From 3ae9c80ddf4a723b0ee5262314ff95c0992f9539 Mon Sep 17 00:00:00 2001
From: Alexander Orzechowski <alex@ozal.ski>
Date: Wed, 6 Dec 2023 02:22:35 -0500
Subject: [PATCH] wlr_output: Don't allow commits changing render format
 without a buffer

---
 types/output/output.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/types/output/output.c b/types/output/output.c
index e73cc1b69..83e9653cc 100644
--- a/types/output/output.c
+++ b/types/output/output.c
@@ -621,6 +621,12 @@ static bool output_basic_test(struct wlr_output *output,
 		}
 	}
 
+	if ((state->committed & WLR_OUTPUT_STATE_RENDER_FORMAT) &&
+			(state->committed & WLR_OUTPUT_STATE_BUFFER) == 0) {
+		wlr_log(WLR_DEBUG, "Tried to change the render format without a buffer.");
+		return false;
+	}
+
 	if (state->committed & WLR_OUTPUT_STATE_RENDER_FORMAT) {
 		struct wlr_allocator *allocator = output->allocator;
 		assert(allocator != NULL);