Editing ATI TruForm (section)

{{short description|Brand name by ATI}}
{{External links|date=July 2024}}
'''ATI TruForm''' was a brand by [[ATI Technologies|ATI]] (now [[Advanced Micro Devices|AMD]]) for a [[Semiconductor intellectual property core|SIP block]] capable of doing a graphics procedure called [[Tessellation (computer graphics)|tessellation]] in computer hardware. ATI TruForm was included into [[Radeon 8500]] (available from August 2001 on) and newer products.<ref>{{cite web |url=http://www.anandtech.com/show/773 |title=ATI TruForm – Powering the next generation Radeon |author=Witheiler, Matthew |publisher=[[AnandTech]] |date=2001-05-29 |accessdate=2016-01-30}}</ref>

The successor of the SIP block branded "ATI TruForm" was included into [[Radeon HD 2000 series]] (available from June 2007 on) and newer products: [[TeraScale (microarchitecture)#Hardware tessellation|hardware tessellation with TeraScale]].

Support for hardware tessellation only became mandatory in Direct3D 11 and OpenGL 4. Tessellation as defined in those APIs is only supported by newer [[TeraScale (microarchitecture)#TeraScale 2|TeraScale 2]] (VLIW5) products introduced in September 2009 and [[Graphics Core Next|GCN]]-based products (available from January 2012 on). The GCN SIP block carrying out the tessellation is the "Geometric processor".