1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
/*
* 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
ccl_device void kernel_indirect_subsurface(KernelGlobals *kg)
{
int thread_index = ccl_global_id(1) * ccl_global_size(0) + ccl_global_id(0);
if (thread_index == 0) {
/* We will empty both queues in this kernel. */
kernel_split_params.queue_index[QUEUE_ACTIVE_AND_REGENERATED_RAYS] = 0;
kernel_split_params.queue_index[QUEUE_HITBG_BUFF_UPDATE_TOREGEN_RAYS] = 0;
}
int ray_index;
get_ray_index(kg,
thread_index,
QUEUE_ACTIVE_AND_REGENERATED_RAYS,
kernel_split_state.queue_data,
kernel_split_params.queue_size,
1);
ray_index = get_ray_index(kg,
thread_index,
QUEUE_HITBG_BUFF_UPDATE_TOREGEN_RAYS,
kernel_split_state.queue_data,
kernel_split_params.queue_size,
1);
#ifdef __SUBSURFACE__
if (ray_index == QUEUE_EMPTY_SLOT) {
return;
}
ccl_global char *ray_state = kernel_split_state.ray_state;
ccl_global PathState *state = &kernel_split_state.path_state[ray_index];
PathRadiance *L = &kernel_split_state.path_radiance[ray_index];
ccl_global Ray *ray = &kernel_split_state.ray[ray_index];
ccl_global float3 *throughput = &kernel_split_state.throughput[ray_index];
if (IS_STATE(ray_state, ray_index, RAY_UPDATE_BUFFER)) {
ccl_addr_space SubsurfaceIndirectRays *ss_indirect = &kernel_split_state.ss_rays[ray_index];
/* Trace indirect subsurface rays by restarting the loop. this uses less
* stack memory than invoking kernel_path_indirect.
*/
if (ss_indirect->num_rays) {
kernel_path_subsurface_setup_indirect(kg, ss_indirect, state, ray, L, throughput);
ASSIGN_RAY_STATE(ray_state, ray_index, RAY_REGENERATED);
}
}
#endif /* __SUBSURFACE__ */
}
CCL_NAMESPACE_END
|
