[NOT READY] Basic text rendering

[kkaefer]

No description provided.

[kkaefer]

• Add BinPack class
• Extract glyph images from vector tiles
• Create a glyph atlas texture object that can upload itself to the GPU
• Allow querying the atlas for glyph positions

[incanus]

Just curious: what's the status on this? Where does text rendering fall in the current priority list?

[kkaefer]

Continuing to work in this after #49. In the past couple of days, I focussed on speed.

[kkaefer]

• Find RTree
• Use the real shaders
• Show debug glyph texture
• Port Rotation range code
• Port Interpolate code
• Port Collision code
• Port Placement code
• Add Paint code
• Litter the code with all sorts of assertions