3 files changed, 43 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/util/u_debug.c b/src/gallium/auxiliary/util/u_debug.c
index dc840e8566c..d79f31ea947 100644
--- a/src/gallium/auxiliary/util/u_debug.c
+++ b/src/gallium/auxiliary/util/u_debug.c
@@ -46,6 +46,12 @@
 #include <limits.h> /* CHAR_BIT */
 #include <ctype.h> /* isalnum */
 
+#ifdef _WIN32
+#include <windows.h>
+#include <stdlib.h>
+#endif
+
+
 void _debug_vprintf(const char *format, va_list ap)
 {
    static char buf[4096] = {'\0'};
@@ -64,6 +70,32 @@ void _debug_vprintf(const char *format, va_list ap)
 }
 
 
+void
+debug_disable_error_message_boxes(void)
+{
+#ifdef _WIN32
+   /* When Windows' error message boxes are disabled for this process (as is
+    * typically the case when running tests in an automated fashion) we disable
+    * CRT message boxes too.
+    */
+   UINT uMode = SetErrorMode(0);
+   SetErrorMode(uMode);
+   if (uMode & SEM_FAILCRITICALERRORS) {
+      /* Disable assertion failure message box.
+       * http://msdn.microsoft.com/en-us/library/sas1dkb2.aspx
+       */
+      _set_error_mode(_OUT_TO_STDERR);
+#ifdef _MSC_VER
+      /* Disable abort message box.
+       * http://msdn.microsoft.com/en-us/library/e631wekh.aspx
+       */
+      _set_abort_behavior(0, _WRITE_ABORT_MSG | _CALL_REPORTFAULT);
+#endif
+   }
+#endif /* _WIN32 */
+}
+
+
 #ifdef DEBUG
 void debug_print_blob( const char *name,
                        const void *blob,
diff --git a/src/gallium/auxiliary/util/u_debug.h b/src/gallium/auxiliary/util/u_debug.h
index 9c414211b3f..badd5e296f6 100644
--- a/src/gallium/auxiliary/util/u_debug.h
+++ b/src/gallium/auxiliary/util/u_debug.h
@@ -139,6 +139,15 @@ void debug_print_format(const char *msg, unsigned fmt );
 
 
 /**
+ * Disable interactive error message boxes.
+ *
+ * Should be called as soon as possible for effectiveness.
+ */
+void
+debug_disable_error_message_boxes(void);
+
+
+/**
  * Hard-coded breakpoint.
  */
 #ifdef DEBUG
diff --git a/src/gallium/state_trackers/wgl/stw_device.c b/src/gallium/state_trackers/wgl/stw_device.c
index 8f2cf9c7a1c..025dbdc8384 100644
--- a/src/gallium/state_trackers/wgl/stw_device.c
+++ b/src/gallium/state_trackers/wgl/stw_device.c
@@ -69,6 +69,8 @@ stw_init(const struct stw_winsys *stw_winsys)
    static struct stw_device stw_dev_storage;
    struct pipe_screen *screen;
 
+   debug_disable_error_message_boxes();
+
    debug_printf("%s\n", __FUNCTION__);
    
    assert(!stw_dev);