Make dynamic cube maps work again in boxes

Reviewed-by: trustme

1 files changed, 1 insertions, 1 deletions

diff --git a/demos/boxes/glbuffers.cpp b/demos/boxes/glbuffers.cpp
index a3d26f6089..3b16d17154 100644
--- a/demos/boxes/glbuffers.cpp
+++ b/demos/boxes/glbuffers.cpp
@@ -372,7 +372,7 @@ void GLRenderTargetCube::getViewMatrix(QMatrix4x4& mat, int face)
         {-1.0f, -1.0f, +1.0f},
     };
 
-    memset(mat.data(), 0, sizeof(float) * 16);
+    mat.fill(0.0f);
     for (int i = 0; i < 3; ++i)
         mat(i, perm[face][i]) = signs[face][i];
     mat(3, 3) = 1.0f;