How does 3D rendering work?

3D rendering is the process of creating an image or compilation from images based on three-dimensional data. This process takes place using computer programs and is often accompanied by difficult technical calculations, which fall on the computing power of the computer or on some of its component parts. Typically, the GPU and CPU.

The process of rendering is present in different areas of professional activity. For example, in the development of games. Often, 3D rendering is the last stage in the work on the project, after which the work is considered completed.

In 3D rendering, as the name suggests, uses the technology of three-dimensional objects. To explain this operation in simple terms, we can draw an analogy with the work of photographers. In order for a photograph to appear in all its glory, the photographer needs to go through some technical steps. For example, developing film or printing on a printer. To be more specific, the rendering engine performs a huge number of calculations according to predetermined algorithms. Based on the data about the scenes and models that have been created in the program, they are processed and transformed into an image. During processing, the models acquire clear lines, colors and shades, realistic shadows and reflections due to physics and the location of other objects in the scene. Their appearance becomes complete, and every pixel is refined.
Single-threaded rendering is when calculations are performed synchronously in a single thread. Suitable for creating simple scenes with a low degree of realism.

Multi-threaded rendering - is when the calculations are made in several threads separately. For example, in one pass only shadows are processed, in another - only reflections, and in the third - only colors. Then all this is combined in specialized software and, if necessary, corrected in layers (reminiscent of the work in Photoshop). This kind of rendering is used to create scenes with a high degree of detail and realism of objects.

If you do not think that you will be able to do 3D rendering by yourself, you can use the three-dimensional assets from our website. They are in a separate catalog. You can choose the right ones for both Unity and Unreal Engine - probably the two most popular video game engines.

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