Interactive rendering of caustics using interpolated warped volumes
Interactive rendering of caustics using interpolated warped volumes
复制标题
使用插值扭曲体积交互式渲染焦散
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
Henrik Wann Jensen
中科院分区：
文献类型：
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作者：
Manfred Ernst;Tomas Akenine;Henrik Wann Jensen
在本文中，我们提出了一种改进的技术，利用可编程图形硬件的交互式绘制焦散线。以前的实时方法使用简单的棱镜的焦散量和恒定的强度近似在接收器。我们的方法使用插值焦散体积来渲染平滑的高质量焦散。我们推导出了一个简单的公式，用于计算沿焦散线沿着的波前密度，我们已经开发出一种精确的方法，用于绘制焦散体的双线性补丁。新的优化是非常适合可编程图形硬件和我们的结果表明交互式渲染焦散从折射和反射表面以及体积焦散。与以前的工作相比，我们的方法呈现高质量的焦散产生的镜面与更少的多边形。
In this paper we present an improved technique for interactive rendering of caustics using programmable graphics hardware. Previous real-time methods have used simple prisms for the caustic volumes and a constant intensity approximation at the receiver. Our approach uses interpolated caustic volumes to render smooth high-quality caustics. We have derived a simple formula for evaluating the density of wave-fronts along a caustic ray, and we have developed a precise method for rendering caustic volumes bounded by bilinear patches. The new optimizations are well suited for programmable graphics hardware and our results demonstrate interactive rendering of caustics from refracting and reflecting surfaces as well as volume caustics. In contrast to previous work, our method renders high quality caustics generated by specular surfaces with much fewer polygons.