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#pragma once
#include <mbgl/gl/gl.hpp>
#include <mbgl/gl/object_store.hpp>
#include <mbgl/util/optional.hpp>
#include <vector>
#include <map>
namespace mbgl {
typedef struct {
float width;
float height;
float y;
} LinePatternPos;
class LineAtlas {
public:
LineAtlas(GLsizei width, GLsizei height);
~LineAtlas();
// Binds the atlas texture to the GPU, and uploads data if it is out of date.
void bind(gl::ObjectStore&);
// Uploads the texture to the GPU to be available when we need it. This is a lazy operation;
// the texture is only bound when the data is out of date (=dirty).
void upload(gl::ObjectStore&);
LinePatternPos getDashPosition(const std::vector<float>&, bool, gl::ObjectStore&);
LinePatternPos addDash(const std::vector<float> &dasharray, bool round, gl::ObjectStore&);
const GLsizei width;
const GLsizei height;
private:
const std::unique_ptr<GLbyte[]> data;
bool dirty;
mbgl::optional<gl::UniqueTexture> texture;
int nextRow = 0;
std::map<size_t, LinePatternPos> positions;
};
} // namespace mbgl
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