[Mesa-dev] [PATCH v1 0/3] Android kms_swrast support

[Robert Foss]

Hey,


On 2018-07-09 13:01, Robert Foss wrote:
> NOTE: This series has not been tested successfully, and I'm seeing a segfault
>        during the boot process. Which I'm currently looking into.

Tracking down the segfault I've been seeing through mesa and aosp and 
bootanimation. It occurs when ioctl authentication causes 
DRM_IOCTL_MODE_MAP_DUMB to fail for render nodes.

Disabling the authentication using [1] fixes the problem.

Currently the kms_sw_displaytarget_map() function in mesa will always use 
DRM_IOCTL_MODE_MAP_DUMB.

To avoid having to use [1], dumb buffers must be avoided. Which means looking at 
VGEM. Exactly what this would look like I'm not quite sure of yet.
But I would like some input.

[1] 
https://groups.google.com/a/chromium.org/forum/#!topic/chromium-os-reviews/5nOxn-JXJUk

> 
> This series implements kms_swrast support for the Android
> platform.
> 
> It's available here:
> https://gitlab.collabora.com/robertfoss/mesa/tree/kms_swrast_v1
> and here with some debug:
> https://gitlab.collabora.com/robertfoss/mesa/tree/kms_swrast_v1_debug
> 
> 
> Changes since RFC:
>    - Dropped "st/dri: Allow kms_swrast to work without a device FD"
>    - Removed software renderer fallback from platform_android
>    - Fixed various smaller issues
> 
> 
> Rob.
> 
> Rob Herring (1):
>    android: Build kms_swrast for the Android platform
> 
> Robert Foss (2):
>    egl/android: Add Android property for forcing software rendering
>    platform/android: Enable kms_swrast fallback
> 
>   src/egl/drivers/dri2/platform_android.c      | 19 ++++++-----
>   src/egl/main/egldriver.c                     | 10 ++++++
>   src/gallium/Android.mk                       |  2 +-
>   src/gallium/auxiliary/pipe-loader/Android.mk |  1 +
>   src/gallium/drivers/softpipe/Android.mk      |  4 +--
>   src/gallium/state_trackers/dri/Android.mk    |  1 +
>   src/gallium/winsys/sw/kms-dri/Android.mk     | 33 ++++++++++++++++++++
>   7 files changed, 59 insertions(+), 11 deletions(-)
>   create mode 100644 src/gallium/winsys/sw/kms-dri/Android.mk
>