Fix GDK OpenGL build error
diff --git a/src/video/windows/SDL_windowsopengl.c b/src/video/windows/SDL_windowsopengl.c
index 5dd046d..c35a48a 100644
--- a/src/video/windows/SDL_windowsopengl.c
+++ b/src/video/windows/SDL_windowsopengl.c
@@ -276,7 +276,7 @@ static void WIN_GL_SetupPixelFormat(_THIS, PIXELFORMATDESCRIPTOR *pfd)
/* Choose the closest pixel format that meets or exceeds the target.
FIXME: Should we weight any particular attribute over any other?
*/
-static int WIN_GL_ChoosePixelFormat(HDC hdc, PIXELFORMATDESCRIPTOR *target)
+static int WIN_GL_ChoosePixelFormat(_THIS, HDC hdc, PIXELFORMATDESCRIPTOR *target)
{
PIXELFORMATDESCRIPTOR pfd;
int count, index, best = 0;
@@ -668,7 +668,7 @@ static int WIN_GL_SetupWindowInternal(_THIS, SDL_Window *window)
*iAccelAttr = WGL_FULL_ACCELERATION_ARB; /* if we try again. */
}
if (!pixel_format) {
- pixel_format = WIN_GL_ChoosePixelFormat(hdc, &pfd);
+ pixel_format = WIN_GL_ChoosePixelFormat(_this, hdc, &pfd);
}
if (!pixel_format) {
return SDL_SetError("No matching GL pixel format available");