message: Add default param for texture color space
diff: @@ -97,7 +97,7 @@ public:
  size_t w,
  tex_address_mode address_mode,
  tex_filter_mode filter_mode,
  - tex_color_space color_space,
  + tex_color_space color_space = RGB,
  bool normalized_coords = true
  )
  : width_(w)
  