pcsx2/common/GL/Context.h

/*  PCSX2 - PS2 Emulator for PCs
 *  Copyright (C) 2002-2021  PCSX2 Dev Team
 *
 *  PCSX2 is free software: you can redistribute it and/or modify it under the terms
 *  of the GNU Lesser General Public License as published by the Free Software Found-
 *  ation, either version 3 of the License, or (at your option) any later version.
 *
 *  PCSX2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 *  without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 *  PURPOSE.  See the GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License along with PCSX2.
 *  If not, see <http://www.gnu.org/licenses/>.
 */

#pragma once

#include "common/Pcsx2Defs.h"
#include "common/WindowInfo.h"

#include <gsl/span>
#include <array>
#include <memory>
#include <vector>

namespace GL {
	class Context
	{
	public:
		Context(const WindowInfo& wi);
		virtual ~Context();

		enum class Profile
		{
			NoProfile,
			Core,
			ES
		};

		struct Version
		{
			Profile profile;
			int major_version;
			int minor_version;
		};

		struct FullscreenModeInfo
		{
			u32 width;
			u32 height;
			float refresh_rate;
		};

		__fi const WindowInfo& GetWindowInfo() const { return m_wi; }
		__fi bool IsGLES() const { return (m_version.profile == Profile::ES); }
		__fi u32 GetSurfaceWidth() const { return m_wi.surface_width; }
		__fi u32 GetSurfaceHeight() const { return m_wi.surface_height; }

		virtual void* GetProcAddress(const char* name) = 0;
		virtual bool ChangeSurface(const WindowInfo& new_wi) = 0;
		virtual void ResizeSurface(u32 new_surface_width = 0, u32 new_surface_height = 0) = 0;
		virtual bool SwapBuffers() = 0;
		virtual bool MakeCurrent() = 0;
		virtual bool DoneCurrent() = 0;
		virtual bool SetSwapInterval(s32 interval) = 0;
		virtual std::unique_ptr<Context> CreateSharedContext(const WindowInfo& wi) = 0;

		virtual std::vector<FullscreenModeInfo> EnumerateFullscreenModes();

		static std::unique_ptr<Context> Create(const WindowInfo& wi, gsl::span<const Version> versions_to_try);

		static std::unique_ptr<Context> Create(const WindowInfo& wi) { return Create(wi, GetAllVersionsList()); }

		static gsl::span<const Version> GetAllVersionsList();

	protected:
		WindowInfo m_wi;
		Version m_version = {};
	};
} // namespace GL