On Sat, Jun 07, 2014 at 01:24:39PM -0700, Greg Fischer wrote: > LunarG, with support from Valve, announces the GlassyMesa project, an > effort to bring the LLVM compiler infrastructure to Mesa. >
This is very interesting. Have you done any testing with any of the Gallium drivers? How difficult would it be to bypass the LLVM IR -> GLSL IR -> TGSI conversion and pass LLVM IR directly to drivers like radeonsi which already use LLVM? What are you plans for getting this upstream into Mesa? -Tom > What is GlassyMesa? > > GlassyMesa utilizes LunarGLASS, the LLVM compiler stack with modifications > allowing it to represent and optimize 3D shaders and target GPUs. This > also includes use of glslang, the Khronos GLSL reference parser. It also > includes a translation pass from LLVM IR to GLSL IR, the IR used by Mesa > compiler backends. A slide deck with a block diagram is available at > lunarg.com/wp-content/uploads/2014/06/GlassyMesaSlides-05Jun2014.pdf > > Why create GlassyMesa? > > LLVM brings state-of-the-art compiler optimizations to Mesa immediately. As > importantly, it brings a modern Intermediate Representation (IR) which can > be the basis for rapid development of new optimizations as shaders and > shader languages evolve as well as enable multiple teams to develop > components independently more efficiently than current IRs. > Furthermore, this capability can be used as a basis for development > of compiler backends using the LLVM backend infrastructure. > > What is the current state of GlassyMesa? > > GlassyMesa is in very early development. It is a proof-of-concept to > demonstrate this approach can deliver shader runtime improvements and will > continue to evolve in capability. Much functionality remains to be > developed. No effort has been made yet to tune shader runtime or compile > time performance. It is running only a handful of traces to our knowledge. > Initial performance results are promising. > > Why announce GlassyMesa now? > > LunarG invites the feedback and cooperation of the Mesa community to this > effort. It believes that an effort like this requires early and frequent > input and support from the community. > > What are the plans for GlassyMesa? > > LunarG is planning to actively improve GlassyMesa functionality and > performance over the coming months. > > Where can I find GlassyMesa? > > GlassyMesa is available at: *github.com*:LunarG/steamos_mesa.git, at branch > 2014ww23.2_i965-LunarGlass_drop1 > > What is the licensing? > > LunarGLASS is released under a BSD-style license. See > http://www.lunarglass.org <http://www.lunarglass.org/faq>. > _______________________________________________ > mesa-dev mailing list > mesa-dev@lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/mesa-dev _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
