Bug: TiltShiftFilter coordinates are calculated incorrectly

[amoffat]

Fixes #470

[amoffat]

Demo

2024-12-29.22-48-46.mp4

[bigtimebuddy]

Thanks for the PR @amoffat. I'm still getting popping when resizing the filter.

• We probably want something like Twist filters map/unmapCoord: https://github.com/pixijs/filters/blob/main/src/twist/twist.frag#L10-L24
• This change also needs to be added on the wgsl shader too.

[GoodBoyDigital]

👍

[amoffat]

Thanks for the PR @amoffat. I'm still getting popping when resizing the filter.

• We probably want something like Twist filters map/unmapCoord: https://github.com/pixijs/filters/blob/main/src/twist/twist.frag#L10-L24
• This change also needs to be added on the wgsl shader too.

Ok will take a look

[amoffat]

@bigtimebuddy Ok I've fixed the popping issue and ported the fix to wgsl, but I can't test the wgsl fix on my machine.

[bigtimebuddy]

Thank you @amoffat I will verify the wgsl side