- fixed brightmaps again - hopefully for real this time.

The lighting model being used here is not really good for implementing render effect.

source/glbackend/gl_texture.cpp

@@ -288,7 +288,7 @@ bool GLInstance::SetTextureInternal(int picnum, FTexture* tex, int palette, int
 					else
 					{
 						UseBrightmaps(true);
-						BindTexture(5, mtex, sampler);
+						BindTexture(5, htex, sampler);
 					}
 				}
 			}