From 5fa26da7a7d5af41268085fae00f8c3172cab18a Mon Sep 17 00:00:00 2001
From: Frank Richter <frank.richter@dynardo.de>
Date: Wed, 7 Jun 2017 09:43:43 +0200
Subject: [PATCH] gallium/wgl: Allow context creation even if SetPixelFormat()
 wasn't called before

---
 src/gallium/state_trackers/wgl/stw_context.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/gallium/state_trackers/wgl/stw_context.c b/src/gallium/state_trackers/wgl/stw_context.c
index f3145a9..8df6abd 100644
--- a/src/gallium/state_trackers/wgl/stw_context.c
+++ b/src/gallium/state_trackers/wgl/stw_context.c
@@ -170,7 +170,12 @@ stw_create_context_attribs(HDC hdc, INT iLayerPlane, DHGLRC hShareContext,
       iPixelFormat = fb->iPixelFormat;
       stw_framebuffer_unlock(fb);
    } else {
-      return 0;
+      /* Applications should call SetPixelFormat before creating a context,
+       * but not all do, and the opengl32 runtime seems to use a default
+       * pixel format in some cases, so use that.
+       */
+      iPixelFormat = GetPixelFormat( hdc );
+      if (!iPixelFormat) return 0;
    }
 
    pfi = stw_pixelformat_get_info( iPixelFormat );
-- 
2.9.4