diff options
Diffstat (limited to 'intern/cycles/kernel/split/kernel_queue_enqueue.h')
| -rw-r--r-- | intern/cycles/kernel/split/kernel_queue_enqueue.h | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/intern/cycles/kernel/split/kernel_queue_enqueue.h b/intern/cycles/kernel/split/kernel_queue_enqueue.h new file mode 100644 index 00000000000..66ce2dfb6f1 --- /dev/null +++ b/intern/cycles/kernel/split/kernel_queue_enqueue.h @@ -0,0 +1,91 @@ +/* + * Copyright 2011-2016 Blender Foundation + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +CCL_NAMESPACE_BEGIN + +/* This kernel enqueues rays of different ray state into their + * appropriate queues: + * + * 1. Rays that have been determined to hit the background from the + * "kernel_scene_intersect" kernel are enqueued in + * QUEUE_HITBG_BUFF_UPDATE_TOREGEN_RAYS; + * 2. Rays that have been determined to be actively participating in pat + * -iteration will be enqueued into QUEUE_ACTIVE_AND_REGENERATED_RAYS. + * + * State of queue during other times this kernel is called: + * At entry, + * - QUEUE_ACTIVE_AND_REGENERATED_RAYS will be empty. + * - QUEUE_HITBG_BUFF_UPDATE_TOREGEN_RAYS will contain RAY_TO_REGENERATE + * and RAY_UPDATE_BUFFER rays. + * At exit, + * - QUEUE_ACTIVE_AND_REGENERATED_RAYS will be filled with RAY_ACTIVE rays. + * - QUEUE_HITBG_BUFF_UPDATE_TOREGEN_RAYS will be filled with + * RAY_TO_REGENERATE, RAY_UPDATE_BUFFER, RAY_HIT_BACKGROUND rays. + */ +ccl_device void kernel_queue_enqueue(KernelGlobals *kg, + ccl_local_param QueueEnqueueLocals *locals) +{ + /* We have only 2 cases (Hit/Not-Hit) */ + int lidx = ccl_local_id(1) * ccl_local_size(0) + ccl_local_id(0); + int ray_index = ccl_global_id(1) * ccl_global_size(0) + ccl_global_id(0); + + if(lidx == 0) { + locals->queue_atomics[0] = 0; + locals->queue_atomics[1] = 0; + } + ccl_barrier(CCL_LOCAL_MEM_FENCE); + + int queue_number = -1; + + if(IS_STATE(kernel_split_state.ray_state, ray_index, RAY_HIT_BACKGROUND) || + IS_STATE(kernel_split_state.ray_state, ray_index, RAY_UPDATE_BUFFER) || + IS_STATE(kernel_split_state.ray_state, ray_index, RAY_TO_REGENERATE)) { + queue_number = QUEUE_HITBG_BUFF_UPDATE_TOREGEN_RAYS; + } + else if(IS_STATE(kernel_split_state.ray_state, ray_index, RAY_ACTIVE) || + IS_STATE(kernel_split_state.ray_state, ray_index, RAY_REGENERATED)) { + queue_number = QUEUE_ACTIVE_AND_REGENERATED_RAYS; + } + + unsigned int my_lqidx; + if(queue_number != -1) { + my_lqidx = get_local_queue_index(queue_number, locals->queue_atomics); + } + ccl_barrier(CCL_LOCAL_MEM_FENCE); + + if(lidx == 0) { + locals->queue_atomics[QUEUE_ACTIVE_AND_REGENERATED_RAYS] = + get_global_per_queue_offset(QUEUE_ACTIVE_AND_REGENERATED_RAYS, + locals->queue_atomics, + kernel_split_params.queue_index); + locals->queue_atomics[QUEUE_HITBG_BUFF_UPDATE_TOREGEN_RAYS] = + get_global_per_queue_offset(QUEUE_HITBG_BUFF_UPDATE_TOREGEN_RAYS, + locals->queue_atomics, + kernel_split_params.queue_index); + } + ccl_barrier(CCL_LOCAL_MEM_FENCE); + + unsigned int my_gqidx; + if(queue_number != -1) { + my_gqidx = get_global_queue_index(queue_number, + kernel_split_params.queue_size, + my_lqidx, + locals->queue_atomics); + kernel_split_state.queue_data[my_gqidx] = ray_index; + } +} + +CCL_NAMESPACE_END |