Fix "scale" and "textPixelRatio" calculations -- both of them need to include overscaling factor, instead of neither.

1 files changed, 2 insertions, 3 deletions

diff --git a/src/mbgl/text/placement.cpp b/src/mbgl/text/placement.cpp
index 9e133cb1ef..399243f363 100644
--- a/src/mbgl/text/placement.cpp
+++ b/src/mbgl/text/placement.cpp
@@ -54,9 +54,8 @@ void Placement::placeLayer(RenderSymbolLayer& symbolLayer, const mat4& projMatri
 
         const float pixelsToTileUnits = renderTile.id.pixelsToTileUnits(1, state.getZoom());
 
-        const float scale = std::pow(2, state.getZoom() - renderTile.id.canonical.z);
-
-        const float textPixelRatio = util::EXTENT / util::tileSize;
+        const float scale = std::pow(2, state.getZoom() - renderTile.tile.id.overscaledZ);
+        const float textPixelRatio = util::EXTENT / (util::tileSize * renderTile.tile.id.overscaleFactor());
 
         mat4 posMatrix;
         state.matrixFor(posMatrix, renderTile.id);