From 7b60cad9b041ce0f7c45dfdc95370a86dc95aeb6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20Vondru=C5=A1?= <mosra@centrum.cz>
Date: Sun, 9 Oct 2016 22:31:21 +0200
Subject: [PATCH] Properly handle instance count in the fallback multi draw
 implementation.

---
 src/Magnum/MeshView.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/Magnum/MeshView.cpp b/src/Magnum/MeshView.cpp
index e1a55c7a4..1bc587204 100644
--- a/src/Magnum/MeshView.cpp
+++ b/src/Magnum/MeshView.cpp
@@ -133,10 +133,12 @@ void MeshView::multiDrawImplementationFallback(std::initializer_list<std::refere
         /* Nothing to draw in this mesh */
         if(!mesh._count) continue;
 
+        CORRADE_ASSERT(mesh._instanceCount == 1, "MeshView::draw(): cannot draw multiple instanced meshes", );
+
         #ifndef MAGNUM_TARGET_GLES2
-        mesh._original.get().drawInternal(mesh._count, mesh._baseVertex, mesh._instanceCount, mesh._indexOffset, mesh._indexStart, mesh._indexEnd);
+        mesh._original.get().drawInternal(mesh._count, mesh._baseVertex, 1, mesh._indexOffset, mesh._indexStart, mesh._indexEnd);
         #else
-        mesh._original.get().drawInternal(mesh._count, mesh._baseVertex, mesh._instanceCount, mesh._indexOffset);
+        mesh._original.get().drawInternal(mesh._count, mesh._baseVertex, 1, mesh._indexOffset);
         #endif
     }
 }