I’m developing with an ATI Mobility 7500 in one system and an ATI 7000 in another. Even with updated drivers, neither one appears to support the WGL_ARB_buffer_region extension.
The ATI cards do appear to support the obsolete KTX_buffer_region, but I haven’t been able to find the extension spec. Does anybody have a link for it? Is it much different from the ARB extension? I understand that it’s badly defined, does anybody have an idea of what problems I could expect if I used it whenever the ARB extension isn’t available?