fix really overscaled lines

We resample lines after sharp corners in some situations. Doing this for
really overscaled tiles mean that sometimes the offset to the new vertex
was closer than the precision supported. This disables that after a
certain point.

fix #9009

asdf

src/data/bucket/line_bucket.js

@@ -250,7 +250,9 @@ class LineBucket implements Bucket {
 
  if (join === 'bevel') miterLimit = 1.05;
 
- const sharpCornerOffset = SHARP_CORNER_OFFSET * (EXTENT / (512 * this.overscaling));
+ const sharpCornerOffset = this.overscaling < 16 ?
+ SHARP_CORNER_OFFSET * EXTENT / (512 * this.overscaling) :
+ 0;
 
  // we could be more precise, but it would only save a negligible amount of space
  const segment = this.segments.prepareSegment(len * 10, this.layoutVertexArray, this.indexArray);

test/integration/render-tests/regressions/mapbox-gl-js#9009/style.json

@@ -0,0 +1,44 @@
+{
+ "version": 8,
+ "metadata": {
+ "test": {
+ "height": 256
+ }
+ },
+ "center": [
+ 0,
+ 0
+ ],
+ "zoom": 18,
+ "sources": {
+ "line": {
+ "type": "geojson",
+ "maxzoom": 10,
+ "data": {
+ "type": "Feature",
+ "geometry": {
+ "type": "LineString",
+ "coordinates": [[-180, 70], [0, 0], [100, 80]]
+ }
+ }
+ }
+ },
+ "layers": [
+ {
+ "id": "background",
+ "type": "background",
+ "paint": {
+ "background-color": "white"
+ }
+ },
+ {
+ "id": "road",
+ "type": "line",
+ "source": "line",
+ "paint": {
+ "line-width": 20,
+ "line-color": "#000"
+ }
+ }
+ ]
+}