Encode image fails with webp format on scale > 2

[ItsABlackScreen]

Image


./waifu2x-ncnn-vulkan -i "001.jpg" -o "test_scale.webp" -n 3 -s 4

[0 llvmpipe (LLVM 13.0.0, 256 bits)]  queueC=0[1]  queueG=0[1]  queueT=0[1]
[0 llvmpipe (LLVM 13.0.0, 256 bits)]  bugsbn1=0  bugbilz=116  bugcopc=0  bugihfa=0
[0 llvmpipe (LLVM 13.0.0, 256 bits)]  fp16-p/s/a=1/1/1  int8-p/s/a=1/1/1
[0 llvmpipe (LLVM 13.0.0, 256 bits)]  subgroup=8  basic=1  vote=1  ballot=1  shuffle=0
[1 AMD RADV RENOIR]  queueC=1[4]  queueG=0[1]  queueT=0[1]
[1 AMD RADV RENOIR]  bugsbn1=0  bugbilz=0  bugcopc=0  bugihfa=0
[1 AMD RADV RENOIR]  fp16-p/s/a=1/1/1  int8-p/s/a=1/1/1
[1 AMD RADV RENOIR]  subgroup=64  basic=1  vote=1  ballot=1  shuffle=1
[2 NVIDIA GeForce RTX 3060 Laptop GPU]  queueC=2[8]  queueG=0[16]  queueT=1[2]
[2 NVIDIA GeForce RTX 3060 Laptop GPU]  bugsbn1=0  bugbilz=0  bugcopc=0  bugihfa=0
[2 NVIDIA GeForce RTX 3060 Laptop GPU]  fp16-p/s/a=1/1/1  int8-p/s/a=1/1/1
[2 NVIDIA GeForce RTX 3060 Laptop GPU]  subgroup=32  basic=1  vote=1  ballot=1  shuffle=1
encode image test_scale.webp failed

Issue

• Format webp on scale > 2 fails with "encode image failed"

Version : Release 20220728

[tested on]

• Fedora 35
• Windows 10
  Fails on both at scale > 2.

Encode image fails on long images when format is set to webp. It works fine on scale 2 but on anything greater it fails with a "encode image path/to/img.webp failed." webp scale > 2 works fine on many images, but fails consistently on these long comic type images.

[ItsABlackScreen]

Never mind found out that webp has quiet small image dimension limitations, 16383 x 16383, and thus was failing at higher scales. Closing as not a bug.