Józef Kucia : wined3d: Limit amount of video memory for older Windows versions.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 565a5715468fa990cf9e7cbfe38ac59ddcde1e76
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=565a5715468fa990cf9e7cbfe3...

Author: Józef Kucia <jkucia(a)codeweavers.com>
Date:   Fri Mar 11 13:28:03 2016 +0100

wined3d: Limit amount of video memory for older Windows versions.

This should affect only 32-bit applications when the emulated Windows
version is set to "Windows 2003" or older.

Signed-off-by: Józef Kucia <jkucia(a)codeweavers.com>
Signed-off-by: Henri Verbeet <hverbeet(a)codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard(a)winehq.org>

---

 dlls/wined3d/directx.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/dlls/wined3d/directx.c b/dlls/wined3d/directx.c
index 60fb5ac..1aea568 100644
--- a/dlls/wined3d/directx.c
+++ b/dlls/wined3d/directx.c
@@ -1510,6 +1510,18 @@ static void init_driver_info(struct wined3d_driver_info *driver_info,
         driver = DRIVER_UNKNOWN;
     }
 
+    /**
+     * Diablo 2 crashes when the amount of video memory is greater than 0x7fffffff.
+     * In order to avoid this application bug we limit the amount of video memory
+     * to LONG_MAX for older Windows versions.
+     */
+    if (os_version.dwMajorVersion <= 5 && os_version.dwMinorVersion <= 2
+            && driver_info->vram_bytes > LONG_MAX)
+    {
+        TRACE("Limiting amount of video memory to %#lx bytes for OS version older than Vista.\n", LONG_MAX);
+        driver_info->vram_bytes = LONG_MAX;
+    }
+
     if (wined3d_settings.emulated_textureram)
     {
         TRACE("Overriding amount of video memory with 0x%s bytes.\n",