[waffle] [PATCH] gbm: add WAFFLE_GBM_RENDER_NODE for multi-GPU systems

[Marek Olšák]

From: Marek Olšák <marek.olsak at amd.com>

---
 src/waffle/gbm/wgbm_display.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/waffle/gbm/wgbm_display.c b/src/waffle/gbm/wgbm_display.c
index 5c8af29..f622f39 100644
--- a/src/waffle/gbm/wgbm_display.c
+++ b/src/waffle/gbm/wgbm_display.c
@@ -104,9 +104,13 @@ static int
 wgbm_get_default_fd(void)
 {
     int fd;
+    const char *render_node = getenv("WAFFLE_GBM_RENDER_NODE");
+
+    if (!render_node)
+        render_node = "renderD[0-9]*";
 
     // Try opening render node first
-    fd = wgbm_get_default_fd_for_pattern("renderD[0-9]*");
+    fd = wgbm_get_default_fd_for_pattern(render_node);
     if (fd >= 0)
         return fd;
 
-- 
2.7.4