ClanLib  2.3.7
opengl1.h
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1 /*
2 ** ClanLib SDK
3 ** Copyright (c) 1997-2011 The ClanLib Team
4 **
5 ** This software is provided 'as-is', without any express or implied
6 ** warranty. In no event will the authors be held liable for any damages
7 ** arising from the use of this software.
8 **
9 ** Permission is granted to anyone to use this software for any purpose,
10 ** including commercial applications, and to alter it and redistribute it
11 ** freely, subject to the following restrictions:
12 **
13 ** 1. The origin of this software must not be misrepresented; you must not
14 ** claim that you wrote the original software. If you use this software
15 ** in a product, an acknowledgment in the product documentation would be
16 ** appreciated but is not required.
17 ** 2. Altered source versions must be plainly marked as such, and must not be
18 ** misrepresented as being the original software.
19 ** 3. This notice may not be removed or altered from any source distribution.
20 **
21 ** Note: Some of the libraries ClanLib may link to may have additional
22 ** requirements or restrictions.
23 **
24 ** File Author(s):
25 **
26 ** Magnus Norddahl
27 ** Mark Page
28 */
29 
32 
33 #pragma once
34 
35 #include "api_gl1.h"
36 #include "opengl1_defines.h"
37 #include <utility>
38 #include "../Core/Text/string_types.h"
39 #include "../Display/Image/pixel_format.h"
40 #include "../Display/Render/texture.h"
41 
42 class CL_GL1Functions;
43 class CL_GraphicContext;
44 class CL_GL1GraphicContextProvider;
45 
46 enum CL_TextureFormat;
47 
49 typedef void (CL_GL1ProcAddress)();
50 
55 {
58 
59 public:
61  static CL_GL1ProcAddress *get_proc_address(const CL_String8 &function_name);
62 
65 
67  static int get_textureformat_bits(CL_TextureFormat format);
68 
70 
72  static bool to_opengl_pixelformat(const CL_PixelBuffer &pbuffer, GLenum &format, GLenum &type);
73 
75 
77  static bool to_opengl_pixelformat(CL_TextureFormat texture_format, GLenum &format, GLenum &type);
78 
84  static void to_opengl_textureformat(CL_TextureFormat format, GLint &gl_internal_format, GLenum &gl_pixel_format);
85 
87  static void set_active(CL_GraphicContext &gc);
88 
90  static void set_active(const CL_GL1GraphicContextProvider * const gc_provider);
91 
97  static bool set_active();
98 
100 private:
104  static void remove_active(const CL_GL1GraphicContextProvider * const gc_provider);
105 
106  friend class CL_GL1GraphicContextProvider;
107 
108 };
109