DRM_MODE_BLEND_PREMULTI
state->pixel_blend_mode = DRM_MODE_BLEND_PREMULTI;
{ DRM_MODE_BLEND_PREMULTI, "Pre-multiplied" },
BIT(DRM_MODE_BLEND_PREMULTI) |
((supported_modes & BIT(DRM_MODE_BLEND_PREMULTI)) == 0)))
drm_object_attach_property(&plane->base, prop, DRM_MODE_BLEND_PREMULTI);