diff options
Diffstat (limited to 'intern/cycles/kernel/split/kernel_holdout_emission_blurring_pathtermination_ao.h')
| -rw-r--r-- | intern/cycles/kernel/split/kernel_holdout_emission_blurring_pathtermination_ao.h | 149 |
1 files changed, 0 insertions, 149 deletions
diff --git a/intern/cycles/kernel/split/kernel_holdout_emission_blurring_pathtermination_ao.h b/intern/cycles/kernel/split/kernel_holdout_emission_blurring_pathtermination_ao.h deleted file mode 100644 index 61722840b0b..00000000000 --- a/intern/cycles/kernel/split/kernel_holdout_emission_blurring_pathtermination_ao.h +++ /dev/null @@ -1,149 +0,0 @@ -/* - * Copyright 2011-2015 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 takes care of the logic to process "material of type holdout", - * indirect primitive emission, bsdf blurring, probabilistic path termination - * and AO. - * - * This kernels determines the rays for which a shadow_blocked() function - * associated with AO should be executed. Those rays for which a - * shadow_blocked() function for AO must be executed are marked with flag - * RAY_SHADOW_RAY_CAST_ao and enqueued into the queue - * QUEUE_SHADOW_RAY_CAST_AO_RAYS - * - * Ray state of rays that are terminated in this kernel are changed to RAY_UPDATE_BUFFER - * - * Note on Queues: - * This kernel fetches rays from the queue QUEUE_ACTIVE_AND_REGENERATED_RAYS - * and processes only the rays of state RAY_ACTIVE. - * There are different points in this kernel where a ray may terminate and - * reach RAY_UPDATE_BUFFER state. These rays are enqueued into - * QUEUE_HITBG_BUFF_UPDATE_TOREGEN_RAYS queue. These rays will still be present - * in QUEUE_ACTIVE_AND_REGENERATED_RAYS queue, but since their ray-state has - * been changed to RAY_UPDATE_BUFFER, there is no problem. - * - * State of queues when this kernel is called: - * At entry, - * - QUEUE_ACTIVE_AND_REGENERATED_RAYS will be filled with RAY_ACTIVE and - * RAY_REGENERATED rays - * - QUEUE_HITBG_BUFF_UPDATE_TOREGEN_RAYS will be filled with - * RAY_TO_REGENERATE rays. - * - QUEUE_SHADOW_RAY_CAST_AO_RAYS will be empty. - * At exit, - * - QUEUE_ACTIVE_AND_REGENERATED_RAYS will be filled with RAY_ACTIVE, - * RAY_REGENERATED and RAY_UPDATE_BUFFER rays. - * - QUEUE_HITBG_BUFF_UPDATE_TOREGEN_RAYS will be filled with - * RAY_TO_REGENERATE and RAY_UPDATE_BUFFER rays. - * - QUEUE_SHADOW_RAY_CAST_AO_RAYS will be filled with rays marked with - * flag RAY_SHADOW_RAY_CAST_AO - */ - -ccl_device void kernel_holdout_emission_blurring_pathtermination_ao( - KernelGlobals *kg, ccl_local_param BackgroundAOLocals *locals) -{ - if (ccl_local_id(0) == 0 && ccl_local_id(1) == 0) { - locals->queue_atomics_bg = 0; - locals->queue_atomics_ao = 0; - } - ccl_barrier(CCL_LOCAL_MEM_FENCE); - -#ifdef __AO__ - char enqueue_flag = 0; -#endif - int ray_index = ccl_global_id(1) * ccl_global_size(0) + ccl_global_id(0); - 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) { - ccl_global PathState *state = 0x0; - float3 throughput; - - ccl_global char *ray_state = kernel_split_state.ray_state; - ShaderData *sd = kernel_split_sd(sd, ray_index); - - if (IS_STATE(ray_state, ray_index, RAY_ACTIVE)) { - uint buffer_offset = kernel_split_state.buffer_offset[ray_index]; - ccl_global float *buffer = kernel_split_params.tile.buffer + buffer_offset; - - ccl_global Ray *ray = &kernel_split_state.ray[ray_index]; - ShaderData *emission_sd = AS_SHADER_DATA(&kernel_split_state.sd_DL_shadow[ray_index]); - PathRadiance *L = &kernel_split_state.path_radiance[ray_index]; - - throughput = kernel_split_state.throughput[ray_index]; - state = &kernel_split_state.path_state[ray_index]; - - if (!kernel_path_shader_apply(kg, sd, state, ray, throughput, emission_sd, L, buffer)) { - kernel_split_path_end(kg, ray_index); - } - } - - if (IS_STATE(ray_state, ray_index, RAY_ACTIVE)) { - /* Path termination. this is a strange place to put the termination, it's - * mainly due to the mixed in MIS that we use. gives too many unneeded - * shader evaluations, only need emission if we are going to terminate. - */ - float probability = path_state_continuation_probability(kg, state, throughput); - - if (probability == 0.0f) { - kernel_split_path_end(kg, ray_index); - } - else if (probability < 1.0f) { - float terminate = path_state_rng_1D(kg, state, PRNG_TERMINATE); - if (terminate >= probability) { - kernel_split_path_end(kg, ray_index); - } - else { - kernel_split_state.throughput[ray_index] = throughput / probability; - } - } - -#ifdef __DENOISING_FEATURES__ - if (IS_STATE(ray_state, ray_index, RAY_ACTIVE)) { - PathRadiance *L = &kernel_split_state.path_radiance[ray_index]; - kernel_update_denoising_features(kg, sd, state, L); - } -#endif - } - -#ifdef __AO__ - if (IS_STATE(ray_state, ray_index, RAY_ACTIVE)) { - /* ambient occlusion */ - if (kernel_data.integrator.use_ambient_occlusion) { - enqueue_flag = 1; - } - } -#endif /* __AO__ */ - } - -#ifdef __AO__ - /* Enqueue to-shadow-ray-cast rays. */ - enqueue_ray_index_local(ray_index, - QUEUE_SHADOW_RAY_CAST_AO_RAYS, - enqueue_flag, - kernel_split_params.queue_size, - &locals->queue_atomics_ao, - kernel_split_state.queue_data, - kernel_split_params.queue_index); -#endif -} - -CCL_NAMESPACE_END |