From f3035c9d8d5a643ee7e9e86a58688c4b2f86319c Mon Sep 17 00:00:00 2001
From: Adrian Kummerlaender
Date: Tue, 5 Nov 2019 23:20:44 +0100
Subject: Fix OpenCL vector indexing

---
 boltzgen/kernel/template/momenta_boundary.cl.mako | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/boltzgen/kernel/template/momenta_boundary.cl.mako b/boltzgen/kernel/template/momenta_boundary.cl.mako
index f22d950..9581a14 100644
--- a/boltzgen/kernel/template/momenta_boundary.cl.mako
+++ b/boltzgen/kernel/template/momenta_boundary.cl.mako
@@ -26,7 +26,7 @@ collision_subexpr, collision_assignment = model.collision(f_eq = model.equilibri
 <%call expr="momenta_boundary('velocity', [('%s%d' % (float_type, descriptor.d), 'velocity')])">
     ${float_type} ${sympy.ccode(moments_assignment[0])}
 % for i, expr in enumerate(moments_assignment[1:]):
-    ${float_type} ${expr.lhs} = velocity[${i}];
+    ${float_type} ${expr.lhs} = velocity.${['x','y','z'][i]};
 % endfor
 </%call>
 
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