Mod_LoadTextures
|->Mod_LoadBrushModelTexture
|  |->GL_LoadTextureImage
|     |->GL_LoadImagePixels
|     |  |->Image_Load*
|     |     |-> data from file
|     |->GL_LoadTexturePixels (watch for gamma bug)
|        |->GL_LoadTexture
|           |->GL_Upload32
|->GL_LoadTexture
   |->GL_Upload32
