# HG changeset patch
# User Sam Lantinga <slouken@libsdl.org>
# Date 1230007896 0
# Node ID 1d50666ed3d5616e15e3ec33e1431e3f4d14eeea
# Parent  45664f0e5f68cef6e14fc61f78e3b8d8234062b6
Fixed clipping source rect to match destination rect clipping

diff -r 45664f0e5f68 -r 1d50666ed3d5 src/video/SDL_video.c
--- a/src/video/SDL_video.c	Tue Dec 23 02:39:03 2008 +0000
+++ b/src/video/SDL_video.c	Tue Dec 23 04:51:36 2008 +0000
@@ -2205,6 +2205,19 @@
         if (!SDL_IntersectRect(dstrect, &real_dstrect, &real_dstrect)) {
             return 0;
         }
+        /* Clip srcrect by the same amount as dstrect was clipped */
+        if (dstrect->w != real_dstrect.w) {
+            int deltax = (real_dstrect.x - dstrect->x);
+            int deltaw = (real_dstrect.w - dstrect->w);
+            real_srcrect.x += (deltax * dstrect->w) / real_srcrect.w;
+            real_srcrect.w += (deltaw * dstrect->w) / real_srcrect.w;
+        }
+        if (dstrect->h != real_dstrect.h) {
+            int deltay = (real_dstrect.y - dstrect->y);
+            int deltah = (real_dstrect.h - dstrect->h);
+            real_srcrect.y += (deltay * dstrect->h) / real_srcrect.h;
+            real_srcrect.h += (deltah * dstrect->h) / real_srcrect.h;
+        }
     }
 
     return renderer->RenderCopy(renderer, texture, &real_srcrect,