Move GL resource handling enablers to QtGui.

Made resource handling more robust by attempting to free GL resources in
the correct thread, and not forcing a context to become current to free
resources.

Change-Id: Ie81d4005b608972375755571d9b50ce82080709b
Reviewed-on: http://codereview.qt.nokia.com/3258
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Gunnar Sletta <gunnar.sletta@nokia.com>

1 files changed, 6 insertions, 3 deletions

diff --git a/src/opengl/gl2paintengineex/qglgradientcache_p.h b/src/opengl/gl2paintengineex/qglgradientcache_p.h
index 1c2d0a029a..1b001c3405 100644
--- a/src/opengl/gl2paintengineex/qglgradientcache_p.h
+++ b/src/opengl/gl2paintengineex/qglgradientcache_p.h
@@ -58,7 +58,7 @@
 
 QT_BEGIN_NAMESPACE
 
-class QGL2GradientCache
+class QGL2GradientCache : public QGLSharedResource
 {
     struct CacheInfo
     {
@@ -76,12 +76,15 @@ class QGL2GradientCache
 public:
     static QGL2GradientCache *cacheForContext(const QGLContext *context);
 
-    QGL2GradientCache(const QGLContext *) {}
-    ~QGL2GradientCache() { cleanCache(); }
+    QGL2GradientCache(QGuiGLContext *);
+    ~QGL2GradientCache();
 
     GLuint getBuffer(const QGradient &gradient, qreal opacity);
     inline int paletteSize() const { return 1024; }
 
+    void invalidateResource();
+    void freeResource(QGuiGLContext *ctx);
+
 private:
     inline int maxCacheSize() const { return 60; }
     inline void generateGradientColorTable(const QGradient& gradient,