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/* Copyright (C) 2004 MySQL AB
This program 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; either version 2 of the License, or
(at your option) any later version.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
/**
* @file myx_gc_gl_helper.h
* @brief Helper functions for creating OpenGL data and structures out of XML data.
*
*/
#ifndef __GC_GL_HELPER_H__
#define __GC_GL_HELPER_H__
#include <libxml/xmlmemory.h>
#include "myx_gc_font_manager.h"
#include "myx_gc_texture.h"
extern PFNGLISRENDERBUFFEREXTPROC glIsRenderbufferEXT;
extern PFNGLBINDRENDERBUFFEREXTPROC glBindRenderbufferEXT;
extern PFNGLDELETERENDERBUFFERSEXTPROC glDeleteRenderbuffersEXT;
extern PFNGLGENRENDERBUFFERSEXTPROC glGenRenderbuffersEXT;
extern PFNGLRENDERBUFFERSTORAGEEXTPROC glRenderbufferStorageEXT;
extern PFNGLGETRENDERBUFFERPARAMETERIVEXTPROC glGetRenderbufferParameterivEXT;
extern PFNGLISFRAMEBUFFEREXTPROC glIsFramebufferEXT;
extern PFNGLBINDFRAMEBUFFEREXTPROC glBindFramebufferEXT;
extern PFNGLDELETEFRAMEBUFFERSEXTPROC glDeleteFramebuffersEXT;
extern PFNGLGENFRAMEBUFFERSEXTPROC glGenFramebuffersEXT;
extern PFNGLCHECKFRAMEBUFFERSTATUSEXTPROC glCheckFramebufferStatusEXT;
extern PFNGLFRAMEBUFFERTEXTURE1DEXTPROC glFramebufferTexture1DEXT;
extern PFNGLFRAMEBUFFERTEXTURE2DEXTPROC glFramebufferTexture2DEXT;
extern PFNGLFRAMEBUFFERTEXTURE3DEXTPROC glFramebufferTexture3DEXT;
extern PFNGLFRAMEBUFFERRENDERBUFFEREXTPROC glFramebufferRenderbufferEXT;
extern PFNGLGETFRAMEBUFFERATTACHMENTPARAMETERIVEXTPROC glGetFramebufferAttachmentParameterivEXT;
extern PFNGLGENERATEMIPMAPEXTPROC glGenerateMipmapEXT;
// Reads the attribute with the given name (if it exists) and converts it to a float value.
bool getFloatAttribute(xmlNodePtr Element, const char* name, float& Value);
// Like GetFloatAttribute but with a default value in case the attribute does not exist.
float getFloatAttributeDef(xmlNodePtr Element, const char* name, float Default);
// Reads the attribute with the given name (if it exists) and converts it to an integer value.
bool getIntAttribute(xmlNodePtr Element, const char* name, int& Value);
// Like GetIntAttribute but with a default value in case the attribute does not exist.
int getIntAttributeDef(xmlNodePtr Element, const char* name, int Default);
// Reads the attribute with the given name (if it exists) and returns it.
bool getStringAttribute(xmlNodePtr Element, const char* name, string& Value);
// Like GetStringAttribute but with a default value in case the attribute does not exist.
string getStringAttributeDef(xmlNodePtr Element, const char* name, const string Default);
// Reads the attribute with the given name and treats it as color value.
int convertColor(xmlNodePtr Element, const char* name, GLubyte* Color);
// Rounds the given value up to the next power-of-two value.
int roundUpToPowerOf2(int Value);
// Parses the given XML element for a texture definition.
void parseTextureEntry(xmlNodePtr XML, CGCModel* model);
void initializeOpenGLExtensions(void);
/** Helper class to initialize certain OpenGL things. */
class ExtensionInitializer
{
public:
ExtensionInitializer(void);
};
#endif // __GC_GL_HELPER_H__
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