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#pragma once
#include <mbgl/util/noncopyable.hpp>
#include <mbgl/tile/geometry_tile_data.hpp>
#include <mbgl/style/layer_type.hpp>
#include <mbgl/style/image_impl.hpp>
#include <mbgl/renderer/image_atlas.hpp>
#include <atomic>
namespace mbgl {
namespace gl {
class Context;
} // namespace gl
class RenderLayer;
class PatternDependency;
using PatternLayerMap = std::unordered_map<std::string, PatternDependency>;
class Bucket : private util::noncopyable {
public:
Bucket(style::LayerType layerType_)
: layerType(layerType_) {
}
virtual ~Bucket() = default;
// Check whether this bucket is of the given subtype.
template <class T>
bool is() const;
// Dynamically cast this bucket to the given subtype.
template <class T>
T* as() {
return is<T>() ? reinterpret_cast<T*>(this) : nullptr;
}
template <class T>
const T* as() const {
return is<T>() ? reinterpret_cast<const T*>(this) : nullptr;
}
// Feature geometries are also used to populate the feature index.
// Obtaining these is a costly operation, so we do it only once, and
// pass-by-const-ref the geometries as a second parameter.
virtual void addFeature(const GeometryTileFeature&,
const GeometryCollection&,
const ImagePositions&,
const PatternLayerMap&) {};
virtual void populateFeatureBuffers(const ImagePositions&) {};
virtual void addPatternDependencies(const std::vector<const RenderLayer*>&, ImageDependencies&) {};
// As long as this bucket has a Prepare render pass, this function is getting called. Typically,
// this only happens once when the bucket is being rendered for the first time.
virtual void upload(gl::Context&) = 0;
virtual bool hasData() const = 0;
virtual float getQueryRadius(const RenderLayer&) const {
return 0;
};
bool needsUpload() const {
return hasData() && !uploaded;
}
protected:
style::LayerType layerType;
std::atomic<bool> uploaded { false };
};
} // namespace mbgl
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