Performs a uniform texture lookup within the visual shader graph. Performs a lookup operation on the texture provided as a uniform for the shader. Sets the default color if no texture is assigned to the uniform. Defines the type of data provided by the source texture. See [enum TextureType] for options. No hints are added to the uniform declaration. Adds [code]hint_albedo[/code] as hint to the uniform declaration for proper sRGB to linear conversion. Adds [code]hint_normal[/code] as hint to the uniform declaration, which internally converts the texture for proper usage as normal map. Adds [code]hint_aniso[/code] as hint to the uniform declaration to use for a flowmap. Defaults to white color. Defaults to black color.