Update on the Slug algorithm Open Source implementation: I absorbed GLyphy into a new HarfBuzz module called hb-gpu.
Check out the web demo. Interact with it with the mouse. Or press space to animation rotation:
https://behdad.org/hb-gpu-demo
Discuss hb-gpu at:
Great news today for GPU-accelerated text rendering:
"""
I was granted a patent for the Slug algorithm in 2019, and I legally have exclusive rights to it until the year 2038. But I think that’s too long. The patent has already served its purpose well, and I believe that holding on to it any longer benefits nobody. Therefore, effective today, I am permanently and irrevocably dedicating the Slug patent to the public domain. ...
To aid in implementations of the Slug algorithm, reference vertex and pixel shaders based on the actual code used in the Slug Library have been posted in a new GitHub repository and made available under the MIT license. ...
"""
Thank you, @EricLengyel!
I bought a Seagate Exos X24 hard disk drive. First test gave these numbers:
Write one 80 GiB file (85135469091 bytes): 4min 36s -> 294 MiB / sec
Read one 80 GiB file (85135469091 bytes): 5min 31s -> 245 MiB / sec
Getting the parent tile of child_x, child_y, child_z at zoom parent_z in JavaScript can be done like this:
parent_x = child_x >> (parent_z - child_z)
parent_y = child_y >> (parent_z - child_z)
behdad
Mapterhorn
o lаvrоvsky