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| author | Robin Watts <Robin.Watts@artifex.com> | 2013-08-22 12:13:49 +0000 |
|---|---|---|
| committer | Robin Watts <robin.watts@artifex.com> | 2013-08-26 14:59:38 +0100 |
| commit | 34dfe07760e3d8547fa180e9ce3b3c639051b99d (patch) | |
| tree | 77c247c91c0a4bfdb37bae5b5761d2fcd2beba36 /source/fitz/draw-paint.c | |
| parent | aad6698ce2367d6db4336f20c93c804996f10253 (diff) | |
| download | mupdf-34dfe07760e3d8547fa180e9ce3b3c639051b99d.tar.xz | |
Optimise fz_paint_scan_with_color and fz_paint_span
Diffstat (limited to 'source/fitz/draw-paint.c')
| -rw-r--r-- | source/fitz/draw-paint.c | 133 |
1 files changed, 108 insertions, 25 deletions
diff --git a/source/fitz/draw-paint.c b/source/fitz/draw-paint.c index 6eaa0a5f..e8110a1d 100644 --- a/source/fitz/draw-paint.c +++ b/source/fitz/draw-paint.c @@ -196,13 +196,45 @@ fz_paint_span_with_color_2(byte * restrict dp, byte * restrict mp, int w, byte * { int sa = FZ_EXPAND(color[1]); int g = color[0]; - while (w--) + if (sa == 256) { - int ma = *mp++; - ma = FZ_COMBINE(FZ_EXPAND(ma), sa); - dp[0] = FZ_BLEND(g, dp[0], ma); - dp[1] = FZ_BLEND(255, dp[1], ma); - dp += 2; + while (w--) + { + int ma = *mp++; + ma = FZ_EXPAND(ma); + if (ma == 0) + { + } + else if (ma == 256) + { + dp[0] = g; + dp[1] = 255; + } + else + { + dp[0] = FZ_BLEND(g, dp[0], ma); + dp[1] = FZ_BLEND(255, dp[1], ma); + } + dp += 2; + } + } + else + { + while (w--) + { + int ma = *mp++; + ma = FZ_EXPAND(ma); + if (ma == 0) + { + } + else + { + ma = FZ_COMBINE(ma, sa); + dp[0] = FZ_BLEND(g, dp[0], ma); + dp[1] = FZ_BLEND(255, dp[1], ma); + } + dp += 2; + } } } @@ -550,11 +582,27 @@ fz_paint_span_2(byte * restrict dp, byte * restrict sp, int w) { while (w--) { - int t = FZ_EXPAND(255 - sp[1]); - *dp = *sp++ + FZ_COMBINE(*dp, t); - dp++; - *dp = *sp++ + FZ_COMBINE(*dp, t); - dp++; + int t = FZ_EXPAND(sp[1]); + if (t == 0) + { + dp += 2; sp += 2; + } + else + { + t = 256 - t; + if (t == 0) + { + *dp++ = *sp++; + *dp++ = *sp++; + } + else + { + *dp = *sp++ + FZ_COMBINE(*dp, t); + dp++; + *dp = *sp++ + FZ_COMBINE(*dp, t); + dp++; + } + } } } @@ -563,15 +611,31 @@ fz_paint_span_4(byte * restrict dp, byte * restrict sp, int w) { while (w--) { - int t = FZ_EXPAND(255 - sp[3]); - *dp = *sp++ + FZ_COMBINE(*dp, t); - dp++; - *dp = *sp++ + FZ_COMBINE(*dp, t); - dp++; - *dp = *sp++ + FZ_COMBINE(*dp, t); - dp++; - *dp = *sp++ + FZ_COMBINE(*dp, t); - dp++; + int t = FZ_EXPAND(sp[3]); + if (t == 0) + { + dp += 4; sp += 4; + } + else + { + t = 256 - t; + if (t == 0) + { + *(int *)dp = *(int *)sp; + dp += 4; sp += 4; + } + else + { + *dp = *sp++ + FZ_COMBINE(*dp, t); + dp++; + *dp = *sp++ + FZ_COMBINE(*dp, t); + dp++; + *dp = *sp++ + FZ_COMBINE(*dp, t); + dp++; + *dp = *sp++ + FZ_COMBINE(*dp, t); + dp++; + } + } } } @@ -580,12 +644,31 @@ fz_paint_span_N(byte * restrict dp, byte * restrict sp, int n, int w) { while (w--) { - int k = n; - int t = FZ_EXPAND(255 - sp[n-1]); - while (k--) + int t = FZ_EXPAND(sp[n-1]); + if (t == 0) { - *dp = *sp++ + FZ_COMBINE(*dp, t); - dp++; + dp += n; sp += n; + } + else + { + t = 256 - t; + if (t == 0) + { + int k = n; + while (k--) + { + *dp++ = *sp++; + } + } + else + { + int k = n; + while (k--) + { + *dp = *sp++ + FZ_COMBINE(*dp, t); + dp++; + } + } } } } |