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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_shadow_blocked.h"
__kernel void kernel_ocl_path_trace_shadow_blocked(
ccl_global char *kg,
ccl_constant KernelData *data,
ccl_global PathState *PathState_coop, /* Required for shadow blocked */
ccl_global Ray *LightRay_dl_coop, /* Required for direct lighting's shadow blocked */
ccl_global Ray *LightRay_ao_coop, /* Required for AO's shadow blocked */
ccl_global char *ray_state,
ccl_global int *Queue_data, /* Queue memory */
ccl_global int *Queue_index, /* Tracks the number of elements in each queue */
int queuesize) /* Size (capacity) of each queue */
{
int lidx = get_local_id(1) * get_local_id(0) + get_local_id(0);
ccl_local unsigned int ao_queue_length;
ccl_local unsigned int dl_queue_length;
if(lidx == 0) {
ao_queue_length = Queue_index[QUEUE_SHADOW_RAY_CAST_AO_RAYS];
dl_queue_length = Queue_index[QUEUE_SHADOW_RAY_CAST_DL_RAYS];
}
barrier(CLK_LOCAL_MEM_FENCE);
/* flag determining if the current ray is to process shadow ray for AO or DL */
char shadow_blocked_type = -1;
int ray_index = QUEUE_EMPTY_SLOT;
int thread_index = get_global_id(1) * get_global_size(0) + get_global_id(0);
if(thread_index < ao_queue_length + dl_queue_length) {
if(thread_index < ao_queue_length) {
ray_index = get_ray_index(thread_index, QUEUE_SHADOW_RAY_CAST_AO_RAYS, Queue_data, queuesize, 1);
shadow_blocked_type = RAY_SHADOW_RAY_CAST_AO;
} else {
ray_index = get_ray_index(thread_index - ao_queue_length, QUEUE_SHADOW_RAY_CAST_DL_RAYS, Queue_data, queuesize, 1);
shadow_blocked_type = RAY_SHADOW_RAY_CAST_DL;
}
}
if(ray_index == QUEUE_EMPTY_SLOT)
return;
kernel_shadow_blocked((KernelGlobals *)kg,
PathState_coop,
LightRay_dl_coop,
LightRay_ao_coop,
ray_state,
shadow_blocked_type,
ray_index);
}
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