Fixed bug applying constraints for CustomIntegrator

platforms/opencl/src/kernels/customIntegrator.cl

@@ -15,7 +15,7 @@ __kernel void computeSum(__global const float* restrict sumBuffer, __global floa
 }
 
 __kernel void applyPositionDeltas(__global float4* restrict posq, __global float4* restrict posDelta) {
-    for (unsigned int index = get_local_id(0); index < NUM_ATOMS; index += get_global_size(0)) {
+    for (unsigned int index = get_global_id(0); index < NUM_ATOMS; index += get_global_size(0)) {
         float4 position = posq[index];
         position.xyz += posDelta[index].xyz;
         posq[index] = position;