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-rw-r--r--progs/demos/reflect.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/progs/demos/reflect.c b/progs/demos/reflect.c
index d259d7b7188..bf6d91aaad3 100644
--- a/progs/demos/reflect.c
+++ b/progs/demos/reflect.c
@@ -389,7 +389,7 @@ static void SpecialKey( int key, int x, int y )
int main( int argc, char *argv[] )
{
glutInit(&argc, argv);
- glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH | GLUT_STENCIL);
+ glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH | GLUT_STENCIL | GLUT_ALPHA);
glutInitWindowPosition( 0, 0 );
glutInitWindowSize( Width, Height );
glutCreateWindow(argv[0]);