7 #include "image_format.h"
9 // An input is a degenerate case of an effect; it represents the picture data
10 // that comes from the user. As such, it has zero “inputs” itself. Also, it
11 // has an extra operation called finalize(), which runs when the effect chain
14 // An input is, like any other effect, required to be able to output a GLSL
15 // fragment giving a RGBA value (although that GLSL fragment will have zero
16 // inputs itself), and set the required OpenGL state on set_gl_state(),
17 // including possibly uploading the texture if so required.
18 class Input : public Effect {
20 virtual unsigned num_inputs() const { return 0; }
22 // Create the texture itself. We cannot do this in the constructor,
23 // because we don't necessarily know all the settings (sRGB texture,
24 // mipmap generation) at that point.
25 virtual void finalize() = 0;
27 virtual ColorSpace get_color_space() = 0;
28 virtual GammaCurve get_gamma_curve() = 0;
31 #endif // !defined(_INPUT_H)