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mesa/src/amd/drm-shim/README.md
Emma Anholt d4b6d03408 r300/r600: Add drm-shim support. 
I was tired of swapping gpus around just to check shader-db results of MRs
for these.  I put it in src/amd since it doesn't make sense in either of
r300 or r600.

Reviewed-by: Matt Turner <mattst88@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14809>
2022-02-02 00:59:08 +00:00

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radeon_noop backend

This implements the minimum of the radeon kernel driver in order to make shader-db work. The submit ioctl is stubbed out to not execute anything.

Export MESA_LOADER_DRIVER_OVERRIDE=r300 LD_PRELOAD=$prefix/lib/libradeon_noop_drm_shim.so. (or r600 for r600-class HW)

By default, rv515 is exposed. The chip can be selected an enviornment variable like RADEON_GPU_ID=CAYMAN or RADEON_GPU_ID=0x6740.