Using A-Buffer in Radiosity

Stream Processing in Global Illumination

This paper presents the implementation of the stochastic radiosity algorithm on the graphics hardware. We store the radiosity function in texels of the floating point pbuffer. The radiosity function is updated in each iteration. When converged, the radiosity function is mapped onto surfaces by traditional texture mapping. Our goal is to enable interactive radiosity style rendering of scenes wit...

A hardware based implementation of the Multipath method

This paper presents a depth buffer hardware implementation of the multipath algorithm for radiosity. The implementation makes use of bundles of parallel lines implemented with the OpenGL's depth buffer. The new algorithm is compared with the earlier painter algorithm implementation and we conclude that the proposed technique can result in half a magnitude of speed increase, and can render the i...

The Close Object Buffer: A Sharp Shadow Modelling Technique for Radiosity Methods

Radiosity methods have been using several techniques in order to determine a subdivision of the environment that accurately captures the variations of the radiance field. Most of these techniques use object space approaches to predict the areas of high variation of the radiance. Such methods can be prohibitively expensive to be applied in scenes containing a large number of small ’detail’ objec...

Octant Priority for Radiosity Image Rendering

This paper presents a new scheme for image display using radiosity methods. An octree technique performs subdivision of polygons which is required in any radiosity method. The octree-based subdivision not only subdivides polygons into patches, but also produces a sequence of leaf octants implicitly sorted in the octree. By traversing the octree, a depth priority of these leaf octant,s with resp...

Adaptive and Depth Buffer Solutions with Bundles of Parallel Rays for Global Line Monte Carlo Radiosity