Software rendering is the process of creating synthetic image fast enough from a model by means of computer software so that the viewer can interact with the virtual environment, software rendering refers to a rendering process that is not dependent upon graphics hardware ASICs, such as a graphics card. The rendering takes place entirely in the CPU. Rendering is the endmost step in an animation process, and gives the final appearance to the models and animation with visual effects such as shading, texture-mapping, shadows, reflections and motion blurs. It is used in architecture, simulators, video games, movies, television visual effects and design visualization etc.
Rendering can be split into two main categories:
1. Real-time rendering (online rendering)
Real-time rendering is used to interactively render a scene like in 3D computer games, 3D models etc., generally each frame must be rendered in a few milliseconds
2. Pre-rendering (offline rendering)
Offline rendering is used to create realistic images and movies, where each frame can take hours or days to complete, or for debugging of complex graphics code by programmers.
In this article we will be discussing about Real Time Rendering:
RTR is a product allowing designers to interactively create realistic and dynamic renderings and animations in real-time, by extensively using all the hardware features available. Users can dynamically create and manipulate materials, lights and environments and immediately view the result of any modification. Rendering for interactive media, such as games and simulations, is calculated and displayed in real time, at rates of approximately 20 to 120 frames per second. In real-time rendering, the objective is to show as much information as possible as the eye can process in a fraction of a second.
Most of you have only heard real time rendering being used in video games, movies, realistic images etc., but it also have much advanced application in the field of architectural, mechanical & civil software’s such as CATIA, Solidworks, Revit , 3D max etc., Architects & Designers are now able to create interactive 3D presentations to communicate concepts and designs to clients, stakeholders, and other members of the project team. Designers can interactively create material texture definitions with controlled parameters such as color, luminance, transparency and reflectivity. To simplify the creation process, designers can begin with any digital image, change the stretch values and mapping options to planar, cylindrical or spherical projection.
It allows you to define material specifications that will be shared across your entire product development process as well as map materials onto parts and products to produce realistic renderings. User-defined specification families help designers in organizing these materials, In addition to the texture rendering, users can also define technological specifications such as, material density, Young modulus and Poisson ratio. Real Time Rendering comes with a library of predefined, rendering and technological specifications to make the application of textures effortless. Direct editing of part feature properties provides full control of materials basic appearance and texture characteristics.
Some of the Real Time Rendering Software’s are Fluid ray RT, Maxwell Render, I ray, Vray, Octane Render, 3D Reshaper etc., 3D modelling software having inbuilt Real time Rendering such as CATIA, Revit, AutoDesk123D etc.
1. Designers and Engineers are able to perform highly photo-realistic 3Dpresentations, without the need for expensive third-party software.
2. Decision maker and manager have the opportunity to check the design directly on the virtual model.
3. Easy to use with very little training requirements.
4. Photo-realistic images are produced quicker because the various visual settings change dynamically, for instant feedback. No need to wait for slow batch rendering processes.
5. Instant modifications to object surfaces are possible within real-time render mode.
6. Large amounts of data or very complex models can be quickly and easily displayed.
Article written and submitted by: Deepti Rajendra Thakur