Method for image processing based on vertical synchronization signals and electronic device

An electronic device, wherein the electronic device comprises a touchscreen, a memory, and one or more processors, wherein the touchscreen and the memory are coupled to the processor;

• and the memory 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 performs the following steps:
• drawing, by the electronic device, one or more first layers in response to a first vertical synchronization signal, and rendering the one or more first layers, and after rendering the one or more first layers, performing layer composing on the rendered one or more first layers to obtain a first image frame;
• and
• refreshing and displaying, by the electronic device, the first image frame in response to a second vertical synchronization signal
• wherein the drawing, by the electronic device, one or more first layers in response to a first vertical synchronization signal, and rendering the one or more first layers, and after rendering the one or more first layers, performing layer composing on the rendered one or more first layers to obtain a first image frame comprises:
• determining that a first frame processing duration in a first measurement period is shorter than or equal to a preset single-frame duration;
• in response to the determining that the first frame processing duration in the first measurement period is shorter than or equal to the preset single-frame duration, drawing, by the electronic device, the one or more first layers in response to the first vertical synchronization signal, and rendering the one or more first layers, and after rendering the one or more first layers, performing layer composing on the rendered one or more first layers to obtain the first image frame, wherein
• the first frame processing duration is a sum of a first frame rendering duration and a first layer composing frame duration for composing the first layer, the first frame rendering duration is a duration required for drawing the layer and rendering the drawn layer, and the first layer composing frame duration is a duration required for performing layer composing on the rendered layer.