1 files changed, 4 insertions, 0 deletions
diff --git a/source/blender/render/intern/pipeline.h b/source/blender/render/intern/pipeline.h
index 062df59bfd3..ba2e382619d 100644
--- a/source/blender/render/intern/pipeline.h
+++ b/source/blender/render/intern/pipeline.h
@@ -34,6 +34,10 @@ extern "C" {
 #endif
 
 struct RenderLayer *render_get_active_layer(struct Render *re, struct RenderResult *rr);
+/**
+ * Update some variables that can be animated, and otherwise wouldn't be due to
+ * #RenderData getting copied once at the start of animation render.
+ */
 void render_update_anim_renderdata(struct Render *re,
                                    struct RenderData *rd,
                                    struct ListBase *render_layers);