mesa/src/broadcom/drm-shim/README.md

### 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.

### vc4_noop backend

This implements the minimum of vc4 in order to make shader-db work.
The submit ioctl is stubbed out to not execute anything.

Export `MESA_LOADER_DRIVER_OVERRIDE=vc4
LD_PRELOAD=$prefix/lib/libvc4_noop_drm_shim.so`.  This will be a VC4
2.1 device.
v3d: Introduce a DRM shim for calling out to the simulator. The goal is to enable testing of parts of drivers without depending on any particular kernel version or hardware being present. Simply set LD_PRELOAD=$PREFIX/lib/libv3d_drm_shim.so in your environment, and we'll fake a /dev/dri/renderD128 (or whatever the next available node is) using v3dv3. That node can then be used with the surfaceless or gbm EGL platforms. Acked-by: Iago Toral Quiroga <itoral@igalia.com> 2018-09-26 03:15:45 +01:00			`### 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.`
vc4: add drm-shim Is enought to run shader-db. Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com> Reviewed-by: Eric Anholt <eric@anholt.net> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8736> 2021-01-27 12:32:57 +00:00
			`### vc4_noop backend`

			`This implements the minimum of vc4 in order to make shader-db work.`
			`The submit ioctl is stubbed out to not execute anything.`

			Export `MESA_LOADER_DRIVER_OVERRIDE=vc4
			LD_PRELOAD=$prefix/lib/libvc4_noop_drm_shim.so`. This will be a VC4
			`2.1 device.`