1 files changed, 12 insertions, 5 deletions

diff --git a/src/quick/scenegraph/coreapi/qsgbatchrenderer.cpp b/src/quick/scenegraph/coreapi/qsgbatchrenderer.cpp
index f525c83009..c9115f35fc 100644
--- a/src/quick/scenegraph/coreapi/qsgbatchrenderer.cpp
+++ b/src/quick/scenegraph/coreapi/qsgbatchrenderer.cpp
@@ -758,6 +758,8 @@ Renderer::Renderer(QSGRenderContext *ctx)
     , m_tmpOpaqueElements(16)
     , m_rebuild(FullRebuild)
     , m_zRange(0)
+    , m_renderOrderRebuildLower(-1)
+    , m_renderOrderRebuildUpper(-1)
     , m_currentMaterial(0)
     , m_currentShader(0)
     , m_currentClip(0)
@@ -1422,8 +1424,11 @@ void Renderer::invalidateBatchAndOverlappingRenderOrders(Batch *batch)
     Q_ASSERT(batch);
     Q_ASSERT(batch->first);
 
-    int first = batch->first->order;
-    int last = batch->lastOrderInBatch;
+    if (m_renderOrderRebuildLower < 0 || batch->first->order < m_renderOrderRebuildLower)
+        m_renderOrderRebuildLower = batch->first->order;
+    if (m_renderOrderRebuildUpper < 0 || batch->lastOrderInBatch > m_renderOrderRebuildUpper)
+        m_renderOrderRebuildUpper = batch->lastOrderInBatch;
+
     batch->invalidate();
 
     for (int i=0; i<m_alphaBatches.size(); ++i) {
@@ -1431,7 +1436,7 @@ void Renderer::invalidateBatchAndOverlappingRenderOrders(Batch *batch)
         if (b->first) {
             int bf = b->first->order;
             int bl = b->lastOrderInBatch;
-            if (bl > first && bf < last)
+            if (bl > m_renderOrderRebuildLower && bf < m_renderOrderRebuildUpper)
                 b->invalidate();
         }
     }
@@ -1444,7 +1449,7 @@ void Renderer::invalidateBatchAndOverlappingRenderOrders(Batch *batch)
  */
 void Renderer::cleanupBatches(QDataBuffer<Batch *> *batches) {
     if (batches->size()) {
-        std::sort(&batches->first(), &batches->last() + 1, qsg_sort_batch_is_valid);
+        std::stable_sort(&batches->first(), &batches->last() + 1, qsg_sort_batch_is_valid);
         int count = 0;
         while (count < batches->size() && batches->at(count)->first)
             ++count;
@@ -2190,7 +2195,7 @@ void Renderer::renderUnmergedBatch(const Batch *batch)
         if (g->drawingMode() == GL_LINE_STRIP || g->drawingMode() == GL_LINE_LOOP || g->drawingMode() == GL_LINES)
             glLineWidth(g->lineWidth());
 #if !defined(QT_OPENGL_ES_2)
-        else if (g->drawingMode() == GL_POINTS)
+        else if (!QOpenGLContext::currentContext()->isOpenGLES() && g->drawingMode() == GL_POINTS)
             glPointSize(g->lineWidth());
 #endif
 
@@ -2430,6 +2435,8 @@ void Renderer::render()
     renderBatches();
 
     m_rebuild = 0;
+    m_renderOrderRebuildLower = -1;
+    m_renderOrderRebuildUpper = -1;
 
     if (m_visualizeMode != VisualizeNothing)
         visualize();