fix: change WebGL pointsize buffer type from HALF_FLOAT to FLOAT

[jwindhager]

... to match Float32Array

(Float16Array is only supported from ECMAScript 2025 onwards)

[jwindhager]

Thanks @cavenel for reporting this bug!

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (5976c9e) to head (c74d00d).
⚠️ Report is 12 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##            main       #50       +/-   ##
===========================================
+ Coverage   4.41%   100.00%   +95.58%     
===========================================
  Files         77         5       -72     
  Lines       4324        71     -4253     
  Branches     112        17       -95     
===========================================
- Hits         191        71      -120     
+ Misses      4098         0     -4098     
+ Partials      35         0       -35     

Flag	Coverage Δ
unittests	100.00% <ø> (+95.58%)	⬆️

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[Copilot]

Pull request overview

This PR fixes a WebGL buffer type mismatch in the point size buffer configuration. The buffer was incorrectly configured to use HALF_FLOAT type while the actual data being loaded is Float32Array, causing a type incompatibility. Since Float16Array is only supported from ECMAScript 2025 onwards, the buffer type must be FLOAT to match the Float32Array data.

Changes:

• Changed the WebGL buffer type for the point size attribute from HALF_FLOAT to FLOAT to match the Float32Array data type

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