SDL: wayland: Always use a scale factor of 1 for exclusive fullscreen emulation

SDL Commits
1 
From 6a999d16faf29b49ed54efaec523cc028937fca8 Mon Sep 17 00:00:00 2001
From: Frank Praznik <[EMAIL REDACTED]>
Date: Wed, 8 Mar 2023 19:18:35 -0500
Subject: [PATCH] wayland: Always use a scale factor of 1 for exclusive
 fullscreen emulation

---
 src/video/wayland/SDL_waylandwindow.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/video/wayland/SDL_waylandwindow.c b/src/video/wayland/SDL_waylandwindow.c
index 9c402fa74332..e18db68259cd 100644
--- a/src/video/wayland/SDL_waylandwindow.c
+++ b/src/video/wayland/SDL_waylandwindow.c
@@ -266,8 +266,12 @@ static void ConfigureWindowGeometry(SDL_Window *window)
             } else {
                 UnsetDrawSurfaceViewport(window);
 
-                /* Round to the next integer in case of a fractional value. */
-                wl_surface_set_buffer_scale(data->surface, (int32_t)SDL_ceilf(data->scale_factor));
+                if (!FullscreenModeEmulation(window)) {
+                    /* Round to the next integer in case of a fractional value. */
+                    wl_surface_set_buffer_scale(data->surface, (int32_t)SDL_ceilf(data->scale_factor));
+                } else {
+                    wl_surface_set_buffer_scale(data->surface, 1);
+                }
             }
 
             /* Clamp the physical window size to the system minimum required size. */