// Uploads the texture if it has changed since last time.
void set_gl_state(GLuint glsl_program_num, const std::string& prefix, unsigned *sampler_num);
+ unsigned get_width() const { return width; }
+ unsigned get_height() const { return height; }
ColorSpace get_color_space() const { return image_format.color_space; }
GammaCurve get_gamma_curve() const { return image_format.gamma_curve; }