opengl1.h

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00001 /*
00002 **  ClanLib SDK
00003 **  Copyright (c) 1997-2011 The ClanLib Team
00004 **
00005 **  This software is provided 'as-is', without any express or implied
00006 **  warranty.  In no event will the authors be held liable for any damages
00007 **  arising from the use of this software.
00008 **
00009 **  Permission is granted to anyone to use this software for any purpose,
00010 **  including commercial applications, and to alter it and redistribute it
00011 **  freely, subject to the following restrictions:
00012 **
00013 **  1. The origin of this software must not be misrepresented; you must not
00014 **     claim that you wrote the original software. If you use this software
00015 **     in a product, an acknowledgment in the product documentation would be
00016 **     appreciated but is not required.
00017 **  2. Altered source versions must be plainly marked as such, and must not be
00018 **     misrepresented as being the original software.
00019 **  3. This notice may not be removed or altered from any source distribution.
00020 **
00021 **  Note: Some of the libraries ClanLib may link to may have additional
00022 **  requirements or restrictions.
00023 **
00024 **  File Author(s):
00025 **
00026 **    Magnus Norddahl
00027 **    Mark Page
00028 */
00029 
00032 
00033 #pragma once
00034 
00035 #include "api_gl1.h"
00036 #include "opengl1_defines.h"
00037 #include <utility>
00038 #include "../Core/Text/string_types.h"
00039 #include "../Display/Image/pixel_format.h"
00040 #include "../Display/Render/texture.h"
00041 
00042 class CL_GL1Functions;
00043 class CL_GraphicContext;
00044 class CL_GL1GraphicContextProvider;
00045 
00046 enum CL_TextureFormat;
00047 
00049 typedef void (CL_GL1ProcAddress)();
00050 
00054 class CL_API_GL1 CL_GL1
00055 {
00058 
00059 public:
00061         static CL_GL1ProcAddress *get_proc_address(const CL_String8 &function_name);
00062 
00064         static CL_GL1Functions *functions;
00065 
00067         static int get_textureformat_bits(CL_TextureFormat format);
00068 
00070 
00072         static bool to_opengl_pixelformat(const CL_PixelBuffer &pbuffer, GLenum &format, GLenum &type);
00073 
00075 
00077         static bool to_opengl_pixelformat(CL_TextureFormat texture_format, GLenum &format, GLenum &type);
00078 
00084         static void to_opengl_textureformat(CL_TextureFormat format, GLint &gl_internal_format, GLenum &gl_pixel_format);
00085 
00087         static void set_active(CL_GraphicContext &gc);
00088 
00090         static void set_active(const CL_GL1GraphicContextProvider * const gc_provider);
00091 
00097         static bool set_active();
00098 
00100 private:
00104         static void remove_active(const CL_GL1GraphicContextProvider * const gc_provider);
00105 
00106         friend class CL_GL1GraphicContextProvider;
00107 
00108 };
00109