GFX9 will not be supported. Thanks, Jian-Rong Jin
在 2018年8月15日，下午8:33，Jakub Okoński <[email protected]<mailto:[email protected]>> 写道： Hey Jian-Rong, Will gfx9 get support from KMD and LLPC by the time gfx10 releases, or is it only going to be a gfx10-and-forward feature? If not, is there something missing in gfx9 hardware? Are you allowed to say? Thanks, Jakub On Wed, 15 Aug 2018 at 08:36 Jin, Jian-Rong <[email protected]<mailto:[email protected]>> wrote: Hi Jakub。 Both KMD and LLPC are not ready to support NGG for gfx9. We are going to support NGG in amdvlk for next generation GPU. Thanks Jian-Rong JIN -----Original Message----- From: amd-gfx <[email protected]<mailto:[email protected]>> On Behalf Of Jakub Okoński Sent: 2018年8月14日 21:31 To: [email protected]<mailto:[email protected]> Subject: Making a GDS Allocation for NGG Hi folks, I was trying to play around with NGG on Vega using the open source AMDVLK stack. After fetching all the code, I disabled an override in PAL, under gfx9SettingsLoader.cpp that disables the NGG setting. I've put a new option in my amdPalSettings.cfg: `NggMode,7` and that was enough to enable it. When I ran a small vulkan application, it crashed with a "Not implemented" error in Pal::Linux::Device::AllocateGds. The comment there says: // TODO: implement it once amdgpu is ready. I couldn't find anything specific to GDS allocation in upstream kernel, so I looked at agd5f/amd-staging-drm-next and found some code related to AMDGPU_GEM_DOMAIN_GDS and allocating a bo object. This is in amdgpu_gem_create_ioctl, so I think it's accessible to userspace, with a small change in libdrm, probably. Is this what is needed to make a GDS allocation that NGG would accept, or is it unrelated? Do you know if there are any other blockers for NGG besides this? Regards, Jakub _______________________________________________ amd-gfx mailing list [email protected]<mailto:[email protected]> https://lists.freedesktop.org/mailman/listinfo/amd-gfx
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