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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.
*/
#include "split/kernel_scene_intersect.h"
__kernel void kernel_ocl_path_trace_scene_intersect(
ccl_global char *kg,
ccl_constant KernelData *data,
ccl_global uint *rng_coop,
ccl_global Ray *Ray_coop, /* Required for scene_intersect */
ccl_global PathState *PathState_coop, /* Required for scene_intersect */
Intersection *Intersection_coop, /* Required for scene_intersect */
ccl_global char *ray_state, /* Denotes the state of each ray */
int sw, int sh,
ccl_global int *Queue_data, /* Memory for queues */
ccl_global int *Queue_index, /* Tracks the number of elements in queues */
int queuesize, /* Size (capacity) of queues */
ccl_global char *use_queues_flag, /* used to decide if this kernel should use
* queues to fetch ray index */
#ifdef __KERNEL_DEBUG__
DebugData *debugdata_coop,
#endif
int parallel_samples) /* Number of samples to be processed in parallel */
{
int x = get_global_id(0);
int y = get_global_id(1);
/* Fetch use_queues_flag */
ccl_local char local_use_queues_flag;
if(get_local_id(0) == 0 && get_local_id(1) == 0) {
local_use_queues_flag = use_queues_flag[0];
}
barrier(CLK_LOCAL_MEM_FENCE);
int ray_index;
if(local_use_queues_flag) {
int thread_index = get_global_id(1) * get_global_size(0) + get_global_id(0);
ray_index = get_ray_index(thread_index,
QUEUE_ACTIVE_AND_REGENERATED_RAYS,
Queue_data,
queuesize,
0);
if(ray_index == QUEUE_EMPTY_SLOT) {
return;
}
} else {
if(x < (sw * parallel_samples) && y < sh) {
ray_index = x + y * (sw * parallel_samples);
} else {
return;
}
}
kernel_scene_intersect((KernelGlobals *)kg,
rng_coop,
Ray_coop,
PathState_coop,
Intersection_coop,
ray_state,
sw, sh,
use_queues_flag,
#ifdef __KERNEL_DEBUG__
debugdata_coop,
#endif
ray_index);
}
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