From 590d7129aab49f27b5abd8c4ec2cddbe8cc82099 Mon Sep 17 00:00:00 2001
From: Simon Ser <contact@emersion.fr>
Date: Wed, 28 Jul 2021 16:40:51 +0200
Subject: [PATCH] drm: add drm_set_resolution

Allows to easily switch the output resolution.
---
 src/drm.cpp | 12 ++++++++++++
 src/drm.hpp |  1 +
 2 files changed, 13 insertions(+)

diff --git a/src/drm.cpp b/src/drm.cpp
index b499ee7..4be2c6f 100644
--- a/src/drm.cpp
+++ b/src/drm.cpp
@@ -1045,3 +1045,15 @@ bool drm_set_refresh( struct drm_t *drm, int refresh )
 
 	return drm_set_mode(drm, &mode);
 }
+
+bool drm_set_resolution( struct drm_t *drm, int width, int height )
+{
+	drmModeConnector *connector = drm->connector->connector;
+	const drmModeModeInfo *mode = get_matching_mode(connector, width, height, 0);
+	if ( !mode )
+	{
+		return false;
+	}
+
+	return drm_set_mode(drm, mode);
+}
diff --git a/src/drm.hpp b/src/drm.hpp
index 86e5f70..82ceaea 100644
--- a/src/drm.hpp
+++ b/src/drm.hpp
@@ -124,3 +124,4 @@ uint32_t drm_fbid_from_dmabuf( struct drm_t *drm, struct wlr_buffer *buf, struct
 void drm_drop_fbid( struct drm_t *drm, uint32_t fbid );
 bool drm_set_mode( struct drm_t *drm, const drmModeModeInfo *mode );
 bool drm_set_refresh( struct drm_t *drm, int refresh );
+bool drm_set_resolution( struct drm_t *drm, int width, int height );