From 0306a6731cf535ecd0b25d986aab5877302716a8 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <slouken@libsdl.org>
Date: Fri, 12 Oct 2012 02:56:41 -0700
Subject: [PATCH] The logical size set for a render target is temporary and
 shouldn't conflict with the logical size set for a window.

---
 src/render/SDL_render.c    | 6 ++++++
 src/render/SDL_sysrender.h | 2 ++
 2 files changed, 8 insertions(+)

diff --git a/src/render/SDL_render.c b/src/render/SDL_render.c
index 247db6ecc..01b4aa13b 100644
--- a/src/render/SDL_render.c
+++ b/src/render/SDL_render.c
@@ -926,6 +926,8 @@ SDL_SetRenderTarget(SDL_Renderer *renderer, SDL_Texture *texture)
         /* Make a backup of the viewport */
         renderer->viewport_backup = renderer->viewport;
         renderer->scale_backup = renderer->scale;
+        renderer->logical_w_backup = renderer->logical_w;
+        renderer->logical_h_backup = renderer->logical_h;
     }
     renderer->target = texture;
 
@@ -940,9 +942,13 @@ SDL_SetRenderTarget(SDL_Renderer *renderer, SDL_Texture *texture)
         renderer->viewport.h = texture->h;
         renderer->scale.x = 1.0f;
         renderer->scale.y = 1.0f;
+        renderer->logical_w = 0;
+        renderer->logical_h = 0;
     } else {
         renderer->viewport = renderer->viewport_backup;
         renderer->scale = renderer->scale_backup;
+        renderer->logical_w = renderer->logical_w_backup;
+        renderer->logical_h = renderer->logical_h_backup;
     }
     if (renderer->UpdateViewport(renderer) < 0) {
         return -1;
diff --git a/src/render/SDL_sysrender.h b/src/render/SDL_sysrender.h
index e3c99d3c9..dff297f5e 100644
--- a/src/render/SDL_sysrender.h
+++ b/src/render/SDL_sysrender.h
@@ -126,6 +126,8 @@ struct SDL_Renderer
     /* The logical resolution for rendering */
     int logical_w;
     int logical_h;
+    int logical_w_backup;
+    int logical_h_backup;
 
     /* The drawable area within the window */
     SDL_Rect viewport;