From http://www.jwz.org/xscreensaver/xscreensaver-5.16.tar.gz

[xscreensaver] / hacks / glx / endgame.c

diff --git a/hacks/glx/endgame.c b/hacks/glx/endgame.c
index 819ef5c1b222457d66073659ff80cc84c476c2e6..eabc91c81d0f3ad2a5e382014be667d69997bec2 100644 (file)
--- a/hacks/glx/endgame.c
+++ b/hacks/glx/endgame.c
@@ -309,6 +309,8 @@ static void drawMovingPiece(ModeInfo *mi, Chesscreen *cs, int shadow)
 {
   int piece = cs->mpiece % PIECES;
 
+  if (piece == NONE) return;
+
   glPushMatrix();
 
   if(shadow) glColor4fv(MaterialShadow);
@@ -632,11 +634,15 @@ static void display(ModeInfo *mi, Chesscreen *cs)
 
   glMatrixMode(GL_MODELVIEW);
   glLoadIdentity();
+  glRotatef(current_device_rotation(), 0, 0, 1);
 
   /** setup perspectiv */
   glTranslatef(0.0, 0.0, -1.5*BOARDSIZE);
   glRotatef(30.0, 1.0, 0.0, 0.0);
+  glRotatef(-current_device_rotation(), 0, 0, 1);
   gltrackball_rotate (cs->trackball);
+  glRotatef(current_device_rotation(), 0, 0, 1);
+
   glRotatef(cs->theta*100, 0.0, 1.0, 0.0);
   glTranslatef(-0.5*BOARDSIZE, 0.0, -0.5*BOARDSIZE);
 
@@ -784,8 +790,6 @@ ENTRYPOINT void init_chess(ModeInfo *mi)
   else
     MI_CLEARWINDOW(mi);
 
-  glClearColor(0.0, 0.0, 0.0, 0.0);
-
   if (!cs->wire) {
     glDepthFunc(GL_LEQUAL);
     glClearStencil(0);