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#ifndef MBGL_MAP_UTIL_GL_OBJECT_STORE
#define MBGL_MAP_UTIL_GL_OBJECT_STORE
#include <mbgl/gl/gl.hpp>
#include <mbgl/util/noncopyable.hpp>
#include <array>
#include <algorithm>
#include <memory>
#include <vector>
namespace mbgl {
namespace gl {
class GLObjectStore : private util::noncopyable {
public:
~GLObjectStore();
// Actually remove the objects we marked as abandoned with the above methods.
// Only call this while the OpenGL context is exclusive to this thread.
void performCleanup();
private:
friend class ProgramHolder;
friend class ShaderHolder;
friend class BufferHolder;
friend class TextureHolder;
friend class TexturePoolHolder;
friend class VAOHolder;
std::vector<GLuint> abandonedPrograms;
std::vector<GLuint> abandonedShaders;
std::vector<GLuint> abandonedBuffers;
std::vector<GLuint> abandonedTextures;
std::vector<GLuint> abandonedVAOs;
};
class GLHolder : private util::noncopyable {
public:
GLHolder() {}
GLHolder(GLHolder&& o) noexcept : id(o.id) { o.id = 0; }
GLHolder& operator=(GLHolder&& o) noexcept { id = o.id; o.id = 0; return *this; }
explicit operator bool() const { return id; }
GLuint getID() const { return id; }
protected:
GLuint id = 0;
GLObjectStore* objectStore = nullptr;
};
class ProgramHolder : public GLHolder {
public:
ProgramHolder() = default;
~ProgramHolder() { reset(); }
ProgramHolder(ProgramHolder&& o) noexcept : GLHolder(std::move(o)) {}
ProgramHolder& operator=(ProgramHolder&& o) noexcept { GLHolder::operator=(std::move(o)); return *this; }
void create(GLObjectStore&);
void reset();
};
class ShaderHolder : public GLHolder {
public:
ShaderHolder(GLenum type_) : type(type_) {}
~ShaderHolder() { reset(); }
ShaderHolder(ShaderHolder&& o) noexcept : GLHolder(std::move(o)), type(o.type) {}
ShaderHolder& operator=(ShaderHolder&& o) noexcept { GLHolder::operator=(std::move(o)); type = o.type; return *this; }
void create(GLObjectStore&);
void reset();
private:
GLenum type = 0;
};
class BufferHolder : public GLHolder {
public:
BufferHolder() = default;
~BufferHolder() { reset(); }
BufferHolder(BufferHolder&& o) noexcept : GLHolder(std::move(o)) {}
BufferHolder& operator=(BufferHolder&& o) noexcept { GLHolder::operator=(std::move(o)); return *this; }
void create(GLObjectStore&);
void reset();
};
class TextureHolder : public GLHolder {
public:
TextureHolder() = default;
~TextureHolder() { reset(); }
TextureHolder(TextureHolder&& o) noexcept : GLHolder(std::move(o)) {}
TextureHolder& operator=(TextureHolder&& o) noexcept { GLHolder::operator=(std::move(o)); return *this; }
void create(GLObjectStore&);
void reset();
};
class TexturePoolHolder : private util::noncopyable {
public:
static const GLsizei TextureMax = 64;
TexturePoolHolder() { ids.fill(0); }
~TexturePoolHolder() { reset(); }
TexturePoolHolder(TexturePoolHolder&& o) noexcept : ids(std::move(o.ids)) {}
TexturePoolHolder& operator=(TexturePoolHolder&& o) noexcept { ids = std::move(o.ids); return *this; }
explicit operator bool() { return std::none_of(ids.begin(), ids.end(), [](int id) { return id == 0; }); }
const std::array<GLuint, TextureMax>& getIDs() const { return ids; }
const GLuint& operator[](size_t pos) { return ids[pos]; }
void create(GLObjectStore&);
void reset();
private:
std::array<GLuint, TextureMax> ids;
GLObjectStore* objectStore = nullptr;
};
class VAOHolder : public GLHolder {
public:
VAOHolder() = default;
~VAOHolder() { reset(); }
VAOHolder(VAOHolder&& o) noexcept : GLHolder(std::move(o)) {}
VAOHolder& operator=(VAOHolder&& o) noexcept { GLHolder::operator=(std::move(o)); return *this; }
void create(GLObjectStore&);
void reset();
};
} // namespace gl
} // namespace mbgl
#endif
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