在 2026-09-10四的 17:49 +0800，Icenowy Zheng写道： > Blend mode properties are now required to expose pixel formats w/ > alpha. > > Experiments show that the fixed blending mode for the cursor seems to > be > COVERAGE: > > - With a cursor plane filled with R=G=0, B=0xff, A=0x40, the cursor > is > visible on a pure-white background, which means the background is > multiplied. > - With a cursor plane filled with R=G=B=0xff, A=0x40, the cursor > isn't > pure white and non-white patterns can be see through, which means > the > cursor is multiplied. > > Add a fixed COVERAGE blend mode property for the cursor plane. > > Signed-off-by: Icenowy Zheng <[email protected]> > Reviewed-by: Thomas Zimmermann <[email protected]>
Applied onto drm-misc-fixes. Thanks, Icenowy > --- > drivers/gpu/drm/verisilicon/vs_cursor_plane.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/gpu/drm/verisilicon/vs_cursor_plane.c > b/drivers/gpu/drm/verisilicon/vs_cursor_plane.c > index fa4f601dd0c87..da456dced88aa 100644 > --- a/drivers/gpu/drm/verisilicon/vs_cursor_plane.c > +++ b/drivers/gpu/drm/verisilicon/vs_cursor_plane.c > @@ -11,6 +11,7 @@ > > #include <drm/drm_atomic.h> > #include <drm/drm_atomic_helper.h> > +#include <drm/drm_blend.h> > #include <drm/drm_crtc.h> > #include <drm/drm_fourcc.h> > #include <drm/drm_framebuffer.h> > @@ -267,6 +268,7 @@ struct drm_plane *vs_cursor_plane_init(struct > drm_device *drm_dev, > return plane; > > drm_plane_helper_add(plane, &vs_cursor_plane_helper_funcs); > + drm_plane_create_blend_mode_property(plane, > BIT(DRM_MODE_BLEND_COVERAGE)); > > return plane; > }
