Have a set of ES2 compatible shaders for Pathfinder 3

[makepaddev]

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As WebGL2 appears to be stalled in iOS/OSX Safari for 3 years already, having compatibility with the subset of features available today on apple platform+safari would strengthen wasm-use of path-finder. Of course there is also a large contingent of Android phones without halffloat render targets, so dropping the halffloat rendertarget requirement could also be beneficial.

Quick glance over the shaders came up with:

• can't use ints in shaders
• optionally no half-float texture use (that would really make it fully compatible)

The idea is that pathfinder 3 could be used as a runtime atlas-builder for webGL+Wasm applications.

Good work on Pathfinder3, very impressive renderquality especially with small sizes.

[hujiulong]

Is there any progress?