lavfi/gradfun: remove rounding to match C and SSE code.

There is no noticable benefit for such precision.
12 years ago · 63e1fc2588
parent 60ba9a9a88
commit 63e1fc2588
1 changed files with 2 additions and 2 deletions
--- a/libavfilter/x86/gradfun.c
+++ b/libavfilter/x86/gradfun.c
@ -136,9 +136,9 @@ static void gradfun_filter_line_ssse3(uint8_t *dst, const uint8_t *src, const ui
        "psubw      %%xmm6, %%xmm2 \n"
        "pminsw     %%xmm7, %%xmm2 \n" // m = -max(0, 127-m)
        "pmullw     %%xmm2, %%xmm2 \n"
-        "psllw          $1, %%xmm2 \n"
+        "psllw          $2, %%xmm1 \n"
        "paddw      %%xmm4, %%xmm0 \n" // pix += dither
-        "pmulhrsw   %%xmm2, %%xmm1 \n" // m = m*m*delta >> 14
+        "pmulhw     %%xmm2, %%xmm1 \n" // m = m*m*delta >> 14
        "paddw      %%xmm1, %%xmm0 \n" // pix += m
        "psraw          $7, %%xmm0 \n"
        "packuswb   %%xmm0, %%xmm0 \n"