diff --git a/include/drmhwcgralloc.h b/include/drmhwcgralloc.h
index 65a4007..b959714 100644
--- a/include/drmhwcgralloc.h
+++ b/include/drmhwcgralloc.h
@@ -29,8 +29,11 @@
   uint32_t pixel_stride;
   uint32_t pitches[HWC_DRM_BO_MAX_PLANES];
   uint32_t offsets[HWC_DRM_BO_MAX_PLANES];
+  uint32_t prime_fds[HWC_DRM_BO_MAX_PLANES];
   uint32_t gem_handles[HWC_DRM_BO_MAX_PLANES];
+  uint64_t modifiers[HWC_DRM_BO_MAX_PLANES];
   uint32_t fb_id;
+  bool with_modifiers;
   int acquire_fence_fd;
   void *priv;
 } hwc_drm_bo_t;
diff --git a/include/platform.h b/include/platform.h
index 6fdece2..6775e29 100644
--- a/include/platform.h
+++ b/include/platform.h
@@ -52,6 +52,9 @@
 
   // Checks if importer can import the buffer.
   virtual bool CanImportBuffer(buffer_handle_t handle) = 0;
+
+  // Convert platform-dependent buffer format to drm_hwc internal format.
+  virtual int ConvertBoInfo(buffer_handle_t handle, hwc_drm_bo_t *bo) = 0;
 };
 
 class Planner {