Turn on polygon smoothing, in an attempt to get even smoother in the edges.

diff --git a/glpitch.cpp b/glpitch.cpp
index 4aea821ef3dde34acb33980d3094fac993e02b4f..e47e977f2b8743960b776e28c13f6a77947b574c 100644 (file)
--- a/glpitch.cpp
+++ b/glpitch.cpp
@@ -101,6 +101,8 @@ int main(void)
                        double peak_pos = find_display_pos(peak.first);
 
                        glBlendFunc(GL_SRC_ALPHA, GL_ONE);
+                       glEnable(GL_POLYGON_SMOOTH);
+
                        glBegin(GL_QUADS);      
                        glColor4f(0.0, 1.0f, 0.0f, 0.2f);
                        glVertex2f(peak_pos - 0.1, 0.0f);
@@ -108,6 +110,8 @@ int main(void)
                        glVertex2f(peak_pos + 0.1, 1.0f);
                        glVertex2f(peak_pos + 0.1, 0.0f);
                        glEnd();
+
+                       glDisable(GL_POLYGON_SMOOTH);
                }
 
                glColor4f(1.0f, 1.0f, 1.0f, 1.0f);