From aabe12b0bc4cdf13c494dc8f725174e3a1c07786 Mon Sep 17 00:00:00 2001
From: Niklas Haas <git@haasn.xyz>
Date: Fri, 22 Sep 2017 14:19:11 +0200
Subject: vo_gpu: opengl: fix possible screenshot window crash

gl_read_fbo_contents can fail

Fixes #4905
---
 video/out/opengl/context.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'video')

diff --git a/video/out/opengl/context.c b/video/out/opengl/context.c
index 6c8821f6c7..85be3a0ace 100644
--- a/video/out/opengl/context.c
+++ b/video/out/opengl/context.c
@@ -260,7 +260,7 @@ struct mp_image *ra_gl_ctx_screenshot(struct ra_swapchain *sw)
     // OpenGL FB is also read in flipped order, so we need to flip when the
     // rendering is *not* flipped, which in our case is whenever
     // p->params.flipped is true. I hope that made sense
-    if (p->params.flipped)
+    if (screen && p->params.flipped)
         mp_image_vflip(screen);
 
     return screen;
-- 
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