It's difficult to provide a definitive answer without knowing the specific type of frozen food and the temperature it reached during the time it was left out. However, in general, it is recommended to follow the "2-hour rule" for perishable foods.
According to the United States Department of Agriculture (USDA), perishable foods, including frozen items, should not be left at room temperature for more than 2 hours. This is because harmful bacteria can multiply rapidly within that time frame, particularly in warmer temperatures.
Given that your frozen food was left out for 1-2 hours on a hot day, it is possible that the temperature rose above the recommended safe zone. The fact that some items have gone soft suggests that they may have started to thaw. While the frosty appearance might indicate that they are still cold, it doesn't necessarily guarantee their safety.
To err on the side of caution, it is generally advised to discard any frozen food that has been left at room temperature for more than 2 hours. Consuming food that has been improperly stored can pose a risk of foodborne illnesses. It is better to prioritize food safety and avoid potential health risks.