Reference count glyphs in QSGDistanceFieldGlyphCache.

[profile/ivi/qtdeclarative.git] / src / quick / scenegraph / qsgadaptationlayer.cpp

diff --git a/src/quick/scenegraph/qsgadaptationlayer.cpp b/src/quick/scenegraph/qsgadaptationlayer.cpp
index 57c0990..73ac81f 100644 (file)
--- a/src/quick/scenegraph/qsgadaptationlayer.cpp
+++ b/src/quick/scenegraph/qsgadaptationlayer.cpp
@@ -132,6 +132,7 @@ const QSGDistanceFieldGlyphCache::Texture *QSGDistanceFieldGlyphCache::glyphText
 
 void QSGDistanceFieldGlyphCache::populate(const QVector<glyph_t> &glyphs)
 {
+    QSet<glyph_t> referencedGlyphs;
     QSet<glyph_t> newGlyphs;
     int count = glyphs.count();
     for (int i = 0; i < count; ++i) {
@@ -141,6 +142,9 @@ void QSGDistanceFieldGlyphCache::populate(const QVector<glyph_t> &glyphs)
             continue;
         }
 
+        ++m_cacheData->glyphRefCount[glyphIndex];
+        referencedGlyphs.insert(glyphIndex);
+
         if (m_cacheData->texCoords.contains(glyphIndex) || newGlyphs.contains(glyphIndex))
             continue;
 
@@ -160,18 +164,20 @@ void QSGDistanceFieldGlyphCache::populate(const QVector<glyph_t> &glyphs)
     if (newGlyphs.isEmpty())
         return;
 
-    QVector<glyph_t> glyphsVec;
-    QSet<glyph_t>::const_iterator it = newGlyphs.constBegin();
-    while (it != newGlyphs.constEnd()) {
-        glyphsVec.append(*it);
-        ++it;
-    }
-    requestGlyphs(glyphsVec);
+    referenceGlyphs(referencedGlyphs);
+    requestGlyphs(newGlyphs);
 }
 
 void QSGDistanceFieldGlyphCache::release(const QVector<glyph_t> &glyphs)
 {
-    releaseGlyphs(glyphs);
+    QSet<glyph_t> unusedGlyphs;
+    int count = glyphs.count();
+    for (int i = 0; i < count; ++i) {
+        glyph_t glyphIndex = glyphs.at(i);
+        if (--m_cacheData->glyphRefCount[glyphIndex] == 0 && !glyphTexCoord(glyphIndex).isNull())
+            unusedGlyphs.insert(glyphIndex);
+    }
+    releaseGlyphs(unusedGlyphs);
 }
 
 void QSGDistanceFieldGlyphCache::update()