A support transform for effects to modify the output rectangle of the previous effect or bitmap.
The ID2D1BoundsAdjustmentTransform interface inherits from the IUnknown interface. ID2D1BoundsAdjustmentTransform also has these types of members:
The ID2D1BoundsAdjustmentTransform interface has these methods.
Returns the output rectangle of the support transform.
This sets the output bounds for the support transform.
The support transform can be used for two different reasons.
To indicate that a region of its input image is already transparent black. The expanded area will be treated as transparent black.
This can increase efficiency for rendering bitmaps.
To increase the size of the input image.