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| author | Glenn Kennard <glenn.kennard@gmail.com> | 2008-03-22 13:30:41 +0100 |
|---|---|---|
| committer | Glenn Kennard <glenn.kennard@gmail.com> | 2008-03-22 13:30:41 +0100 |
| commit | 7a7b5bd30c973d3705df1ddcef95cb386a6a924a (patch) | |
| tree | a221c95980439c3881aca2b7cf0d0945ce202bcb | |
| parent | 15d836f1e88c9aa2b993f95f95b3bed2a0548ba1 (diff) | |
| download | mupdf-7a7b5bd30c973d3705df1ddcef95cb386a6a924a.tar.xz | |
Fix mmx lerping the wrong direction horizontally.
| -rw-r--r-- | raster/archx86.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/raster/archx86.c b/raster/archx86.c index f797d44b..2a4509a8 100644 --- a/raster/archx86.c +++ b/raster/archx86.c @@ -90,9 +90,9 @@ static void img_4o4mmx(FZ_PSRC, FZ_PDST, FZ_PCTM) { /* since mmx does not have an unsigned multiply instruction we use 17.15 fixed point */ - u0 <<= 1; v0 <<= 1; - fa <<= 1; fb <<= 1; - fc <<= 1; fd <<= 1; + u0 >>= 1; v0 >>= 1; + fa >>= 1; fb >>= 1; + fc >>= 1; fd >>= 1; while (h--) { @@ -108,8 +108,8 @@ static void img_4o4mmx(FZ_PSRC, FZ_PDST, FZ_PCTM) while (w--) { - int iu = u >> 17; - int iv = v >> 17; + int iu = u >> 15; + int iv = v >> 15; int fu = u & 0x7fff; int fv = v & 0x7fff; @@ -146,10 +146,10 @@ static void img_4o4mmx(FZ_PSRC, FZ_PDST, FZ_PCTM) } /* unpack src into 4x16bit vectors */ - __m64 ms0 = _mm_unpackhi_pi8(ms0s1, mzero); - __m64 ms1 = _mm_unpacklo_pi8(ms0s1, mzero); - __m64 ms2 = _mm_unpackhi_pi8(ms2s3, mzero); - __m64 ms3 = _mm_unpacklo_pi8(ms2s3, mzero); + __m64 ms0 = _mm_unpacklo_pi8(ms0s1, mzero); + __m64 ms1 = _mm_unpackhi_pi8(ms0s1, mzero); + __m64 ms2 = _mm_unpacklo_pi8(ms2s3, mzero); + __m64 ms3 = _mm_unpackhi_pi8(ms2s3, mzero); /* lerp fu */ |