Update mpv config:

mpv/shaders/hdr-toys/transfer-function/pq.glsl

@@ -0,0 +1,43 @@
+// https://ieeexplore.ieee.org/document/7291452
+// https://www.itu.int/rec/R-REC-BT.2100
+
+// https://www.itu.int/pub/R-REP-BT.2390
+// pq ootf: 100.0 * bt1886_eotf(bt709_oetf(59.5208 * x), 2.4, 1.0, 0.0)
+
+//!PARAM reference_white
+//!TYPE float
+//!MINIMUM 0.0
+//!MAXIMUM 1000.0
+203.0
+
+//!HOOK OUTPUT
+//!BIND HOOKED
+//!DESC transfer function (pq)
+
+const float m1 = 2610.0 / 4096.0 / 4.0;
+const float m2 = 2523.0 / 4096.0 * 128.0;
+const float c1 = 3424.0 / 4096.0;
+const float c2 = 2413.0 / 4096.0 * 32.0;
+const float c3 = 2392.0 / 4096.0 * 32.0;
+const float pw = 10000.0;
+
+float pq_eotf_inv(float x) {
+    float t = pow(x / pw, m1);
+    return pow((c1 + c2 * t) / (1.0 + c3 * t), m2);
+}
+
+vec3 pq_eotf_inv(vec3 color) {
+    return vec3(
+        pq_eotf_inv(color.r),
+        pq_eotf_inv(color.g),
+        pq_eotf_inv(color.b)
+    );
+}
+
+vec4 hook() {
+    vec4 color = HOOKED_tex(HOOKED_pos);
+
+    color.rgb = pq_eotf_inv(color.rgb * reference_white);
+
+    return color;
+}