From 48b429e7b1e35588f41f45530dfe340ca0521ace Mon Sep 17 00:00:00 2001
From: Simon Ser <contact@emersion.fr>
Date: Fri, 15 May 2020 14:55:32 +0200
Subject: [PATCH] Add n_planes == 1 assert in drm_fbid_from_dmabuf

This code assumes a single planes. Let's add a safe-guard so that we
don't forget this function when adding support for multiple planes.
---
 src/drm.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/drm.cpp b/src/drm.cpp
index 4538d94..53fa95d 100644
--- a/src/drm.cpp
+++ b/src/drm.cpp
@@ -627,6 +627,8 @@ out:
 
 uint32_t drm_fbid_from_dmabuf( struct drm_t *drm, struct wlr_dmabuf_attributes *dma_buf )
 {
+	assert( dma_buf->n_planes == 1);
+
 	uint32_t ret = 0;
 	uint32_t handles[4] = { 0 };
 	drmPrimeFDToHandle( drm->fd, dma_buf->fd[0], &handles[0] );