http://www.archive.org/download/tucows_10294_XScreenSaver/xscreensaver-4.10.tar.gz

[xscreensaver] / hacks / glx / lavalite.c

diff --git a/hacks/glx/lavalite.c b/hacks/glx/lavalite.c
index 8c653287321ab0a207fc5cc5aab7e94d6f928d24..8c2d800c2f4b353daeee0d39ab4bfa430dc39943 100644 (file)
--- a/hacks/glx/lavalite.c
+++ b/hacks/glx/lavalite.c
@@ -899,7 +899,7 @@ max_bottle_radius (lavalite_configuration *bp)
 static GLfloat
 bottle_radius_at (lavalite_configuration *bp, GLfloat z)
 {
-  GLfloat topz = -999, botz = -999, topr, botr;
+  GLfloat topz = -999, botz = -999, topr = 0, botr = 0;
   lamp_geometry *slice;
   GLfloat ratio;
 
@@ -1237,7 +1237,10 @@ animate_lava (ModeInfo *mi)
 
   mi->polygon_count = 0;
   {
-    double s = 1.0/bp->grid_size;
+    double s;
+    if (bp->grid_size == 0) bp->grid_size = 1;  /* first time through */
+    s = 1.0/bp->grid_size;
+
     glPushMatrix();
     glTranslatef (-0.5, -0.5, 0);
     glScalef (s, s, s);