scale_vulkan filter produces wrong colors

[bermond]

Applying the scale_vulkan filter produces an output with blueish/greenish color tint.

How to reproduce:

$ ffmpeg \
  -init_hw_device vulkan=hw:0 -filter_hw_device hw \
  -f lavfi -i 'color=color=White:size=1280x720' \
  -vf 'hwupload,scale_vulkan=w=640:h=480,hwdownload,format=yuv420p' \
  -c:v libx264 -preset:v ultrafast -movflags '+faststart' -t 40 -y test-out.mp4
ffmpeg version N-113734-gcffadfe99a Copyright (c) 2000-2024 the FFmpeg developers
  built with gcc 13.2.1 (GCC) 20230801
  configuration: --prefix=/usr --extra-cflags=-I/opt/cuda/include --extra-ldflags=-L/opt/cuda/lib64 --enable-lto --disable-rpath --enable-gpl --enable-version3 --enable-nonfree --enable-shared --disable-static --disable-stripping --disable-htmlpages --enable-gray --enable-alsa --enable-avisynth --enable-bzlib --enable-chromaprint --enable-frei0r --enable-gcrypt --enable-gmp --enable-gnutls --enable-iconv --enable-ladspa --enable-lcms2 --enable-libaom --enable-libaribb24 --enable-libaribcaption --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcelt --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libdavs2 --enable-libdc1394 --enable-libfdk-aac --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libharfbuzz --enable-libglslang --enable-libgme --enable-libgsm --enable-libiec61883 --enable-libilbc --enable-libjack --enable-libjxl --enable-libklvanc --enable-libkvazaar --enable-liblensfun --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopencv --enable-libopenh264 --enable-libopenjpeg --enable-libopenmpt --enable-libopenvino --enable-libopus --enable-libplacebo --enable-libpulse --enable-libqrencode --enable-librabbitmq --enable-librav1e --enable-librist --enable-librsvg --enable-librubberband --enable-librtmp --disable-libshaderc --enable-libshine --enable-libsmbclient --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libsvthevc --enable-libsvtvp9 --disable-libtensorflow --enable-libtesseract --enable-libtheora --disable-libtls --enable-libtwolame --enable-libuavs3d --enable-libv4l2 --enable-libvidstab --enable-libvmaf --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxevd --enable-libxeve --enable-libxavs --enable-libxavs2 --enable-libxcb --enable-libxcb-shm --enable-libxcb-xfixes --enable-libxcb-shape --enable-libxvid --enable-libxml2 --enable-libzimg --enable-libzmq --enable-libzvbi --enable-lv2 --enable-lzma --enable-decklink --disable-mbedtls --enable-libmysofa --enable-openal --enable-opencl --enable-opengl --disable-openssl --disable-pocketsphinx --enable-sndio --enable-sdl2 --enable-vapoursynth --enable-vulkan --enable-xlib --enable-zlib --enable-amf --enable-cuda-nvcc --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-libdrm --enable-libvpl --enable-libnpp --enable-nvdec --enable-nvenc --enable-omx --enable-rkmpp --enable-v4l2-m2m --enable-vaapi --enable-vdpau
  libavutil      58. 39.100 / 58. 39.100
  libavcodec     60. 39.101 / 60. 39.101
  libavformat    60. 21.101 / 60. 21.101
  libavdevice    60.  4.100 / 60.  4.100
  libavfilter     9. 17.100 /  9. 17.100
  libswscale      7.  6.100 /  7.  6.100
  libswresample   4. 13.100 /  4. 13.100
  libpostproc    57.  4.100 / 57.  4.100
Input #0, lavfi, from 'color=color=White:size=1280x720':
  Duration: N/A, start: 0.000000, bitrate: N/A
  Stream #0:0: Video: wrapped_avframe, yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 25 tbn
Stream mapping:
  Stream #0:0 -> #0:0 (wrapped_avframe (native) -> h264 (libx264))
Press [q] to stop, [?] for help
[libx264 @ 0x58048fbc3b80] using SAR=1/1
[libx264 @ 0x58048fbc3b80] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0x58048fbc3b80] profile Constrained Baseline, level 3.0, 4:2:0, 8-bit
[libx264 @ 0x58048fbc3b80] 264 - core 164 r3108 31e19f9 - H.264/MPEG-4 AVC codec - Copyleft 2003-2023 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=0:0:0 analyse=0:0 me=dia subme=0 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=15 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25 scenecut=0 intra_refresh=0 rc=crf mbtree=0 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=0
Output #0, mp4, to 'test-out.mp4':
  Metadata:
    encoder         : Lavf60.21.101
  Stream #0:0: Video: h264 (avc1 / 0x31637661), yuv420p(progressive), 640x480 [SAR 1:1 DAR 4:3], q=2-31, 25 fps, 12800 tbn
      Metadata:
        encoder         : Lavc60.39.101 libx264
      Side data:
        cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
[mp4 @ 0x58048f89cac0] Starting second pass: moving the moov atom to the beginning of the file    
[out#0/mp4 @ 0x58048f9a9f80] video:15KiB audio:0KiB subtitle:0KiB other streams:0KiB global headers:0KiB muxing overhead: 31.864029%
frame= 1000 fps=0.0 q=-1.0 Lsize=      20KiB time=00:00:40.00 bitrate=   4.0kbits/s speed=57.8x    
[libx264 @ 0x58048fbc3b80] frame I:4     Avg QP:11.75  size:   928
[libx264 @ 0x58048fbc3b80] frame P:996   Avg QP:12.01  size:    11
[libx264 @ 0x58048fbc3b80] mb I  I16..4: 100.0%  0.0%  0.0%
[libx264 @ 0x58048fbc3b80] mb P  I16..4:  0.0%  0.0%  0.0%  P16..4:  0.0%  0.0%  0.0%  0.0%  0.0%    skip:100.0%
[libx264 @ 0x58048fbc3b80] coded y,uvDC,uvAC intra: 0.0% 0.1% 0.0% inter: 0.0% 0.0% 0.0%
[libx264 @ 0x58048fbc3b80] i16 v,h,dc,p: 97%  0%  3%  0%
[libx264 @ 0x58048fbc3b80] i8c dc,h,v,p: 100%  0%  0%  0%
[libx264 @ 0x58048fbc3b80] kb/s:2.93

Instead of having a solid white output in the example above, the color is wrong.

All other hardware accelerated scale filters (scale_cuda, scale_npp, scale_qsv and scale_vaapi) does not produce this behavior.

System Information:

• OS: Arch Linux
• Vulkan device: NVIDIA RTX 3060
• GPU driver: NVIDIA proprietary driver version 545.29.06