diff options
Diffstat (limited to 'intern/cycles/kernel/kernel_shader.h')
-rw-r--r-- | intern/cycles/kernel/kernel_shader.h | 31 |
1 files changed, 26 insertions, 5 deletions
diff --git a/intern/cycles/kernel/kernel_shader.h b/intern/cycles/kernel/kernel_shader.h index 3d9f787f267..e461e1642b6 100644 --- a/intern/cycles/kernel/kernel_shader.h +++ b/intern/cycles/kernel/kernel_shader.h @@ -1017,15 +1017,36 @@ ccl_device float3 shader_emissive_eval(ShaderData *sd) /* Holdout */ -ccl_device float3 shader_holdout_eval(KernelGlobals *kg, ShaderData *sd) +ccl_device float3 shader_holdout_apply(KernelGlobals *kg, ShaderData *sd) { float3 weight = make_float3(0.0f, 0.0f, 0.0f); - for (int i = 0; i < sd->num_closure; i++) { - ShaderClosure *sc = &sd->closure[i]; + /* For objects marked as holdout, preserve transparency and remove all other + * closures, replacing them with a holdout weight. */ + if (sd->object_flag & SD_OBJECT_HOLDOUT_MASK) { + if ((sd->flag & SD_TRANSPARENT) && !(sd->flag & SD_HAS_ONLY_VOLUME)) { + weight = make_float3(1.0f, 1.0f, 1.0f) - sd->closure_transparent_extinction; - if (CLOSURE_IS_HOLDOUT(sc->type)) - weight += sc->weight; + for (int i = 0; i < sd->num_closure; i++) { + ShaderClosure *sc = &sd->closure[i]; + if (!CLOSURE_IS_BSDF_TRANSPARENT(sc->type)) { + sc->type = NBUILTIN_CLOSURES; + } + } + + sd->flag &= ~(SD_CLOSURE_FLAGS - (SD_TRANSPARENT | SD_BSDF)); + } + else { + weight = make_float3(1.0f, 1.0f, 1.0f); + } + } + else { + for (int i = 0; i < sd->num_closure; i++) { + ShaderClosure *sc = &sd->closure[i]; + if (CLOSURE_IS_HOLDOUT(sc->type)) { + weight += sc->weight; + } + } } return weight; |