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Diffstat (limited to 'include/mbgl/style/source.hpp')
| -rw-r--r-- | include/mbgl/style/source.hpp | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/mbgl/style/source.hpp b/include/mbgl/style/source.hpp index 622c2e42ff..32b15bdf47 100644 --- a/include/mbgl/style/source.hpp +++ b/include/mbgl/style/source.hpp @@ -75,6 +75,20 @@ public: virtual void loadDescription(FileSource&) = 0; void setPrefetchZoomDelta(optional<uint8_t> delta) noexcept; optional<uint8_t> getPrefetchZoomDelta() const noexcept; + + // Sets a limit for how much a parent tile can be overscaled. + // + // When a set of tiles for a current zoom level is being rendered and some of the + // ideal tiles that cover the screen are not yet loaded, parent tile could be + // used instead. This might introduce unwanted rendering side-effects, especially + // for raster tiles that are overscaled multiple times. + // + // For example, an overscale factor of 3 would mean that on zoom level 3, the + // minimum zoom level of a parent tile that could be used in place of an ideal + // tile during rendering would be zoom 0. By default, no limit is set, so any + // parent tile may be used. + void setMaxOverscaleFactorForParentTiles(optional<uint8_t> overscaleFactor) noexcept; + optional<uint8_t> getMaxOverscaleFactorForParentTiles() const noexcept; void dumpDebugLogs() const; virtual bool supportsLayerType(const mbgl::style::LayerTypeInfo*) const = 0; |