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Encyclopedia > Transform and lighting
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Transform and Lighting is a computing term used in computer graphics, generally used in the context of hardware acceleration ("Hardware T&L"). Transform refers to the task of converting coordinates in space, which in this case involves moving 3D objects in a virtual world and converting 3D coordinates to a 2D view. Lighting refers to the task of taking light objects in a virtual scene, and calculating the resulting colour of surrounding objects as the light falls upon them. In computing, hardware acceleration is the use of of hardware to perform some function faster than is possible in software running on the normal CPU. Examples of hardware acceleration include blitting acceleration functionality in graphics processing units (GPUs) and instructions for complex operations in CPUs. ...


In modern 3D games with complex scenes and detailed lighting effects, the high number of points to be transformed and lit can be a computationally intense process, which is why newer 3D expansion cards offer acceleration. Cards with this capability are commonly referred to as a Graphics Processing Unit, or GPU. Jump to: navigation, search GeForce 6600GT (NV43) GPU Radeon 9800 Pro (R350) GPU A Graphics Processing Unit or GPU (also occasionally called Visual Processing Unit or VPU) is the microprocessor of a graphics card (or graphics accelerator) for a personal computer or game console. ...


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2nd Gen Transform and Lighting (812 words)
Lighting calculations are an effective way to add both subtle and not-so-subtle changes in brightness to 3D objects in a manner that mimics real-world lighting conditions.
Diffuse lighting assumes the light hitting an object scatters in all directions equally, so the brightness of the reflected light does not depend at all on the position of the viewer.
Specular lighting is different because it depends on the position of the viewer as well as the direction of light and orientation of the object being lit.
Transform and lighting - Wikipedia, the free encyclopedia (176 words)
Transform and lighting is a term used in computer graphics, generally used in the context of hardware acceleration (Hardware TandL).
Transform refers to the task of converting spatial coordinates, which in this case involves moving three-dimensional objects in a virtual world and converting the coordinates to a two-dimensional view.
Lighting refers to the task of taking light objects in a virtual scene, and calculating the resulting colour of surrounding objects as the light falls upon them.
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