backend/drm: grab DMA-BUF from wlr_buffer instead of gbm_bo
Get the DMA-BUF directly out of the wlr_buffer instead of relying on the
gbm_bo. This eliminates a roundtrip through GBM.
@@ -626,14 +626,21 @@ static bool drm_connector_export_dmabuf(struct wlr_output *output,
}
struct wlr_drm_fb *fb = &crtc->primary->queued_fb;
- if (fb->bo == NULL) {
+ if (fb->wlr_buf == NULL) {
fb = &crtc->primary->current_fb;
}
- if (fb->bo == NULL) {
+ if (fb->wlr_buf == NULL) {
return false;
}
- return export_drm_bo(fb->bo, attribs);
+ // export_dmabuf gives ownership of the DMA-BUF to the caller, so we need
+ // to dup it
+ struct wlr_dmabuf_attributes buf_attribs = {0};
+ if (!wlr_buffer_get_dmabuf(fb->wlr_buf, &buf_attribs)) {
+ return false;
+ }
+
+ return wlr_dmabuf_attributes_copy(attribs, &buf_attribs);
}
struct wlr_drm_fb *plane_get_next_fb(struct wlr_drm_plane *plane) {
