gecko-dev/gfx/gl/GLLibraryLoader.h

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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef GLLIBRARYLOADER_H_
#define GLLIBRARYLOADER_H_
#include <stdio.h>
#ifdef WIN32
#include <windows.h>
#endif
#include "GLDefs.h"
#include "nscore.h"
#include "prlink.h"
namespace mozilla {
namespace gl {
class GLLibraryLoader
{
public:
bool OpenLibrary(const char *library);
typedef PRFuncPtr (GLAPIENTRY * PlatformLookupFunction) (const char *);
enum {
MAX_SYMBOL_NAMES = 6,
MAX_SYMBOL_LENGTH = 128
};
typedef struct {
PRFuncPtr *symPointer;
const char *symNames[MAX_SYMBOL_NAMES];
} SymLoadStruct;
bool LoadSymbols(SymLoadStruct *firstStruct,
bool tryplatform = false,
const char *prefix = nullptr,
bool warnOnFailure = true);
/*
* Static version of the functions in this class
*/
static PRFuncPtr LookupSymbol(PRLibrary *lib,
const char *symname,
PlatformLookupFunction lookupFunction = nullptr);
static bool LoadSymbols(PRLibrary *lib,
SymLoadStruct *firstStruct,
PlatformLookupFunction lookupFunction = nullptr,
const char *prefix = nullptr,
bool warnOnFailure = true);
protected:
GLLibraryLoader() {
mLibrary = nullptr;
mLookupFunc = nullptr;
}
PRLibrary *mLibrary;
PlatformLookupFunction mLookupFunc;
};
} /* namespace gl */
} /* namespace mozilla */
#endif /* GLLIBRARYLOADER_H_ */