curve.set_wrap(CLAMP_TO_EDGE);
texturing.attach(1, curve);
- set_peak(0.2);
- set_brightness(1.5);
+ set_exposure_adjust(0.0f);
+ set_brightness_response(0.4f);
set_linear();
}
-void ColorCurve::set_peak(float p)
+void ColorCurve::set_exposure_adjust(float e)
+{
+ shdata.uniform("exposure", pow(2.0f, e));
+}
+
+void ColorCurve::set_brightness_response(float b)
+{
+ if(b<=0 || b>1)
+ throw invalid_argument("ColorCurve::set_brightness_response");
+ float t = (b<1 ? pow(b, 1/(1-b)) : 0.0f);
+ shdata.uniform("brightness_response", b, t, pow(t, b));
+}
+
+void ColorCurve::set_peak(float)
{
- if(p<0 || p>1)
- throw invalid_argument("ColorCurve::set_peak");
- shdata.uniform("peak", p);
}
void ColorCurve::set_brightness(float b)
{
- if(b<1)
- throw invalid_argument("ColorCurve::set_brightness");
- shdata.uniform("brightness", b);
+ set_brightness_response(1/b);
}
void ColorCurve::set_gamma(float g)