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diff --git a/intern/cycles/kernel/split/kernel_next_iteration_setup.h b/intern/cycles/kernel/split/kernel_next_iteration_setup.h
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-/*
- * 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 setting up ray for the next iteration of
- * path-iteration and accumulating radiance corresponding to AO and
- * direct-lighting
- *
- * 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_BUFF 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_BUFF, 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,
- * RAY_REGENERATED, RAY_UPDATE_BUFFER rays.
- * - QUEUE_HITBG_BUFF_UPDATE_TOREGEN_RAYS will be filled with
- * RAY_TO_REGENERATE and RAY_UPDATE_BUFFER rays.
- * At exit,
- * - QUEUE_ACTIVE_AND_REGENERATED_RAYS will be filled with RAY_ACTIVE,
- * RAY_REGENERATED and more RAY_UPDATE_BUFFER rays.
- * - QUEUE_HITBG_BUFF_UPDATE_TOREGEN_RAYS will be filled with
- * RAY_TO_REGENERATE and more RAY_UPDATE_BUFFER rays.
- */
-
-#ifdef __BRANCHED_PATH__
-ccl_device_inline void kernel_split_branched_indirect_light_init(KernelGlobals *kg, int ray_index)
-{
- kernel_split_branched_path_indirect_loop_init(kg, ray_index);
-
- ADD_RAY_FLAG(kernel_split_state.ray_state, ray_index, RAY_BRANCHED_LIGHT_INDIRECT);
-}
-
-ccl_device void kernel_split_branched_transparent_bounce(KernelGlobals *kg, int ray_index)
-{
- ccl_global float3 *throughput = &kernel_split_state.throughput[ray_index];
- ShaderData *sd = kernel_split_sd(sd, ray_index);
- ccl_global PathState *state = &kernel_split_state.path_state[ray_index];
- ccl_global Ray *ray = &kernel_split_state.ray[ray_index];
-
-# ifdef __VOLUME__
- if (!(sd->flag & SD_HAS_ONLY_VOLUME)) {
-# endif
- /* continue in case of transparency */
- *throughput *= shader_bsdf_transparency(kg, sd);
-
- if (is_zero(*throughput)) {
- kernel_split_path_end(kg, ray_index);
- return;
- }
-
- /* Update Path State */
- path_state_next(kg, state, LABEL_TRANSPARENT);
-# ifdef __VOLUME__
- }
- else {
- if (!path_state_volume_next(kg, state)) {
- kernel_split_path_end(kg, ray_index);
- return;
- }
- }
-# endif
-
- ray->P = ray_offset(sd->P, -sd->Ng);
- ray->t -= sd->ray_length; /* clipping works through transparent */
-
-# ifdef __RAY_DIFFERENTIALS__
- ray->dP = sd->dP;
- ray->dD.dx = -sd->dI.dx;
- ray->dD.dy = -sd->dI.dy;
-# endif /* __RAY_DIFFERENTIALS__ */
-
-# ifdef __VOLUME__
- /* enter/exit volume */
- kernel_volume_stack_enter_exit(kg, sd, state->volume_stack);
-# endif /* __VOLUME__ */
-}
-#endif /* __BRANCHED_PATH__ */
-
-ccl_device void kernel_next_iteration_setup(KernelGlobals *kg,
- ccl_local_param unsigned int *local_queue_atomics)
-{
- if (ccl_local_id(0) == 0 && ccl_local_id(1) == 0) {
- *local_queue_atomics = 0;
- }
- ccl_barrier(CCL_LOCAL_MEM_FENCE);
-
- if (ccl_global_id(0) == 0 && ccl_global_id(1) == 0) {
- /* If we are here, then it means that scene-intersect kernel
- * has already been executed at least once. From the next time,
- * scene-intersect kernel may operate on queues to fetch ray index
- */
- *kernel_split_params.use_queues_flag = 1;
-
- /* Mark queue indices of QUEUE_SHADOW_RAY_CAST_AO_RAYS and
- * QUEUE_SHADOW_RAY_CAST_DL_RAYS queues that were made empty during the
- * previous kernel.
