Merge pull request #39 from aaronkennedy/jb9394

[qtdeclarative] Handle glyph runs with >65536 glyphs

qtdeclarative/src/quick/scenegraph/qsgdistancefieldglyphnode.cpp

@@ -235,7 +235,12 @@ void QSGDistanceFieldGlyphNode::updateGeometry()
         if (texture->textureId && !m_texture)
             m_texture = texture;
 
-        if (m_texture != texture) {
+        // As we use UNSIGNED_SHORT indexing in the geometry, we overload the 
+        // "glyphsInOtherTextures" concept as overflow for if there are more than 
+        // 65536 vertices to render which would otherwise exceed the maximum index 
+        // size.  This will cause sub-nodes to be recursively created to handle any
+        // number of glyphs.
+        if (m_texture != texture || vp.size() >= 65536) {
             if (texture->textureId) {
                 GlyphInfo &glyphInfo = glyphsInOtherTextures[texture];
                 glyphInfo.indexes.append(glyphIndex);