[FFmpeg-trac] #2394(swscale:new): BGRA downscaling shift colors

[FFmpeg]

#2394: BGRA downscaling shift colors
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             Reporter:  Cigaes      |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  swscale
              Version:  git-master  |               Resolution:
             Keywords:  bgra        |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
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Comment (by Cigaes):

 Extra info: {{{--disable-asm}}} makes the problem go away. Config
 differences when asm is enabled:
 {{{
 +#define ARCH_X86 1
 +#define ARCH_X86_64 1
 +#define HAVE_AMD3DNOW 1
 +#define HAVE_AMD3DNOWEXT 1
 +#define HAVE_AVX 1
 +#define HAVE_FMA4 1
 +#define HAVE_MMX 1
 +#define HAVE_MMXEXT 1
 +#define HAVE_SSE 1
 +#define HAVE_SSE2 1
 +#define HAVE_SSE3 1
 +#define HAVE_SSE4 1
 +#define HAVE_SSE42 1
 +#define HAVE_SSSE3 1
 +#define HAVE_AMD3DNOW_EXTERNAL 1
 +#define HAVE_AMD3DNOWEXT_EXTERNAL 1
 +#define HAVE_AVX_EXTERNAL 1
 +#define HAVE_FMA4_EXTERNAL 1
 +#define HAVE_MMX_EXTERNAL 1
 +#define HAVE_MMXEXT_EXTERNAL 1
 +#define HAVE_SSE_EXTERNAL 1
 +#define HAVE_SSE2_EXTERNAL 1
 +#define HAVE_SSE3_EXTERNAL 1
 +#define HAVE_SSE4_EXTERNAL 1
 +#define HAVE_SSE42_EXTERNAL 1
 +#define HAVE_SSSE3_EXTERNAL 1
 +#define HAVE_AMD3DNOW_INLINE 1
 +#define HAVE_AMD3DNOWEXT_INLINE 1
 +#define HAVE_AVX_INLINE 1
 +#define HAVE_FMA4_INLINE 1
 +#define HAVE_MMX_INLINE 1
 +#define HAVE_MMXEXT_INLINE 1
 +#define HAVE_SSE_INLINE 1
 +#define HAVE_SSE2_INLINE 1
 +#define HAVE_SSE3_INLINE 1
 +#define HAVE_SSE4_INLINE 1
 +#define HAVE_SSE42_INLINE 1
 +#define HAVE_SSSE3_INLINE 1
 +#define HAVE_YASM 1
 +#define HAVE_FAST_UNALIGNED 1
 +#define HAVE_ALIGNED_STACK 1
 +#define HAVE_CMOV 1
 +#define HAVE_CPUNOP 1
 +#define HAVE_FAST_64BIT 1
 +#define HAVE_FAST_CLZ 1
 +#define HAVE_FAST_CMOV 1
 +#define HAVE_GNU_AS 1
 +#define CONFIG_FAST_UNALIGNED 1
 }}}

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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2394#comment:1>
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