CopyExternalImageToTexture validated that the source rectangle is in bounds on the content timeline and produces an OperationError if it isn't. It should be tested, probably with various source types to make sure the size is correctly computed for each type of source.
CopyExternalImageToTexture validated that the source rectangle is in bounds on the content timeline and produces an OperationError if it isn't. It should be tested, probably with various source types to make sure the size is correctly computed for each type of source.