From 9f183ae76c07853da2c98423a1e0a3dec4d17331 Mon Sep 17 00:00:00 2001
From: "Pierre-Loup A. Griffais" <git@plagman.net>
Date: Tue, 1 Sep 2020 16:16:18 -0700
Subject: [PATCH] drm: add gpuvis error spew when failing a legacy flip.

---
 src/drm.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/drm.cpp b/src/drm.cpp
index 8d31369..99292b5 100644
--- a/src/drm.cpp
+++ b/src/drm.cpp
@@ -919,6 +919,7 @@ bool drm_can_avoid_composite( struct drm_t *drm, struct Composite_t *pComposite,
 
 		if ( ret != 0 )
 		{
+			gpuvis_trace_printf( "legacy flip not possible, %d\n", ret );
 			drmModeAtomicFree( drm->req );
 			drm->req = nullptr;