Implement dynamic texture atlas (#3198)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Bart Louwers <bart@emeel.net>
Co-authored-by: Bart Louwers <bart.louwers@gmail.com>

src/mbgl/renderer/pattern_atlas.cpp

@@ -65,7 +65,9 @@ std::optional<ImagePosition> PatternAtlas::addPattern(const style::Image::Impl&
 
     dirty = true;
 
-    return patterns.emplace(image.id, Pattern{.bin = bin, .position = {*bin, image}}).first->second.position;
+    return patterns
+        .emplace(image.id, Pattern{.bin = bin, .position = {Rect<uint16_t>(bin->x, bin->y, bin->w, bin->h), image}})
+        .first->second.position;
 }
 
 void PatternAtlas::removePattern(const std::string& id) {