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//
// Copyright 2013 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.
//
// IndexRangeCache.h: Defines the gl::IndexRangeCache class which stores information about
// ranges of indices.
#ifndef LIBANGLE_INDEXRANGECACHE_H_
#define LIBANGLE_INDEXRANGECACHE_H_
#include "angle_gl.h"
#include "common/PackedEnums.h"
#include "common/angleutils.h"
#include "common/mathutil.h"
#include <map>
namespace gl
{
class IndexRangeCache
{
public:
IndexRangeCache();
~IndexRangeCache();
void addRange(DrawElementsType type,
size_t offset,
size_t count,
bool primitiveRestartEnabled,
const IndexRange &range);
bool findRange(DrawElementsType type,
size_t offset,
size_t count,
bool primitiveRestartEnabled,
IndexRange *outRange) const;
void invalidateRange(size_t offset, size_t size);
void clear();
private:
struct IndexRangeKey
{
IndexRangeKey();
IndexRangeKey(DrawElementsType type, size_t offset, size_t count, bool primitiveRestart);
bool operator<(const IndexRangeKey &rhs) const;
DrawElementsType type;
size_t offset;
size_t count;
bool primitiveRestartEnabled;
};
typedef std::map<IndexRangeKey, IndexRange> IndexRangeMap;
IndexRangeMap mIndexRangeCache;
};
} // namespace gl
#endif // LIBANGLE_INDEXRANGECACHE_H_
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