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+/*
+ * Copyright 2007-2008 Sun Microsystems, Inc. All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+#ifndef D3DGLYPHCACHE_H
+#define D3DGLYPHCACHE_H
+
+#include "AccelGlyphCache.h"
+#include "D3DContext.h"
+#include "D3DResourceManager.h"
+
+typedef enum {
+ CACHE_GRAY,
+ CACHE_LCD
+} GlyphCacheType;
+
+class D3DContext;
+class D3DResource;
+
+class D3DGlyphCache {
+public:
+ // creates accel. glyph cache if it wasn't created, and the glyph
+ // cache texure
+ HRESULT Init(D3DContext *pCtx);
+ // releases the glyph cache texture, invalidates the accel. glyph cache
+ void ReleaseDefPoolResources();
+ // releases texture and deletes the accel. glyph cache
+ ~D3DGlyphCache();
+
+ // adds the glyph to the accel. glyph cache and uploads it into the glyph
+ // cache texture
+ HRESULT AddGlyph(GlyphInfo *glyph);
+
+ GlyphCacheInfo* GetGlyphCache() { return pGlyphCache; }
+ D3DResource* GetGlyphCacheTexture() { return pGlyphCacheRes; }
+
+ // Note: only applicable to CACHE_LCD type of the cache
+ // if the new rgb order doesn't match the current one, invalidates
+ // the accel. glyph cache, also resets the current tileFormat
+ HRESULT CheckGlyphCacheByteOrder(jboolean rgbOrder);
+
+static
+ HRESULT CreateInstance(D3DContext *pCtx,
+ GlyphCacheType gcType,
+ D3DGlyphCache **ppGlyphCache);
+
+private:
+ D3DGlyphCache(GlyphCacheType gcType);
+
+ D3DContext *pCtx;
+ GlyphCacheType gcType;
+ D3DResource *pGlyphCacheRes;
+ GlyphCacheInfo *pGlyphCache;
+ TileFormat tileFormat;
+ /**
+ * Relevant only for the CACHE_LCD cache type.
+ *
+ * This value tracks the previous LCD rgbOrder setting, so if the rgbOrder
+ * value has changed since the last time, it indicates that we need to
+ * invalidate the cache, which may already store glyph images in the
+ * reverse order. Note that in most real world applications this value
+ * will not change over the course of the application, but tests like
+ * Font2DTest allow for changing the ordering at runtime, so we need to
+ * handle that case.
+ */
+ jboolean lastRGBOrder;
+};
+#endif // D3DGLYPHCACHE_H