Dieter, you need final LLVM 8.0. Marek
On Wed, Feb 13, 2019 at 11:02 AM Dieter Nützel <die...@nuetzel-hh.de> wrote: > GREAT stuff, Marek! > > But sadly some crashes. > Is my LLVM git version to old? > 7. Jan 2019 (short before 8.0 cut) > > LLVM (http://llvm.org/): > LLVM version 8.0.0svn > Optimized build. > Default target: x86_64-unknown-linux-gnu > Host CPU: nehalem > > Registered Targets: > amdgcn - AMD GCN GPUs > r600 - AMD GPUs HD2XXX-HD6XXX > x86 - 32-bit X86: Pentium-Pro and above > x86-64 - 64-bit X86: EM64T and AMD64 > > Please have a look at my post @Phoronix: > > https://www.phoronix.com/forums/forum/phoronix/latest-phoronix-articles/1079916-radeonsi-picks-up-primitive-culling-with-async-compute-for-performance-wins?p=1079984#post1079984 > > Thanks, > Dieter > > Am 13.02.2019 06:15, schrieb Marek Olšák: > > Hi, > > > > This patch series uses async compute to do primitive culling before > > the vertex shader. It significantly improves performance for > > applications > > that use a lot of geometry that is invisible because primitives don't > > intersect sample points or there are a lot of back faces, etc. > > > > It passes 99.9999% of all tests (GL CTS, dEQP, piglit) and is 100% > > stable. > > It supports all chips all the way from Sea Islands to Radeon VII. > > > > As you can see in the results marked (ENABLED) in the picture below, > > it destroys our competition (The GeForce results are from a Phoronix > > article from 2017, the latest ones I could find): > > > > Benchmark: ParaView - Many Spheres - 2560x1440 > > https://people.freedesktop.org/~mareko/prim-discard-cs-results.png > > > > > > The last patch describes the implementation and functional limitations > > if you can find the huge code comment, so I'm not gonna do that here. > > > > I decided to enable this optimization on all Pro graphics cards. > > The reason is that I haven't had time to benchmark games. > > This decision may be changed based on community feedback, etc. > > > > People using the Pro graphics cards can disable this by setting > > AMD_DEBUG=nopd, and people using consumer graphics cards can enable > > this by setting AMD_DEBUG=pd. So you always have a choice. > > > > Eventually we might also enable this on consumer graphics cards for > > those > > games that benefit. It might decrease performance if there is not > > enough > > invisible geometry. > > > > Branch: > > https://cgit.freedesktop.org/~mareko/mesa/log/?h=prim-discard-cs > > > > Please review. > > > > Thanks, > > Marek > > _______________________________________________ > > mesa-dev mailing list > > mesa-dev@lists.freedesktop.org > > https://lists.freedesktop.org/mailman/listinfo/mesa-dev >
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