If the OpenGL renderer is selected for a non-OpenGL window, recreate the window with OpenGL enabled.

Added OpenGL renderer error checking.
Use fast-path texture formats in the OpenGL renderer.

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%401969

src/video/win32/SDL_d3drender.c

@@ -396,7 +396,6 @@ D3D_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
                                        PixelFormatToD3DFMT(texture->format),
                                        pool, &data->texture, NULL);
     if (FAILED(result)) {
-        SDL_free(data);
         D3D_SetError("CreateTexture()", result);
         return -1;
     }