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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_shader_eval.h"
__kernel void kernel_ocl_path_trace_shader_eval(
ccl_global char *kg,
ccl_constant KernelData *data,
ccl_global char *sd, /* Output ShaderData structure to be filled */
ccl_global uint *rng_coop, /* Required for rbsdf calculation */
ccl_global Ray *Ray_coop, /* Required for setting up shader from ray */
ccl_global PathState *PathState_coop, /* Required for all functions in this kernel */
Intersection *Intersection_coop, /* Required for setting up shader from ray */
ccl_global char *ray_state, /* Denotes the state of each ray */
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 */
{
/* Enqeueue RAY_TO_REGENERATE rays into QUEUE_HITBG_BUFF_UPDATE_TOREGEN_RAYS queue. */
ccl_local unsigned int local_queue_atomics;
if(get_local_id(0) == 0 && get_local_id(1) == 0) {
local_queue_atomics = 0;
}
barrier(CLK_LOCAL_MEM_FENCE);
int ray_index = get_global_id(1) * get_global_size(0) + get_global_id(0);
ray_index = get_ray_index(ray_index,
QUEUE_ACTIVE_AND_REGENERATED_RAYS,
Queue_data,
queuesize,
0);
if(ray_index == QUEUE_EMPTY_SLOT) {
return;
}
char enqueue_flag = (IS_STATE(ray_state, ray_index, RAY_TO_REGENERATE)) ? 1 : 0;
enqueue_ray_index_local(ray_index,
QUEUE_HITBG_BUFF_UPDATE_TOREGEN_RAYS,
enqueue_flag,
queuesize,
&local_queue_atomics,
Queue_data,
Queue_index);
/* Continue on with shader evaluation. */
kernel_shader_eval((KernelGlobals *)kg,
(ShaderData *)sd,
rng_coop,
Ray_coop,
PathState_coop,
Intersection_coop,
ray_state,
ray_index);
}
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