Support MaskExtension with HeatmapLayer

[felixpalmer]

For #7184

Background

Screen.Recording.2022-11-10.at.14.12.13.mov

Due to the aggregation the mask extension wasn't working with the HeatmapLayer. This PoC works well, but it doesn't fit cleanly with the deck architecture. @Pessimistress could you give some input on:

• How to cleanly access the EffectManager in AggregationLayer.getModuleParameters
• How best to get the weightsTransform to execute after the mask is rendered. I couldn't find a way without adding the postEffect hook

Change List

• Provide correct uniforms to shaders in weightsTransform & TriangleLayer
• Update shaders to work with extension

TODO

• Agree on how to cleanly integrate
• Revert changes to test app
• Render tests

[Pessimistress]

Layers should not have any knowledge of a particular extension. I believe that the transform (which generates the heatmap texture) is already created with the shader of the MaskExtension. The issue is that when the layer updates its module settings, parameters are only sent to the model that draws to screen, bypassing the transform.

[felixpalmer]

@Pessimistress

Layers should not have any knowledge of a particular extension.

This is difficult as the HeatmapLayer needs to behave differently depending on the value of maskByInstance. How can this be handled more cleanly?

The issue is that when the layer updates its module settings, parameters are only sent to the model that draws to screen, bypassing the transform.

I don't follow here, I'm not sure what change you want me to make

[andresramosp]

Hello, this is still in progress? any estimation of release? Thanks.

[andresramosp]

Hello, sorry for asking again, is there any forecast to release this fix? In my company we need to mask the heatmap layer at port level very accurately and it would be nice to know if we can count on it or look for another solution. Thanks!