Computer graphics is full of surprises, so it so often gives us the opportunity to get acquainted with new terms. Those who have never used such programs are unlikely to be able to tell you what the render is and why it is needed. We will try to figure this out.
Definition
Interestingly, there is practically nothing on the Internet for this particular request. Many puzzled in search of an interpretation of the "render". In fact, everything is easier. There is such a process in computer graphics as rendering. The program that implements this process is called a render. Considering such software, you need to understand what kind of action it is and where it is applied.
Process
So, rendering is a capacious process that transforms the image according to the model thanks to the program. From English, the word translates as "visualization." The word “model” does not necessarily mean something material. Here we can talk about objects and phenomena. In general, interpretations can provide geometric, geographical information. May relate to lighting, the presence of parts, substances, physical field strength.
Computer graphics
When asked what rendering is, they usually mean rendering. This process is often associated with computer graphics. In this case, the visualization passes according to the worked out plan. A flat image is generated for the 3D scene in raster format.
Visualization itself in this area is considered important. It is conditionally connected with different sections of computer graphics. Now it’s hard to say that there is a specific rendering application. Usually visualization is included in the package and three-dimensional modeling, and animation. Although you can try to find renders .
Methods
When we learn what rendering is, we need to understand its functions. Obviously, such a program can help with visualization. But the process itself can occur by different methods. There are many algorithms for this action. Some programs use their own specifically, some exploit several at once.
A number of rendering methods were created by tracing. Displaying all the rays of light that illuminate the scene is impractical. It takes too much time if the approximation or digitization is not taken into account.
One method is rasterization. It works along with string scanning. In this case, objects are projected onto the display. And the effect of perspective is not considered.
The method of reykasting involves consideration from a specified point. From it rays are sent to the objects and the color of the pixel is determined. If the beam reaches an object or background, it does not propagate further. This method allows simple ways to use optical effects .
Two other methods are ray tracing or path tracing. The first option is similar to the previous one. But when the beam hits an object, it spreads further. So there are three more rays. Each contributes to pixel color in a specific way. This is how reflection, shadow and refraction appear. This method makes the image photorealistic, although it is considered resource-intensive. Path tracing is similar to the method described above. The only difference is that the physical laws of light propagation are more pronounced.
How does it work?
If you understand what rendering is in general, then most likely it will be difficult for you to deal with the mathematical justification of the process. To render correctly, it must be implemented using a physical model. The program performs the calculations. But there can be several equations, as well as solutions. We have already seen this in the description of visualization methods .
Customization
Render settings can vary greatly. It all depends on the tasks of the user and his skills. For example, you can create quick draft rendering. To do this, you will have to additionally download the script. Each time, the team will automatically adjust the program settings so that the visualization is draft, that is, in tolerable quality.
Visualization settings may indicate methods for rendering models. For example, for Photoshop, you can search for a set of such settings. Based on them, they create their own parameters or, having slightly adjusted, use the established ones.
Programs
VRay render is a complete visualization system. It appeared back in 2000. It can be installed as a plugin for a number of programs. Among the latter, there are Cinema 4D, Rhino, and Autodesk 3ds Max. This system can be used as a module for Blender.
3D Max or Autodesk 3ds Max render is a multifunctional program that performs not only visualization, but also creates and edits three-dimensional graphics. Easily copes with animation. At the moment, it is very popular because it has acquired many different functions for working with 3D-image. It has many tools for artists and those who work with multimedia.
Vegas Pro
This is a complete program for editing and editing videos, as well as multi-track recording. It is difficult to consider Vegas as a render, although such a function is also here. To transform a project into a finished file, click on Render As, in a new window give the name of the video and select the Video for Windows extension, below is a line with a choice of parameter templates. Here we are looking for = NTSC DV. After you have to wait until the program collects and saves the movie.
Perhaps for your project you may need a different template, then you can click on Custom and select a more suitable option in a new window. Immediately you can set the quality of the rendered video. Below is the “Video” tab, on it all parameters are set individually for each user.
Rendering often leads to errors in video output. If you want to seriously deal with it, you will have to study in detail the process, technology and methods in order to further reduce errors to a minimum.