Real-time soft shadow mapping by backprojection
Real-time soft shadow mapping by backprojection
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DOI：
10.2312/egwr/egsr06/227-234
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发表时间：
2006-06
期刊：
影响因子：
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通讯作者：
Gaël Guennebaud;L. Barthe;M. Paulin
中科院分区：
文献类型：
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作者：
Gaël Guennebaud;L. Barthe;M. Paulin
我们提出了一种新的实时软阴影算法，每个光源使用单个阴影贴图。因此，我们的算法非常适合渲染复杂和动态的场景，并且它可以处理所有可光栅化的几何图形。我们方法的关键思想是使用阴影贴图作为场景的简单且均匀的离散表示，从而使我们能够在大多数情况下生成逼真的软阴影。特别是它自然地处理遮挡物融合。此外，我们的算法以高精度处理矩形光源和纹理光源，并且它可以很好地映射到可编程图形硬件。
We present a new real-time soft shadow algorithm using a single shadow map per light source. Therefore, our algorithm is well suited to render both complex and dynamic scenes, and it handles all rasterizable geometries. The key idea of our method is to use the shadow map as a simple and uniform discretized represention of the scene, thus allowing us to generate realistic soft shadows in most cases. In particular it naturally handles occluder fusion. Also, our algorithm deals with rectangular light sources as well as textured light sources with high precision, and it maps well to programmable graphics hardware.