From c53659d310c3027a71bfbe31661a3337764d9fb8 Mon Sep 17 00:00:00 2001
From: beeanyew <beeanyew@gmail.com>
Date: Tue, 11 May 2021 21:12:17 +0200
Subject: [PATCH] Fix scaling/centering for RTG modes

---
 platforms/amiga/rtg/rtg-output-raylib.c | 21 +++++++++++++++------
 1 file changed, 15 insertions(+), 6 deletions(-)

diff --git a/platforms/amiga/rtg/rtg-output-raylib.c b/platforms/amiga/rtg/rtg-output-raylib.c
index 83a2fad..672eab7 100644
--- a/platforms/amiga/rtg/rtg-output-raylib.c
+++ b/platforms/amiga/rtg/rtg-output-raylib.c
@@ -162,10 +162,6 @@ reinit_raylib:;
     dstscale.x = dstscale.y = 0;
     dstscale.width = width;
     dstscale.height = height;
-    scale_x = 1.0f;
-    scale_y = 1.0f;
-    origin.x = 0.0f;
-    origin.y = 0.0f;
 
     if (dstscale.height * 2 <= GetScreenHeight()) {
         if (width == 320) {
@@ -182,10 +178,23 @@ reinit_raylib:;
                 dstscale.width += width;
             }
         }
-        scale_x = dstscale.width / (float)width;
-        scale_y = dstscale.height / (float)height;
+    } else if (dstscale.width > GetScreenWidth() || dstscale.height > GetScreenHeight()) {
+        if (dstscale.width > GetScreenWidth()) {
+            dstscale.height = dstscale.height * ((float)GetScreenWidth() / (float)width);
+            dstscale.width = GetScreenWidth();
+        }
+        if (dstscale.height > GetScreenHeight()) {
+            dstscale.width = dstscale.width * ((float)GetScreenHeight() / (float)height);
+            dstscale.height = GetScreenHeight();
+        }
     }
 
+    scale_x = dstscale.width / (float)width;
+    scale_y = dstscale.height / (float)height;
+
+    origin.x = (dstscale.width - GetScreenWidth()) * 0.5;
+    origin.y = (dstscale.height - GetScreenHeight()) * 0.5;
+
     while (1) {
         if (rtg_on) {
             BeginDrawing();
-- 
2.39.2