src/broadcom/drm-shim/README.md


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    Contents⊕
  
  
  v3d backend
  v3d_noop backend
  

v3d backend
This implements some of v3d using the closed source v3dv3 tree's
C/C++-based simulator. All execution is synchronous.
Export:
MESA_LOADER_DRIVER_OVERRIDE=v3d LD_PRELOAD=$prefix/lib/libv3d_drm_shim.so.
The v3dv3 version exposed will depend on the v3dv3 build -- 3.3, 4.1,
and 4.2 are supported.
v3d_noop backend
This implements the minimum of v3d in order to make shader-db work.
The submit ioctl is stubbed out to not execute anything.
Export
MESA_LOADER_DRIVER_OVERRIDE=v3d LD_PRELOAD=$prefix/lib/libv3d_noop_drm_shim.so.
This will be a V3D 4.2 device.