Alexandre Julliard : gdi32: Add a null WGL driver.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: e059d565ab192c76c0a150ea7b30b65d624b3713
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=e059d565ab192c76c0a150ea7b30b65d624b3713

Author: Alexandre Julliard <julliard at winehq.org>
Date:   Thu Jun 28 16:25:22 2012 +0200

gdi32: Add a null WGL driver.

---

 dlls/gdi32/driver.c       |   71 ++++++++++++++++++++++++++++++++++++++++++++-
 dlls/winex11.drv/opengl.c |    7 +++-
 2 files changed, 75 insertions(+), 3 deletions(-)

diff --git a/dlls/gdi32/driver.c b/dlls/gdi32/driver.c
index 6bea480..ae774b0 100644
--- a/dlls/gdi32/driver.c
+++ b/dlls/gdi32/driver.c
@@ -50,6 +50,7 @@ static struct list drivers = LIST_INIT( drivers );
 static struct graphics_driver *display_driver;
 
 const struct gdi_dc_funcs *font_driver = NULL;
+static const struct wgl_funcs null_wgl_driver;
 
 static CRITICAL_SECTION driver_section;
 static CRITICAL_SECTION_DEBUG critsect_debug =
@@ -386,6 +387,11 @@ static UINT nulldrv_GetOutlineTextMetrics( PHYSDEV dev, UINT size, LPOUTLINETEXT
     return 0;
 }
 
+static INT nulldrv_GetPixelFormat( HDC hdc )
+{
+    return 0;
+}
+
 static UINT nulldrv_GetSystemPaletteEntries( PHYSDEV dev, UINT start, UINT count, PALETTEENTRY *entries )
 {
     return 0;
@@ -660,11 +666,61 @@ static BOOL nulldrv_UnrealizePalette( HPALETTE palette )
     return FALSE;
 }
 
-static const struct wgl_funcs *nulldrv_wine_get_wgl_driver( PHYSDEV dev, UINT version )
+static BOOL nulldrv_wglCopyContext( HGLRC src, HGLRC dst, UINT mask )
+{
+    return FALSE;
+}
+
+static HGLRC nulldrv_wglCreateContext( HDC hdc )
+{
+    return 0;
+}
+
+static HGLRC nulldrv_wglCreateContextAttribsARB( HDC hdc, HGLRC share_ctx, const int *attribs )
+{
+    return 0;
+}
+
+static BOOL nulldrv_wglDeleteContext( HGLRC hglrc )
+{
+    return FALSE;
+}
+
+static HDC nulldrv_wglGetCurrentDC(void)
+{
+    return 0;
+}
+
+static PROC nulldrv_wglGetProcAddress( LPCSTR name )
 {
     return NULL;
 }
 
+static BOOL nulldrv_wglMakeContextCurrentARB( HDC draw_hdc, HDC read_hdc, HGLRC hglrc )
+{
+    return FALSE;
+}
+
+static BOOL nulldrv_wglMakeCurrent( HDC hdc, HGLRC hglrc )
+{
+    return FALSE;
+}
+
+static BOOL nulldrv_wglShareLists( HGLRC org, HGLRC dst )
+{
+    return FALSE;
+}
+
+static const struct wgl_funcs *nulldrv_wine_get_wgl_driver( PHYSDEV dev, UINT version )
+{
+    if (version != WINE_GDI_DRIVER_VERSION)
+    {
+        ERR( "version mismatch, opengl32 wants %u but driver has %u\n", version, WINE_GDI_DRIVER_VERSION );
+        return NULL;
+    }
+    return &null_wgl_driver;
+}
+
 const struct gdi_dc_funcs null_driver =
 {
     nulldrv_AbortDoc,                   /* pAbortDoc */
@@ -801,6 +857,19 @@ const struct gdi_dc_funcs null_driver =
     GDI_PRIORITY_NULL_DRV               /* priority */
 };
 
+static const struct wgl_funcs null_wgl_driver =
+{
+    nulldrv_GetPixelFormat,             /* p_GetPixelFormat */
+    nulldrv_wglCopyContext,             /* p_wglCopyContext */
+    nulldrv_wglCreateContext,           /* p_wglCreateContext */
+    nulldrv_wglCreateContextAttribsARB, /* p_wglCreateContextAttribsARB */
+    nulldrv_wglDeleteContext,           /* p_wglDeleteContext */
+    nulldrv_wglGetCurrentDC,            /* p_wglGetCurrentDC */
+    nulldrv_wglGetProcAddress,          /* p_wglGetProcAddress */
+    nulldrv_wglMakeContextCurrentARB,   /* p_wglMakeContextCurrentARB */
+    nulldrv_wglMakeCurrent,             /* p_wglMakeCurrent */
+    nulldrv_wglShareLists,              /* p_wglShareLists */
+};
 
 /*****************************************************************************
  *      DRIVER_GetDriverName
diff --git a/dlls/winex11.drv/opengl.c b/dlls/winex11.drv/opengl.c
index eb8b79d..952fca9 100644
--- a/dlls/winex11.drv/opengl.c
+++ b/dlls/winex11.drv/opengl.c
@@ -3444,8 +3444,11 @@ static const struct wgl_funcs * glxdrv_wine_get_wgl_driver( PHYSDEV dev, UINT ve
         ERR( "version mismatch, opengl32 wants %u but driver has %u\n", version, WINE_GDI_DRIVER_VERSION );
         return NULL;
     }
-    if (!has_opengl()) return NULL;
-    return &glxdrv_wgl_funcs;
+
+    if (has_opengl()) return &glxdrv_wgl_funcs;
+
+    dev = GET_NEXT_PHYSDEV( dev, wine_get_wgl_driver );
+    return dev->funcs->wine_get_wgl_driver( dev, version );
 }
 
 static const struct gdi_dc_funcs glxdrv_funcs =