Nikolay Sivov (@nsivov) commented about dlls/d2d1/d2d1_private.h:
struct d2d_transform_node {
- ID2D1TransformNode *node;
- BOOL effect_input;
- union
- {
ID2D1TransformNode *transform;
ID2D1Bitmap *bitmap;
- } u;
- struct d2d_transform_node **inputs;
- UINT32 input_count;
- struct d2d_transform_node *output;
- UINT32 output_to_index;
This one seems to be unused as well.