Fixed broken video texture example.

Hope it's the last one. Also here performance is ok.

examples/webgl_materials_video.html

@@ -137,7 +137,7 @@
 
 					material = materials[ cube_count ];
 
-					material.program = material_base.program;
+					//material.program = material_base.program;
 
 					material.hue = i/xgrid;
 					material.saturation = j/ygrid;