diff options
author | Michael Lutz <michi@icosahedron.de> | 2021-01-16 16:43:04 +0100 |
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committer | Michael Lutz <michi@icosahedron.de> | 2021-02-22 22:16:07 +0100 |
commit | ef478ade649add1ab1706370ff53bcb0c32798d1 (patch) | |
tree | bf39b20030319377edec1b654fe4e8c7ba4594a3 /src/video/opengl.h | |
parent | af4d32357cc4cea6878c61c366378477e62915d0 (diff) | |
download | openttd-ef478ade649add1ab1706370ff53bcb0c32798d1.tar.xz |
Add: [Win32] Video driver that uses OpenGL to transfer the video buffer to the screen.
Diffstat (limited to 'src/video/opengl.h')
-rw-r--r-- | src/video/opengl.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/src/video/opengl.h b/src/video/opengl.h new file mode 100644 index 000000000..9db1be5f5 --- /dev/null +++ b/src/video/opengl.h @@ -0,0 +1,49 @@ +/* $Id$ */ + +/* + * 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 opengl.h OpenGL video driver support. */ + +#ifndef VIDEO_OPENGL_H +#define VIDEO_OPENGL_H + +#include "../core/alloc_type.hpp" + +/** Platform-independent back-end singleton class for OpenGL video drivers. */ +class OpenGLBackend : public ZeroedMemoryAllocator { +private: + static OpenGLBackend *instance; ///< Singleton instance pointer. + + void *vid_buffer; ///< Pointer to the memory used for the video driver to draw to. + GLuint vid_texture; ///< Texture handle for the video buffer texture. + + OpenGLBackend(); + ~OpenGLBackend(); + + const char *Init(); + +public: + /** Get singleton instance of this class. */ + static inline OpenGLBackend *Get() + { + return OpenGLBackend::instance; + } + static const char *Create(); + static void Destroy(); + + bool Resize(int w, int h, bool force = false); + void Paint(); + + /** + * Get a pointer to the memory for the video driver to draw to. + * @return Pointer to draw on. + */ + void *GetVideoBuffer() { return this->vid_buffer; } +}; + +#endif /* VIDEO_OPENGL_H */ |