Basic graphics

[dhardy]

The current focus is kas-rgx:

• minimally-functional / proof of concept
• hardware accelerated via wgpu

See also #10: Pretty graphics

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Renderables include:

• frames
• optional visible separators for grid/row/column layouts
• buttons
• text
• raster images
• vector images

[dhardy]

#185 lands basic support for raster images (rather, one image). Copying the to-do list from there:

• storing multiple images in dynamic atlases
• loading pre-made atlases
• do text atlas caching within kas-wgpu
• draw popups to a separate layer then blend with shadows done (approximately) without a separate layer

Edit: updated.

[dhardy]

#212 landed SVG support and #215 canvas support.

[dhardy]

This leaves only "loading pre-made atlases" unfulfilled. I won't keep a tracker for that; it can be implemented as and when required (if anyone makes a feature request for it, please include an example).