1 files changed, 8 insertions, 0 deletions
diff --git a/sdl/gldraw.c b/sdl/gldraw.c
index ed455e0..5430009 100644
--- a/sdl/gldraw.c
+++ b/sdl/gldraw.c
@@ -188,6 +188,10 @@ void glDrawTriangle(void)
 
 void glDrawGround(void)
 {
+    glDisable(GL_MULTISAMPLE);
+    glEnable(GL_BLEND);
+    glEnable(GL_LINE_SMOOTH);
+
     GLfloat fExtent = 20.0f;
     GLfloat fStep = 0.5f;
     GLfloat y = -0.4f;
@@ -203,6 +207,10 @@ void glDrawGround(void)
         glVertex3f(-fExtent, y, iLine);
     }
     glEnd();
+
+    glDisable(GL_LINE_SMOOTH);
+    glDisable(GL_BLEND);
+    glEnable(GL_MULTISAMPLE);
 }
 
 void glDrawUnitAxes(void)