diff options
Diffstat (limited to 'intern/cycles/kernel/kernel_path_subsurface.h')
| -rw-r--r-- | intern/cycles/kernel/kernel_path_subsurface.h | 139 |
1 files changed, 0 insertions, 139 deletions
diff --git a/intern/cycles/kernel/kernel_path_subsurface.h b/intern/cycles/kernel/kernel_path_subsurface.h deleted file mode 100644 index 97d3f292ca3..00000000000 --- a/intern/cycles/kernel/kernel_path_subsurface.h +++ /dev/null @@ -1,139 +0,0 @@ -/* - * Copyright 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 - -#ifdef __SUBSURFACE__ -# ifndef __KERNEL_CUDA__ -ccl_device -# else -ccl_device_inline -# endif - bool - kernel_path_subsurface_scatter(KernelGlobals *kg, - ShaderData *sd, - ShaderData *emission_sd, - PathRadiance *L, - ccl_addr_space PathState *state, - ccl_addr_space Ray *ray, - ccl_addr_space float3 *throughput, - ccl_addr_space SubsurfaceIndirectRays *ss_indirect) -{ - PROFILING_INIT(kg, PROFILING_SUBSURFACE); - - float bssrdf_u, bssrdf_v; - path_state_rng_2D(kg, state, PRNG_BSDF_U, &bssrdf_u, &bssrdf_v); - - const ShaderClosure *sc = shader_bssrdf_pick(sd, throughput, &bssrdf_u); - - /* do bssrdf scatter step if we picked a bssrdf closure */ - if (sc) { - /* We should never have two consecutive BSSRDF bounces, - * the second one should be converted to a diffuse BSDF to - * avoid this. - */ - kernel_assert(!(state->flag & PATH_RAY_DIFFUSE_ANCESTOR)); - - uint lcg_state = lcg_state_init_addrspace(state, 0x68bc21eb); - - LocalIntersection ss_isect; - int num_hits = subsurface_scatter_multi_intersect( - kg, &ss_isect, sd, state, sc, &lcg_state, bssrdf_u, bssrdf_v, false); -# ifdef __VOLUME__ - bool need_update_volume_stack = kernel_data.integrator.use_volumes && - sd->object_flag & SD_OBJECT_INTERSECTS_VOLUME; -# endif /* __VOLUME__ */ - - /* Closure memory will be overwritten, so read required variables now. */ - Bssrdf *bssrdf = (Bssrdf *)sc; - ClosureType bssrdf_type = sc->type; - float bssrdf_roughness = bssrdf->roughness; - - /* compute lighting with the BSDF closure */ - for (int hit = 0; hit < num_hits; hit++) { - /* NOTE: We reuse the existing ShaderData, we assume the path - * integration loop stops when this function returns true. - */ - subsurface_scatter_multi_setup(kg, &ss_isect, hit, sd, state, bssrdf_type, bssrdf_roughness); - - kernel_path_surface_connect_light(kg, sd, emission_sd, *throughput, state, L); - - ccl_addr_space PathState *hit_state = &ss_indirect->state[ss_indirect->num_rays]; - ccl_addr_space Ray *hit_ray = &ss_indirect->rays[ss_indirect->num_rays]; - ccl_addr_space float3 *hit_tp = &ss_indirect->throughputs[ss_indirect->num_rays]; - PathRadianceState *hit_L_state = &ss_indirect->L_state[ss_indirect->num_rays]; - - *hit_state = *state; - *hit_ray = *ray; - *hit_tp = *throughput; - *hit_L_state = L->state; - - hit_state->rng_offset += PRNG_BOUNCE_NUM; - - if (kernel_path_surface_bounce(kg, sd, hit_tp, hit_state, hit_L_state, hit_ray)) { -# ifdef __LAMP_MIS__ - hit_state->ray_t = 0.0f; -# endif /* __LAMP_MIS__ */ - -# ifdef __VOLUME__ - if (need_update_volume_stack) { - Ray volume_ray = *ray; - /* Setup ray from previous surface point to the new one. */ - volume_ray.D = normalize_len(hit_ray->P - volume_ray.P, &volume_ray.t); - - kernel_volume_stack_update_for_subsurface( - kg, emission_sd, &volume_ray, hit_state->volume_stack); - } -# endif /* __VOLUME__ */ - ss_indirect->num_rays++; - } - } - return true; - } - return false; -} - -ccl_device_inline void kernel_path_subsurface_init_indirect( - ccl_addr_space SubsurfaceIndirectRays *ss_indirect) -{ - ss_indirect->num_rays = 0; -} - -ccl_device void kernel_path_subsurface_setup_indirect( - KernelGlobals *kg, - ccl_addr_space SubsurfaceIndirectRays *ss_indirect, - ccl_addr_space PathState *state, - ccl_addr_space Ray *ray, - PathRadiance *L, - ccl_addr_space float3 *throughput) -{ - /* Setup state, ray and throughput for indirect SSS rays. */ - ss_indirect->num_rays--; - - path_radiance_sum_indirect(L); - path_radiance_reset_indirect(L); - - *state = ss_indirect->state[ss_indirect->num_rays]; - *ray = ss_indirect->rays[ss_indirect->num_rays]; - L->state = ss_indirect->L_state[ss_indirect->num_rays]; - *throughput = ss_indirect->throughputs[ss_indirect->num_rays]; - - state->rng_offset += ss_indirect->num_rays * PRNG_BOUNCE_NUM; -} - -#endif /* __SUBSURFACE__ */ - -CCL_NAMESPACE_END |