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);
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);