| dc.creator | Callahan, Steven Paul | |
| dc.creator | Ikits, Milan | |
| dc.creator | Comba, Joao Luiz Dihl | |
| dc.creator | Silva, Cláudio Teixeira | |
| dc.date | 2011-01-29T06:00:33Z | |
| dc.date | 2005 | |
| dc.identifier | 1077-2626 | |
| dc.identifier | http://hdl.handle.net/10183/27599 | |
| dc.identifier | 000543950 | |
| dc.description | Harvesting the power of modern graphics hardware to solve the complex problem of real-time rendering of large unstructured meshes is a major research goal in the volume visualization community. While, for regular grids, texture-based techniques are well-suited for current GPUs, the steps necessary for rendering unstructured meshes are not so easily mapped to current hardware. We propose a novel volume rendering technique that simplifies the CPU-based processing and shifts much of the sorting burden to the GPU, where it can be performed more efficiently. Our hardware-assisted visibility sorting algorithm is a hybrid technique that operates in both object-space and image-space In object-space, the algorithm performs a partial sort of the 3D primitives in preparation for rasterization. The goal of the partial sort is to create a list of primitives that generate fragments in nearly sorted order. In image-space, the fragment stream is incrementally sorted using a fixed-depth sorting network. In our algorithm, the object-space work is performed by the CPU and the fragment-level sorting is done completely on the GPU. A prototype implementation of the algorithm demonstrates that the fragment-level sorting achieves rendering rates of between one and six million tetrahedral cells per second on an ATI Radeon 9800. | |
| dc.format | application/pdf | |
| dc.language | eng | |
| dc.relation | IEEE transactions on visualization and computer graphics. Los Alamitos. Vol. 11, n. 3 (May/June 2005), p. 285-295 | |
| dc.rights | Open Access | |
| dc.subject | Volume visualization | |
| dc.subject | Graphics processors | |
| dc.subject | Visibility sorting | |
| dc.subject | Computação gráfica | |
| dc.subject | Visualizacao volumetrica | |
| dc.subject | Reproducao : Computacao grafica | |
| dc.title | Hardware-assisted visibility sorting for unstructured volume rendering | |
| dc.type | Artigo de periódico | |
| dc.type | Estrangeiro | |
