Hardware-assisted Rendering of CSG Models

Fabiano Romeiro, Luiz Velho, Luiz Henrique de Figu
Harvard University
XIX Brazilian Symposium on Computer Graphics and Image Processing (SIBGRAPI’06)


   title={Hardware-assisted rendering of csg models},

   author={Romeiro, F. and Velho, L. and De Figueiredo, L.H.},



   publisher={IEEE Computer Society}


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Current methods that interactively render reasonably complex CSG objects are image based and are severely bandwidth limited. This paper presents a new approach to raytracing CSG objects composed of convex primitives that combines spatial subdivision and ray-tracing methods. By performing spatial subdivision on the CSG object until locally it is simple enough to be rendered effectively and efficiently on a GPU, we are able to share the loadmore evenly between the CPU and the GPU and depend less on bandwidth and more on GPU instruction throughput than current methods, hence obtaining better scalability with newer hardware.
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