diff options
Diffstat (limited to 'intern/cycles/kernel/split/kernel_direct_lighting.h')
| -rw-r--r-- | intern/cycles/kernel/split/kernel_direct_lighting.h | 152 |
1 files changed, 0 insertions, 152 deletions
diff --git a/intern/cycles/kernel/split/kernel_direct_lighting.h b/intern/cycles/kernel/split/kernel_direct_lighting.h deleted file mode 100644 index 3be2b35812f..00000000000 --- a/intern/cycles/kernel/split/kernel_direct_lighting.h +++ /dev/null @@ -1,152 +0,0 @@ -/* - * 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. - */ - -CCL_NAMESPACE_BEGIN - -/* This kernel takes care of direct lighting logic. - * However, the "shadow ray cast" part of direct lighting is handled - * in the next kernel. - * - * This kernels determines the rays for which a shadow_blocked() function - * associated with direct lighting should be executed. Those rays for which - * a shadow_blocked() function for direct-lighting must be executed, are - * marked with flag RAY_SHADOW_RAY_CAST_DL and enqueued into the queue - * QUEUE_SHADOW_RAY_CAST_DL_RAYS - * - * Note on Queues: - * This kernel only reads from the QUEUE_ACTIVE_AND_REGENERATED_RAYS queue - * and processes only the rays of state RAY_ACTIVE; If a ray needs to execute - * the corresponding shadow_blocked part, after direct lighting, the ray is - * marked with RAY_SHADOW_RAY_CAST_DL flag. - * - * State of queues when this kernel is called: - * - State of queues QUEUE_ACTIVE_AND_REGENERATED_RAYS and - * QUEUE_HITBG_BUFF_UPDATE_TOREGEN_RAYS will be same before and after this - * kernel call. - * - QUEUE_SHADOW_RAY_CAST_DL_RAYS queue will be filled with rays for which a - * shadow_blocked function must be executed, after this kernel call - * Before this kernel call the QUEUE_SHADOW_RAY_CAST_DL_RAYS will be empty. - */ -ccl_device void kernel_direct_lighting(KernelGlobals *kg, - ccl_local_param unsigned int *local_queue_atomics) -{ - if (ccl_local_id(0) == 0 && ccl_local_id(1) == 0) { - *local_queue_atomics = 0; - } - ccl_barrier(CCL_LOCAL_MEM_FENCE); - - char enqueue_flag = 0; - int ray_index = ccl_global_id(1) * ccl_global_size(0) + ccl_global_id(0); - ray_index = get_ray_index(kg, - ray_index, - QUEUE_ACTIVE_AND_REGENERATED_RAYS, - kernel_split_state.queue_data, - kernel_split_params.queue_size, - 0); - - if (IS_STATE(kernel_split_state.ray_state, ray_index, RAY_ACTIVE)) { - ccl_global PathState *state = &kernel_split_state.path_state[ray_index]; - ShaderData *sd = kernel_split_sd(sd, ray_index); - - /* direct lighting */ -#ifdef __EMISSION__ - bool flag = (kernel_data.integrator.use_direct_light && (sd->flag & SD_BSDF_HAS_EVAL)); - -# ifdef __BRANCHED_PATH__ - if (flag && kernel_data.integrator.branched) { - flag = false; - enqueue_flag = 1; - } -# endif /* __BRANCHED_PATH__ */ - -# ifdef __SHADOW_TRICKS__ - if (flag && state->flag & PATH_RAY_SHADOW_CATCHER) { - flag = false; - enqueue_flag = 1; - } -# endif /* __SHADOW_TRICKS__ */ - - if (flag) { - /* Sample illumination from lights to find path contribution. */ - float light_u, light_v; - path_state_rng_2D(kg, state, PRNG_LIGHT_U, &light_u, &light_v); - float terminate = path_state_rng_light_termination(kg, state); - - LightSample ls; - if (light_sample(kg, -1, light_u, light_v, sd->time, sd->P, state->bounce, &ls)) { - Ray light_ray; - light_ray.time = sd->time; - - BsdfEval L_light; - bool is_lamp; - if (direct_emission(kg, - sd, - AS_SHADER_DATA(&kernel_split_state.sd_DL_shadow[ray_index]), - &ls, - state, - &light_ray, - &L_light, - &is_lamp, - terminate)) { - /* Write intermediate data to global memory to access from - * the next kernel. - */ - kernel_split_state.light_ray[ray_index] = light_ray; - kernel_split_state.bsdf_eval[ray_index] = L_light; - kernel_split_state.is_lamp[ray_index] = is_lamp; - /* Mark ray state for next shadow kernel. */ - enqueue_flag = 1; - } - } - } -#endif /* __EMISSION__ */ - } - -#ifdef __EMISSION__ - /* Enqueue RAY_SHADOW_RAY_CAST_DL rays. */ - enqueue_ray_index_local(ray_index, - QUEUE_SHADOW_RAY_CAST_DL_RAYS, - enqueue_flag, - kernel_split_params.queue_size, - local_queue_atomics, - kernel_split_state.queue_data, - kernel_split_params.queue_index); -#endif - -#ifdef __BRANCHED_PATH__ - /* Enqueue RAY_LIGHT_INDIRECT_NEXT_ITER rays - * this is the last kernel before next_iteration_setup that uses local atomics so we do this here - */ - ccl_barrier(CCL_LOCAL_MEM_FENCE); - if (ccl_local_id(0) == 0 && ccl_local_id(1) == 0) { - *local_queue_atomics = 0; - } - ccl_barrier(CCL_LOCAL_MEM_FENCE); - - ray_index = ccl_global_id(1) * ccl_global_size(0) + ccl_global_id(0); - enqueue_ray_index_local( - ray_index, - QUEUE_LIGHT_INDIRECT_ITER, - IS_STATE(kernel_split_state.ray_state, ray_index, RAY_LIGHT_INDIRECT_NEXT_ITER), - kernel_split_params.queue_size, - local_queue_atomics, - kernel_split_state.queue_data, - kernel_split_params.queue_index); - -#endif /* __BRANCHED_PATH__ */ -} - -CCL_NAMESPACE_END |