*)(bottomLeftBase + x + 8));
|
|
__m128i result3 = BlurFourPixels(topLeft, topRight, bottomRight, bottomLeft, divisor);
|
|
|
|
topLeft = loadUnaligned128((__m128i*)(topLeftBase + x + 12));
|
|
topRight = loadUnaligned128((__m128i*)(topRightBase + x + 12));
|
|
bottomRight = loadUnaligned128((__m128i*)(bottomRightBase + x + 12));
|
|
bottomLeft = loadUnaligned128((__m128i*)(bottomLeftBase + x + 12));
|
|
__m128i result4 = BlurFourPixels(topLeft, topRight, bottomRight, bottomLeft, divisor);
|
|
|
|
double t;
|
|
__m128i final;
|
|
asm volatile (
|
|
".set push \n\t"
|
|
".set arch=loongson3a \n\t"
|
|
_mm_packsswh(r3, r3, r4, t)
|
|
_mm_packsswh(f, r1, r2, t)
|
|
_mm_packushb(f, f, r3, t)
|
|
"gssdlc1 %[fh], 0xf(%[d]) \n\t"
|
|
"gssdrc1 %[fh], 0x8(%[d]) \n\t"
|
|
"gssdlc1 %[fl], 0x7(%[d]) \n\t"
|
|
"gssdrc1 %[fl], 0x0(%[d]) \n\t"
|
|
".set pop \n\t"
|
|
:[fh]"=&f"(final.h), [fl]"=&f"(final.l),
|
|
[r3h]"+f"(result3.h), [r3l]"+f"(result3.l),
|
|
[t]"=&f"(t)
|
|
:[r1h]"f"(result1.h), [r1l]"f"(result1.l),
|
|
[r2h]"f"(result2.h), [r2l]"f"(result2.l),
|
|
[r4h]"f"(result4.h), [r4l]"f"(result4.l),
|
|
[d]"r"(data + stride * y + x)
|
|
:"memory"
|
|
);
|
|
}
|
|
|
|
// Process the remaining pixels 4 bytes at a time.
|
|
for (; x < size.width; x += 4) {
|
|
if (inSkipRectY && x > skipRect.x && x < skipRect.XMost()) {
|
|
x = skipRect.XMost() - 4;
|
|
// Trigger early jump on coming loop iterations, this will be reset
|
|
// next line anyway.
|
|
inSkipRectY = false;
|
|
continue;
|
|
}
|
|
__m128i topLeft = loadUnaligned128((__m128i*)(topLeftBase + x));
|
|
__m128i topRight = loadUnaligned128((__m128i*)(topRightBase + x));
|
|
__m128i bottomRight = loadUnaligned128((__m128i*)(bottomRightBase + x));
|
|
__m128i bottomLeft = loadUnaligned128((__m128i*)(bottomLeftBase + x));
|
|
|
|
__m128i result = BlurFourPixels(topLeft, topRight, bottomRight, bottomLeft, divisor);
|
|
|
|
double t;
|
|
__m128i final;
|
|
asm volatile (
|
|
".set push \n\t"
|
|
".set arch=loongson3a \n\t"
|
|
_mm_packsswh(f, r, zero, t)
|
|
_mm_packushb(f, f, zero, t)
|
|
"swc1 %[fl], (%[d]) \n\t"
|
|
".set pop \n\t"
|
|
:[fh]"=&f"(final.h), [fl]"=&f"(final.l),
|
|
[t]"=&f"(t)
|
|
:[d]"r"(data + stride * y + x),
|
|
[rh]"f"(result.h), [rl]"f"(result.l),
|
|
[zeroh]"f"(zero.h), [zerol]"f"(zero.l)
|
|
:"memory"
|
|
);
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
#endif /* _MIPS_ARCH_LOONGSON3A */
|