Control method based on vertical synchronization signal and electronic device

An electronic device, wherein the electronic device comprises a touchscreen, a non-transitory computer storage medium, and one or more processors, the touchscreen, the non-transitory computer storage medium, and the one or more processors are coupled, the non-transitory computer storage medium is configured to store computer program code, the computer program code comprises computer instructions, and when the processor executes the computer instructions, the electronic device is configured to perform the following method:

• drawing, by the electronic device, one or more layers in response to a first vertical synchronization signal;
• refreshing and displaying, by the electronic device, an image frame in response to a second vertical synchronization signal, wherein the first vertical synchronization signal is on a same frequency as the second vertical synchronization signal;
• adjusting, by the electronic device, the first vertical synchronization signal, so that the adjusted first vertical synchronization signal is delayed by a first delay time relative to the second vertical synchronization signal;
• drawing, by the electronic device, one or more layers in response to the adjusted first vertical synchronization signal;
• performing, by the electronic device, layer composition on one or more drawn layers in response to a third vertical synchronization signal, to obtain an image frame;
• adjusting, by the electronic device, the third vertical synchronization signal, so that the adjusted third vertical synchronization signal is delayed by a second delay time relative to the second vertical synchronization signal, wherein the third vertical synchronization signal is on a same frequency as the second vertical synchronization signal;
• and
• performing, by the electronic device, layer composition on one or more drawn layers in response to the adjusted third vertical synchronization signal, to obtain an image frame.

A non-transitory computer storage medium comprising computer instructions, wherein when the computer instructions are run on a computer, the computer is configured to perform the following method:

• drawing, by the electronic device, one or more layers in response to a first vertical synchronization signal;
• refreshing and displaying, by the electronic device, an image frame in response to a second vertical synchronization signal, wherein the first vertical synchronization signal is on a same frequency as the second vertical synchronization signal;
• adjusting, by the electronic device, the first vertical synchronization signal, so that the adjusted first vertical synchronization signal is delayed by a first delay time relative to the second vertical synchronization signal;
• drawing, by the electronic device, one or more layers in response to the adjusted first vertical synchronization signal;
• performing, by the electronic device, layer composition on one or more drawn layers in response to a third vertical synchronization signal, to obtain an image frame;
• adjusting, by the electronic device, the third vertical synchronization signal, so that the adjusted third vertical synchronization signal is delayed by a second delay time relative to the second vertical synchronization signal, wherein the third vertical synchronization signal is on a same frequency as the second vertical synchronization signal;
• and
• performing, by the electronic device, layer composition on one or more drawn layers in response to the adjusted third vertical synchronization signal, to obtain an image frame.