Zebediah Figura : wined3d: Respect the BO address offset when flipping the framebuffer in software.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: f059a25af11947b9bd53e3f32efda8d7873f8126
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=f059a25af11947b9bd53e3f32efda8d7873f8126

Author: Zebediah Figura <zfigura at codeweavers.com>
Date:   Mon Nov 22 18:14:41 2021 -0600

wined3d: Respect the BO address offset when flipping the framebuffer in software.

Signed-off-by: Zebediah Figura <zfigura at codeweavers.com>
Signed-off-by: Henri Verbeet <hverbeet at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/wined3d/surface.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/dlls/wined3d/surface.c b/dlls/wined3d/surface.c
index 79dc0bd06b6..9c6f5e18c28 100644
--- a/dlls/wined3d/surface.c
+++ b/dlls/wined3d/surface.c
@@ -419,8 +419,8 @@ void texture2d_read_from_framebuffer(struct wined3d_texture *texture, unsigned i
     unsigned int restore_idx;
     BYTE *row, *top, *bottom;
     BOOL src_is_upside_down;
+    BYTE *mem = NULL;
     unsigned int i;
-    BYTE *mem;
 
     wined3d_texture_get_memory(texture, sub_resource_idx, &data, dst_location);
 
@@ -504,8 +504,7 @@ void texture2d_read_from_framebuffer(struct wined3d_texture *texture, unsigned i
             mem = GL_EXTCALL(glMapBuffer(GL_PIXEL_PACK_BUFFER, GL_READ_WRITE));
             checkGLcall("glMapBuffer");
         }
-        else
-            mem = data.addr;
+        mem += (uintptr_t)data.addr;
 
         top = mem;
         bottom = mem + row_pitch * (height - 1);