* [core] Add format override expression and formatted section to evaluation context
* [core] Add textColor to TaggedString's formatted section
* [core] Add FormatSectionOverrides and introduce overridable properties
* [core] Populate symbol layer paint properties for text sections
* [core] Add benchmark for style that uses text-color override
* [core] Add unit test for FormatOverrideExpression
* [core] Add unit test for FormatSectionOverrides
Progams code for a certain layer type is encapsulted within
a dedicated `<layer type>Programs` class, inherited from
the generic base `LayerTypePrograms` class.
`mbgl::Programs::get<layer type>Programs()` lazily initializes the
layer type-specific programs code using pointer to the base class,
which allows LTO to remove this code from binaries (if the corresponding
`get<layer type>Programs()` method can never be invoked).
Before this change, `RenderSymbolLayer` with updated style was trying to render
symbols using the previous bucket (with paint property binders that matched a previous program).
Now, symbol bucket caches the latest corresponding paint properties (caching is happening on
complete tiles only). As a result, `RenderSymbolLayer` always picks the shader program and
its parameters in sync with the obtained bucket.
`LayerManager` is now responsible for `RenderLayer` instances creation,
so that there is a single entry point for creating of objects, which
correspond to a certain layer type.
The `LayerType type` field is dropped from `Layer::Impl`.
Add a parameter to Program::draw to control whether face culling should
be enabled. This will be used in a follow up commit to enable face
culling for fill extrusion layers.
- Remove unused/vestigial 'maxCameraDistance'
- Create a single collision circle for line labels that are less than half the width of a collision circle
GLIBC 2.27 added new versioned symbols of powf and logf, while the double versions of pow and log remained stable.
Prefer the double version to avoid introducing a dependency on a newer version of GLIBC than strictly necessary.
See https://lists.gnu.org/archive/html/info-gnu/2018-02/msg00000.html
port https://github.com/mapbox/mapbox-gl-js/pull/4781
This improves legibility of labels that follow lines in pitched views.
The previous approach used the limited information in the shader to
calculate put the glyph in approximatelyright place. The new approach
does this more accurately by doing it on the cpu where we have access to
the entire line geometry.
Viewport-aligned curved labels start to look very strange in the distance. Until we have a better system for projecting them, just prevent them from showing.
We're storing GeometryTileFeature objects in SymbolLayout, but they may reference data in GeometryTileLayer, which could go away if we don't retain it.
