Actually implement multiple inputs to phases. Surprising amounts of stuff needed...

[movit] / lift_gamma_gain_effect.frag

diff --git a/lift_gamma_gain_effect.frag b/lift_gamma_gain_effect.frag
index 80e04d0659d52969bc287ffa3d96dca4010e129d..acd9d5162ca34c219bfa555feb191c1ea5a2cbd8 100644 (file)
--- a/lift_gamma_gain_effect.frag
+++ b/lift_gamma_gain_effect.frag
@@ -1,16 +1,9 @@
-// Standard lift/gamma/gain color correction tools.
-//
-// We do lift in a nonlinear (gamma-2.2) space since that looks a lot better
-// than in linear (blacks stay a lot closer to black). The two others don't
-// really care; they are (sans some constants) commutative with the x^2.2
-// operation.
-
 // These are calculated in the host code to save some arithmetic.
 uniform vec3 PREFIX(gain_pow_inv_gamma);  // gain^(1/gamma).
 uniform vec3 PREFIX(inv_gamma_22);  // 2.2 / gamma.
 
 vec4 FUNCNAME(vec2 tc) {
-       vec4 x = LAST_INPUT(tc);
+       vec4 x = INPUT(tc);
 
        x.rgb = pow(x.rgb, vec3(1.0/2.2));
        x.rgb += PREFIX(lift) * (vec3(1) - x.rgb);