Frametime意思

"Frametime" is a term commonly used in the context of computer graphics and gaming. It refers to the time it takes for a single frame to be rendered and displayed on the screen. In gaming, frametime is an important metric because it directly affects the perceived smoothness and responsiveness of the game.

A "frame" is a single image in a sequence that, when played at a certain speed, creates the illusion of motion. In video games, the goal is to display a series of frames at a rate that is fast enough to create a seamless visual experience for the player. This rate is typically measured in frames per second (FPS). A higher framerate (more frames per second) generally results in a smoother and more responsive game.

Frametime is significant because it can affect the consistency of the framerate. If the time it takes to render each frame varies significantly, it can lead to "frame time variance" or "frame time jitter," which can be perceptible as stuttering or choppiness in the game. This is because the human eye is sensitive to changes in motion, and if the time between each frame is not consistent, it can disrupt the illusion of smooth movement.

In gaming, low and consistent frametimes are desirable because they contribute to a more fluid and responsive gameplay experience. Many gamers and game developers use tools and techniques to measure and optimize frametimes to ensure that games run smoothly and look their best.