In Hunt Oil Co. v. Moore, 639 S.W.2d 459, 460 (Tex. 1982), the Texas Supreme Court considered a case in which the parties contested the finality of a summary judgment order. 639 S.W.2d at 459.
In its summary judgment, the trial court did not dispose of a claim for prejudgment interest and ordered that one party "render an accounting" of damages. Id.
After the accounting of damages was complete, the trial court entered another judgment, ordering damages of approximately $377,000. Id.
The Texas Supreme Court held that the summary judgment was interlocutory because it required a future calculation of damages and did not dispose of a claim for prejudgment interest. Id. at 460.