Removed unsupported texture warning. Feel free to change the type to

a more appropriate type if necessary.


git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/trunk@5201 178a84e3-b1eb-0310-8ba1-8eac791a3b58

src/graphics/irr_driver.cpp

@@ -909,7 +909,8 @@ IrrDriver::RTTProvider::RTTProvider(const core::dimension2du &dimension,
     m_video_driver = irr_driver->getVideoDriver();
     
     m_render_target_texture = m_video_driver->addRenderTargetTexture(dimension, 
-                                                                     name.c_str());
+                                                                     name.c_str(),
+                                                                     video::ECF_A8R8G8B8);
     m_video_driver->setRenderTarget(m_render_target_texture);
     
     m_rtt_main_node = NULL;