Rendering - The Breath Of Life
Render is a term used in computer jargon referring to the process of generating an image from a model
. This technical term is used by animators and audiovisual producers and 3D design software. In terms of displays on a computer, more specifically, 3D rendering is a complex calculation process developed by a computer for generating a 2D image from a 3D scene. So one could say that in the process of rendering the computer interprets the scene in three dimensions and the plasma in a two-dimensional image. The rendering is applied in computer graphics, more often in computer graphics. In this process develops computer graphics to mimic a 3D space formed by polygonal structures, behavior of light, textures, materials (water, wood, metal, plastic, fabric, etc.) and animation simulating believable environments and physical structures.
One of the most important programs are dedicated to computer graphics rendering engines, which are able to perform complex techniques such as radiosity, raytrace, alpha, reflection, refraction or global illumination. When working on a program of 3D computer design, is not usually possible to visualize in real time the desired finish in a complex 3D scene as this requires very high computing power, so you choose to create the 3D environment a simple form of visualization and technical and then generate the slow process of rendering to achieve the desired end results.
The render time depends largely on the parameters of materials and lights, as well as the rendering program settings. Typically each application has its own 3D rendering engine, but it is clear that there are plugins that are dedicated to the calculation within the program using special formulas. In the case of video games, prerendered images are typically used to generate textures and help the console's processor to work in the virtual environment with much more fluidity.
Prerrenderizacin The prerrenderizacin is based on the use of the image or texture in a game that was rendered by a graphics engine much more powerful than the one used in the game (a professional), so the game's graphics engine only responsible for calculating the position of the texture, not its contents, it is much easier for a computer to calculate pixels and lots of textured polygons affected by lights, shadows, reflections, etc.. Was widely used mainly in older games (prior to 2003 you could say), which were a mix of 3D and 2D, since all the graphics engine were estimated to be 3-dimensional dynamic objects (characters, objects that could be saved or used, etc.) while funds were still texture.
Collision boxes were used to simulate a character could be hitting the stationary objects that texture, so do not transgress. The main disadvantage of this method was that you could not use a free camera, but the player's field of view was based on a lot of predetermined positions of the camera taking into account the position of the character. This method was widely used in the first games of series like Resident Evil and Dino Crisis, among others.
Prerrenderizacin currently is used only for static textured 3D objects, for example, prerrenderizando a wall in which there is a shadow, ensures that the graphics engine does not have to calculate each frame the position and all the features of the shadow, if not image only previously assigned to the object.
Also for other minor details, although possibly in the future practically not needed because it takes away momentum to graphics: taking as example the shadow prerrenderizada the previous case, that shadow would no longer be modified in other aspects such as light or position of the object that is generating, since the graphics engine is not calculating. Misuses of the word "render" For many years amateur designers have called "render" as those images using the alpha channel to remove the background and easier to edit that image, although this edition does not use a rendering engine.
This term has been misused spread throughout the internet, most influential pages where they post tutorials Free digital imaging, allowing the new amateur designers used incorrectly the term "render".
by: Ronald Newman
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