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| author | Robin Watts <robin.watts@artifex.com> | 2016-10-06 17:45:47 +0100 |
|---|---|---|
| committer | Robin Watts <robin.watts@artifex.com> | 2016-10-07 16:56:46 +0100 |
| commit | 7836643e0d6e9cc8e9d0d5c71cbfac5ee772ae21 (patch) | |
| tree | a6cda5f755c09c25c4c78264e029f9e52b263bd4 /source/fitz/draw-paint.c | |
| parent | a9543691208e92c4ff8f7d1ff39d95543b557c60 (diff) | |
| download | mupdf-7836643e0d6e9cc8e9d0d5c71cbfac5ee772ae21.tar.xz | |
Optimise painters: Use SWAR to accelerate plotting.
Used for the file from bug 697122. Makes a small improvement
overall. (31.3s to 31s for a cutdown file).
The equivalent code using 64bit operations is slower.
Diffstat (limited to 'source/fitz/draw-paint.c')
| -rw-r--r-- | source/fitz/draw-paint.c | 45 |
1 files changed, 34 insertions, 11 deletions
diff --git a/source/fitz/draw-paint.c b/source/fitz/draw-paint.c index 061ee630..50112d00 100644 --- a/source/fitz/draw-paint.c +++ b/source/fitz/draw-paint.c @@ -950,19 +950,42 @@ template_span_with_mask_3_general(byte * restrict dp, int da, const byte * restr else { masa = FZ_EXPAND(masa); - *dp = *sp + FZ_COMBINE(*dp, masa); - sp++; dp++; - *dp = *sp + FZ_COMBINE(*dp, masa); - sp++; dp++; - *dp = *sp + FZ_COMBINE(*dp, masa); - sp++; dp++; - if (da) + if (da && sa) { - *dp = (sa ? *sp : 255) + FZ_COMBINE(*dp, masa); - dp++; + const uint32_t mask = 0x00ff00ff; + uint32_t d0 = *(uint32_t *)dp; + uint32_t d1 = d0>>8; + uint32_t s0 = *(uint32_t *)sp; + uint32_t s1 = s0>>8; + sp += 4; + d0 &= mask; + d1 &= mask; + s0 &= mask; + s1 &= mask; + s0 += (d0*masa)>>8; + s1 += (d1*masa)>>8; + s0 &= mask; + s1 &= mask; + s0 |= s1<<8; + *(uint32_t *)dp = s0; + dp += 4; + } + else + { + *dp = *sp + FZ_COMBINE(*dp, masa); + sp++; dp++; + *dp = *sp + FZ_COMBINE(*dp, masa); + sp++; dp++; + *dp = *sp + FZ_COMBINE(*dp, masa); + sp++; dp++; + if (da) + { + *dp = (sa ? *sp : 255) + FZ_COMBINE(*dp, masa); + dp++; + } + if (sa) + sp++; } - if (sa) - sp++; } } else |