diff options
Diffstat (limited to 'intern/cycles/kernel/split/kernel_shader_setup.h')
-rw-r--r-- | intern/cycles/kernel/split/kernel_shader_setup.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/intern/cycles/kernel/split/kernel_shader_setup.h b/intern/cycles/kernel/split/kernel_shader_setup.h new file mode 100644 index 00000000000..0432689d9fa --- /dev/null +++ b/intern/cycles/kernel/split/kernel_shader_setup.h @@ -0,0 +1,70 @@ +/* + * Copyright 2011-2017 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 sets up the ShaderData structure from the values computed + * by the previous kernels. + * + * It also identifies the rays of state RAY_TO_REGENERATE and enqueues them + * in QUEUE_HITBG_BUFF_UPDATE_TOREGEN_RAYS queue. + */ +ccl_device void kernel_shader_setup(KernelGlobals *kg, + ccl_local_param unsigned int *local_queue_atomics) +{ + /* Enqeueue RAY_TO_REGENERATE rays into QUEUE_HITBG_BUFF_UPDATE_TOREGEN_RAYS queue. */ + if(ccl_local_id(0) == 0 && ccl_local_id(1) == 0) { + *local_queue_atomics = 0; + } + ccl_barrier(CCL_LOCAL_MEM_FENCE); + + int ray_index = ccl_global_id(1) * ccl_global_size(0) + ccl_global_id(0); + int queue_index = kernel_split_params.queue_index[QUEUE_ACTIVE_AND_REGENERATED_RAYS]; + if(ray_index >= queue_index) { + return; + } + ray_index = get_ray_index(kg, ray_index, + QUEUE_ACTIVE_AND_REGENERATED_RAYS, + kernel_split_state.queue_data, + kernel_split_params.queue_size, + 0); + + if(ray_index == QUEUE_EMPTY_SLOT) { + return; + } + + char enqueue_flag = (IS_STATE(kernel_split_state.ray_state, ray_index, RAY_TO_REGENERATE)) ? 1 : 0; + enqueue_ray_index_local(ray_index, + QUEUE_HITBG_BUFF_UPDATE_TOREGEN_RAYS, + enqueue_flag, + kernel_split_params.queue_size, + local_queue_atomics, + kernel_split_state.queue_data, + kernel_split_params.queue_index); + + /* Continue on with shader evaluation. */ + if(IS_STATE(kernel_split_state.ray_state, ray_index, RAY_ACTIVE)) { + Intersection isect = kernel_split_state.isect[ray_index]; + Ray ray = kernel_split_state.ray[ray_index]; + + shader_setup_from_ray(kg, + &kernel_split_state.sd[ray_index], + &isect, + &ray); + } +} + +CCL_NAMESPACE_END |