Explicitly set clear color

diff --git a/gltest.cpp b/gltest.cpp
index ed45ac677a311bad053024b7421b267e1deb3050..feb794fcc08948f3d386f61e21200c073a6d2003 100644 (file)
--- a/gltest.cpp
+++ b/gltest.cpp
@@ -99,15 +99,16 @@ protected:
        
        virtual void resizeGL(unsigned int width, unsigned int height)
        {
        
        virtual void resizeGL(unsigned int width, unsigned int height)
        {

-               /* prevent divide-by-zero */                      
-               if (height == 0)                                  
-                       height = 1;                                   
+               // prevent divide-by-zero
+               if (height == 0)
+                       height = 1;

                glViewport(0, 0, width, height);
                glViewport(0, 0, width, height);

-               glMatrixMode(GL_PROJECTION);                      
-               glLoadIdentity();                                 
+               glMatrixMode(GL_PROJECTION);
+               glLoadIdentity();

                glOrtho (0, 1, 1, 0, 0, 1);
                glOrtho (0, 1, 1, 0, 0, 1);

-               glMatrixMode(GL_MODELVIEW);      
-               glClear(GL_COLOR_BUFFER_BIT);                                                 
+               glMatrixMode(GL_MODELVIEW);
+               glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
+               glClear(GL_COLOR_BUFFER_BIT);

                glFlush();
        }
        
                glFlush();
        }