-float lift_r = 0.0f, lift_g = 0.0f, lift_b = 0.0f;
-float gamma_r = 1.0f, gamma_g = 1.0f, gamma_b = 1.0f;
-float gain_r = 1.0f, gain_g = 1.0f, gain_b = 1.0f;
-
-struct ImageFormat {
- enum { FORMAT_RGB, FORMAT_RGBA } format;
-
- // Note: sRGB and 709 use the same colorspace primaries.
- enum { COLORSPACE_sRGB, COLORSPACE_REC_601_525, COLORSPACE_REC_601_625, COLORSPACE_REC_709 } color_space;
-
- // Note: Rec. 601 and 709 use the same gamma curve.
- enum { LINEAR_LIGHT, GAMMA_sRGB, GAMMA_REC_601, GAMMA_REC_709 } gamma_curve;
-};
-
-enum EffectId {
- // Mostly for internal use.
- GAMMA_CONVERSION = 0,
- RGB_PRIMARIES_CONVERSION,
-
- // Color.
- LIFT_GAMMA_GAIN,
-};
-
-class Effect {
-public:
- virtual bool needs_linear_light() { return true; }
- virtual bool needs_srgb_primaries() { return true; }
- virtual bool needs_many_samples() { return false; }
- virtual bool needs_mipmaps() { return false; }
- bool set_float(const std::string& key, float value);
- bool set_float_array(const std::string&, const float *values, size_t num_values);
-
-private:
- bool register_float(const std::string& key, float value);
- bool register_float_array(const std::string& key, float *values, size_t num_values);
-};
-
-class EffectChain {
-public:
- void set_size(unsigned width, unsigned height);
- void add_input(const ImageFormat &format);
- Effect *add_effect(EffectId effect);
- void add_output(const ImageFormat &format);
-
- void render(unsigned char *src, unsigned char *dst);
-
-private:
- unsigned width, height;
- ImageFormat input_format, output_format;
- std::vector<Effect *> effects;
-};
-
-GLhandleARB read_shader(const char* filename, GLenum type)