зеркало из https://github.com/mozilla/gecko-dev.git
52 строки
1.3 KiB
C++
52 строки
1.3 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef GLLIBRARYLOADER_H_
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#define GLLIBRARYLOADER_H_
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#include <array>
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#include <stdio.h>
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#include "GLDefs.h"
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#include "nscore.h"
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#include "mozilla/SharedLibrary.h"
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namespace mozilla {
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namespace gl {
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struct SymLoadStruct final {
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PRFuncPtr* symPointer;
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std::array<const char*, 6> symNames;
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};
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void ClearSymbols(const SymLoadStruct* firstStruct);
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class SymbolLoader final {
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public:
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typedef PRFuncPtr(GLAPIENTRY* GetProcAddressT)(const char*);
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GetProcAddressT mPfn = nullptr; // Try this first, if not null.
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PRLibrary* mLib = nullptr;
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explicit SymbolLoader(void*(GLAPIENTRY* pfn)(const char*))
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: mPfn(GetProcAddressT(pfn)) {
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MOZ_ASSERT(mPfn);
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}
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explicit SymbolLoader(const GetProcAddressT pfn) : mPfn(pfn) {
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MOZ_ASSERT(mPfn);
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}
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explicit SymbolLoader(PRLibrary& lib) : mLib(&lib) { MOZ_ASSERT(mLib); }
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PRFuncPtr GetProcAddress(const char*) const;
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bool LoadSymbols(const SymLoadStruct* firstStruct,
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bool warnOnFailures = true) const;
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};
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} // namespace gl
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} // namespace mozilla
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#endif // GLLIBRARYLOADER_H_
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