Global UBO

[alexcristici]

Implemented global UBO, for paint parameters that are same for all shaders.
Optimised shaders UBOs by using the global UBO.

This will reduce the number of UBO binds and it will reduce also the bandwidth between CPU and GPU.

The shaders have the following UBOs:

• paint parameters UBO, it's set at global level and contains parameters that are the same for all shaders.
• evaluated properties UBO, it's set at layer group level and contains the layer properties.
• drawable UBO, it's set at drawable level and contains the matrix and other properties that are drawable dependent.
• interpolate UBO and tile properties UBO are set at drawable level in the render layer.

[github-actions]

Bloaty Results 🐋

Compared to main

    FILE SIZE        VM SIZE    
 --------------  -------------- 
  +0.0% +24.8Ki  +0.0% +10.2Ki    TOTAL

Full report: https://maplibre-native.s3.eu-central-1.amazonaws.com/bloaty-results/pr-2292-compared-to-main.txt

Compared to d387090 (legacy)

    FILE SIZE        VM SIZE    
 --------------  -------------- 
   +20% +23.4Mi  +406% +24.3Mi    TOTAL

Full report: https://maplibre-native.s3.eu-central-1.amazonaws.com/bloaty-results/pr-2292-compared-to-legacy.txt

[github-actions]

Benchmark Results ⚡

Benchmark                                                     Time             CPU      Time Old      Time New       CPU Old       CPU New
------------------------------------------------------------------------------------------------------------------------------------------
OVERALL_GEOMEAN                                            -0.0151         -0.0159             0             0             0             0

Full report: https://maplibre-native.s3.eu-central-1.amazonaws.com/benchmark-results/pr-2292-compared-to-main.txt

[github-actions]

Bloaty Results (iOS) 🐋

Compared to main

    FILE SIZE        VM SIZE    
 --------------  -------------- 
  +0.0%    +216  [ = ]       0    TOTAL

Full report: https://maplibre-native.s3.eu-central-1.amazonaws.com/bloaty-results-ios/pr-2292-compared-to-main.txt

[louwers]

!benchmark android