On Tue, 26 May 2026 15:16:58 -0300 Leandro Ribeiro <[email protected]> wrote:
> Some hardware only supports the COVERAGE blend mode and lacks PREMULTI > support entirely. DRM currently requires that PREMULTI is present when > creating a blend mode property, which prevents such drivers from being > properly upstreamed. > > This series removes this restriction and allows drivers to create a blend > mode property without PREMULTI. > > On Weston (userspace), we are working [1] towards adding support for > this kind of hardware. > > [1] https://gitlab.freedesktop.org/wayland/weston/-/merge_requests/2046 Hi, the series is: Acked-by: Pekka Paalanen <[email protected]> Thanks. > > v4: > - Trigger warnings instead of errors when pixel format with alpha is > exposed but blend mode is not setup. > - Require blend mode only when plane exposes pixel formats with alpha, not > when it supports the alpha property. > > v3: > - Changed where we enforce drivers to expose blend mode for planes that > support the alpha property or pixel formats with alpha. > - Fixed missing check to forbid calling > drm_plane_create_blend_mode_property() with a zero bitmask of > supported modes. > > v2: > - Force drivers to expose blend mode if plane supports alpha property > or pixel format with alpha. > > Leandro Ribeiro (2): > drm/drm_blend: allow blend mode property without PREMULTI > drm: ensure blend mode supported if pixel format with alpha exposed > > drivers/gpu/drm/drm_blend.c | 20 ++++++++++++++------ > drivers/gpu/drm/drm_mode_config.c | 21 +++++++++++++++++++++ > 2 files changed, 35 insertions(+), 6 deletions(-) >
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