Paul Gofman : wined3d: Create a backup context if setting the pixel format failed in wined3d_context_gl_create_wgl_ctx().

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 645eb62f709275ac46c2a7ea59bf8bcba34c7edd
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=645eb62f709275ac46c2a7ea5...

Author: Paul Gofman <gofmanp(a)gmail.com>
Date:   Mon Nov 18 18:06:12 2019 +0330

wined3d: Create a backup context if setting the pixel format failed in wined3d_context_gl_create_wgl_ctx().

Signed-off-by: Paul Gofman <gofmanp(a)gmail.com>
Signed-off-by: Henri Verbeet <hverbeet(a)codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard(a)winehq.org>

---

 dlls/wined3d/context.c | 22 ++++++++++++++++++++--
 1 file changed, 20 insertions(+), 2 deletions(-)

diff --git a/dlls/wined3d/context.c b/dlls/wined3d/context.c
index 5b8402bfe4..c5d2eeaa47 100644
--- a/dlls/wined3d/context.c
+++ b/dlls/wined3d/context.c
@@ -2033,9 +2033,27 @@ static BOOL wined3d_context_gl_create_wgl_ctx(struct wined3d_context_gl *context
 
     if (!wined3d_context_gl_set_pixel_format(context_gl))
     {
-        ERR("Failed to set pixel format %d on device context %p.\n", context_gl->pixel_format, context_gl->dc);
         context_release(context);
-        return FALSE;
+
+        if (context_gl->dc_is_private)
+        {
+            ERR("Failed to set pixel format %d on device context %p.\n", context_gl->pixel_format, context_gl->dc);
+
+            return FALSE;
+        }
+
+        WARN("Failed to set pixel format %d on device context %p, trying backup DC.\n",
+                context_gl->pixel_format, context_gl->dc);
+
+        wined3d_release_dc(context_gl->window, context_gl->dc);
+        if (!(context_gl->dc = wined3d_swapchain_gl_get_backup_dc(swapchain_gl)))
+        {
+            ERR("Failed to retrieve the backup device context.\n");
+            return E_FAIL;
+        }
+        context_gl->dc_is_private = TRUE;
+
+        return wined3d_context_gl_create_wgl_ctx(context_gl, swapchain_gl);
     }
 
     share_ctx = device->context_count ? wined3d_context_gl(device->contexts[0])->gl_ctx : NULL;