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#pragma once
#include <mbgl/gl/object_store.hpp>
#include <mbgl/util/image.hpp>
#include <mbgl/util/optional.hpp>
#include <atomic>
#include <array>
namespace mbgl {
namespace gl {
class Config;
} // namespace gl
class Raster {
public:
enum class MipMap : bool { No = false, Yes = true };
enum class Scaling : bool { Nearest = false, Linear = true };
// load image data
void load(PremultipliedImage, uint32_t mipmapLevel = 0);
// bind current texture
void bind(gl::ObjectStore&,
gl::Config&,
uint32_t unit,
Scaling = Scaling::Nearest,
MipMap = MipMap::No);
// uploads the texture if it hasn't been uploaded yet.
void upload(gl::ObjectStore&, gl::Config&, uint32_t unit);
// loaded status
bool isLoaded() const;
// returns the OpenGL texture ID
GLuint getID() const;
// size of uploaded image.
std::array<uint16_t, 2> getSize() const;
private:
// raw pixels have been loaded
std::atomic<bool> loaded { false };
std::array<uint16_t, 2> size = {{ 0, 0 }};
// filters
Scaling filter = Scaling::Nearest;
MipMap mipmap = MipMap::No;
// the raw pixels
std::vector<PremultipliedImage> images;
// GL buffer object handle.
mbgl::optional<gl::UniqueTexture> texture;
};
} // namespace mbgl
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