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| author | Mai Lavelle <mai.lavelle@gmail.com> | 2017-05-30 04:33:27 +0300 |
|---|---|---|
| committer | Mai Lavelle <mai.lavelle@gmail.com> | 2017-06-10 10:51:18 +0300 |
| commit | 6995b50e41e628d225b08c370db07d51cf8e3371 (patch) | |
| tree | 9219ed50f24b18732e84d9d4f6609e75f991a214 /intern/cycles/kernel/kernel_queues.h | |
| parent | 4360e8ce13ed4fcb14bdb091b59e9126e65fe616 (diff) | |
Cycles: Add function to dequeue a ray
Diffstat (limited to 'intern/cycles/kernel/kernel_queues.h')
| -rw-r--r-- | intern/cycles/kernel/kernel_queues.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/intern/cycles/kernel/kernel_queues.h b/intern/cycles/kernel/kernel_queues.h index 96bc636d5ac..e32d4bbbc1b 100644 --- a/intern/cycles/kernel/kernel_queues.h +++ b/intern/cycles/kernel/kernel_queues.h @@ -128,6 +128,21 @@ ccl_device unsigned int get_global_queue_index( return my_gqidx; } +ccl_device int dequeue_ray_index( + int queue_number, + ccl_global int *queues, + int queue_size, + ccl_global int *queue_index) +{ + int index = atomic_fetch_and_dec_uint32((ccl_global uint*)&queue_index[queue_number])-1; + + if(index < 0) { + return QUEUE_EMPTY_SLOT; + } + + return queues[index + queue_number * queue_size]; +} + CCL_NAMESPACE_END #endif // __KERNEL_QUEUE_H__ |