diff options
Diffstat (limited to 'intern/cycles/kernel/svm/svm_closure.h')
| -rw-r--r-- | intern/cycles/kernel/svm/svm_closure.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/intern/cycles/kernel/svm/svm_closure.h b/intern/cycles/kernel/svm/svm_closure.h index b5bd2b42cb4..a37646beb2e 100644 --- a/intern/cycles/kernel/svm/svm_closure.h +++ b/intern/cycles/kernel/svm/svm_closure.h @@ -306,6 +306,59 @@ __device void svm_node_closure_bsdf(KernelGlobals *kg, ShaderData *sd, float *st } break; } +#ifdef __SUBSURFACE__ + case CLOSURE_BSSRDF_ID: { + ShaderClosure *sc = &sd->closure[sd->num_closure]; + float3 weight = sc->weight * mix_weight; + float sample_weight = fabsf(average(weight)); + + if(sample_weight > 1e-5f && sd->num_closure+2 < MAX_CLOSURE) { + /* radius * scale */ + float3 radius = stack_load_float3(stack, data_node.w)*param1; + /* index of refraction */ + float eta = fmaxf(param2, 1.0f + 1e-5f); + + /* create one closure per color channel */ + if(fabsf(weight.x) > 0.0f) { + sc->weight = make_float3(weight.x, 0.0f, 0.0f); + sc->sample_weight = sample_weight; + sc->data0 = radius.x; + sc->data1 = eta; + sc->N = N; + sd->flag |= bssrdf_setup(sc); + + sd->num_closure++; + sc++; + } + + if(fabsf(weight.y) > 0.0f) { + sc->weight = make_float3(0.0f, weight.y, 0.0f); + sc->sample_weight = sample_weight; + sc->data0 = radius.y; + sc->data1 = eta; + sc->N = N; + sd->flag |= bssrdf_setup(sc); + + sd->num_closure++; + sc++; + } + + if(fabsf(weight.z) > 0.0f) { + sc->weight = make_float3(0.0f, 0.0f, weight.z); + sc->sample_weight = sample_weight; + sc->data0 = radius.z; + sc->data1 = eta; + sc->N = N; + sd->flag |= bssrdf_setup(sc); + + sd->num_closure++; + sc++; + } + } + + break; + } +#endif default: break; } |