Dolphin doesn't use sprites, everything is rendered in polygons. If you want the textures, try the dumping textures with the OGL plugin. There is an option that will dump them in the OGL plugin config windows under the advanced tab.
:: System Specs ::
Operating System: Windows 7 Professional x64
Video Card: ATI Radeon HD 5770
CPU: AMD Phenom I X4 9550
RAM: 6GB DDR2
EXP Index: 999999.999999
Operating System: Windows 7 Professional x64
Video Card: ATI Radeon HD 5770
CPU: AMD Phenom I X4 9550
RAM: 6GB DDR2
EXP Index: 999999.999999
