Separating-Plane Perspective Shadow Mapping
نویسندگان
چکیده
منابع مشابه
Separating-Plane Perspective Shadow Mapping
This paper proposes a real-time hybrid solution between standard shadow mapping and any of the current perspective shadow mapping based methods. Existing methods are known to have undersampling problems. At little extra cost we combine two methods to minimize undersampling errors. This is done by computing a plane equation which separates the two resulting shadow maps to get the best possible a...
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Depth-map algorithms for rendering antialiased shadows are computationally efficient and accommodate a wide variety of primitives. They have two drawbacks, however, that make them impractical for everyday use: They require the user to specify a bias that must be optimized for each particular scene and view; and they generally require the use of large shadow maps— frequently much larger than the...
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In this paper we propose several methods that can greatly improve image quality when using the shadow mapping algorithm. Shadow artifacts introduced by shadow mapping are mainly due to low resolution shadow maps and/or the limited numerical precision used when performing the shadow test. These problems especially arise when the light source’s viewing frustum, from which the shadow map is genera...
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Forward shadow mapping is a new approach to real-time shadow generation. The traditional shadow map algorithm maps the pixels in the eye's view backward into the depth buuers of light sources (i.e. shadow maps), which is similiar to and often implemented as an extension to texture mapping. Our algorithm reverses this process by using 3-D image warping techniques to transform shadow map pixels f...
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In this paper we present an image-based algorithm to render visually plausible anti-aliased soft shadows in real time. Our technique employs a new shadow pre-filtering method based on an extended exponential shadow mapping theory. The algorithm achieves faithful contact shadows by adopting an optimal approximation to exponential shadow reconstruction function. Benefiting from a novel overflow f...
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ژورنال
عنوان ژورنال: Journal of Graphics Tools
سال: 2007
ISSN: 1086-7651
DOI: 10.1080/2151237x.2007.10129246