From e01bed44bca9bd0919f70dfc14f8297415d61bd9 Mon Sep 17 00:00:00 2001

From: Gunnar Sletta <gunnar@sletta.org>

Date: Mon, 15 Feb 2016 08:02:50 +0100

Subject: [PATCH 29/61] Avoid div-by-zero when nothing is rendered.

Change-Id: I3eb57baf1812f831335429cc7d2b4424f3cfa785

Task-number: QTBUG-50929

Reviewed-by: Laszlo Agocs <laszlo.agocs@theqtcompany.com>

---

 src/quick/scenegraph/coreapi/qsgbatchrenderer.cpp | 4 +++-

 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/quick/scenegraph/coreapi/qsgbatchrenderer.cpp b/src/quick/scenegraph/coreapi/qsgbatchrenderer.cpp

index b1792d2..dd1ff14 100644

--- a/src/quick/scenegraph/coreapi/qsgbatchrenderer.cpp

+++ b/src/quick/scenegraph/coreapi/qsgbatchrenderer.cpp

@@ -2654,7 +2654,9 @@ void Renderer::render()

         if (m_alphaBatches.size())

             std::sort(&m_alphaBatches.first(), &m_alphaBatches.last() + 1, qsg_sort_batch_increasing_order);

-        m_zRange = 1.0 / (m_nextRenderOrder);

+        m_zRange = m_nextRenderOrder != 0

+                 ? 1.0 / (m_nextRenderOrder)

+                 : 0;

     }

     if (Q_UNLIKELY(debug_render())) timeSorting = timer.restart();

-- 

1.9.3