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// SPDX-FileCopyrightText: 2023 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <optional>
#include <string>
namespace Core::Frontend {
/**
* Represents a drawing context that supports graphics operations.
*/
class GraphicsContext {
public:
virtual ~GraphicsContext() = default;
/// Inform the driver to swap the front/back buffers and present the current image
virtual void SwapBuffers() {}
/// Makes the graphics context current for the caller thread
virtual void MakeCurrent() {}
/// Releases (dunno if this is the "right" word) the context from the caller thread
virtual void DoneCurrent() {}
/// Parameters used to configure custom drivers (used by Android only)
struct CustomDriverParameters {
std::string hook_lib_dir;
std::string custom_driver_dir;
std::string custom_driver_name;
std::string file_redirect_dir;
};
/// Gets custom driver parameters configured by the frontend (used by Android only)
virtual std::optional<CustomDriverParameters> GetCustomDriverParameters() {
return {};
}
class Scoped {
public:
[[nodiscard]] explicit Scoped(GraphicsContext& context_) : context(context_) {
context.MakeCurrent();
}
~Scoped() {
if (active) {
context.DoneCurrent();
}
}
/// In the event that context was destroyed before the Scoped is destroyed, this provides a
/// mechanism to prevent calling a destroyed object's method during the deconstructor
void Cancel() {
active = false;
}
private:
GraphicsContext& context;
bool active{true};
};
/// Calls MakeCurrent on the context and calls DoneCurrent when the scope for the returned value
/// ends
[[nodiscard]] Scoped Acquire() {
return Scoped{*this};
}
};
} // namespace Core::Frontend
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