Terrain(地形) Geometry Clipmap 在大的室外场景中,地形的几何体需要较大的存储空间和渲染带宽。为解决这个问题,出现了很多LOD的技术。然而,大多数技术都是在CPU端实现的,需要运行时创建和修改顶点缓冲区。 Geometry Clipmap: 把地形当做2D的高度图,并把它预过滤进一个L层的mipmap中。对于大场景来说,完整的地形mip...
clipmapterraintexturerederingshiftIn order to meet the needs of rendering of large terrain, the loading and rendering methods of largescale terrain texture are studied. A framework of terrain texture real-time loading and rendering is presented based on clipmap and texture blocks. Texture update and...
Mesh View:简化的Clipmap地形渲染 Mesh View Terrain Rendering 潘李亮 2010/6/19 本文借鉴目前的地形渲染和地形数据管理调度的解决方案,提出一种简单易实现的无限大地形的数据调度和加载方案。 现有方案 John Camark的id-tech5的技术demo中给我们展示了一个无比细致的室外场景,该演示使用了id-software的最新技术,Mega...
aSince LODs are purely based on 2D distances from the clipmap center, the terrain data does not require precomputation of refinement criteria. Together with the simple grid structure, this allows the terrain to be synthesized on-the-fly, or to be stored in a highly compressed format. 因为LODs...
Improved geoclipmap algorithm for terrain visualization the filter in the generation of mipmap levels to avoid detail of terrain surface being flattened.After that,it is the rendering process.A two-level ... JT Zhang,FT Liu,ZL Ai - 《Journal of Computer Applications》 被引量: 3发表: 2010年...
>>> terrain >>> meshes. However, theses meshes can and will have holes. >>> I think both VPN and osgEarth (which are pretty cool and I used them in >>> different contexts) are not suited for this purpose. >>> For the rendering part, my first idea was to use the "Geometry Cli...
>> terrain >> meshes. However, theses meshes can and will have holes. >> I think both VPN and osgEarth (which are pretty cool and I used them in >> different contexts) are not suited for this purpose. >> For the rendering part, my first idea was to use the "Geometry Clipmap": ...
Keywords:terrainvisualization;LevelofDetail(LOD);clipmap;resampling;viewfrustumculling;boundingbox 0引言 大规模地形数据的实时可视化在计算机游戏、飞行仿真 等可视化和图形应用仿真工程中被广泛应用。对可视化效果 越来越高的需求导致了大规模地形数据的出现,这超出了图 ...
Geometry clipmaps: terrain rendering using nested regular grids Rendering throughput has reached a level that enables a novel approach to level-of-detail (LOD) control in terrain rendering. We introduce the geometry cli... F Losasso,Hoppe, H - 《Acm Transactions on Graphics》 被引量: 1009发表...
Additional Keywords: clipmap, mipmap, texture, image exploitation, terrain visualization, load management, visual simulation. Our initial clipmap implementation addresses these goals through a combination of low-level hardware and higher-level system level software. The hardware provides real-time rendering...