To get the best motion pictures these days, it is essential to know how 3D pictures are rendered. Understanding rendering is not as difficult as you think, but it requires going through this part with a high level of concentration, as the main issues on the subject are sufficiently discussed.

The term rendering refers to the calculations performed by a rendering engine equipped with a 3D software package to interpret a 3D scene from a mathematical approximation to a final 2D image. During the process, texture, spatial and flash information of the scene is combined to arrive at the color value of each pixel in the compressed image.

There are two main kinds of rendering and they differ in the speed at which they calculate and finalize the images. The two main kinds are real-time rendering and pre-rendering (offline rendering). Real-time rendering is mostly used in games and interactive graphics due to the need to compute images from 3D information at a very high speed. Since it will be difficult to predict how the game player will interact with the game environment, it is very important to render images in real-time as the action unfolds.

In addition, at least 18 to 20 frames per second must be rendered on the screen for the motion to appear fluid. If you want improved real-time rendering, try to precompile as much information as possible and also use dedicated graphics hardware. Game environment lighting information can also be pre-computed and developed directly into game environment texture files to improve rendering speed.

On the other hand, pre-rendering or offline rendering is the use of multi-core processors rather than dedicated graphics hardware to perform calculations. It takes a lot of time to complete, and it can be seen mainly in the animations and effects, which the owners believe more in photorealism and visual complexity. Because what appears on each screen is predictable, major studios spend a lot of time on individual frames (about 90 hours of rendering).

In addition, pre-rendering can achieve a higher level of photorealism than real-time rendering because the former occurs in an open frame. This gives room for characters, environments, and their associated textures and light to have higher polygon counts and very high resolution 4K or higher texture files.