On Mon, Apr 01, 2019 at 08:18:13PM +0000, Jim Zhang wrote: > Hi Sir/Madam: > > I am using the open source Baytrail gpu drm driver. > > Linux kernel version 3.10.61: > Libdrm package: 2.4.97 > > When calling function > properties = drmModeObjectGetProperties(drmfd, plane_id, DRM_MODE_OBJECT_PLANE); > it only returns only one property: > > This property is: > property->name = "rotation", property->prop_id =4 > It looks like that the Baytrail gpu drm driver does not support colorkey. There are two problems currently: - Destination colorkey is not implemented on BYT/CHV. I have patches for it but they have not been reviewed by anyone: https://patchwork.freedesktop.org/series/43902/ - Colorkey can only be set via a custom i915 specific ioctl (DRM_I915_SET_SPRITE_COLORKEY). There have been a few attempts at a generic property based API that never really went anywhere. It's a rather difficult problem making this generic as each hardware has its own peculiar way of specifying colorkeying. The main problem with the custom ioctl is that it's not atomic with other screen updates. So, what kind of use case do you have in mind? -- Ville Syrjälä Intel _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
