Merge branch '4.7' of scm.dev.nokia.troll.no:qt/qt-s60-public into 4.7-integration

* '4.7' of scm.dev.nokia.troll.no:qt/qt-s60-public:
  Fix for clipping failure in OpenVG paint engine.

2 files changed, 33 insertions, 5 deletions

diff --git a/src/openvg/qpaintengine_vg.cpp b/src/openvg/qpaintengine_vg.cpp
index a15f0c3..22cbbf5 100644
--- a/src/openvg/qpaintengine_vg.cpp
+++ b/src/openvg/qpaintengine_vg.cpp
@@ -2201,6 +2201,12 @@ void QVGPaintEngine::updateScissor()
 #if defined(QVG_SCISSOR_CLIP)
     // Using the scissor to do clipping, so combine the systemClip
     // with the current painting clipRegion.
+
+    if (d->maskValid) {
+        vgSeti(VG_MASKING, VG_FALSE);
+        d->maskValid = false;
+    }
+
     QVGPainterState *s = state();
     if (s->clipEnabled) {
         if (region.isEmpty())
@@ -2250,8 +2256,33 @@ void QVGPaintEngine::updateScissor()
 
     QVector<QRect> rects = region.rects();
     int count = rects.count();
-    if (count > d->maxScissorRects)
-        count = d->maxScissorRects;
+    if (count > d->maxScissorRects) {
+#if !defined(QVG_SCISSOR_CLIP)
+         count = d->maxScissorRects;
+#else
+        // Use masking
+        int width = paintDevice()->width();
+        int height = paintDevice()->height();
+        vgMask(VG_INVALID_HANDLE, VG_CLEAR_MASK,
+                   0, 0, width, height);
+        for (int i = 0; i < rects.size(); ++i) {
+            vgMask(VG_INVALID_HANDLE, VG_FILL_MASK,
+                   rects[i].x(), height - rects[i].y() - rects[i].height(),
+                   rects[i].width(), rects[i].height());
+        }
+
+        vgSeti(VG_SCISSORING, VG_FALSE);
+        vgSeti(VG_MASKING, VG_TRUE);
+        d->maskValid = true;
+        d->maskIsSet = false;
+        d->scissorMask = false;
+        d->scissorActive = false;
+        d->scissorDirty = false;
+        d->scissorRegion = region;
+        return;
+#endif
+    }
+
     QVarLengthArray<VGint> params(count * 4);
     int height = paintDevice()->height();
     for (int i = 0; i < count; ++i) {
diff --git a/src/openvg/qwindowsurface_vgegl.cpp b/src/openvg/qwindowsurface_vgegl.cpp
index c6db869..ca80886 100644
--- a/src/openvg/qwindowsurface_vgegl.cpp
+++ b/src/openvg/qwindowsurface_vgegl.cpp
@@ -267,10 +267,7 @@ static QEglContext *createContext(QPaintDevice *device)
     int redSize = configProps.value(EGL_RED_SIZE);
     if (redSize == EGL_DONT_CARE || redSize == 0)
         configProps.setPixelFormat(QImage::Format_ARGB32);  // XXX
-#ifndef QVG_SCISSOR_CLIP
-    // If we are using the mask to clip, then explicitly request a mask.
     configProps.setValue(EGL_ALPHA_MASK_SIZE, 1);
-#endif
 #ifdef EGL_VG_ALPHA_FORMAT_PRE_BIT
     configProps.setValue(EGL_SURFACE_TYPE, EGL_WINDOW_BIT |
                          EGL_VG_ALPHA_FORMAT_PRE_BIT);