<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
swr is for distributed computers, it is faster than swrast, but for<br>
non distributed computing environments you will want to use llvmpipe<br></blockquote><div><br></div><div>Albert, I respectfully disagree. While distributed HPC is certaily one of the most compelling use cases for swr, it's still pretty awesome for single node non-distributed systems as well so I'd definitely stick with it.<br><br>Jeff,<br>swrast is the other software renderer that will end up implemented by either softpipe or llvmpipe. Regarding your build error, it's a known incompatibility with llvm-3.9. If you build against 3.8.1 then everything should work great. For a minimal osmesa configuration with swr (that's the typical configuration I use for developing and deploying VTK and ParaView), use the following set of configuiration options:<br><br><span style="font-family:monospace,monospace">./configure \<br> --enable-opengl --disable-gles1 --disable-gles2 \ # specify which APIs to enable, in this case, Only OpenGL<br> --disable-va --disable-xvmc --disable-vdpau \ # Disable unsed state trackers<br> --enable-shared-glapi \<br> --disable-texture-float \ # legal landmine<br> --enable-gallium-llvm --enable-llvm-shared-libs \ # need llvm for vatious things<br> --with-gallium-drivers=swrast,swr \ # Turn on llvmpipe (via swrast) and swr both<br> --disable-dri --with-dri-drivers= \ # Only osmesa so no need for this<br> --disable-egl --with-egl-platforms= --disable-gbm \ # No need for EGL things<br> --disable-glx \ # again, only using osmesa<br> --disable-osmesa \ # don't use old-school osmesa<br> --enable-gallium-osmesa # do use new osmesa<br></span><br></div><div>This will result in an osmesa that has both llvmpipe and swr with llvmpipe the default. You can set the environment variable GALLIUM_DRIVER=swr at runtime to switch which one gets used.<br></div></div><br></div></div>