Linux Tech Tips EP#20: Building Mesa from source with custom patches to test Raytracing performance

Compiling custom Mesa with pending MR's to test Raytracing performance. The "Implement monolithic pipelines" MR seem to be a nice uplift on Raytracing performance in the games I tested.

==Time Stamps==
0:00 Intro
0:16 Test setup
0:37 Test description
0:47 Building your custom Mesa
3:35 Raytracing Benchmark Results

==Setup Notes==

Step 1. Install dependencies - use your distro's package manager

Step 2. Clone the mesa repo
mkdir -p ~/Projects
cd ~/Projects

Step 3. Add your custom patches
Download and save them into the newly created mesa folder - /home/YOURUSERNAME/Projects/mesa/

use "git apply" to apply diffs

Step 4. Create your 64-bit build
meson build64 --libdir lib64 --prefix $HOME/mesa -Dgallium-drivers=radeonsi,swrast,zink -Dvulkan-drivers=amd -Dgallium-nine=true -Dosmesa=false -Dbuildtype=release
ninja -C build64 install

Step 5. Verify build completed
cd ~/mesa && ls -la

Step 6. Using the compiled mesa binaries with a script
*If you used a different install prefix or a different lib dir above, you will need to adjust this script accordingly.

Step 6.1 Add the below to your script:
#!/bin/sh

MESA=$HOME/mesa \
LD_LIBRARY_PATH=$MESA/lib64:$MESA/lib:$LD_LIBRARY_PATH \
LIBGL_DRIVERS_PATH=$MESA/lib64/dri:$MESA/lib/dri \
exec "$@"

Step 7. Using the new Mesa driver for testing

Lutris
- Configure - System Options - Vulkan ICD loader - Unspecified
- save and exit, and then:

Heroic

or if you have a heroic alias defined

Steam

[ToallpointsWest]

Thanks for the tutorial! You wouldn't happen to know how turn that git into deb packages would you?

[etaashmathamsetty]

lol the monolithic pipeline stuff got merged before this video was uploaded