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-rw-r--r--progs/demos/engine.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/progs/demos/engine.c b/progs/demos/engine.c
index 14fd1e68629..af437e2f141 100644
--- a/progs/demos/engine.c
+++ b/progs/demos/engine.c
@@ -386,7 +386,10 @@ DrawPositionedPiston(const Engine *eng, float crankAngle)
glPushMatrix();
glRotatef(-90, 1, 0, 0);
glTranslatef(0, 0, pos);
- DrawPiston(eng);
+ if (eng->PistonList)
+ glCallList(eng->PistonList);
+ else
+ DrawPiston(eng);
glPopMatrix();
}