[Migrated] Ported shadertoy shader runs very slow (fractal pyramid)

[rust-gpu-bot]

Issue automatically imported from old repo: EmbarkStudios/rust-gpu#1106
Old labels: t: bug
Originally creatd by LegNeato on 2023-12-06T03:16:14Z

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I ported the shadertoy shader from https://www.shadertoy.com/view/tsXBzS to rust-gpu (code at https://github.com/LegNeato/rust-gpu/tree/fractal). When I run it, shadertoy on the web is way faster than rustgpu + wgpu locally, even with a small window.

This is the command I am running:

cargo run --release --bin wgpu_runner -- -s FractalPyramid

I'm on a MacBook Pro with an M1 Pro on macOS 13.5.2.