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What is Rendering?


You would have come across this word many times but know why the meaning and the use of rendering in the computer. If answer No, then this blog is for you.


Rendering just means “To Draw”.

In computer point of view, its process in which code data is processed by the computer processor or the graphic card and converted into image which can be display on the screen.

In technical term :Rendering or image synthesis is the automatic process of generating a photo realistic or non-photo realistic image from a 2D or 3D model by means of computer programs.

Rendering technique are of two type:
1.Real-Time Rendering
2. Pre-Rendering

1.Real-Time Rending: You would have experience this rendering process if you have played a high graphic game which require graphic processing unit. In this process the rendering is done on the go, where image must be created at rapid pace. Because user interaction is high in such environment, real time image creation is required.

2. Pre-Rendering: This technique is used where we are not concern about the speed. Image calculation are performed by multi core central processing unit instead of dedicated graphic card. This rendering is done is animation and visual effect.

Whatever a computer displays on the screen is rendered in real time: The computer is computing all the coded data fast enough to display and update images with no perceivable lag. However, the computer can only render so much content complexity at once to continue the real-time rendering perception. The term rendering is used in video editing and processing to describe the computer taking extra time to render graphics and generate a full-motion-video playback version that works in real time.

Why is GPU used in rendering?


Processor is design to handle huge task very quickly one at a time. And rendering is processor in which multiple small task to be done. Here come the part of GPU who can handle small task simultaneously because GPU are design to handle thousand of small task which make it better suit for rendering.

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