diff options
Diffstat (limited to 'canvas/source/opengl/ogl_texturecache.hxx')
-rw-r--r-- | canvas/source/opengl/ogl_texturecache.hxx | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/canvas/source/opengl/ogl_texturecache.hxx b/canvas/source/opengl/ogl_texturecache.hxx new file mode 100644 index 000000000..8d0a425ce --- /dev/null +++ b/canvas/source/opengl/ogl_texturecache.hxx @@ -0,0 +1,60 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * 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/. + */ + +#pragma once + +#include <sal/types.h> +#include <unordered_map> + +namespace com::sun::star::geometry { struct IntegerSize2D; } + + +namespace oglcanvas +{ + class TextureCache + { + public: + TextureCache(); + ~TextureCache(); + + /// clear whole cache, reset statistic counters + void flush(); + + /** prune old entries from cache + + Every time this method is called, all cache entries are set + to "old". If subsequently not used by getTexture(), + they'll be entitled for expunge on the next prune() + call. Resets statistic counters. + */ + void prune(); + + /// Statistics + size_t getCacheSize() const { return maCache.size(); }; + sal_uInt32 getCacheMissCount() const { return mnMissCount; } + sal_uInt32 getCacheHitCount() const { return mnHitCount; } + + unsigned int getTexture( const css::geometry::IntegerSize2D& rPixelSize, + const sal_Int8* pPixel, + sal_uInt32 nPixelCrc32) const; + private: + struct CacheEntry + { + CacheEntry() : nTexture(0), bOld(false) {} + unsigned int nTexture; + bool bOld; + }; + typedef std::unordered_map<sal_uInt32,CacheEntry> TextureCacheMapT; + mutable TextureCacheMapT maCache; + mutable sal_uInt32 mnMissCount; + mutable sal_uInt32 mnHitCount; + }; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |