From 0f0ed2070333d61a2603cf3e9bc0cb15439e1177 Mon Sep 17 00:00:00 2001
From: Allan Sandfeld Jensen <allan.jensen@qt.io>
Date: Tue, 16 Oct 2018 13:08:10 +0200
Subject: At least warn when triggering a rendering limitation

We can only have up to 65536/4 tiles since we are indexing with
quint16.

Task-number: QTBUG-58924
Change-Id: I55b5a9f2a3fb4582e327859482dd978b61b21e4e
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
---
 src/quick/scenegraph/qsgbasicinternalimagenode.cpp | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src/quick')

diff --git a/src/quick/scenegraph/qsgbasicinternalimagenode.cpp b/src/quick/scenegraph/qsgbasicinternalimagenode.cpp
index c8699218ba..4effaa154d 100644
--- a/src/quick/scenegraph/qsgbasicinternalimagenode.cpp
+++ b/src/quick/scenegraph/qsgbasicinternalimagenode.cpp
@@ -230,6 +230,9 @@ QSGGeometry *QSGBasicInternalImageNode::updateGeometry(const QRectF &targetRect,
         ++vCells;
     if (innerTargetRect.bottom() != targetRect.bottom())
         ++vCells;
+    if (hCells * vCells * 4 >= 0x10000)
+        qWarning("QTBUG-58924 - Too many tiles in QSGInternalImageNode, rendering will be partially missing.");
+
     QVarLengthArray<X, 32> xData(2 * hCells);
     QVarLengthArray<Y, 32> yData(2 * vCells);
     X *xs = xData.data();
-- 
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