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ffmpeg.wasm-core
Commit 49de902a authored by Clément Bœsch's avatar Clément Bœsch
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lavfi/gradfun: fix rounding in MMX code. 

Current code divide before increasing precision.
parent dd8a76ab
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libavfilter/x86/gradfun.c
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...@@ -62,8 +62,8 @@ static void gradfun_filter_line_mmxext(uint8_t *dst, const uint8_t *src, const u ...@@ -62,8 +62,8 @@ static void gradfun_filter_line_mmxext(uint8_t *dst, const uint8_t *src, const u
"pminsw %%mm7, %%mm2 \n" // m = -max(0, 127-m) "pminsw %%mm7, %%mm2 \n" // m = -max(0, 127-m)
"pmullw %%mm2, %%mm2 \n" "pmullw %%mm2, %%mm2 \n"
"paddw %%mm4, %%mm0 \n" // pix += dither "paddw %%mm4, %%mm0 \n" // pix += dither
"pmulhw %%mm2, %%mm1 \n"
"psllw $2, %%mm1 \n" // m = m*m*delta >> 14 "psllw $2, %%mm1 \n" // m = m*m*delta >> 14
"pmulhw %%mm2, %%mm1 \n"
"paddw %%mm1, %%mm0 \n" // pix += m "paddw %%mm1, %%mm0 \n" // pix += m
"psraw $7, %%mm0 \n" "psraw $7, %%mm0 \n"
"packuswb %%mm0, %%mm0 \n" "packuswb %%mm0, %%mm0 \n"
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