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/*
* 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
/* This kernel evaluates ShaderData structure from the values computed
* by the previous kernels.
*/
ccl_device void kernel_shader_eval(KernelGlobals *kg)
{
int ray_index = ccl_global_id(1) * ccl_global_size(0) + ccl_global_id(0);
/* Sorting on cuda split is not implemented */
#ifdef __KERNEL_CUDA__
int queue_index = kernel_split_params.queue_index[QUEUE_ACTIVE_AND_REGENERATED_RAYS];
#else
int queue_index = kernel_split_params.queue_index[QUEUE_SHADER_SORTED_RAYS];
#endif
if (ray_index >= queue_index) {
return;
}
ray_index = get_ray_index(kg,
ray_index,
#ifdef __KERNEL_CUDA__
QUEUE_ACTIVE_AND_REGENERATED_RAYS,
#else
QUEUE_SHADER_SORTED_RAYS,
#endif
kernel_split_state.queue_data,
kernel_split_params.queue_size,
0);
if (ray_index == QUEUE_EMPTY_SLOT) {
return;
}
ccl_global char *ray_state = kernel_split_state.ray_state;
if (IS_STATE(ray_state, ray_index, RAY_ACTIVE)) {
ccl_global PathState *state = &kernel_split_state.path_state[ray_index];
uint buffer_offset = kernel_split_state.buffer_offset[ray_index];
ccl_global float *buffer = kernel_split_params.tile.buffer + buffer_offset;
shader_eval_surface(kg, kernel_split_sd(sd, ray_index), state, buffer, state->flag);
#ifdef __BRANCHED_PATH__
if (kernel_data.integrator.branched) {
shader_merge_closures(kernel_split_sd(sd, ray_index));
}
else
#endif
{
shader_prepare_closures(kernel_split_sd(sd, ray_index), state);
}
}
}
CCL_NAMESPACE_END
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