static GLfloat terrain_color[4] = { 0.6, 0.8, 0.4, 1.0 };
static GLfloat terrain_ambient[4];
static GLfloat terrain_diffuse[4];
static GLfloat terrain_color[4] = { 0.6, 0.8, 0.4, 1.0 };
static GLfloat terrain_ambient[4];
static GLfloat terrain_diffuse[4];