drm_hwcomposer: skip layers with non-premult blending

Tegra driver assumes that all layers with alpha component have premult
alpha. This can cause issues if blending is different since the alpha
component is supposed to be ignored in that case.

Fixes: 62401826
Test: share location in hangouts and drag around map

Change-Id: Iff870697f7efbf5d075a5925d63a8f0f672ee725
Signed-off-by: Adrian Salido <salidoa@google.com>
2 files changed