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Diffstat (limited to 'src/3rdparty/angle/src/libANGLE/HandleAllocator.h')
-rw-r--r-- | src/3rdparty/angle/src/libANGLE/HandleAllocator.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/src/3rdparty/angle/src/libANGLE/HandleAllocator.h b/src/3rdparty/angle/src/libANGLE/HandleAllocator.h new file mode 100644 index 0000000000..c22f2ba61a --- /dev/null +++ b/src/3rdparty/angle/src/libANGLE/HandleAllocator.h @@ -0,0 +1,63 @@ +// +// Copyright (c) 2002-2011 The ANGLE Project Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. +// + +// HandleAllocator.h: Defines the gl::HandleAllocator class, which is used to +// allocate GL handles. + +#ifndef LIBANGLE_HANDLEALLOCATOR_H_ +#define LIBANGLE_HANDLEALLOCATOR_H_ + +#include "common/angleutils.h" + +#include "angle_gl.h" + +#include <stack> + +namespace gl +{ + +class HandleAllocator final : angle::NonCopyable +{ + public: + // Maximum handle = MAX_UINT-1 + HandleAllocator(); + // Specify maximum handle value + HandleAllocator(GLuint maximumHandleValue); + + ~HandleAllocator(); + + void setBaseHandle(GLuint value); + + GLuint allocate(); + void release(GLuint handle); + void reserve(GLuint handle); + + private: + GLuint mBaseValue; + GLuint mNextValue; + typedef std::vector<GLuint> HandleList; + HandleList mFreeValues; + + struct HandleRange + { + HandleRange(GLuint beginIn, GLuint endIn) : begin(beginIn), end(endIn) {} + + GLuint begin; + GLuint end; + }; + + struct HandleRangeComparator; + + // The freelist consists of never-allocated handles, stored + // as ranges, and handles that were previously allocated and + // released, stored in a stack. + std::vector<HandleRange> mUnallocatedList; + std::vector<GLuint> mReleasedList; +}; + +} + +#endif // LIBANGLE_HANDLEALLOCATOR_H_ |