- */
- kernel_split_params.queue_index[QUEUE_SHADOW_RAY_CAST_AO_RAYS] = 0;
- kernel_split_params.queue_index[QUEUE_SHADOW_RAY_CAST_DL_RAYS] = 0;
- }
-
- 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);
-
- ccl_global char *ray_state = kernel_split_state.ray_state;
-
-#ifdef __VOLUME__
- /* Reactivate only volume rays here, most surface work was skipped. */
- if (IS_STATE(ray_state, ray_index, RAY_HAS_ONLY_VOLUME)) {
- ASSIGN_RAY_STATE(ray_state, ray_index, RAY_ACTIVE);
- }
-#endif
-
- bool active = IS_STATE(ray_state, ray_index, RAY_ACTIVE);
- if (active) {
- ccl_global float3 *throughput = &kernel_split_state.throughput[ray_index];
- ccl_global Ray *ray = &kernel_split_state.ray[ray_index];
- ShaderData *sd = kernel_split_sd(sd, ray_index);
- ccl_global PathState *state = &kernel_split_state.path_state[ray_index];
- PathRadiance *L = &kernel_split_state.path_radiance[ray_index];
-
-#ifdef __BRANCHED_PATH__
- if (!kernel_data.integrator.branched || IS_FLAG(ray_state, ray_index, RAY_BRANCHED_INDIRECT)) {
-#endif
- /* Compute direct lighting and next bounce. */
- if (!kernel_path_surface_bounce(kg, sd, throughput, state, &L->state, ray)) {
- kernel_split_path_end(kg, ray_index);
- }
-#ifdef __BRANCHED_PATH__
- }
- else if (sd->flag & SD_HAS_ONLY_VOLUME) {
- kernel_split_branched_transparent_bounce(kg, ray_index);
- }
- else {
- kernel_split_branched_indirect_light_init(kg, ray_index);
-
- if (kernel_split_branched_path_surface_indirect_light_iter(
- kg, ray_index, 1.0f, kernel_split_sd(branched_state_sd, ray_index), true, true)) {
- ASSIGN_RAY_STATE(ray_state, ray_index, RAY_REGENERATED);
- }
- else {
- kernel_split_branched_path_indirect_loop_end(kg, ray_index);
- kernel_split_branched_transparent_bounce(kg, ray_index);
- }
- }
-#endif /* __BRANCHED_PATH__ */
- }
-
- /* Enqueue RAY_UPDATE_BUFFER rays. */
- enqueue_ray_index_local(ray_index,
- QUEUE_HITBG_BUFF_UPDATE_TOREGEN_RAYS,
- IS_STATE(ray_state, ray_index, RAY_UPDATE_BUFFER) && active,
- kernel_split_params.queue_size,
- local_queue_atomics,
- kernel_split_state.queue_data,
- kernel_split_params.queue_index);
-
-#ifdef __BRANCHED_PATH__
- /* iter loop */
- if (ccl_global_id(0) == 0 && ccl_global_id(1) == 0) {
- kernel_split_params.queue_index[QUEUE_LIGHT_INDIRECT_ITER] = 0;
- }
-
- ray_index = get_ray_index(kg,
- ccl_global_id(1) * ccl_global_size(0) + ccl_global_id(0),
- QUEUE_LIGHT_INDIRECT_ITER,
- kernel_split_state.queue_data,
- kernel_split_params.queue_size,
- 1);
-
- if (IS_STATE(ray_state, ray_index, RAY_LIGHT_INDIRECT_NEXT_ITER)) {
- /* for render passes, sum and reset indirect light pass variables
- * for the next samples */
- PathRadiance *L = &kernel_split_state.path_radiance[ray_index];
-
- path_radiance_sum_indirect(L);
- path_radiance_reset_indirect(L);
-
- if (kernel_split_branched_path_surface_indirect_light_iter(
- kg, ray_index, 1.0f, kernel_split_sd(branched_state_sd, ray_index), true, true)) {
- ASSIGN_RAY_STATE(ray_state, ray_index, RAY_REGENERATED);
- }
- else {
- kernel_split_branched_path_indirect_loop_end(kg, ray_index);
- kernel_split_branched_transparent_bounce(kg, ray_index);
- }
- }
-
-# ifdef __VOLUME__
- /* Enqueue RAY_VOLUME_INDIRECT_NEXT_ITER rays */
- ccl_barrier(CCL_LOCAL_MEM_FENCE);
- if (ccl_local_id(0) == 0 && ccl_local_id(1) == 0) {
- *local_queue_atomics = 0;
- }
- ccl_barrier(CCL_LOCAL_MEM_FENCE);
-
- ray_index = ccl_global_id(1) * ccl_global_size(0) + ccl_global_id(0);
- enqueue_ray_index_local(
- ray_index,
- QUEUE_VOLUME_INDIRECT_ITER,
- IS_STATE(kernel_split_state.ray_state, ray_index, RAY_VOLUME_INDIRECT_NEXT_ITER),
- kernel_split_params.queue_size,
- local_queue_atomics,
- kernel_split_state.queue_data,
- kernel_split_params.queue_index);
-
-# endif /* __VOLUME__ */
-
-# ifdef __SUBSURFACE__
- /* Enqueue RAY_SUBSURFACE_INDIRECT_NEXT_ITER rays */
- ccl_barrier(CCL_LOCAL_MEM_FENCE);
- if (ccl_local_id(0) == 0 && ccl_local_id(1) == 0) {
- *local_queue_atomics = 0;
- }
- ccl_barrier(CCL_LOCAL_MEM_FENCE);
-
- ray_index = ccl_global_id(1) * ccl_global_size(0) + ccl_global_id(0);
- enqueue_ray_index_local(
- ray_index,
- QUEUE_SUBSURFACE_INDIRECT_ITER,
- IS_STATE(kernel_split_state.ray_state, ray_index, RAY_SUBSURFACE_INDIRECT_NEXT_ITER),
- kernel_split_params.queue_size,
- local_queue_atomics,
- kernel_split_state.queue_data,
- kernel_split_params.queue_index);
-# endif /* __SUBSURFACE__ */
-#endif /* __BRANCHED_PATH__ */
-}
-
-CCL_NAMESPACE_END
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