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res_index modulation #708

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res_index modulation #708

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5ceb716
res_index modulation
Hexlord Apr 23, 2022
3cf5e5a
Fix sign warning
Hexlord Apr 23, 2022
ee70335
Switch from it to chain_it table
Hexlord Apr 24, 2022
4e7488e
Fix warning and improve salt for res_index
Hexlord Apr 24, 2022
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5 changes: 4 additions & 1 deletion src/iter.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1045,7 +1045,7 @@ bool ecs_worker_next_instanced(

ecs_iter_t *chain_it = it->chain_it;
ecs_worker_iter_t *iter = &it->priv.iter.worker;
int32_t res_count = iter->count, res_index = iter->index;
int32_t res_count = iter->count;
int32_t per_worker, instances_per_worker, first;

do {
Expand All @@ -1058,6 +1058,9 @@ bool ecs_worker_next_instanced(

/* Keep instancing setting from original iterator */
ECS_BIT_COND(it->flags, EcsIterIsInstanced, instanced);

uint64_t table_id = it->table ? it->table->id : 0;
int32_t res_index = (int32_t)((UINT64_C(11400714819323198485) * table_id + (uint64_t)iter->index) % (uint64_t)res_count);

int32_t count = it->count;
int32_t instance_count = it->instance_count;
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