what is frame buffer in computer graphics

Frame buffer in computer graphics is a block of memory that stores the pixel data for the image being shown on a display. It acts like a temporary “screen copy” that the graphics hardware reads to draw the picture.

Quick Scoop

A frame buffer holds the color values for every pixel in a frame, so the monitor can refresh the image smoothly. In simple terms, the GPU renders the scene into this memory first, then the display uses that stored image to show what you see on screen.

Why it matters

• It lets graphics systems draw and update images efficiently.

• It supports smooth animation because the screen can be refreshed from stored pixel data instead of redrawing everything from scratch each time.

• It is fundamental in computer graphics, gaming, embedded systems, and graphical user interfaces.

Simple example

If a game is showing a character running, the frame buffer contains the pixel colors for that exact moment in the animation. As the next frame is rendered, the buffer is updated with new pixel data, and the display shows the new image.

In one line

A frame buffer is the memory area that stores the complete image frame before it is displayed on the screen.

If you want, I can also explain the difference between a frame buffer , video RAM , and a framebuffer object in WebGL/OpenGL.