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author | Hristo Gueorguiev <prem.nirved@gmail.com> | 2017-03-08 17:42:26 +0300 |
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committer | Sergey Sharybin <sergey.vfx@gmail.com> | 2017-03-09 19:09:37 +0300 |
commit | 57e26627c485baab63e108821b2712d5e234ae7c (patch) | |
tree | e3ee5aa4bf759121559c69504b77d600552bf527 /intern/cycles/kernel/kernel_path.h | |
parent | 6c942db30dee14eb37229879656fa049a9ac6df6 (diff) |
Cycles: SSS and Volume rendering in split kernel
Decoupled ray marching is not supported yet.
Transparent shadows are always enabled for volume rendering.
Changes in kernel/bvh and kernel/geom are from Sergey.
This simiplifies code significantly, and prepares it for
record-all transparent shadow function in split kernel.
Diffstat (limited to 'intern/cycles/kernel/kernel_path.h')
-rw-r--r-- | intern/cycles/kernel/kernel_path.h | 167 |
1 files changed, 1 insertions, 166 deletions
diff --git a/intern/cycles/kernel/kernel_path.h b/intern/cycles/kernel/kernel_path.h index 95c27850513..ebf03ad9778 100644 --- a/intern/cycles/kernel/kernel_path.h +++ b/intern/cycles/kernel/kernel_path.h @@ -46,6 +46,7 @@ #include "kernel_path_common.h" #include "kernel_path_surface.h" #include "kernel_path_volume.h" +#include "kernel_path_subsurface.h" #ifdef __KERNEL_DEBUG__ # include "kernel_debug.h" @@ -413,172 +414,6 @@ ccl_device void kernel_path_indirect(KernelGlobals *kg, } } -#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, - PathState *state, - RNG *rng, - Ray *ray, - float3 *throughput, - SubsurfaceIndirectRays *ss_indirect) -{ - float bssrdf_probability; - ShaderClosure *sc = subsurface_scatter_pick_closure(kg, sd, &bssrdf_probability); - - /* modify throughput for picking bssrdf or bsdf */ - *throughput *= bssrdf_probability; - - /* 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(!ss_indirect->tracing); - - uint lcg_state = lcg_state_init(rng, state, 0x68bc21eb); - - SubsurfaceIntersection ss_isect; - float bssrdf_u, bssrdf_v; - path_state_rng_2D(kg, rng, state, PRNG_BSDF_U, &bssrdf_u, &bssrdf_v); - int num_hits = subsurface_scatter_multi_intersect(kg, - &ss_isect, - sd, - sc, - &lcg_state, - bssrdf_u, bssrdf_v, - false); -# ifdef __VOLUME__ - ss_indirect->need_update_volume_stack = - kernel_data.integrator.use_volumes && - sd->object_flag & SD_OBJECT_INTERSECTS_VOLUME; -# endif /* __VOLUME__ */ - - /* 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, - state->flag, - sc, - false); - - PathState *hit_state = &ss_indirect->state[ss_indirect->num_rays]; - Ray *hit_ray = &ss_indirect->rays[ss_indirect->num_rays]; - float3 *hit_tp = &ss_indirect->throughputs[ss_indirect->num_rays]; - PathRadiance *hit_L = &ss_indirect->L[ss_indirect->num_rays]; - - *hit_state = *state; - *hit_ray = *ray; - *hit_tp = *throughput; - - hit_state->rng_offset += PRNG_BOUNCE_NUM; - - path_radiance_init(hit_L, kernel_data.film.use_light_pass); - hit_L->direct_throughput = L->direct_throughput; - path_radiance_copy_indirect(hit_L, L); - - kernel_path_surface_connect_light(kg, rng, sd, emission_sd, *hit_tp, state, hit_L); - - if(kernel_path_surface_bounce(kg, - rng, - sd, - hit_tp, - hit_state, - hit_L, - hit_ray)) - { -# ifdef __LAMP_MIS__ - hit_state->ray_t = 0.0f; -# endif /* __LAMP_MIS__ */ - -# ifdef __VOLUME__ - if(ss_indirect->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__ */ - path_radiance_reset_indirect(L); - ss_indirect->num_rays++; - } - else { - path_radiance_accum_sample(L, hit_L, 1); - } - } - return true; - } - return false; -} - -ccl_device_inline void kernel_path_subsurface_init_indirect( - SubsurfaceIndirectRays *ss_indirect) -{ - ss_indirect->tracing = false; - ss_indirect->num_rays = 0; -} - -ccl_device void kernel_path_subsurface_accum_indirect( - SubsurfaceIndirectRays *ss_indirect, - PathRadiance *L) -{ - if(ss_indirect->tracing) { - path_radiance_sum_indirect(L); - path_radiance_accum_sample(&ss_indirect->direct_L, L, 1); - if(ss_indirect->num_rays == 0) { - *L = ss_indirect->direct_L; - } - } -} - -ccl_device void kernel_path_subsurface_setup_indirect( - KernelGlobals *kg, - SubsurfaceIndirectRays *ss_indirect, - PathState *state, - Ray *ray, - PathRadiance *L, - float3 *throughput) -{ - if(!ss_indirect->tracing) { - ss_indirect->direct_L = *L; - } - ss_indirect->tracing = true; - - /* Setup state, ray and throughput for indirect SSS rays. */ - ss_indirect->num_rays--; - - Ray *indirect_ray = &ss_indirect->rays[ss_indirect->num_rays]; - PathRadiance *indirect_L = &ss_indirect->L[ss_indirect->num_rays]; - - *state = ss_indirect->state[ss_indirect->num_rays]; - *ray = *indirect_ray; - *L = *indirect_L; - *throughput = ss_indirect->throughputs[ss_indirect->num_rays]; - - state->rng_offset += ss_indirect->num_rays * PRNG_BOUNCE_NUM; -} - -#endif /* __SUBSURFACE__ */ ccl_device_inline float4 kernel_path_integrate(KernelGlobals *kg, RNG *rng, |