![]() ![]() ![]() In OpenGL, TruForm functionality was accessible via the GL_ATI_pn_triangles extension. In old hardware like Radeon 8500 or Radeon 9800, there was a hardware tessellation module called TruForm. Scalability: because of its recursive nature, subdivision naturally accommodates LOD rendering and adaptive approximation with a variety of metrics.Bandwidth is improved because, instead of transferring all of the vertex data for a high-polygon mesh over the PCI-E bus, only the coarse mesh is sent to the GPU.Compression: using tessellation allows to reduce the memory footprint and bandwidth consumption by storing on disk only low resolution meshes.Today tessellation can be done on GPU and provides several key benefits: Another definition is: tessellation allows to increase polygons density. The tessellation is the processus that divides a polygon into smaller ones. Actually this unit is included in all Radeon HD 2000, 3000, 40 series. I recently played with the hardware tessellation unit included the Radeon HD 5770. Update (2010.02.10): AMD provided me some important details about tessellation on Radeon. Hardware Tessellation on Radeon in OpenGL (Part 3).Hardware Tessellation on Radeon in OpenGL (Part 2).
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