From a23fd5ff54e8196ec1dda1cb172caa40959c3acc Mon Sep 17 00:00:00 2001
From: Joshua Ashton <joshua@froggi.es>
Date: Wed, 27 Jul 2022 16:43:46 +0000
Subject: [PATCH] drm: Always prefer modes > 60Hz to any others

Avoids picking 4K@30Hz and other modes which feel really bad.
Happens on a lot of USB C -> HDMI adapters, even if they advertise support for it online.
---
 src/drm.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/drm.cpp b/src/drm.cpp
index 9f75f06..bac1203 100644
--- a/src/drm.cpp
+++ b/src/drm.cpp
@@ -314,6 +314,11 @@ static bool get_object_properties(struct drm_t *drm, uint32_t obj_id, uint32_t o
 
 static bool compare_modes( drmModeModeInfo mode1, drmModeModeInfo mode2 )
 {
+	bool goodRefresh1 = mode1.vrefresh >= 60;
+	bool goodRefresh2 = mode2.vrefresh >= 60;
+	if (goodRefresh1 != goodRefresh2)
+		return goodRefresh1;
+
 	if (mode1.type & DRM_MODE_TYPE_PREFERRED)
 		return true;
 	if (mode2.type & DRM_MODE_TYPE_PREFERRED)