Cleanup QtOpenGL examples

Cleanup the OpenGL examples
 - use nullptr (clang-tidy)
 - use member-initialization
 - avoid redundant checks for != nullptr when deleting a pointer

Change-Id: I3e4702690ed79e71c3e952d51ceef83b907b45b7
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>

1 files changed, 13 insertions, 13 deletions

diff --git a/examples/opengl/hellogles3/glwindow.h b/examples/opengl/hellogles3/glwindow.h
index fba997bee4..dfa0680714 100644
--- a/examples/opengl/hellogles3/glwindow.h
+++ b/examples/opengl/hellogles3/glwindow.h
@@ -90,23 +90,23 @@ public:
 private slots:
     void startSecondStage();
 private:
-    QOpenGLTexture *m_texture;
-    QOpenGLShaderProgram *m_program;
-    QOpenGLBuffer *m_vbo;
-    QOpenGLVertexArrayObject *m_vao;
+    QOpenGLTexture *m_texture = nullptr;
+    QOpenGLShaderProgram *m_program = nullptr;
+    QOpenGLBuffer *m_vbo = nullptr;
+    QOpenGLVertexArrayObject *m_vao = nullptr;
     Logo m_logo;
-    int m_projMatrixLoc;
-    int m_camMatrixLoc;
-    int m_worldMatrixLoc;
-    int m_myMatrixLoc;
-    int m_lightPosLoc;
+    int m_projMatrixLoc = 0;
+    int m_camMatrixLoc = 0;
+    int m_worldMatrixLoc = 0;
+    int m_myMatrixLoc = 0;
+    int m_lightPosLoc = 0;
     QMatrix4x4 m_proj;
     QMatrix4x4 m_world;
     QVector3D m_eye;
-    QVector3D m_target;
-    bool m_uniformsDirty;
-    float m_r;
-    float m_r2;
+    QVector3D m_target = {0, 0, -1};
+    bool m_uniformsDirty = true;
+    float m_r = 0;
+    float m_r2 = 0;
 };
 
 #endif