diff options
Diffstat (limited to 'intern/cycles/kernel/kernels/opencl/kernel_direct_lighting.cl')
| -rw-r--r-- | intern/cycles/kernel/kernels/opencl/kernel_direct_lighting.cl | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/intern/cycles/kernel/kernels/opencl/kernel_direct_lighting.cl b/intern/cycles/kernel/kernels/opencl/kernel_direct_lighting.cl new file mode 100644 index 00000000000..6ec75013b3a --- /dev/null +++ b/intern/cycles/kernel/kernels/opencl/kernel_direct_lighting.cl @@ -0,0 +1,90 @@ +/* + * 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_direct_lighting.h" + +__kernel void kernel_ocl_path_trace_direct_lighting( + ccl_global char *globals, + ccl_constant KernelData *data, + ccl_global char *shader_data, /* Required for direct lighting */ + ccl_global char *shader_DL, /* Required for direct lighting */ + ccl_global uint *rng_coop, /* Required for direct lighting */ + ccl_global PathState *PathState_coop, /* Required for direct lighting */ + ccl_global int *ISLamp_coop, /* Required for direct lighting */ + ccl_global Ray *LightRay_coop, /* Required for direct lighting */ + ccl_global BsdfEval *BSDFEval_coop, /* Required for direct lighting */ + 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 */ +{ + 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); + + char enqueue_flag = 0; + 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); + +#ifdef __COMPUTE_DEVICE_GPU__ + /* If we are executing on a GPU device, we exit all threads that are not + * required. + * + * If we are executing on a CPU device, then we need to keep all threads + * active since we have barrier() calls later in the kernel. CPU devices, + * expect all threads to execute barrier statement. + */ + if(ray_index == QUEUE_EMPTY_SLOT) { + return; + } +#endif + +#ifndef __COMPUTE_DEVICE_GPU__ + if(ray_index != QUEUE_EMPTY_SLOT) { +#endif + enqueue_flag = kernel_direct_lighting(globals, + data, + shader_data, + shader_DL, + rng_coop, + PathState_coop, + ISLamp_coop, + LightRay_coop, + BSDFEval_coop, + ray_state, + ray_index); + +#ifndef __COMPUTE_DEVICE_GPU__ + } +#endif + +#ifdef __EMISSION__ + /* Enqueue RAY_SHADOW_RAY_CAST_DL rays. */ + enqueue_ray_index_local(ray_index, + QUEUE_SHADOW_RAY_CAST_DL_RAYS, + enqueue_flag, + queuesize, + &local_queue_atomics, + Queue_data, + Queue_index); +#endif +} |