…lighting only stubbed

… be grouped)

…ed to fix depth testing, properly setting up renderbuffer, etc

…tripes 😭

…ated fill-extrusion-opacity

* Fix extrusion texture paint properties argument so as not to attempt to use a non-uploaded buffer
* TEMP/TODO: workaround for style deleting needed tiles in RenderData rework

* These may be more complicated than necessary -- will now try to whittle down

…implementation-specific depth resolutions (fixes stripes/zigzags)

…s after rebase

* GLES ES2 supports only GL_DEPTH_COMPONENT16 as a valid RenderbufferStorage internalformat (though GLES ES3 will support 16, 24 and 32F)
* OpenGL supports GL_DEPTH_COMPONENT, which determines its own size as needed. This is necessary as 16 bits seems to not be high enough resolution for desktop implementations

…r rebase

* Split Position conversion into its own file
* Add light transition parsing + tests

Refactor UnevaluatedPaintProperty + UnevaluatedLightProperty into a separate reusable header, TransitioningProperty

* Move mbgl/util/position -> mbgl/style/position

* Clean up position.hpp

* Remove color renderbuffer from offscreen texture (+ RGBA4 format addition)
* Move gl::TextureUnit argument from OffscreenTexture constructor to bindRenderbuffers

* Formatting + programs cleanup

* Program cleanup
* Rename tileTriangleIndexBuffer to quadTriangleIndexBuffer so as to generalize for reuse + remove extrusionTextureTriangleIndexBuffer

* Use Light::Evaluated to initialize FillExtrusionUniforms + FillExtrusionPatternUniforms
* painter_fill_extrusion.cpp reindentation

* Turn unnecessary lambda fns into regular fns in position.test.cpp

Deleted a copy of MGLFillExtrusionStyleLayerTests.mm that was orphaned in platform/ios/test/. Added the real, auto-generated copy to the iOS project. Added all the files associated with fill extrusion style layers to the macOS project.

Imported MGLFillExtrusionStyleLayer.h into the umbrella header and MGLStyle.mm. Train-cased an mbgl file name.

Added a code example to MGLFillExtrusionStyleLayer to unbreak the darwin-style-code make target.

Mentioned 3D extrusion in the changelogs.

* Simplify CascadingLightProperty and rename (nothing cascades)

* Reintroduce cascade params + rework light
* TODO: rename cascade->? (raw?); potentially add proper value/transition setters/getters

* Add Map#setLight
* Add TransitioningLight#hasTransition for transitionable light

* Add Map#getLight
* Don't rename Transitioning (fix compiling error)

* Update mapbox-gl-js
  * According platform-specific generated code updates
* Update test/style/conversion/light.test.cpp based on Light refactor

* cmake + shaders prelude missed in last rebase commit (?)
* tweak tile_cover.test.cpp tile order to account for transform_state changes

…eline, copy evaluatedLight to Painter

…s if 24-bit depth component isn't supported

* Simplify: use DEPTH_COMPONENT24 as DepthComponent and remove DepthComponent24, as we'll never use DEPTH_COMPONENT16

… of the field; give up on 24-bit dreams

…ill-extrusion layer with a further near clip plane, and leave the global projection matrix alone

…ssor conditional in types.hpp) in all cases

… avoid setting and re-setting matrix