095a01a73a
Similar to what we did for area lights previously, this should help preserve stratification when using multiple BSDFs in theory. Improvements are not easily noticeable in practice though, because the number of BSDFs is usually low. Still nice to eliminate one sampling dimension.
61 lines
1.9 KiB
C
61 lines
1.9 KiB
C
/*
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* Copyright 2011-2017 Blender Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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CCL_NAMESPACE_BEGIN
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/* This kernel evaluates ShaderData structure from the values computed
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* by the previous kernels.
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*/
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ccl_device void kernel_shader_eval(KernelGlobals *kg)
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{
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int ray_index = ccl_global_id(1) * ccl_global_size(0) + ccl_global_id(0);
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/* Sorting on cuda split is not implemented */
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#ifdef __KERNEL_CUDA__
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int queue_index = kernel_split_params.queue_index[QUEUE_ACTIVE_AND_REGENERATED_RAYS];
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#else
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int queue_index = kernel_split_params.queue_index[QUEUE_SHADER_SORTED_RAYS];
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#endif
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if(ray_index >= queue_index) {
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return;
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}
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ray_index = get_ray_index(kg, ray_index,
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#ifdef __KERNEL_CUDA__
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QUEUE_ACTIVE_AND_REGENERATED_RAYS,
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#else
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QUEUE_SHADER_SORTED_RAYS,
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#endif
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kernel_split_state.queue_data,
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kernel_split_params.queue_size,
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0);
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if(ray_index == QUEUE_EMPTY_SLOT) {
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return;
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}
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ccl_global char *ray_state = kernel_split_state.ray_state;
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if(IS_STATE(ray_state, ray_index, RAY_ACTIVE)) {
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ccl_global PathState *state = &kernel_split_state.path_state[ray_index];
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shader_eval_surface(kg, &kernel_split_state.sd[ray_index], state, state->flag);
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#ifdef __BRANCHED_PATH__
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shader_merge_closures(&kernel_split_state.sd[ray_index]);
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#endif /* __BRANCHED_PATH__ */
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}
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}
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CCL_NAMESPACE_END
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