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skip rendering layer when min/max-zoom condition isn't met

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This commit is contained in:
Konstantin Käfer
2014-07-17 16:04:17 -07:00
parent 1e20959a00
commit ab045087da
1 changed files with 14 additions and 3 deletions
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17
src/map/map.cpp
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@@ -653,6 +653,19 @@ void Map::renderLayer(std::shared_ptr<StyleLayer> layer_desc, RenderPass pass) {
StyleSource &style_source = *layer_desc->bucket->style_source;
// Skip this layer if there is no data.
if (!style_source.source) {
return;
}
// Skip this layer if it's outside the range of min/maxzoom.
// This may occur when there /is/ a bucket created for this layer, but the min/max-zoom
// is set to a fractional value, or value that is larger than the source maxzoom.
if (style_source.info.min_zoom > state.getZoom() ||
style_source.info.max_zoom <= state.getZoom()) {
return;
}
// Abort early if we can already deduce from the bucket type that
// we're not going to render anything anyway during this pass.
switch (layer_desc->type) {
@@ -684,8 +697,6 @@ void Map::renderLayer(std::shared_ptr<StyleLayer> layer_desc, RenderPass pass) {
<< layer_desc->type << ")" << std::endl;
}
if (style_source.source) {
style_source.source->render(painter, layer_desc);
}
style_source.source->render(painter, layer_desc);
}
}