vo_gpu-next: Compatibility with shaders

[hooke007]

Important Information

Provide following Information:

• mpv version
  a73e5cd

• Windows Version
  win11 release

• Source of the mpv binary
  built based on shinchiro

• If known which version of mpv introduced the problem

• Possible screenshot or video of visual glitches
  

Reproduction steps

open the video and apply any shader.

Expected behavior

No error or no crash.

Actual behavior

ravu-zoom -- error in the console
adaptive-sharpen , SSim -- crash
nnedi3-nns64-win8x4 -- the chroma plane is terrible while luma plane was stretched.

Also, once ravu caused the error firstly (as u can c in the picture), and then any shaders could not be actived at runtime.

Log file

ravu-zoom-r3.log
adaptive-sharpen.log

Sample files

ravu-zoom https://github.com/bjin/mpv-prescalers/blob/master/vulkan/compute/ravu-zoom-r3.hook
nnedi3 https://github.com/bjin/mpv-prescalers/blob/master/compute/nnedi3-nns64-win8x4.hook
adaptive and ssim https://gist.github.com/igv

[haasn]

ravu-zoom -- error in the console

This one is a ravu bug. It uses the (undocumented) function LUT_POS which is not part of the mpv shader API. You can fix it by adding this to the shader:

#define LUT_POS(x, lut_size) mix(0.5 / (lut_size), 1.0 - 0.5 / (lut_size), (x))

[haasn]

adaptive-sharpen , SSim -- crash

Fixed the crash in haasn/libplacebo@08456a11b306ad

[haasn]

nnedi3-nns64-win8x4 -- the chroma plane is terrible while luma plane was stretched.s

Can you open a new issue for this? (And in future, one issue per different type of bug)

[hooke007]

Can you open a new issue for this?

#9395