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.
[node] Hook up map-wide "crossSourceCollisions" option, defaulting to true.
[test] Pass "crossSourceCollisions" test option through test harness; enable cross-source-collisions tests on native.
Since placements will be committed even if they do not need the full
fade duration to fade features in, we need the new `fadeStartTime` to
keep track of how long we still need to fade. This is important because
if we fade too long we will trigger another placement and never stop
rendering.
- Symbol querying is now global instead of per-tile
- Symbols that bleed over tile boundaries no longer missed in queries
- Symbol results now sorted based on rendering order (ie overlapping symbols change their sort order when a bearing change causes their render order to change)
- Placement::retainedQueryData now responsible for maintaining symbol querying data for buckets that may no longer be in the TilePyramid.
- No longer sends a update message to the render frontend when rendering in still mode only to shortcut it in the renderer. This prevents unneeded render passes in qt.
Android still calls "reduceMemoryUse" only while handling a low memory event.
iOS, on the other hand, calls "reduceMemoryUse" every time it enters the background.
- Background placement code now just generates static symbol buffers
- Don't render GeometryTiles until their symbols are loaded. This is necessary for the CrossTileSymbolIndex to successfully prevent flicker.
- SymbolInstances are transferred to SymbolBucket for use on foreground during collision detection
- Symbols are sorted on foreground by sorting their index buffer but leaving vertex buffers intact (only works within one segment)
- Vertical glyphs are generated at same time as horizontal glyphs. `reprojectLineLabels` chooses which one to use at render time and hides the other.
- Icons are now always represented with a single collision box, even if they're placed along a line (this means their rotation alignment may be wrong, but the approach of representing them with multiple collision boxes wasn't very accurate either).
- Generate vertices for new debug collision boxes and collision circles
- Only add symbols within tile boundaries (reduces work, avoids double-draw)
- Update symbol_projection.cpp to support line label projection calls from CollisionIndex.
Port of https://github.com/mapbox/mapbox-gl-js/pull/5101: adds a new render pass `Pass3D` before any other rendering wherein we render layers with 3D passes (fill-extrusion layers) to offscreen framebuffers, sharing a depth renderbuffer between those layers in order to render 3D space correctly. Those framebuffers are saved on the RenderLayers and copied back to the map during the translucent pass. Rendering to offscreen framebuffers before we do any clear + draw means we can avoid expensive framebuffer restores.
- AnnotationData.updateData() was not completely thread safe. Calling it from the renderer thread instead of the main thread fixes this
- Since we moved the coalescing of updates out of the map and into the renderer frontend implementations, the updateData was called too much, resulting in degraded performance. Moving it into the renderer makes sure it gets coalesced again.
