forked from bartvdbraak/blender
57e26627c4
Decoupled ray marching is not supported yet. Transparent shadows are always enabled for volume rendering. Changes in kernel/bvh and kernel/geom are from Sergey. This simiplifies code significantly, and prepares it for record-all transparent shadow function in split kernel.
78 lines
2.7 KiB
C
78 lines
2.7 KiB
C
/*
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* Copyright 2011-2017 Blender Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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CCL_NAMESPACE_BEGIN
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ccl_device void kernel_indirect_subsurface(KernelGlobals *kg)
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{
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int thread_index = ccl_global_id(1) * ccl_global_size(0) + ccl_global_id(0);
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if(thread_index == 0) {
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/* We will empty both queues in this kernel. */
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kernel_split_params.queue_index[QUEUE_ACTIVE_AND_REGENERATED_RAYS] = 0;
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kernel_split_params.queue_index[QUEUE_HITBG_BUFF_UPDATE_TOREGEN_RAYS] = 0;
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}
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int ray_index;
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get_ray_index(kg, thread_index,
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QUEUE_ACTIVE_AND_REGENERATED_RAYS,
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kernel_split_state.queue_data,
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kernel_split_params.queue_size,
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1);
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ray_index = get_ray_index(kg, thread_index,
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QUEUE_HITBG_BUFF_UPDATE_TOREGEN_RAYS,
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kernel_split_state.queue_data,
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kernel_split_params.queue_size,
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1);
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#ifdef __SUBSURFACE__
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if(ray_index == QUEUE_EMPTY_SLOT) {
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return;
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}
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ccl_global char *ray_state = kernel_split_state.ray_state;
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ccl_global PathState *state = &kernel_split_state.path_state[ray_index];
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PathRadiance *L = &kernel_split_state.path_radiance[ray_index];
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ccl_global Ray *ray = &kernel_split_state.ray[ray_index];
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ccl_global float3 *throughput = &kernel_split_state.throughput[ray_index];
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if(IS_STATE(ray_state, ray_index, RAY_UPDATE_BUFFER)) {
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ccl_addr_space SubsurfaceIndirectRays *ss_indirect = &kernel_split_state.ss_rays[ray_index];
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kernel_path_subsurface_accum_indirect(ss_indirect, L);
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/* Trace indirect subsurface rays by restarting the loop. this uses less
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* stack memory than invoking kernel_path_indirect.
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*/
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if(ss_indirect->num_rays) {
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kernel_path_subsurface_setup_indirect(kg,
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ss_indirect,
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state,
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ray,
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L,
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throughput);
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ASSIGN_RAY_STATE(ray_state, ray_index, RAY_REGENERATED);
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}
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else {
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ASSIGN_RAY_STATE(ray_state, ray_index, RAY_UPDATE_BUFFER);
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}
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}
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#endif /* __SUBSURFACE__ */
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}
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CCL_NAMESPACE_END
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