QtQuick: clean up shader effect property connections

- Don't use a signal mapper, but handle the mapping using a custom slot
  object and a lambda to do the dispatching ourselves.
- Don't do meta-calls by property name, but by index.
- Cache the meta-object.
- Resolve the property indices by using the QML property cache.

For a shader with 6 property connections, the time spent goes from 320k
instructions to 80k instructions (valgrind on x86_64).

Task-number: QTBUG-53901
Change-Id: I2809198cf62f9716b3683798222203fc3e97fbb3
Reviewed-by: Robin Burchell <robin.burchell@viroteck.net>

1 files changed, 2 insertions, 2 deletions

diff --git a/src/qml/qml/ftw/qhashedstring_p.h b/src/qml/qml/ftw/qhashedstring_p.h
index 6ff3e4a11b..03361f47f7 100644
--- a/src/qml/qml/ftw/qhashedstring_p.h
+++ b/src/qml/qml/ftw/qhashedstring_p.h
@@ -67,7 +67,7 @@ QT_BEGIN_NAMESPACE
 // #define QSTRINGHASH_LINK_DEBUG
 
 class QHashedStringRef;
-class Q_AUTOTEST_EXPORT QHashedString : public QString
+class Q_QML_PRIVATE_EXPORT QHashedString : public QString
 {
 public:
     inline QHashedString();
@@ -94,7 +94,7 @@ private:
 };
 
 class QHashedCStringRef;
-class Q_AUTOTEST_EXPORT QHashedStringRef
+class Q_QML_PRIVATE_EXPORT QHashedStringRef
 {
 public:
     inline QHashedStringRef();