diff options
Diffstat (limited to 'intern/cycles/render/scene.cpp')
| -rw-r--r-- | intern/cycles/render/scene.cpp | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/intern/cycles/render/scene.cpp b/intern/cycles/render/scene.cpp index a4b030190dc..ecd6946bbf8 100644 --- a/intern/cycles/render/scene.cpp +++ b/intern/cycles/render/scene.cpp @@ -527,6 +527,8 @@ void Scene::update_kernel_features() const uint max_closures = (params.background) ? get_max_closure_count() : MAX_CLOSURE; dscene.data.max_closures = max_closures; dscene.data.max_shaders = shaders.size(); + + dscene.data.volume_stack_size = get_volume_stack_size(); } bool Scene::update(Progress &progress) @@ -642,6 +644,33 @@ int Scene::get_max_closure_count() return max_closure_global; } +int Scene::get_volume_stack_size() const +{ + /* Quick non-expensive check. Can over-estimate maximum possible nested level, but does not + * require expensive calculation during pre-processing. */ + int num_volume_objects = 0; + for (const Object *object : objects) { + if (object->check_is_volume()) { + ++num_volume_objects; + } + + if (num_volume_objects == MAX_VOLUME_STACK_SIZE) { + break; + } + } + + /* Count background world for the stack. */ + const Shader *background_shader = background->get_shader(this); + if (background_shader && background_shader->has_volume_connected) { + ++num_volume_objects; + } + + /* Space for terminator. */ + ++num_volume_objects; + + return min(num_volume_objects, MAX_VOLUME_STACK_SIZE); +} + bool Scene::has_shadow_catcher() { if (shadow_catcher_modified_) { |