summaryrefslogtreecommitdiff
path: root/src/video/sdl2_opengl_v.h
blob: a59233db6d527a6ebb6d2f386bda6fb4c915aef8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
/*
 * This file is part of OpenTTD.
 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
 * OpenTTD 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 OpenTTD. If not, see <http://www.gnu.org/licenses/>.
 */

/** @file sdl2_opengl_v.h OpenGL backend of the SDL2 video driver. */

#include "sdl2_v.h"

/** The OpenGL video driver for windows. */
class VideoDriver_SDL_OpenGL : public VideoDriver_SDL_Base {
public:
	VideoDriver_SDL_OpenGL() : gl_context(nullptr), anim_buffer(nullptr) {}

	const char *Start(const StringList &param) override;

	void Stop() override;

	bool HasEfficient8Bpp() const override { return true; }

	bool UseSystemCursor() override { return true; }

	void ClearSystemSprites() override;

	bool HasAnimBuffer() override { return true; }
	uint8 *GetAnimBuffer() override { return this->anim_buffer; }

	const char *GetName() const override { return "sdl-opengl"; }

protected:
	bool AllocateBackingStore(int w, int h, bool force = false) override;
	void *GetVideoPointer() override;
	void ReleaseVideoPointer() override;
	void Paint() override;
	bool CreateMainWindow(uint w, uint h, uint flags) override;

	void PaintThread() override {}

private:
	void  *gl_context;  ///< OpenGL context.
	uint8 *anim_buffer; ///< Animation buffer from OpenGL back-end.

	const char *AllocateContext();
	void DestroyContext();
};

/** The factory for SDL' OpenGL video driver. */
class FVideoDriver_SDL_OpenGL : public DriverFactoryBase {
public:
	FVideoDriver_SDL_OpenGL() : DriverFactoryBase(Driver::DT_VIDEO, 8, "sdl-opengl", "SDL OpenGL Video Driver") {}
	/* virtual */ Driver *CreateInstance() const override { return new VideoDriver_SDL_OpenGL(); }
};